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Quench bath composition and application thereof

A technology of composition and quenching liquid, applied in the direction of quenching agent, heat treatment equipment, manufacturing tools, etc., can solve the problems of limiting the use range of quenching liquid, deformation and cracking of workpieces made of high hardenability materials, and large cooling rate, so as to reduce quenching deformation and the effect of the risk of cracking

Inactive Publication Date: 2016-01-27
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the high cooling rate of the existing quenching liquid is likely to cause deformation and cracking of workpieces made of high hardenability materials, which limits the scope of use of the quenching liquid and cannot replace high-cost quenching oil. A new quenching fluid composition

Method used

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  • Quench bath composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0022] Add correctly measured water into the blending kettle, sequentially add the required amount of polyether, polyvinylpyrrolidone, antirust agent, defoamer, triethanolamine, and stir at room temperature for 2 to 10 hours to obtain a colorless transparent liquid. Before use, the obtained quenching liquid composition was diluted with water (10% by weight) for quenching.

[0023] The components and contents of the quenching liquid composition are shown in Table 1, and the corresponding performance index results are shown in Table 2. in FIG. 1,

[0024] Polyether: Hersbit Chemical Co., Ltd.;

[0025] Polyvinylpyrrolidone: Aladdin's reagent;

[0026] Borate ester: Shanghai Hongze Chemical Co., Ltd.;

[0027] Carboxylic acid amine: Shanghai Hongze Chemical Co., Ltd.;

[0028] Carboxylic acid alcohol ammonium salt: Shanghai Hongze Chemical Co., Ltd.;

[0029] Polyether silicone: Shanghai Yucheng Chemical Co., Ltd.;

[0030] Silicone: Shanghai Yucheng Chemical Co., Ltd.;

...

Embodiment 5

[0039] The quenching liquid composition of [Example 1-4] is used to replace a certain quenching oil quenching process in the market at 20-40°C. In the process of use in a heat treatment plant, there is no deformation or cracking of the workpiece after quenching. The surface quality of the workpiece is good, and the hardness, hardened layer depth, metallographic structure and other indicators meet the requirements. Safety and environmental requirements.

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Abstract

The invention relates to a quench bath composition and application thereof. The problems that due to the fact that the cooling speed of an existing quenching bath is too high, workpieces made of materials high in quenching degree are prone to deforming and cracking, the application range of the quenching bath is limited, and quenching oil with the high cost cannot be replaced are mainly solved. The quench bath composition is composed of, by weight, 45-70 parts of polyalkylene glycol, 2-30 parts of polyvinylpyrrolidone, 0.5-8 parts of antirust agent, 0.005-0.2 part of antifoaming agent, 0.1-5 parts of triethanolamine and 20-80 parts of water. According to the technical scheme, the problems are solved well, and the quench bath composition can be used for quenching of materials high in quenching degree or small and medium low-carbon steel.

Description

technical field [0001] The invention relates to a quenching liquid composition and its application. Background technique [0002] Quenching is heating the steel to Ac 3 or Ac 1 It is a heat treatment process in which a certain temperature above the temperature is maintained for a certain period of time, and then cooled at an appropriate rate to obtain martensite and (or) bainite structure. The purpose of quenching is to improve the hardness, strength and wear resistance to meet the performance of parts. Quenching media include air, water, quenching oil and water-based quenching fluid. Among them, quenching oil is currently used in the largest amount and is widely used in industries such as automobiles, molds, bearings, fasteners, wind power, and household appliances. The speed is slow, and some problems such as poor hardenability or large workpieces are prone to insufficient hardness and oily smoke on site. [0003] The water-soluble polymer quenching fluid has replaced...

Claims

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Application Information

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IPC IPC(8): C21D1/60
Inventor 李谨李秀峰邓象贤杨羽为张明
Owner CHINA PETROLEUM & CHEM CORP
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