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Water-soluble polyether hardening agent

A technology of water-soluble polyether and quenching agent, applied in the direction of quenching agent, heat treatment equipment, manufacturing tools, etc., to achieve uniform heat dissipation, reduce internal stress, and wide source of raw materials

Active Publication Date: 2013-12-18
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the existing quenching agent, the present invention provides a water-soluble polyether quenching agent, which has a special cooling effect, adjustable cooling speed, good and uniform hardenability, so as to improve the hardness of the metal after quenching heat treatment. purpose of physical properties

Method used

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  • Water-soluble polyether hardening agent

Examples

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Effect test

Embodiment 1

[0017] Water-soluble polyether quenching agent of the present invention, its chemical composition is by weight: water-soluble polyether: ethylene glycol: sebacic acid: monoethanolamine: sodium nitrate: sodium chloride=45:15:8:8: 8:16.

[0018] When in use, the water-soluble polyether quenching agent of the present invention is diluted with water to form a composition by weight percentage: water-soluble polyether 3%, ethylene glycol 1%, sebacic acid 0.53%, sodium nitrate 0.53%, sodium chloride 1.06% solution, while adding 1% antirust agent F731 and 1% preservative sodium nitrite accounting for the weight of the solution.

[0019] The cooling rate for quenching gear steel by using it is as follows: figure 1 Shown in curve 1.

Embodiment 2

[0021] Water-soluble polyether quenching agent of the present invention, its chemical composition is by weight: water-soluble polyether: ethylene glycol: sebacic acid: monoethanolamine: sodium nitrate: sodium chloride=45:15:8:8: 8:16.

[0022] When in use, the water-soluble polyether quenching agent of the present invention is diluted with water to form a composition by weight percentage: water-soluble polyether 5%, ethylene glycol 1.7%, sebacic acid 1.12%, sodium nitrate 1.12%, sodium chloride 2.25% solution, and add rust inhibitor F731 accounting for 0.5% by weight of the solution at the same time.

[0023] The cooling rate for quenching gear steel by using it is as follows: figure 1 Shown in curve 2.

Embodiment 3

[0025] Water-soluble polyether quenching agent of the present invention, its chemical composition is by weight: water-soluble polyether: ethylene glycol: sebacic acid: monoethanolamine: sodium nitrate: sodium chloride=45:15:8:8: 8:16.

[0026] When in use, the water-soluble polyether quenching agent of the present invention is diluted with water to form a composition by weight percentage: water-soluble polyether 8%, ethylene glycol 2.7%, sebacic acid 1.42%, sodium nitrate 1.42%, sodium chloride 2.84% solution, add the antiseptic sodium nitrite that accounts for 0.5% solution weight simultaneously.

[0027] The cooling rate for quenching gear steel by using it is as follows: figure 1 Shown in curve 3.

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Abstract

The invention belongs to the field of heat treatment of metals, and particularly relates to a water-soluble polyether hardening agent. According to weight ratio, the formula of the water-soluble polyether hardening agent is as follows: water-soluble polyether : glycol : sebacic acid : monoethanolamine : sodium nitrate : sodium chloride is equal to 45:15:8:8:8:16. When in use, the water-soluble polyether hardening agent needs to be diluted with water to form solution which contains 3 to 12 percent of water-soluble polyether, 1 to 4 percent of glycol, 0.53 to 2.13 percent of sebacic acid, 0.53 to 2.13 percent of sodium nitrate and 1.06 to 4.26 percent of sodium chloride, and simultaneously antirust agent accounting for 0 to 1 percent of the weight of the solution and preservative agent accounting for 0 to 1 percent of the weight of the solution are added. The water-soluble polyether hardening agent has a unique cooling effect, the cooling speed can be regulated, and the hardenability is good and uniform. Meanwhile, the water-soluble polyether hardening agent has the advantages of abundant material sources, low production cost, economy, practicability, no pollution, no toxicity, aging resistance, nonflammability, appropriate cooling speed in the martensitic range and the like.

Description

technical field [0001] The invention belongs to the field of metal heat treatment, in particular to a water-soluble polyether quenching agent. Background technique [0002] In order to improve the performance and service life of mechanical products and give full play to the potential of materials, people often carry out quenching heat treatment on mechanical parts. In order to make the properties of quenched metals and their alloys meet the required requirements, people have been studying various quenching agent. On the one hand, the quenching agent should have sufficient cooling capacity to ensure that the workpiece is hardened (get as much martensite as possible) and obtain a certain depth of hardened layer, on the other hand, it should minimize the harmful effects of thermal stress and structural stress . Before carbon steel and low-alloy steel are quenched and cooled to 650°C, the austenite is relatively stable, and it is allowed to cool at a slower rate to reduce the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/60
Inventor 祖国胤王漪琼李小兵张精华卢日环
Owner NORTHEASTERN UNIV LIAONING
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