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Sn-Mn-containing bismuth bath alloy for heat treatment and with excellent heat transfer performance

A technology of heat transfer performance and alloy, applied in the field of alloy, can solve the problem of not fundamentally eliminating lead pollution, etc., and achieve the effect of excellent flow characteristics, low cost and small investment

Inactive Publication Date: 2018-10-12
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

[0019] A bismuth bath alloy containing Sn and Mn for heat treatment with excellent heat transfer performance at 490 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ba: 1.5wt.%, Sn: 4.2wt.%, Mn: 0.8wt.%, Sc: 0.3wt.%, Sm: 0.2wt.%, Ni: 1.40wt .%, the balance is bismuth. 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 bismuth bath; wherein, the use temperature of the bismuth bath all...

Embodiment 2

[0022] A bismuth bath alloy containing Sn and Mn for heat treatment with excellent heat transfer performance at 520 degrees. By weight percentage. In terms of weight percentage, the chemical composition of the alloy is: Ba: 1.2wt.%, Sn: 4.8wt.%, Mn: 0.6wt.%, Sc: 0.4wt.%, Sm: 0.2wt.%, Ni: 1.4wt .%, the balance is bismuth. 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 bismuth bath; wherein, the use temperature o...

Embodiment 3

[0025] A bismuth bath alloy containing Sn and Mn for heat treatment with excellent heat transfer performance at 540 degrees. By weight percentage. In terms of weight percentage, the chemical composition of the alloy is: Ba: 1.6wt.%, Sn: 4.5wt.%, Mn: 0.8wt.%, Sc: 0.4wt.%, Sm: 0.3wt.%, Ni: 1. 0wt.%, the balance is bismuth. 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 heat 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 bismuth bath; wherein, the use temperature of t...

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PUM

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Abstract

The invention discloses a Sn-Mn-containing bismuth bath alloy for heat treatment and with excellent heat transfer performance and a processing technology of the Sn-Mn-containing bismuth bath alloy. The Sn-Mn-containing bismuth bath alloy comprises, by weight percentage, 1.0-1.8 wt.% of Ba, 4.0-6.0 wt.% of Sn, 0.5-1.0 wt.% of Mn, 0.2-0.5 wt.% of Sc, 0.2-0.3 wt.% of Sm, 1.0-2.0 wt.% of Ni and the balance bismuth. The bismuth bath alloy is used to replace a lead bath alloy for heat treatment, so that the contact between a steel wire and air is limited, and decarburization is prevented; and compared with a common heating method, the hardness of the steel wire surface is improved, the possibility of crack formation and spreading is reduced, and the fatigue performance of the steel wire is improved.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a bismuth bath alloy. Background technique [0002] The hot-rolled wire rod will produce large deformation during the drawing process, which will cause work hardening, resulting in uneven internal stress of the wire rod, and fracture in the subsequent deep processing process. The uniformity of the high-strength wire rod is the key factor affecting the subsequent processing of the wire rod. The higher the strength of the wire, the higher the requirement for its uniformity. Rope-making steel wire is made of hot-rolled wire rod through multi-pass drawing. In the process of steel wire drawing, in order to eliminate its work hardening, it is necessary to toughen the steel wire to transform it into a fine pearlite (sorbite) structure that is conducive to deep drawing, that is, the sorbite treatment of the steel wire. [0003] The traditional sorbite treatment of rope-making steel wire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C12/00C22C1/02C21D1/56C21D9/52
CPCC22C12/00C21D1/56C21D9/525C22C1/02
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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