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Graphite electrode and method for steel pipe inner diameter machining with graphite electrode

A technology for graphite electrodes and steel pipes, applied in the direction of electric processing equipment, electrochemical processing equipment, processing electrodes, etc., can solve partial wall or elliptical protrusions, cannot meet the accuracy and uniformity of stainless steel pipes, and cannot be turned to process the inner diameter of steel pipes And other problems, to achieve high work efficiency, very economical effect

Active Publication Date: 2014-06-25
FUJIAN ACETRON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, some seamless stainless steel long tubes on the market are produced by extrusion technology, and the inner diameter is uniformly controlled, and often have partial wall or elliptical protrusions, which cannot meet some requirements for the accuracy and uniformity of the inner diameter of stainless steel tubes. Higher industry use (such as the production of rotating targets requires the inner diameter of the stainless steel tube to be 125mm, the tolerance of the inner diameter to be plus or minus 0.5mm, and the difference in wall thickness to be within 0.5mm, but the existing long stainless steel tube often exceeds the tolerance by about 2 to 3 times. )
[0003] Due to the long length of stainless steel pipes, traditional mechanical turning can only process about 0.5 meters in length. For long stainless steel pipes with a length of 3 meters, it is impossible to turn the inner diameter of the steel pipe.

Method used

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  • Graphite electrode and method for steel pipe inner diameter machining with graphite electrode
  • Graphite electrode and method for steel pipe inner diameter machining with graphite electrode
  • Graphite electrode and method for steel pipe inner diameter machining with graphite electrode

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Embodiment Construction

[0029] see figure 1 , a graphite electrode 1, comprising an insulating shell 11, a connecting cable 12, an insulating receiving plate 13, a graphite electrode tip 14 and at least one exhaust unit 15; the insulating shell 11 is fixedly connected to the top of the insulating receiving plate 13 ; One end of the connecting cable 12 passes through the insulating shell 11 and is electrically connected to the graphite electrode head 14; the connecting cable 12 is used for connecting the graphite electrode 1 to a DC power supply.

[0030] see again figure 1 , the longitudinal axis of the insulating receiving plate 13 is provided with a rotary hole 131, and the lower ring of the inner wall of the rotary hole 131 is provided with a plurality of first threads (not shown); that is, the rotary hole 131 is a two-stage stepped hole, The first thread is provided on the inner wall of the large hole 1311 of the stepped hole, and the top end of the connecting portion 141 described below can abu...

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PUM

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Abstract

The invention discloses a graphite electrode and a method for steel pipe inner diameter machining with the graphite electrode. The graphite electrode comprises an insulation shell, a connection cable, an insulation bearing plate and a graphite electrode head. The insulation shell is fixedly connected to the top end of the insulation bearing plate. One end of the connection cable penetrates through the insulation shell and is electrically connected with the graphite electrode head. The graphite electrode head comprises a connection portion and a working portion integrally connected to the bottom end of the connection portion. The connection portion is fixed to the insulation bearing plate. An electrolysis unit is composed of the graphite electrode, a bearing seat, a steel pipe, an electrolysis solution box and a sediment box. The electrolysis unit machines a stainless steel pipe inner diameter and can accurately correct the stainless steel pipe inner diameter, and the defects of wall deviation, protruding and the like caused by extrusion forming are overcome. Long stainless steel pipes with the length being more than 3 meters can be machined, the defects of traditional machining are overcome, working efficiency is high and the graphite electrode and the method for steel pipe inner diameter machining with the graphite electrode are friendly to the environment and free of pollution.

Description

technical field [0001] The invention relates to a graphite electrode and a method for processing the inner diameter of a steel pipe by using the graphite electrode. Background technique [0002] At present, some seamless stainless steel long tubes on the market are produced by extrusion technology, and the inner diameter is uniformly controlled, and often have partial wall or elliptical protrusions, which cannot meet some requirements for the accuracy and uniformity of the inner diameter of stainless steel tubes. Higher industry use (such as the production of rotating targets requires the inner diameter of the stainless steel tube to be 125mm, the tolerance of the inner diameter to be plus or minus 0.5mm, and the difference in wall thickness to be within 0.5mm, but the existing long stainless steel tube often exceeds the tolerance by about 2 to 3 times. ). [0003] Due to the long length of stainless steel pipes, traditional mechanical turning can only process about 0.5 met...

Claims

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Application Information

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IPC IPC(8): B23H3/04B23H3/00
Inventor 陈钦忠张科林志河
Owner FUJIAN ACETRON NEW MATERIALS CO LTD
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