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A method for self-blackening of bearing steel after quenching

A technology of bearing steel and quenching oil, applied in the direction of quenching agent, metal material coating process, heat treatment equipment, etc., can solve the problems of low efficiency, waste of resources, etc., to improve timeliness, save energy, and reduce re-coating anti-rust treatment Effect

Active Publication Date: 2017-06-09
马鞍山金泉工业介质科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the fact that the quenching and blackening treatment in the prior art are carried out separately, there are problems such as waste of resources and low efficiency, the present invention provides a method for making the bearing steel self-blackening after quenching, using refined base oil, catalyst The quenching oil prepared by cold compounding agent, blackening compounding agent, brightener and surfactant can quench bearing steel, which can make bearing steel parts (including bearing rings, rollers and cages) black automatically after quenching, Perfectly combine heat treatment and surface treatment to save resources and improve timeliness

Method used

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Examples

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Effect test

Embodiment 1

[0038] A method for self-blackening bearing steel after quenching, the steps are:

[0039] (1) Preparation of quenching oil: the composition of quenching oil and the mass parts of each component are: 18 parts of refined base oil, 0.3 part of cold-reducing compounding agent, 0.16 part of blackening compounding agent, 0.3 part of brightener, and 1.24 parts of surfactant parts, of which the kinematic viscosity of the refined base oil is 28-42mm 2 / s, pour point ≤ -9°C, acid value ≤ 0.02mgKOH / g; the refrigerated recombination agent is a mixture of polyisobutylene and EPDM, wherein the mass ratio of polyisobutylene to EPDM is 2:1; Described blackening complexing agent is the mixture of acrylate, colorant and wetting agent, wherein the mass ratio of acrylate, colorant (Black AFR, the oily colorant produced by BASF) and wetting agent (oil-soluble azone) 1:2:1; the brightener is a mixture of petroleum sulfonate and dibasic acid, wherein the mass ratio of petroleum sulfonate to dibasi...

Embodiment 2

[0053] A method for self-blackening bearing steel after quenching, the steps are:

[0054] (1) Preparation of quenching oil: the composition of quenching oil and the mass parts of each component are: 17 parts of refined base oil, 0.6 part of urging cold compounding agent, 0.1 part of blackening compounding agent, 0.5 part of brightener, and 1 part of surfactant parts, of which the kinematic viscosity of the refined base oil (produced by Sinopec) is 28-42mm 2 / s, pour point ≤ -9°C, acid value ≤ 0.02mgKOH / g; the refrigerated recombination agent is a mixture of polyisobutylene and EPDM, wherein the mass ratio of polyisobutylene to EPDM is 2:1; Described blackening complexing agent is the mixture of acrylate, colorant and wetting agent, wherein the mass ratio of acrylate, colorant (Black AFR, the oily colorant produced by BASF) and wetting agent (oil-soluble azone) 1:2:1; the brightener is a mixture of petroleum sulfonate and dibasic acid, wherein the mass ratio of petroleum sulf...

Embodiment 3

[0068] A method for self-blackening bearing steel after quenching, the steps are:

[0069] (1) Preparation of quenching oil: the composition of quenching oil and the mass parts of each component are: 19 parts of refined base oil, 0.2 part of urging cold compounding agent, 0.3 part of blackening compounding agent, 0.2 part of brightener, and 2 parts of surfactant parts, of which the kinematic viscosity of the refined base oil is 28-42mm 2 / s, pour point ≤ -9°C, acid value ≤ 0.02mgKOH / g; the refrigerated recombination agent is a mixture of polyisobutylene and EPDM, wherein the mass ratio of polyisobutylene to EPDM is 2:1; Described blackening complexing agent is the mixture of acrylate, colorant and wetting agent, wherein the mass ratio of acrylate, colorant (Black AFR, the oily colorant produced by BASF) and wetting agent (oil-soluble azone) is 1:2:1; the brightener is a mixture of petroleum sulfonate and dibasic acid, wherein the mass ratio of petroleum sulfonate to dibasic a...

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Abstract

The invention discloses a method for making bearing steel blacken after quenching and belongs to the technical field of metal heat treatment and surface treatment. Quenching oil adopted for the method is prepared from, by mass, 17-19 parts of refined basic oil, 0.2-0.6 part of a catalytic cold composite agent, 0.1-0.3 part of a blacking composite agent, 0.2-0.5 part of a brightening agent and 1-2 parts of surfacants. The quenching oil adopted for the method can make bearing steel parts (including bearing sleeve rings, rollers and holders) automatically blacken after quenching, ideal quenching hardness and a metallographic structure can be obtained, mechanical strength and tenacity needed by workpieces are achieved, the effect that the surface automatically blackens can also be achieved, the procedure that anti-rust treatment is performed on the surface again in a coating manner after heat treatment is reduced, energy is saved, procedures are simplified, and efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment and surface treatment, and more specifically relates to a method for self-blackening bearing steel after quenching. Background technique [0002] Metals are usually heat treated to improve the strength and metallographic structure of the metal to obtain the desired properties, and the quenching medium is one of the key factors to obtain high quenching quality. Commonly used quenching mediums include brine, water, minerals oil, air, etc. Blackening is a common method of chemical surface treatment. The principle is to produce an oxide film on the metal surface to isolate the air and achieve the purpose of rust prevention. In the prior art, quenching and blackening treatment are two different processes. Due to the different requirements of quenching medium and blackening liquid, it is difficult to perfectly combine the two processes of heat treatment and surface blackening treatment to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/18C21D1/58C23C22/02
Inventor 郑益赵慧史传喜李海岩
Owner 马鞍山金泉工业介质科技有限公司
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