The method of welding submerged non-consumable electrode

 

(57) Abstract:

The invention relates to mechanical engineering and can be used in the welding industry. When welding the annular and circular seams in the product at the beginning of the seam do deepening. Install the electrode at the desired depth and begin the process of welding with constant welding speed and current. Such a welding method allows to reduce the cost of the equipment to perform welding by refusing expensive and use commercially available equipment. 1 Il.

The invention relates to mechanical engineering and can be used in the welding industry.

There is a method of arc welding with non-consumable electrode, which can improve the quality of the formation of a seam using technological plate (a.c. USSR N 1673335, MKI B 23 K 9/16, 1991).

The disadvantage of analogue is that this method does not allow welding submerged electrode without using a special control system.

The closest in technical essence and the achieved result is a method of submerged arc welding with non-consumable electrode (welding Equipment shipped TIG power is the manual welding submerged electrode is possible thanks to the creation of specialized equipment, which provides a smooth immersion of the electrode and changing the welding speed.

The disadvantage of the prototype is that the implementation of the welding method is possible only with the use of special expensive equipment, providing smooth immersion of the electrode, corresponding to the change of welding current and welding speed.

The task to be solved by the invention, is to reduce the cost of equipment for implementing the method of welding by refusing expensive and use commercially available equipment.

This object is achieved in that in the method of welding the annular and circular seams are shipped with non-consumable electrode, unlike the prototype, the product at the beginning of the seam, make an indentation which set the electrode at the desired depth and begin the process with constant welding speed and current.

The invention is illustrated in the drawing, which depicts a diagram of a method, where 1 is welded material, 2 - immersed nonconsumable electrode.

A specific example of implementation of the method.

Weld samples of steel 12X18H10T thickness = 12 mm

SUB>St.= 10 m/h, the delay time t=5 S.

The electrode diameter de.= 10 mm, angle sharpening electrode1= 15othe radius of the electrode r = 1,5 mm

At the beginning of the seam do deepening cone angle2= 30othe size of the recesses H=4.5 to 5.0 mm, which sets the electrode so that the distance between the end electrode and the bottom surface of the recess was 1.5 to 2.0 mm On the power source sets the current of constant magnitude and time delay, include an oscillator and begin the process with constant welding speed and current.

The proposed method can reduce the cost of equipment for implementing the method of welding by refusing expensive and use commercially available equipment.

The method of welding the annular and circular seams are shipped with non-consumable electrode, characterized in that the product at the beginning of the seam, make an indentation which set the electrode at the desired depth, and begin the process with constant welding speed and current.

 

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1 tbl, 1 ex

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2 tbl

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3 cl, 3 dwg, 1 tbl

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