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Novel Re-contained lead-free magnesium bath alloy for troostite heat treatment

A troostite and alloy technology, applied in the field of magnesium bath alloys, can solve the problem of not fundamentally eliminating lead pollution, and achieve the effects of eliminating flux inclusions, easy process control, and good overall performance

Inactive Publication Date: 2018-07-31
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have not fundamentally eliminated the lead pollution problem encountered in the heat treatment process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A lead-free magnesium bath alloy for heat treatment at 490 degrees using a new type of Re-containing troostite. In terms of weight percentage, the chemical composition of the alloy is: Ba: 1.8wt.%, Re: 0.5wt.%, Sn: 12.0wt.%, Sc: 0.6wt.%, Ce: 0.4wt.%, Al: 2.5wt .%, and the balance is magnesium. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating to 700-800 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy The liquid is kept at 700-800 degrees for 10 minutes and then cast into the equipment at the same level as the hot top for semi-continuous casting into the required round ingot. The ingot moves down at a speed of 6m / min. The material is used for troostite heat treatment of iron and steel materials in a magnesium bath; wherein, the use temperature of the magnesium bath...

Embodiment 2

[0020] A lead-free magnesium bath alloy for heat treatment at 520 degrees using a new type of Re-containing troostite. By weight percentage. In terms of weight percentage, the chemical composition of the alloy is: Ba: 1.6wt.%, Re: 0.4wt.%, Sn: 14.0wt.%, Sc: 0.6wt.%, Ce: 0.3wt.%, Al: 3.0wt .%, and the balance is magnesium. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating to 700-800 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy The liquid is kept at 700-800 degrees for 10 minutes and then cast into the equipment at the same level as the hot top for semi-continuous casting into the required round ingot. The ingot moves down at a speed of 8m / min. The material is used for troostite heat treatment of iron and steel materials in a magnesium bath; wherein, the use temperatur...

Embodiment 3

[0023]A lead-free magnesium bath alloy for heat treatment at 540 degrees using a new type of Re-containing troostite. By weight percentage. In terms of weight percentage, the chemical composition of the alloy is: Ba: 1.8wt.%, Re: 0.5wt.%, Sn: 14.0wt.%, Sc: 0.6wt.%, Ce: 0.4wt.%, Al: 2.6wt .%, and the balance is magnesium. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating to 700-800 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy The liquid is kept at 700-800 degrees for 10 minutes and then cast into the equipment at the same level as the hot top for semi-continuous casting into the required round ingot. The ingot moves down at a speed of 8m / min. The material is used for troostite heat treatment of iron and steel materials in a magnesium bath; wherein, the use temperature...

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PUM

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Abstract

The invention discloses the novel Re-contained lead-free magnesium bath alloy for troostite heat treatment, and a processing technology thereof. The novel Re-contained lead-free magnesium bath alloy for troostite heat treatment comprises the ingredients of, by weight percentage, 1.5% to 2.0% of Ba, 0.4% to 0.6% of Re, 10.0% to 20.0% of Sn, 0.4% to 0.8% of Sc, 0.3% to 0.5% of Ce, 2.0% to 5.0% of Al, and the balance magnesium. By adopting the novel Re-contained lead-free magnesium bath alloy to carry out heat treatment instead of lead bath alloy, the obtained troostite steel wires can acquire the good comprehensive performance after being pulled, the needed mechanical indexes are provided for finished product steel cords, and less steel cords are broken in the production process.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a magnesium bath alloy. Background technique [0002] The output and structural varieties of steel cords in my country are increasing year by year. Steel cord production enterprises have also been committed to the optimization of production processes. Through equipment improvement and process adjustment, the broken wire rate of each production process is continuously reduced, and production efficiency and comprehensive yield are improved. . The change of quenching method in production practice has brought a great improvement to the stability and efficiency of steel cord production. Quenching is a key process in the production of medium and high carbon steel wire. The lead bath quenching principle of the cord steel wire is based on the isothermal transformation C curve of the steel, so that the supercooled austenite undergoes isothermal transformation in the lead liquid of about 6...

Claims

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Application Information

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IPC IPC(8): C21D1/56C22C23/00C22C1/02
CPCC21D1/56C22C1/02C22C23/00
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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