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Quenching medium preparing method in production technique of suspension insulator ultralow temperature steel pins

A suspension insulator and production process technology, applied in the field of quenching medium preparation, can solve problems such as lack of low-temperature performance, and achieve the effect of targeted quenching process, easy cleaning, and clean working environment

Active Publication Date: 2014-02-19
DALIAN SAIRUI METAL PROD
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AI Technical Summary

Problems solved by technology

The common feature of the above standards is that the selected materials can meet the use requirements at room temperature, but do not have excellent low temperature performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The specifications for producing low temperature steel feet are usually 100KN, 120KN, 140KN, 160KN, 222KN, 300KN. The manufacturing process of the 300KN tensile grade low temperature ball head steel foot is taken as an example below.

[0015] Step 1: Select 35CrMo hot-rolled steel bars with a diameter of ￠25mm and a length of 6M. After pickling and rust removal, cold-drawing treatment is carried out to obtain a rough-processed bar with a diameter of ￠23.7mm, and then the length is cut according to the process Cut into 224mm short material, heat one end of the short material to 870-1050°C with high frequency, and then forge it on a 160T friction press to form a ball head with the size required by the process. Forging on the 110T open workbench press to form the cone head (filling head) of the size required by the process, and finally the cone head is flashed, and then the ball head and the burrs formed after the cone head fall are polished with an abrasive belt machine ...

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Abstract

The invention discloses a quenching medium preparing method in a production technique of suspension insulator ultralow temperature steel pins. The specific preparation is as follows: firstly, 25% of a PAG stock solution and 75% of running water are fully mixed; the concentration of PAG is regulated within 10-13%; then 5% of a W901 antirust agent, 0.5% of an XJ-103 defoaming agent, 1.5% of a G801 antiseptic bactericide and 3% of an RQ-322H surface active agent are added in the mixed liquid. Compared with the traditional PAG quenching liquid, the quenching medium used by the embodiment has the advantages of no oil, no smoke, no poison, more ageing resistance, clean working environment, low movement viscosity, easy workpiece cleaning and no accumulation of carbon, oil and mud on equipment; the cooling capacity different from that of the traditional quenching liquid can be obtained by assisting to regulate concentration, temperature and stirring degree; for the low-temperature products of the embodiment, more pertinence is achieved on the quenching technique.

Description

technical field [0001] The invention relates to a method for preparing a quenching agent in the production process of metal parts, in particular to a method for preparing a quenching medium in the production process for steel feet of suspension insulators. Background technique [0002] With the continuous development of the global economy, the demand for power transmission and transformation industry is increasing day by day. Due to the differences in geographical and climate conditions in various countries and regions, the requirements for power transmission and transformation products are also getting higher and higher. The steel foot is one of the key metal components of the suspension insulator. Its function is to resist various electromechanical stresses caused by changes in charge conditions under complex and changeable weather conditions, maintain an effective connection to the insulator, and ensure the basic function of the insulator, that is, support Power transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/60
Inventor 汪涛
Owner DALIAN SAIRUI METAL PROD
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