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Annealing protection method for high-speed steel wire

A technology of high-speed steel and steel wire, which is applied in the field of annealing protection of high-speed steel wire, which can solve the problems of increased hardness of steel wire and unfavorable mechanical processing, and achieve the effects of reduced production cost, excellent sealing effect, and reduced oxidation reactions

Inactive Publication Date: 2019-04-26
金峰工模具制品(石家庄)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, after the high-speed steel wire is drawn, the hardness of the steel wire will increase, which is not conducive to the subsequent mechanical processing. In order to reduce the hardness of the high-speed steel wire before mechanical processing and reduce internal stress, generally before mechanical processing, the Annealing heat treatment is carried out in the steel wire to reduce the hardness of the steel wire before subsequent operations such as re-drawing or machining

Method used

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  • Annealing protection method for high-speed steel wire

Examples

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Effect test

Embodiment 1

[0027] A method for annealing protection of high-speed steel wire, comprising the following steps:

[0028] (1) Before the steel wire is annealed, check that the ordinary well-type electric annealing furnace is operating normally, and after there is no air leakage in the annealing tank, put the drawn disc-shaped steel wire into the annealing tank; put it into an iron drum with small holes on the side 50kg of high-speed steel steel produced by turning during the production of cutting tools is put into the bottom of the annealing tank along the inner diameter hole of the wire; the tank cover is covered, and the high-speed steel steel is evenly filled in the sealing groove on the annealing tank that is in contact with the tank cover. The steel dust produced by the grinding wheel of the grinding machine in the production of knives is crushed and the annealing tank is hoisted into the annealing furnace body; among them, the steel powder is a mixed powder of fine grinding wheel parti...

Embodiment 2

[0032] A method for annealing protection of high-speed steel wire, comprising the following steps:

[0033] (1) Before the steel wire is annealed, check that the ordinary well-type electric annealing furnace is operating normally, and after there is no air leakage in the annealing tank, put the drawn disc-shaped steel wire into the annealing tank; put it into an iron drum with small holes on the side 55kg of alloy steel steel chips produced by turning during the production of cutting tools, put them into the bottom of the annealing tank along the inner diameter hole of the wire; cover the tank cover, and evenly fill the alloy steel steel in the sealing groove on the annealing tank that is in contact with the tank cover The steel dust produced by the grinding wheel of the grinding machine in the production of knives is crushed and the annealing tank is hoisted into the annealing furnace body; among them, the steel powder is a mixed powder of fine grinding wheel particles and met...

Embodiment 3

[0037] A method for annealing protection of high-speed steel wire, comprising the following steps:

[0038] (1) Before the steel wire is annealed, check that the ordinary well-type electric annealing furnace is operating normally, and after there is no air leakage in the annealing tank, put the drawn disc-shaped steel wire into the annealing tank; put it into an iron drum with small holes on the side 60kg of high-speed steel steel is produced by turning steel chips during tool production, and put them into the bottom of the annealing tank along the inner diameter hole of the wire; cover the tank cover, and evenly fill the high-speed steel steel in the sealing groove on the annealing tank that is in contact with the tank cover. The steel dust produced by the grinding wheel of the grinding machine in the production of knives is crushed and the annealing tank is hoisted into the annealing furnace body; wherein, the steel powder is a mixed powder of fine grinding wheel particles an...

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Abstract

The invention discloses an annealing protection method for a high-speed steel wire. The annealing protection method includes the following steps that firstly, the disc-shaped steel wire is put into anannealing tank, and a protection agent is charged in the annealing tank; a tank cover is put on, a sealing groove making contact with the tank cover on the annealing tank is evenly filled with sealing materials and is then lifted into an annealing furnace body; secondly, the annealing tank is heated to 650 DEG C to 750 DEG C, then a large cover is put on, the temperature is continuously increasedto 840 DEG C to 860 DEG C, and heat insulation is conducted; and thirdly, after heat insulation is conducted, the annealing tank is cooled, and the steel wire is then lifted out after cooling is over. By means of the annealing protection method, the hardness of the steel wire is reduced, meanwhile, it can also be ensured that the high-speed steel is little oxidized and is not decarburized duringannealing in a common well type electric annealing furnace, operation is simple, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, and in particular relates to an annealing protection method for high-speed steel wires. Background technique [0002] At present, after the high-speed steel wire is drawn, the hardness of the steel wire will increase, which is not conducive to the subsequent mechanical processing. In order to reduce the hardness of the high-speed steel wire before mechanical processing and reduce internal stress, generally before mechanical processing, the Annealing heat treatment is carried out in the steel wire to reduce the hardness of the steel wire before subsequent operations such as re-drawing or machining. [0003] Patent CN100535170C discloses a finished annealing method of high-speed tool steel cold-drawn steel wire, which includes the following steps: 1) The composition mass percentage of high-speed tool steel cold-drawn steel wire coil is: C 0.80~0.90, Mn≤0.40, Si≤0.40, Cr 3.80~4.40, V 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D1/74C21D9/54
CPCC21D1/26C21D1/74C21D9/54Y02P10/20
Inventor 王建华
Owner 金峰工模具制品(石家庄)有限公司