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Composite working technology of steel wire heat treatment and straigthening and device thereof

A composite processing and electric heating device technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of difficulty in straightening steel wires with special-shaped cross-sections, difficulty in achieving consistency, and easy damage to the surface of steel wires. Improvement of physical properties and ease of handling

Inactive Publication Date: 2003-10-22
GUANGDONG IRON & STEEL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The straightening technology for steel wires with circular cross-sections is relatively mature, but it is still very difficult to straighten steel wires with special-shaped cross-sections. Not only is the tooling complicated, but it is also difficult to achieve consistent results.
In addition, it is easy to damage the surface of the steel wire
Although tension straightening is a method of straightening steel wires, this method is only suitable for straightening thin steel wires and is not suitable for thick steel wires or steel wires with non-circular cross-sections, so there are great limitations

Method used

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  • Composite working technology of steel wire heat treatment and straigthening and device thereof
  • Composite working technology of steel wire heat treatment and straigthening and device thereof
  • Composite working technology of steel wire heat treatment and straigthening and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Production of solid solution state φ5 mm SUS304 stainless steel wire straight strips: voltage is 50V, current is 500A, heating section length is 4 meters, maximum heating temperature is 1050°C, water cooling is used, tension is 20-50 kg, and wire speed is 8 m / min.

Embodiment 2

[0032] Embodiment 2: Production of hard φ6 mm GCr15 bearing steel straight strips: voltage 50V, current 800A, heating section length 4 meters, heating temperature 860°C, compressed air cooling, tension 40-70 kg, line speed 8 m / point. The cut steel wire is sent to the furnace for tempering.

Embodiment 3

[0033] Embodiment 3: Production of straight strips of SVS304 stainless steel wire with an elliptical cross-section of 4×705 mm in solid solution: voltage 40V, current 450A, length of heating section, heating temperature 1050°C, water cooling, tension of 20-50 kg, wire speed 8 m / min. After cutting, send it back to the stove for tempering.

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Abstract

The present invention provides a steel wire heat treatment and straightening composite working process and its equipment. Said process includes the following steps: making steel wire pass through an electric heating device with two electric contacts, heating steel wire to required heat-treatment temp., then making said steel wire pass through a control cooling device to coal it, finally, making the steel wire pass through a tension device to straighten said steel wire. Said invented equipment includes a tension device, and is characterized by that it also has an electric heater formed from two supporting frames, two electric contacts and a low-voltage high-current transformer, and a cooling control device which is placed in the rear end of the electric heater and equipped with spray pipe with several cooling fluid spray heads and valve.

Description

Technical field [0001] The invention relates to a metal processing technology and its equipment, in particular to a composite processing technology of steel wire heat treatment and straightening and its device. The process and device of the present invention are suitable for mechanical processing plants to adopt. Background technique [0002] In the prior art, the production of steel wire is continuous, and the rolled steel wire is generally rolled into a disc and supplied to the user unit. The user unit must straighten it before using it. Some steel wires also need to be heat-treated to improve their physical properties. performance. The straightening technology for steel wires with circular cross-sections is relatively mature, but it is still very difficult to straighten steel wires with special-shaped cross-sections. Not only is the tooling complicated, but it is also difficult to achieve consistent results. In addition, it is easy to damage the surface of the steel wir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F1/02C21D9/62
Inventor 安爱民
Owner GUANGDONG IRON & STEEL INST
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