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On-site metallographic examination polishing method applicable to tower material

A metallographic inspection and on-site technology, applied in the direction of grinding machines, abrasive belt grinders, metal processing equipment, etc., can solve the problems of long time, save time, simplify the grinding process, and improve work efficiency.

Inactive Publication Date: 2013-12-11
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the traditional grinding process is 1. Angle grinder to remove scale or coating; 2. Grinding wheel disc rough grinding; 3. Fine grinding with #100 sandpaper; 4. Fine grinding with #200 sandpaper; Grinding; 6. Fine grinding with #600 sandpaper, and between steps 2 to 6, it is necessary to "unscrew the screw, replace the sandpaper, and screw on the screw" between each two steps. It takes about 1 minute each time. The power transmission tower in service , The on-site grinding of the lightning rod tower takes a total of 19-22 minutes, which is a long time

Method used

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  • On-site metallographic examination polishing method applicable to tower material
  • On-site metallographic examination polishing method applicable to tower material

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Embodiment Construction

[0015] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0016] Analysis and comparative test of existing methods

[0017] The process flow of the grinding process is analyzed as follows: figure 1 As shown, the grinding process consists of 6 steps, of which the 1st and 2nd steps are used to polish the inspection surface to obtain a flat surface. The purpose of polishing is to make a smooth surface, so steps 1 and 2 cannot be omitted or combined; the function of steps 3 to 6 is to polish the inspection surface to a certain roughness, and use #100, #200, #400, #600 sandpaper respectively. Grinding once, the process is relatively cumbersome and the difference in particle size between sandpapers is small, and there is a possibility of merging processes. Two combinations o...

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Abstract

The invention relates to an on-site metallographic examination polishing method applicable to a tower material, and the method comprises the following steps that (1) oxide skin is removed; (2) an abrasive disc is used for roughly grinding; (3) abrasive paper is used for finely grinding: No. 400 abrasive paper and No. 600 abrasive paper are used on a polishing machine simultaneously, wherein the No. 400 abrasive paper is arranged above and the No. 600 abrasive paper is arranged below, the No. 400 abrasive paper is used for polishing and torn off and the No. 600 abrasive paper is exposed, and then the No. 600 abrasive paper is used for polishing until the testing requirements are met. According to the method, the time for on-site polishing is greatly saved, and the work efficiency of on-site metallographic examination is improved.

Description

technical field [0001] The invention belongs to the technical field of power system power generation and power equipment manufacturing and processing, in particular to an on-site metallographic inspection and grinding method suitable for tower materials. Background technique [0002] Power transmission towers and lightning rod towers in service in the power system must be ground during on-site metallographic analysis, and grinding means obtaining smooth test results through mechanical grinding. like figure 1 As shown, the traditional grinding process is 1. Angle grinder to remove scale or coating; 2. Grinding wheel disc rough grinding; 3. Fine grinding with #100 sandpaper; 4. Fine grinding with #200 sandpaper; Grinding; 6. Fine grinding with #600 sandpaper, and between steps 2 to 6, it is necessary to "unscrew the screw, replace the sandpaper, and screw on the screw" between each two steps. It takes about 1 minute each time. The power transmission tower in service , The on...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B21/18
Inventor 程明陈韶瑜马崇刘永刚孙松
Owner STATE GRID CORP OF CHINA
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