A method of manufacturing parts

 

(57) Abstract:

The invention relates to the processing of metals by pressure. A method of manufacturing parts pressure treatment of metals includes local shaping the workpiece from a multiphase alloy in a controlled thermo-mechanical conditions in the furnace on the mandrel. Shaping the workpiece is carried out on the surface or in the stream of the moving mandrel, at least one locally deforming tool. For a given metal flow may use the change of temperature gradient in the billet by heating or cooling sections of the mandrel. The technical result of the invention is to reduce the complexity and increase the accuracy of the obtained products and the utilization of metal. 4 C.p. f-crystals, 5 Il.

The invention relates to the field of pressure treatment of metals, for example maloplastichnye hard heat-resistant alloys based on Nickel, titanium, iron, in particular, to methods for producing accurate parts parts such as disks, rings, shells with well-developed external and internal surfaces, conical, hemispherical and other axisymmetric shapes and asymmetric parts like blades of a gas turbine.TM". The processing of difficult-to-deform alloys according to this method is carried out by stamping the blanks with the prepared structure under superplastic conditions (U.S. Patent N 3519503, class C 22 F 1/10, 1970).

However, the manufacture of parts in this way requires the use of energy-intensive forging equipment and a large number of die tooling, however due to the large technological allowances are low precision finished parts and the utilization of metal.

The closest to the technical nature of the claimed object is a method of manufacturing an axisymmetric parts like drives with conical, hemispherical and other axisymmetric shapes, including local formation in a controlled thermo-mechanical conditions of the rotating workpiece at a special camp, at least two pairs of rollers (RF Patent N 2119842, class B 21 K 1/32, C 22 F 1/10, publ. 1998).

However, this method is for manufacturing only axisymmetric products having sufficient thickness to transmit the rotation of the entire workpiece, while the formation is only inclined rollers, the rigidity of the axes in which the hot zone is sharply reduced. Crow under its own weight. Therefore, using the known method it is impossible to get accurate procurement axisymmetric parts of maloplastichnye hard heat-resistant alloys based on Nickel, iron or titanium, the thickness of a cloth which never allows you to transmit the rotation of the workpiece and the limited movement of the rollers is not possible to develop the surface of the workpiece, which reduces the utilization rate of the metal and the accuracy of the parts and, thereby, increases the complexity of obtaining the finished product. In addition, this method is unsuitable for the manufacture of asymmetric parts.

The objective of the invention is to reduce the complexity and increase the utilization of metal simultaneously improving the accuracy of the products obtained through the use of a stream of moving the mandrel and the possibility of changes in the temperature gradient in the billet, as well as increasing the functionality of the method by eliminating restrictions on the location of the formed workpiece.

This is achieved in that in the method of manufacturing products, including local shaping the workpiece from a multiphase alloy in a controlled thermo-mechanical conditions in the furnace on the mandrel, the plate-deforming tool thus for a given metal flow may use the change of temperature gradient in the billet by heating or cooling sections of the mandrel.

When this locally deforming tool is a tool, the projected area of the working part of which is smaller than the original area of the formed workpiece.

Appropriate during the implementation of the method are techniques, namely, that:

movement locally deforming tool set their own drive or through the workpiece from the mandrel;

- in the process of collection of metal or direction of flow of the metal workpiece and the tool set reversible cyclic movement;

- to form parts of complex profile of each of the locally deforming tools set independent of the other or simultaneous with them movement;

- when using oxidizing materials procurement or locally deforming tool, the process should be carried out in the rarefied atmosphere or vacuum, or inert gas.

The method is illustrated by the following illustrations.

In Fig. 1 is a diagram of the method for forming oseia details of the type of the disk rim and the shaft; in Fig. 4 is a diagram of the formation of the parts of the shell; Fig. 5 is a diagram of the formation of parts like blades with shelf.

The method is as follows.

The workpiece 1 is installed in the furnace 2, the mandrel 3, which define the trajectory by means of the actuator 4. If necessary it is fixed on the mandrel clamp 5. When the workpiece preset temperature and speed it serves at least one locally deforming tool, such as a roller 6, and forming the outer part with force and motion, providing set for metal. The trajectory of each roller set or from a private drive or through the workpiece from the mandrel. While forming the inner part of the workpiece is produced on the surface of the mandrel or in the Creek made it.

When forming parts with large surface for a set of metal or direction of flow of the mandrel from the workpiece and locally deforming tool (tools) ask reversible cyclic movement. Thus for a given direction of metal flow using the change of temperature gradient in the billet by heating or cooling sections of the mandrel and/or use the corresponding tool or part, efficient operation of which lies in a smaller temperature range than the temperature of the deformation of the workpiece, producing cooling or instrument or part thereof up to operating temperature.

When forming parts of a complex profile use several locally deforming tools, each of which is set independent of the other or simultaneous with them movement.

The formation of the parts can be made opposite to the main direction of flow of the metal movement locally deforming tool.

When using oxidizing materials procurement or locally deforming tool, the process is carried out in the rarefied atmosphere or in vacuum or in inert gas.

For achievement of the set of service properties of finished parts in the deformation process, you can modify the structure of the metal billet by varying temperature and high-speed modes.

Below are examples of the formation of different parts.

When forming parts of the disc type or shell of the workpiece 1 is installed in the furnace 2 to the frame 3 and fixed by the clamp 5. Mandrel set the rotation of the actuator 4. When the workpiece preset temperature the radial movement from the center of rotation, forms the workpiece.

When forming parts of the disc type with the rim and the shaft blank 1 is installed in the furnace 2, the mandrel 3, which specify the rotation of the actuator 4. When the workpiece preset temperature and speed it serves locally deforming tools - rollers. The roller 6, the penetrating end portion of the workpiece and performing a movement along the axis of rotation, forms a rim, and the roller 7 is embedded in the Central part of the workpiece and moving along the axis of rotation, forms the shaft.

When creating details type shell blank 1 is installed in the furnace 2, the mandrel 3. Mandrel set the rotation of the actuator 4. When the workpiece preset temperature and speed it serves locally deforming tool - roller 6, which, taking root and making a translational movement along the axis of rotation, forms the workpiece.

When forming the asymmetric parts like blades with a shelf of the workpiece 1 is installed in the furnace 2, the mandrel 3, which define the translational motion. When reaching the set temperature and speed to the workpiece serves locally deforming tool - roller 6, which, penetrating and making reversible cyclic movement, virusesa mandrel in comparison with the prototype will provide greater utilization of metal and precision of the products obtained by eliminating the necessity of large allowances to ensure torque transmission and prevent deformation of the workpiece under its own weight. In addition, the use of the proposed method will allow to produce both axisymmetric and asymmetric parts (the prototype method can be obtained only axisymmetric details).

The proposed method will allow you to shape the workpiece in a given program, controlling and managing the process of deformation by changing the parameters of movement of the mandrel, velocity, energy and trajectory locally deforming tools, change temperature settings and managed structural transformations in the deformed metal. The method can be implemented on commodity hardware.

1. A method of manufacturing parts pressure treatment of metals, including local shaping the workpiece from a multiphase alloy in a controlled thermo-mechanical conditions in the furnace on the mandrel, wherein the forming of the workpiece is carried out on the surface or in the stream of the moving mandrel, at least one locally deforming tool, for a given metal flow may use the change of temperature gradient in the billet by heating or cooling the mandrel.

2. The method according to p. 1, characterized in that the movement of each level is about on PP.1 and 2, characterized in that optionally set metal or direction of flow of the metal workpiece and the tools set reversible cyclic movement.

4. The method according to PP. 1-3, characterized in that for forming the components of a complex profile of each of the locally deforming tools set independent of the other or simultaneous with them movement.

5. The method according to PP.1-4, characterized in that when using oxidizing materials procurement or locally deforming tools shaping the workpiece is carried out in the rarefied atmosphere, or in vacuum or in inert gas.

 

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FIELD: instrument engineering.

SUBSTANCE: according to the method the blank of hanger is made taking direction of rolled stock into account. Then blank is subject to thermal processing, both sides of blank are cleared from material and hanger is formed by means of double-sided shaped embossing. According to the first variant of the method, blank is subject to heat-cyclical processing prior to double-sided embossing. According to the second variant, double-sided shaped embossing is made in two steps and heat-cyclical processing is performed between those two steps.

EFFECT: prolonged life of hanger; increased service life of press tool.

2 dwg, 2 ex

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