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Thermal treatment technique of steel wire

A steel wire and process technology, applied in the field of heat treatment of steel wire, can solve the problems of low heat treatment heat utilization rate and production efficiency, environmental pollution, and non-environmental protection, and achieve the effects of stable heat treatment quality, high heat utilization rate, and high production efficiency.

Active Publication Date: 2013-02-06
JIANGSU SAFETY STEEL WIRE ROPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, coal-fired muffle furnaces are mostly used for heat treatment of steel wires, and the heat utilization rate and production efficiency of heat treatment are low.
Some advanced technologies use natural gas or electric heating, and the quenching process mostly uses lead quenching process, but it will cause environmental pollution and is not environmentally friendly

Method used

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  • Thermal treatment technique of steel wire

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Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a steel wire heat treatment process is completed in the same process from wire-feeding to wire-receiving, and the process is specifically carried out in the following steps:

[0027] (1) Heating: The steel wire is unwound through the pay-off rack, and the steel wire is directly fired with natural gas. After one-stage heating at 970-980°C, two-stage heating at 950-960°C, three-stage heating at 940-950°C, and 920-930°C Heating section heating, heating time 1min;

[0028] (2) Quenching: Pass the steel wire heated by natural gas into the quenching pool, and quench it with an aqueous solution of quenching agent.

[0029] The quenching temperature is 90-100°C, the quenching time is 1min, and then rinsed with water, the flushing temperature is 70-80°C, and the flushing time is 0.5min;

[0030] (3) Pickling: Put the quenched steel wire into the sealed pickling tank, the heating method is steam heating, the pickling temperature is 80-90°C, pickling w...

Embodiment 2

[0034] A heat treatment process for steel wire, which is completed in the same process from wire unwinding to wire take-up, and the process is specifically carried out according to the following steps:

[0035] (1) Heating: The steel wire is unwound through the pay-off rack, and the steel wire is directly fired with natural gas. After one-stage heating at 970-980°C, two-stage heating at 950-960°C, three-stage heating at 940-950°C, and 920-930°C Heating section heating, heating time 1.5min;

[0036] (2) Quenching: Put the steel wire heated by natural gas into the quenching pool, and quench it through the quenching agent aqueous solution. The quenching temperature is 90-100°C, and the quenching time is 1.2min. The time is 0.7min;

[0037] (3) Pickling: Put the quenched steel wire into the sealed pickling tank, the heating method is steam heating, the pickling temperature is 80-90°C, pickling with mist hydrochloric acid, the pickling time is 1.5min;

[0038] (4) Phosphating: Pu...

Embodiment 3

[0041] A heat treatment process for steel wire, which is completed in the same process from wire unwinding to wire take-up, and the process is specifically carried out according to the following steps:

[0042] (1) Heating: The steel wire is unwound through the pay-off rack, and the steel wire is directly fired with natural gas. After one-stage heating at 970-980°C, two-stage heating at 950-960°C, three-stage heating at 940-950°C, and 920-930°C Heating section heating, heating time 2min;

[0043] (2) Quenching: Put the steel wire heated by natural gas into the quenching pool, and quench it with a quenching agent aqueous solution. The quenching temperature is 90-100°C, and the quenching time is 1.5min. The time is 1min;

[0044] (3) Pickling: Put the quenched steel wire into the sealed pickling tank, the heating method is steam heating, the pickling temperature is 80-90°C, pickling is carried out with mist hydrochloric acid, and the pickling time is 2 minutes;

[0045] (4) Ph...

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Abstract

The invention discloses a thermal treatment technique of a steel wire, comprising the following steps of: paying-off the steel wire by a pay-off rack; heating the steel wire by natural gas; putting the heated steel wire in a quenching bath for quenching; washing by water; putting the steel wire a pickling tank and then a phosphating tank; drying in a drying baker; and finally taking up. According to the invention, the whole thermal treatment line is free of pollution, clean and environment-friendly, the utilization rate of the thermal treatment heat is high, and energy is saved.

Description

technical field [0001] The invention relates to a heat treatment process for steel wire. Background technique [0002] Steel wire is one of the four types of steel plates, tubes, shapes, and wires. It is a reprocessed product made of hot-rolled discs and cold-drawn. The main process of steel wire production includes raw material selection, iron scale removal, heat treatment, wire drawing, surface treatment, drying, etc. [0003] At present, coal-fired muffle furnaces are mostly used for heat treatment of steel wires, and the heat utilization rate and production efficiency of heat treatment are low. Some advanced technologies use natural gas or electric heating, and the quenching process mostly uses lead quenching process, but it will cause environmental pollution and is not environmentally friendly. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a heat treatment process for steel wire which is clean and enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/52C21D9/56C23G3/02C23C22/07
Inventor 杨岳民林德均王大海
Owner JIANGSU SAFETY STEEL WIRE ROPE
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