Welding device for crack of water tank of wheel dephosphorization electric reciprocating pump body and repairing process

Abstract

The invention discloses a welding device for a crack of a water tank of a wheel dephosphorization electric reciprocating pump body. The welding device comprises a base, a back face connecting and fixing steel plate detachably arranged on the rear side of the upper surface of the base, two groove face fixing pull plates detachably arranged on the front side of the upper surface of the base at intervals, and an upper pressing plate detachably and fixedly connected with the back face connecting and fixing steel plate and the two groove face fixing pull plates. A repairing process of the welding device for the crack of the water tank of the wheel dephosphorization electric reciprocating pump body is further provided. The repairing process of the welding device for the crack of the water tank of the wheel dephosphorization electric reciprocating pump body is provided for solving the problems existing in the background technology. By applying the device and the process, welding repairing of the crack of the water tank of the electric reciprocating cast iron pump body can be rapidly implemented and completed, the purchase and maintenance cost is reduced, the long-time shutdown loss is reduced, and a guarantee is provided for reasonable grouping steel to produce various domestic and overseas wheels.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to a crack welding device and a repairing process for a water tank of a wheel dephosphorization electric reciprocating pump body. Background technique [0002] The wheel production line of Masteel Rail Transit Material Technology Co., Ltd. generally uses a 32MPa horizontal plunger electric reciprocating pump for dephosphorization of the rolled and heated wheel blanks in the wheel production line. The dephosphorization effect directly affects the rolling quality of the wheel products. Its work The principle is that the motor is connected to the input shaft of the reducer through a coupling, and the crankshaft is driven by the output shaft of the reducer to rotate. The crankshaft rotates and drives the connecting rod, crosshead and plunger to reciprocate. The plunger is sealed with packing. Down to achieve the purpose of suction and discharge of high-pressure water. The function of th...

AI Technical Summary

Problems solved by technology

After some horizontal plunger electric reciprocating pumps have been used for a long time, irregular through-cracks of different lengths (such as 1M long) will appear in the water tank of the pump body, causing the cooling water for lubricating oil to flow away along the cracks, which cannot To cool the lubricating oil, because the lubricating oil cannot be cooled in time, the heat generated between the friction pairs of the moving parts cannot be taken away by the lubricating oil at all during the operation of the pump. At the same time, the high oil temperature causes the lubricating oil to deteriorate, which affects the lubrication effect. Increased wear between kinematic pairs

If it continues to run without replacement or repair, the movement of the entire horizontal plunger electric reciprocating pump will be quickly damaged, and even the mating surfaces of the pump body will not be able to continue to be used due to thermal deformation.

However, if a new pump is replaced, not only the procurement cycle will be long, but also the procurement cost of the 32MPa horizontal plunger electric reciprocating pump will be high, which will inevitably affect production

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