Quenching oil for bearings and preparation method thereof

A quenching oil and bearing technology, applied in the field of quenching and cooling medium, can solve the problems of unstable oil performance, unsatisfactory, blackening, etc., and achieve the effect of improving the quality of industrial products, solving the uneven color and reducing the cost

Active Publication Date: 2011-08-03
CHANGZHOU LONGPONT LUBRICANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the domestic machinery oil and conventional quenching oil are used. The cooling performance of foreign quenching oil products is strong, the quenching cooling range is too wide, and there is no special quenching medium for bearings. However, the requirements for bearing quenching are many and strict, and there are quenching colors. , quenching deformation, microstructure, hardness and other requirements
At present, the quenching oil at home and abroad basically cannot meet or can only meet the quenching requirements of some bearings.
For domestic products, after quenching and cooling, the bearings have defects such as mottled, bluish, black, microstructure, uneven hardness, large deformation, etc., and the performance of the oil is very unstable after a period of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] A method for preparing quenching oil for bearings. Add 79-98.45 parts of base oil into a reaction kettle to raise the temperature at 50-70°C, then add 1-8 parts of refrigerant, 0.05-5 parts of brightener, and 0.5-8 parts of antioxidant Keep the temperature at 50-70°C, stir for 1-2 hours, and then filter to get the product.

[0017] The physicochemical index of the present invention is as follows:

[0018] Kinematic viscosity (40°C) mm2 / s: 56 (test method: GB / T265)

[0019] Corrosion (copper sheet at 100°C for 3h): 1 (test method: GB / T5096)

[0020] Characteristic temperature (tested at oil temperature of 80°C) / °C: 690 (test method: JB / T7951 ISO9950)

[0021] Flash point (opening) °C: 210 (test method: GB / T3536)

[0022] Luminosity, class: 1 (test method: SH / 0564)

Embodiment 1

[0024] Add 79 parts of base oil into the reaction kettle and raise the temperature to 50°C. The base oil is 500N second-class base oil; then add 8 parts of refrigerant, and the refrigerant is polyisobutylene with a low molecular weight of 2400; 5 parts of brightener are imidazoline oil. acid salt; 8 parts of antioxidant, using high molecular weight phenolic ester; keep the temperature at 50°C, stir for 1 to 2 hours, and then filter to obtain the product.

[0025] The physicochemical index of present embodiment 1 is as follows:

[0026] Kinematic viscosity (40°C) mm2 / s: 185 (test method: GB / T265)

[0027] Corrosion (copper sheet at 100°C for 3h): 1 (test method: GB / T5096)

[0028] Characteristic temperature (tested at oil temperature of 80°C) / °C: 718 (test method: JB / T7951 ISO9950)

[0029] Flash point (opening) °C: 248 (test method: GB / T3536)

[0030] Luminosity, class: 1 (test method: SH / 0564)

[0031] The oil is used for heat treatment and quenching of bearings. The heat...

Embodiment 2

[0033] Add 98.45 parts of base oil into the reaction kettle and raise the temperature to 70°C. The base oil is 150N second-class base oil; add 1 part of refrigerant, and the refrigerant is polyisobutylene with a low molecular weight of 2400; 0.05 part of brightener is imidazoline oil acid salt; 0.5 parts of antioxidant, using high molecular weight phenolic ester; keep the temperature at 70°C, stir for 1-2 hours, and then filter to get the product.

[0034] The physicochemical index of present embodiment 2 is as follows:

[0035] Kinematic viscosity (40°C) mm2 / s: 30 (test method: GB / T265)

[0036] Corrosion (copper sheet at 100°C for 3h): 1 (test method: GB / T5096)

[0037] Characteristic temperature (tested at oil temperature of 80°C) / °C: 690 (test method: JB / T7951 ISO9950)

[0038] Flash point (opening) °C: 230 (test method: GB / T3536)

[0039] Luminosity, class: 1 (test method: SH / 0564)

[0040] The oil is used for heat treatment and quenching of bearings. The heat treatme...

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PUM

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Abstract

The invention relates to the technical field of quenching media in a heat treatment link in bearing production, in particular to quenching oil for bearings and a preparation method thereof. Each 100 weight parts of quenching oil comprises the following components in part by weight: 79 to 98.45 parts of base oil, 1 to 8 parts of cooling accelerant, 0.05 to 5 parts of brightening agent and 0.5 to 8parts of antioxidant. The high-end class II base oil is taken as a raw material, and is added with the cooling accelerant, the high temperature antioxidant and the brightening agent in different proportions to form the quenching oil for the bearings; after the bearings are quenched by the quenching oil, the bearings are uniformly silvery, the structure and hardness of the bearings meet or exceed the requirements of national standard, and the deformation of the bearings subjected to heat treatment is reduced by 30 percent than a standard value; meanwhile, the service life of an oil product is 5 years, and the cost of the oil product used in a factory is reduced. Meanwhile, the quenching oil has the advantages of energy conservation and environmental friendliness, and can improve the quality of industrial products.

Description

technical field [0001] The invention relates to the technical field of quenching cooling medium in the heat treatment link in bearing production, in particular to a quenching oil for bearings and a preparation method thereof. Background technique [0002] At present, there is no special cooling medium for bearing quenching at home and abroad. Most of the domestic machinery oil and conventional quenching oil are used. The cooling performance of foreign quenching oil products is strong, the quenching cooling range is too wide, and there is no special quenching medium for bearings. However, the requirements for bearing quenching are many and strict, and there are quenching colors. , quenching deformation, microstructure, hardness and other requirements. At present, the quenching oils at home and abroad basically cannot meet or can only meet the quenching requirements of some bearings. For domestic products, after quenching and cooling, the bearings have defects such as mottle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/58
Inventor 耿伟扈林庄雷建中
Owner CHANGZHOU LONGPONT LUBRICANTS
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