Electric perforating method of seamless tube blank

Abstract

The invention relates to the electrical drilling for the seamless tube blank. It uses a robot to grip a carbon element made contact head, adjusting the location of the contact head manually or using programmable controller, with the contact aiming to the center of the tube blank, raising the robot, delivering the tube blank till the drilling position, connecting one end of the electric power with the contact head, the other end with the tubular blank, dropping down the robot, aligning the center of the tube with the robot quickly contacting the tube blank end surface smelting the metal through electric arc to get the required holes. Using electrical arc, it is simple in centering, stable and reliable with quick drilling speed, fine quality, low cost, improved pass rate, easy for the realization of automatic production.

Description

technical field [0001] The invention relates to an electric punching method for a seamless tube blank, which belongs to the field of seamless tube blank processing. Background technique [0002] In the production of seamless pipe from blank to rough tube, the piercing process requires head-to-tail centering of the blank to solve problems such as product quality and yield, that is, to punch a process hole at the center of the end of the seamless tube blank . There are several traditional solutions as follows, but all of them have insurmountable defects. [0003] The first heat centering method [0004] The tube blank heated by the heating furnace is sent to the centering station at the head and tail by the conveying roller table, and returns to the front of the punching machine for punching through the centering machine. This method solves the need for centering the tube blank, but loses the temperature of the tube blank, which brings difficulties in the process of biting ...

AI Technical Summary

Problems solved by technology

[0006] 1. Mechanical processing method, the processing cost is high, the speed is slow, and it is difficult to meet the requirements of continuous production

[0007] 2. Manual off-line punching is also slow, and the centering quality is poor, so it is difficult to meet the process requirements

[0008] At this stage, the centering machine or punching machine required by the domestic seamless pipe production process cannot meet the requirements in terms of equipment performance, working principle and method. There are problems with the quality of seamless pipes, the yield is low, and the mandrel consumption is high.

resulting in high rolling costs

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