Abrasive article (versions) and method of its forming. RU patent 2511015.

FIELD: process engineering.

SUBSTANCE: invention relates to processing by abrasives and may be used for production of composite material machining tools. Abrasive article comprises base and abrasive part including three different bonded phases including abrasive particles, metal matrix and impregnating material. Besides there is the substrate area between abrasive part and base including weld joint.

EFFECT: longer life of abrasive articles.

15 cl, 4 dwg, 3 tbl, 1 ex

THE TECHNICAL FIELD

The invention as a whole is directed on abrasive tools and processes of their formation and, more specifically, abrasive tools, using impregnated abrasive segments attached to the ground, and on the methods mentioned instruments.

BACKGROUND OF THE INVENTION

The tools necessary for further improvement of infrastructure, such as the construction of additional roads and buildings, is essential to the continued economic recovery in developing regions. In addition, developing areas are continuous need to replace aging infrastructure and developed new roads and buildings.

Construction industry uses a variety of tools for cutting and sanding of building materials. Tools for cutting and sanding is required to remove or re-finishing of old-sections. In addition, career extraction and preparation of materials for finishing, such as stone slabs used for floors and facades of buildings, requires tools for drilling, cutting and grinding. Typically, these tools include abrasive details related to basic element, such as a plate or a circle. Breaking the link between the abrasive part and/or basic element may require the replacement of abrasive parts and/or basic element that as a result leads to downtime and loss of productivity. In addition, a gap may be a security risk when part abrasive parts with high speed are ejected from the working area. Therefore it is required to improve the linkage between the abrasive detail and basic element.

DISCLOSURE OF THE INVENTION

According to one of the options for the implementation of inventions, abrasive product includes the base and abrasive detail, including abrasive particles associated with metal matrix, where abrasive part contains a network of interconnected pore, largely filled with insulating material, including steel sealing the material. Abrasive product also includes the area of the substrate between the abrasive detail and the base, where the area of the substrate made of a binding composition, including at least one metallic element, where the area of the substrate is an area that is different from the base, and the area that is different from abrasive details. Abrasive product has an average tensile strength in the area of the substrate at least approximately 600 N/mm 2 , and the deviation to the tensile strength of not more than approximately 150.

Another feature of the invention is that as the basis abrasive item includes three different phases associated with each other, including abrasive particles, metallic matrix and a sealing material, and the area of the substrate between the abrasive detail and base. The area of the substrate includes the first phase and the second phase where the first phase and the second phase largely evenly distributed in each other, and where the first phase and the second phase consists of a discrete areas where discrete areas have an average size of not more than approximately 50 microns.

According to another feature, abrasive product includes the base and abrasive detail, including abrasive particles associated with a metallic matrix and abrasive item also includes a network of interconnected pore, largely filled with insulating material, including steel a sealing material. Abrasive item also includes the area of the substrate between the abrasive detail and the base, where the area of the substrate is formed of a binding composition, including at least one metallic element, where the area of the substrate is an area that is different from the base, and the area that is different from abrasive details. Abrasive product has an average speed of at least approximately 1000 cm2 /min if 50 of the cutting paving slabs made from concrete with a thickness of 4 cm and a length of 30 see

Another peculiarity abrasive products is that it includes the base, abrasive detail, including three different stages connected to each other and containing abrasive particles, metallic matrix and a sealing material, and the area of the substrate between the abrasive detail and the base, where the area of the substrate includes laser welded seam.

Method of formation of abrasive products includes accommodation abrasive items on the basis of where abrasive item includes abrasive particles associated with metal matrix, and also includes a network of interconnected pore, largely filled impregnating material including metal sealing material. The method also includes welding abrasive parts to the base.

In yet another variant of the abrasive product includes the base, abrasive detail, including abrasive particles associated with a metallic matrix abrasive item also includes a network of interconnected pore, largely filled with insulating material, including metal sealing material, the area of the substrate between the abrasive detail and the base, where the area of the substrate comprises a network of interconnected pore, largely filled with insulating material, including steel sealing material and weld in the area of the substrate, connecting the base and abrasive detail.

SHORT DESCRIPTION OF GRAPHIC MATERIALS

This disclosure can be better understood, and his many characteristic features and benefits can be made obvious to specialists in this area by reference in the accompanying graphic materials.

FIGURE 1 includes the precedence diagram of the method of formation of abrasive products in accordance with one of the embodiments of the invention.

FIGURE 2 includes an illustration of abrasive products in accordance with one of the embodiments of the invention.

FIGA and 3B include the image in the cross-section part of abrasive products, including the area of the substrate, in accordance with one of the embodiments of the invention.

FIGURE 4 includes an image in the cross-section of the traditional obtained by hot pressing of abrasive products containing area of the substrate that manifests stones.

Using the same reference positions on various illustrations indicates similar or identical positions.

DETAILED DESCRIPTION OF THE INVENTION

According to one of the embodiments of the invention, abrasive products in this disclosure may include basic element and abrasive detail. Abrasive product can be a cutting tools, designed for cutting building materials, such as saw for cutting of concrete. Alternatively, abrasive product can be a tool for grinding, such as grinding of concrete or refractory clay, or for removal of the asphalt.

FIGURE 1 includes a scheme of sequence of operations involving the method of formation of abrasive products according to one of the embodiments of the invention. As shown, the process can begin at the stage 101 by placing abrasive items on the ground. It should be understood that the abrasive item may be initially formed before placing based on order of insertion. In particular, abrasive item can be an impregnated abrasive segment containing abrasive particles associated with metal matrix and to enable a network of interconnected pore, where at least part of the pores filled with insulating material made of metal sealing material.

Basic element may have the form of a ring, ring segment, plate or disk, depending on the intended use of abrasive products. Basic element can be made of metal or metal alloy. For example, the base can be made of steel, heat-treated steel alloys, such as 25CrMo4, 75Crl, C60 or similar steel alloys to base elements with thin cross-section, or from simple structural steel, such as St 60 or similar - for thick basic elements. Basic element may have a tensile strength at least approximately 600 N/mm 2 . Basic element can be formed many metallurgical methods, known from the existing state of the art.

In particular, base material may constitute a material of low-carbon type, which will contribute to the process of the welding in accordance with the variants of the invention described in this disclosure. In order to facilitate the process of formation, the base material can have a carbon content of less than about 10%, as, for example, less than 8%, less than approximately 6%, less than approximately 4%less than about 2% or less than approximately 1%.

Illustrative embodiment of the invention abrasive product includes abrasive particles embedded in a metal matrix containing a network of interconnected pore. Abrasive particles may include abrasive materials with Mohs hardness of at least approximately 7. In special cases abrasive particles may include superabrasives material such as diamond and cubic boron nitride. Abrasive particles can have a particle size of not less than approximately 400 mesh (US), as, for example, no less than approximately 100 mesh (US), as, for example, from approximately 25 to 80 mesh (US). Depending on the application, the size can range from approximately 30 to 60 mesh (US).

Metal matrix may include metal or metal alloy, which includes a number of metal items. For some abrasive segments of the metal matrix can include elements such as iron, tungsten, cobalt, Nickel, chromium, titanium, silver, and their combination. In special cases the metal matrix can include rare-earth elements, such as cerium, lanthanum, neodymium, and their combination.

In one of the particular cases of a metal matrix may include wear-resistant components. For example, in one of the embodiments of the invention of metal matrix may include tungsten carbide, and, more specifically, it may largely consist of tungsten carbide.

In some designs of metal matrix may include particles of individual components or pre-sintered particles. Particles can have a size of approximately 1.0 microns to about 250 microns.

As noted above, abrasive item can be formed so that the inside of the interconnected network of pores in the body abrasive products was attended by a sealing material. A sealing material can partially fill, largely to fill or even completely filled pore volume through the volume of abrasive products. According to one of the private structures, impregnating material can be a metal or alloy metal material. For example, some suitable metal elements may include copper, tin, zinc and their combination.

In special cases a sealing material can be bronirovannyj material made of metal alloy, and, in particular, of copper-tin alloy metal so that it is especially suited for welding in accordance with the variants of the invention in this disclosure. For example, bronirovannyj material may consist mostly from copper and tin. Some bronirovannye materials may include certain amounts of tin, as, for example, no more than approximately 20%, not more than approximately 15%, not more than approximately 12% or even no more than about 10% (based on total number of materials in the composition. In accordance with one of the embodiments of the invention bronirovannyj material may include the number of tin in the interval from approximately 5% to approximately 20%, as, for example, from about 8% to approximately 15%, or even from about 8% to around 12%.

In addition, some bronirovannye materials can be used as a sealing material and can contain a number of copper, of at least approximately 80%, at least approximately 85% or even at least approximately 88% (based on total number of materials in the composition. Some bronirovannye materials may use the amount of copper in the range from approximately 80% to 95%, as, for example, approximately 85% to 95% or even from approximately 88% to approximately 93%.

In addition, bronirovannyj material may contain particularly low content of other elements such as zinc, to contribute to the proper formation of abrasive products according to the ways of formation in the variants of the invention described in this disclosure. For example, bronirovannyj material may use not more than about 10%, as, for example, no more than approximately 5% or even no more than about 2%, zinc. In fact, some bronirovannye materials can significantly not contain zinc.

Abrasive item can be made so that the abrasive particles could be combined with metal matrix with the formation of the mixture. Metal matrix can include a mixture of particles of the components of the metal matrix or may be a pre-sintered particles of the metal matrix. In one of the embodiments of the invention of metal matrix can match the formula (WC) w w x Fe y Cr z X (1-w-x-y-z) , where 0≤w≤of 0.8, 0≤x≤of 0.7, 0≤<y≤of 0.8, 0≤z≤0,05 w+x+y+z≤1, and X can include other metals such as cobalt and Nickel. In another embodiment, the invention of the metal matrix can match the formula (WC) w w x Fe y Cr z Ag v X (1-w-x-y-z) , where 0≤w be < 0.5, 0≤x≤0,4, 0≤at≤1,0, 0≤z≤of 0.05, 0≤v≤0,1, v+w+x+y+z≤1, and X can include other metals such as cobalt and Nickel.

For the formation of porous abrasive details mixture of metal matrix and abrasive particles can be molded in abrasive preparation by the operation of pressing, in particular the operation of cold pressing. Cold pressing may be under pressure from approximately 50 KN/cm 2 (500 MPa) to approximately 250 KN/cm 2 (2500 MPa). The resulting porous abrasive item may contain a network of interconnected pore. In one of the examples porous abrasive item may have porosity from approximately 25% vol. up to approximately 50%.

The resulting porous abrasive item can then be subjected to the process of soaking, where a sealing material is located inside the body abrasive parts and, in particular, is located inside an interconnected network of pores inside the body abrasive details. A sealing material can be drawn into the pores subjected to cold pressed abrasive items under the action of capillary. After soaking the resulting snow abrasive item can have a density not less than approximately 96%. The number of impregnating material that pervades abrasive detail, can range from approximately 20% wt. up to approximately 45% wt. in the calculation of reinforced abrasive detail.

Abrasive detail may include the area of the substrate that is located between the abrasive detail and the Foundation, which promotes the connection abrasive details and background. According to one of the embodiments of the invention, the area of the substrate can be a scope other than abrasive parts and from the base. Furthermore, the area of the substrate may initially formed as part of abrasive parts and, in particular, can be a scope other than abrasive part that has special qualities that contribute to join abrasive details and background. For example, according to one of the embodiments of the invention area substrates may have a lower percentage (% vol.) abrasive particles in comparison with the number of abrasive particles inside abrasive details. In fact, in certain cases, the scope of the substrate can greatly not contain abrasive particles. This may be particularly suitable ways of formation that uses a beam of energy (for example, a laser beam) for welding of abrasive parts to the base.

At least part of the area of the substrate may include connecting composition. Connecting the composition may include metal or metal alloy. Some of suitable metallic materials may include transition metal elements, including, for example, titanium, silver, manganese, phosphorus, aluminium, magnesium, chromium, iron, lead, copper, tin and their combination.

In special cases linking the composition may be similar with insulating material so that connects composition and a sealing material differ from each other not more than by individual kinds of items. In more specific cases linking the composition may be similar to a sealing material. For example, linking the composition may be bronirovannyj material and, in particular, can consist largely of brendirovannogo material described in this disclosure.

According to the variants of the invention described in this disclosure linking the composition can be correlated with impregnating composition, possessing a certain degree of commonality in the types of items. Quantitatively the difference elemental weight percent between a binding composition and impregnating composition may be no more than approximately 20 wt.%. The difference elemental weight% is defined as the absolute value of the difference in the weight content of each item contained in binding compositions in relation to impregnating compositions. Other options for carrying out the invention have a closer relationship to the structures between a binding composition and the composition of a sealing material. The difference elemental weight percent between a binding composition and impregnating composition may, for example, no more than 15 wt.%, 10 wt.%, 5 wt.% or it may not exceed 2 weight%. The difference elemental weight of approximately percent of zero is the same composition, comprising the area of the substrate and a sealing material. The above-mentioned cell values can be measured using any suitable analytical tools, including microprobe element analysis, and do not take into account fusion which may occur along the areas in which a sealing material comes into contact with a metal matrix.

The area of the substrate may have some content porosity. For example, the area of the substrate may have lower porosity than abrasive detail. In fact, the magnitude of porosity in the area of the substrate can be significantly reduced compared with the magnitude of porosity in abrasive details. In some cases, the area of the substrate includes at least 2% lower porosity than on the basis of volume of interest between the two areas. In other cases, the difference may be longer, such as porosity at least approximately 4% less, at least approximately 5% less, at least approximately 7% less, at least about 10% less, or at least about 15% lower porosity than porosity abrasive details. The difference in porosity can contribute to the proper soaking the area of the substrate and abrasive components.

The area of the substrate can be porosity not more than approximately 40% vol. porosity in the calculation of the total area of the substrate. In other cases, the magnitude of porosity in the area of the substrate may be no more than about 38%vol not more than approximately 34%, or even no more than approximately 30%. Also the magnitude of porosity in the area of the substrate can be at least approximately 7%vol at least approximately 8%, at least approximately 10%, at least approximately 12%vol or even at least approximately 15% vol. a sealing material. The content of porosity in the area of the substrate can be in the interval between any minimum and maximum interest contents mentioned above.

You should also be aware that a significant portion of total porosity in the area of the substrate can be an interrelated porosity. I.e. at least most, or even at least approximately 75%, at least approximately 80%, at least approximately 90%, at least 95%, or substantially all the porosity can be an interrelated porosity.

The area of the substrate may include at least approximately 5% vol. impregnating material in relation to total area of the substrate. In other cases, the substrate may include at least approximately 7%vol at least approximately 8%, at least approximately 10%, at least approximately 12%vol or even at least approximately 15% vol. a sealing material. The number of impregnating material can be limited so that it amounted to no more than approximately 40%vol no more than about 38%vol not more than approximately 34% vol. or even no more than approximately 30%. The number of impregnating material can be in the range between any minimum and maximum interest contents mentioned above.

Accordingly, the area of the substrate may include a network of interconnected pores formed between metal matrix where a sealing material largely fills interconnected pores. The area of the substrate may contain similar amounts of metal matrix and insulating material. In particular, the area of the substrate can greatly not contain abrasive particles. In those variants of the invention, where the area of the substrate includes interconnected pores, largely filled with insulating material insulating material may play a role brendirovannogo material in the formation of a seam (for example, welded seam) between the base and abrasive detail.

Accordingly, the formation of the area of the substrate and, in particular, the management of the entity and the size of porosity within the area of the substrate can be managed in order to facilitate the proper soaking. Proper soaking provides adequate material properties in the area of the substrate and the formation of a suitable area of the weld between the substrate and substrate. For example, the area of the substrate is formed with an average size of pores within the substrate is not large and, in particular, smaller than the average size of pores for pores inside abrasive details. This difference can promote full and proper soaking the area of the substrate and the formation of the area of a welded seam.

In some cases, the average size of pores, then, inside the area of the substrate on at least approximately 1% less than the average pore size of pores inside abrasive details. In other variants the invention, the difference in the average pore size may be larger, as, for example, on at least approximately 3%, at least approximately 5%, at least about 10%, or even at least approximately 20% less. The difference may be limited, as, for example, no more than about 80%, not more than approximately 70%, no more than about 50% or even more than approximately 40%. The difference in the average size of pores can be in the range between any minimum and maximum values.

The management of the entity and the size of porosity within abrasive parts and the area of the substrate may include the use of precision uniform application of pressure in the formation of abrasive products, including abrasive detail and scope of the substrate. Even pressure across the length and volume of both components can contribute to the uniform compression of solids and, largely, uniform pore sizes. For additional control pore size may, in particular, to get the sizes of powder particles of a powder material used to generate abrasive parts and the area of the substrate.

In one of the embodiments of the invention area of the substrate may include special bronirovannyj material that promotes the welding operation with the aim of integrating abrasive details and background. In fact, certain areas of the substrate can be largely consist of copper-tin brendirovannogo material. Some suitable bronirovannye materials can include at least approximately 80% of copper, as, for example, at least approximately 82% of copper, at least approximately 85% of copper, at least approximately 87% of copper, at least approximately 88% of copper, at least approximately 90% of copper, at least approximately 93% of copper, or even at least 95% of copper. Thus, bronirovannyj material may include a balanced amount of tin, as, for example, suitable bronirovannye materials can include no more than approximately 20% tin, not more than approximately 18% tin, not more than approximately 15%, not more than approximately 13% tin, not more than approximately 12% tin, not more than than approximately 10% tin, not more than approximately 8% tin, not more than approximately 5% tin.

After placing abrasive items based on the stage 101 process continues at the stage 103 by welding abrasive parts to the base. In special cases the welding process includes collision beam energy base and, in particular, can include collision beam energy from the scope of the substrate between the abrasive detail and base. In special cases, the beam energy can be a laser beam, and thus, abrasive segment is attached to the base by means of laser welding seam. The laser can be a laser generator Roffin supplied by the company Dr.Fritsch.

FIGURE 2 illustrates an example of abrasive products 200, including reinforced abrasive item 202-related basis 204. Densified abrasive item 202 includes particles 206 metal matrix and abrasive particles 208 related to each other and interconnected network then passing between particles 206 metal matrix filled with a sealing material 210. As also shown, abrasive product may include the area of the substrate 212, located between the abrasive item 202 and base 204. The area of the substrate 212 may include connecting composition, which may be closely with the composition of the condensed abrasive details 202.

In accordance with one of the embodiments of the invention, the area of the substrate abrasive products is formed so that the area of the substrate 212 could include the first phase and the second phase, evenly distributed in one another. FIGA and 3B include pictures of cross sections part of abrasive products, including the area of the substrate, in accordance with one of the embodiments of the invention. As shown, the image FIGA includes part of the Foundation 301, part of the area of the substrate 302 and part of abrasive segment 303. As additionally shown FIGU, the area of the substrate 302 may include discrete phase, in particular, the first phase 305 and the second phase 306, which largely evenly mixed.

In addition, as shown in the zoomed image, the first phase 305 and the second phase 306 can contain discrete area. Discrete areas may be a polycrystalline areas that can have the average size of not more than approximately 50 microns in measuring along the longest direction similarly zoomed image. This could be facilitated through the use of metal material with a certain average size of particles of a powder, which are largely spherical shape. In some embodiments of the invention discrete area of the first and second phases 305 and 306 may be less than, for example, order no more than approximately 40 micron, no more than approximately 30 micron, no more than about 25 microns or even no more than approximately 20 microns. In special cases, discrete area of the first and second phases 305 and 306 can have the average size in the range from about 1 micrometer to about 50 microns, as, for example, from about 5 microns to about 50 microns, as, for example, from approximately 10 microns to about 40 microns, or even from approximately 10 microns to about 30 microns.

As shown, the first and the second phase 305 and 306 can be carefully mixed in one another and finely mramorion. Moreover, different areas, identifying the first phase 305, can be defined by elongated, fibrous and/or dendritic morphology, where fibrous threads can pass through to the second phase 306 and can even interweave with each other.

Furthermore, the area of the substrate 302 may include thin closed pores 307, which can be evenly spaced one relative to another in the whole volume of the area of the substrate 302. In special cases closed pores 307 may have a special way rounded and, in General, the average pore size less than approximately 50 microns, as, for example, less than approximately 40 microns, less than approximately 25 microns or less than approximately 15 microns.

Furthermore, the area of the substrate 302 can greatly not contain stones that can be usual for the more traditional abrasive products (for example, subjected to hot pressing abrasive segments related to the Foundation by welding). The stones are usually identified as areas with heterogeneous compared with surrounding areas composition and can represent areas that are more inclined to cause destruction, or cracking, in this area. FIGURE 4 includes an image of the cross-section of the traditional abrasive products containing area of the substrate 401 manifesting stones 403, which are present in the form of large and rounded particles, which are surrounded by different second phase 404. Furthermore, the area of the substrate 401 shows pores 405, which are unevenly distributed through the volume of the area of the substrate, but are concentrated in particular areas, such as in the areas closest to the stones 403 and, more specifically, on the boundary between the stones 403 and different second phase 404, environmental stones 403.

Abrasive product, formed in accordance with the variants of the invention described in this disclosure may have a special mechanical properties and, in particular, appropriate bond strength and integrity in the strength of ties between the abrasive segment and the ground, measured in the field of the substrate. For example, according to one of the embodiments of the invention, abrasive product may have an average tensile strength in the area of the substrate at least 600 N/mm 2 , which can be measured in accordance with European standard test procedures described in document EN13236. In some cases average tensile strength can be at least approximately 600 N/mm 2 , as, for example, at least approximately 700 N/mm2 , at least approximately 800 N/mm 2 , at least approximately 925 N/mm 2 or even at least approximately 975 N/mm 2 . In a more private variants the invention, the abrasive product may have an average tensile strength range from approximately 600 N/mm 2 up to approximately 1400 N/mm 2 , from approximately 700 N/mm 2 up to approximately 1400 N/mm 2 and even from approximately 800 N/mm 2 to approximately 1400 N/mm 2 . In some embodiments of the invention abrasive product may have an average tensile strength range from approximately 900 N/mm 2 up to approximately 1400 N/mm 2 , as, for example, from approximately 925 N/mm 2 up to approximately 1350 N/mm 2 , approximately 950 N/mm 2 up to approximately 1300 N/mm 2 or even from approximately 975 N/mm 2 up to approximately 1250 N/mm 2 .

In addition, abrasive products according to the options for carrying out the invention described in this disclosure may be holistic tensile strength, measured through deviation tensile strength, which is calculated as the standard deviation for at least 100 measurements. Abrasive products according to the options for carrying out the invention described in this disclosure may have a deviation tensile strength of not more than approximately 150, as, for example, no more than approximately 125, no more than approximately 120 or even no more than approximately 110. In some cases the deviation of the tensile strength can be in the interval from about 25 to about 150, as, for example, from about 25 to about 125 or even from about 25 to about 110.

Abrasive products according to the options for carrying out the invention described in this disclosure may possess certain characteristics of performance. For example, abrasive products can have an average cutting speed, at least approximately 1000 cm2 /min if 50 of the cutting paving slabs made of concrete aggregate used in paved roads and having a thickness of 4 cm and a length of 30 see In fact, some of abrasive products can have an average speed of at least approximately 1050 cm2 /min, as, for example, at least approximately 1100 cm 2 /min or even, at least approximately 1125 cm2 /min, Private embodiments of the invention described in this disclosure can use abrasive products with cutting speed in the interval from approximately 1000 cm2 /min to about 1400 cm 2 /min, as, for example, from about 1050 cm2 /min to about 1400 cm 2 /min or even from about 1100 cm 2 /min to approximately 1300 cm2 /min

Examples

Was formed and tested four of the sample. Sample 1 - soaked detail, initially formed by cold pressing with approximately 1000 MPa, and then filled with bronze material. Abrasive product includes metal matrix on the basis of tungsten carbide (may include other metals from a number of cobalt and Nickel) and abrasive particles of diamond. Abrasive product in accordance with the Sample 1 also includes the area of the substrate that largely does not contain abrasive particles. A sealing material is a bronze material 80/20 copper/tin with average size of particles less than approximately 45 microns.

Sample 2 formed in accordance with the process for Sample 1, except that the bronze material is a bronze material 85/15 copper/tin with average size of particles less than approximately 63 microns.

Sample 3 formed in accordance with the process for Sample 1, except that the bronze material is a bronze material 90/10 copper/tin with average size of particles less than approximately 45 microns.

4 sample is formed in accordance with the process for Sample 1, except that the bronze material is a bronze material 95/5 copper/tin with average size of particles less than approximately 74 microns.

Samples 1-4 were tested on the speed and durability, the results of which are summarised below in Table 1.

Sample 1

Sample 2

Sample 3

Sample 4

Speed (cm2 /min)

Durability (m2 /mm)

As noted above, the cutting speed and durability of abrasive products, formed in accordance with the Samples 1 through 4 demonstrate the standard industrial performance. The rate for Samples 1-4 higher than for certain traditional industry standard fragments. Durability also improved compared with certain traditional products.

In addition, in accordance with the above samples (Samples 1-4) was formed several parts. In fact, for each of the samples (i.e. Samples for 1-4) was formed on 16 segments that were welded with low carbon steel by means of laser welding. The strength of a welded seam for each of the samples, the average tensile strength and standard deviation below in Table 2 on the basis of measured torque needed to buy a segment from the Foundation.

Sample 1

Sample 2

Sample 3

Sample 4

Secondary (N·m)

Standard deviation

As you can see, the segments for Samples 1-4 show the average tensile strength, suitable for industrial applications. Perhaps more noteworthy is that the standard deviation for all samples tested were relatively low, especially in comparison with the traditional details of where the standard deviation, as a rule, much higher.

Samples 5 and 6 were formed in accordance with the above Example 2. Each of Samples 5 and 6 includes 16 independent subjected to cold pressed and soaking segments that with the help of laser welding welded with the basis of low carbon steel. Average tensile strength and deflection tensile strength were measured for each of the 16 segments each of the Samples 5 and 6. The results are summarised below.

5 sample

Sample 6

Secondary (N/mm 2 )

Deviation tensile strength

Average tensile strength, registered for Samples 5 and 6, conforms to industry standards. Specifically, the deviation of the tensile strength is better than the other, traditional samples that were tested and, as a rule, had a value of more than 120, if not 150. It is clear that the combination of laser welding and soaked abrasive products contributes strongly linked product, which has a more holistic boundary of the section at the junction that leads to fewer sudden failures and breaks abrasive segments related to the Foundation.

According to one of the embodiments of the invention, abrasive tool includes a supporting member and abrasive components. Abrasive tools can be a cutting tools, designed for cutting building materials, such as a saw for cutting of concrete. Alternatively, abrasive tools can be a tool for grinding, as, for example, for grinding of concrete or refractory clay, or for removal of the asphalt. In particular, the following variants of the invention formulate a welding method impregnated abrasive segments with the basis for use in abrasive product. Some references to the current level of technology generally recognize welding as a suitable process for the connection. Some references even made General statements about what impregnated fragment can be connected to the base by various processes and welding randomly listed as one of several processes. However, these references not even remotely aimed at welding impregnated snippets and such process or article in the link is not activated. The authors of this application, as experts in this field, note that welding impregnated fragments is not a trivial process. Moreover, on the basis of their knowledge, no single product in the industry is not based on successfully welded impregnated detail. If successful, abrasive products, demonstrated by the Applicants, will grow industrial demand in the specified product. In addition, in order to form a commercially successful product in accordance with the variants of the invention described in this disclosure is necessary to identify and overcome some difficulties. Some combination of the characteristic features that lead to success, includes the size and the form of the raw materials used for the formation of the area of the substrate, the composition of the area of the substrate, type, wavelength and energy of the electron beam used for welding, type and location of abrasive grains inside abrasive segment. In addition, abrasive segments according to the options for carrying out the invention described in this disclosure, demonstrate an unexpected mechanical properties and performance characteristics.

In the foregoing description a reference to a specific variants of the invention and the connection of certain components is illustrative. It should be understood that the reference to the components, which are related or connected designed for disclosure as a direct connection between these components and indirect connections through one or more intermediate components in accordance with regard to the implementation described in this disclosure methods. Thus, disclosed above, the object of the invention shall be construed as illustrative and non-limiting, and the accompanying the claims offered as covering all modifications, enhancements, or other variants of the invention, which fall under the true scope of the present invention. Thus, the scope of the present invention to the maximum permitted by law degree is determined by the widest valid following interpretation of the claims, with due account equivalents, and it should not be limited previous detailed description.

1. Abrasive products containing base, abrasive detail, including abrasive particles associated with metal matrix and abrasive item includes a network of interconnected pore, mostly filled with a sealing material, including steel sealing material, the area of the substrate between the abrasive detail and the base, and the area of the substrate comprises a network of interconnected pore, largely filled with insulating material, including steel sealing material and weld in the area of the substrate that connects the base and abrasive detail.

2. Abrasive product of claim 1, wherein the area of the substrate has an average pore size of which does not exceed the average pore size of abrasive details.

3. Abrasive product according to claim 2, in which the difference in the average pore size of the area of the substrate at least approximately 1% less than the average pore size of abrasive details.

4. Abrasive product of claim 1, wherein the base includes low carbon material, which has a carbon content of less than 20%.

5. Abrasive product of claim 1, wherein the metal sealing material abrasive items is a metal sealing material, as well as in the area of the substrate.

6. Abrasive product by item 5, in which metal sealing material includes bronze material.

7. Abrasive product of claim 6, in which the bronze material is metal alloy containing copper and tin.

8. Abrasive product of claim 1, wherein abrasive detail with porosities from approximately 25% vol. up to 50% calculated on the total amount of abrasive details.

9. Abrasive product of claim 1, wherein the area of the substrate is lower porosity than porosity abrasive details.