Surface enhanced treatment process for metal bearing of numerically-controlled machine tool

A bearing surface, strengthening treatment technology, applied in the direction of metal material coating process, coating, melting spray plating, etc., can solve the problems of increasing technical difficulty and uneconomical, achieve low wear and stripping rate, prolong rust prevention time, use Life extension effect

Inactive Publication Date: 2018-07-06
MAANSHAN XINQIAO IND DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To make the inside and outside of the material have the ability to resist surface fai

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A process for strengthening the surface of a metal bearing of a numerically controlled machine tool, the steps of which are as follows:

[0024] 1) Surface cleaning and activation: place metal bearings in phosphate buffer solution and soak for 20-30 minutes. The phosphate buffer solution is composed of 0.2M sodium dihydrogen phosphate and 0.2M disodium hydrogen phosphate, and the volume percentage of sodium dihydrogen phosphate is 92%. , the disodium hydrogen phosphate volume percentage is 8%, then adds cleaning activator wherein, and cleaning activator comprises following mass percent components: alkanolamide 5%, 8-hydroxyquinoline aluminum 6%, water-based fumed white carbon black 6 %, p-toluenesulfonic acid 5%, the balance of ethanol aqueous solution, the amount of cleaning activator added is 40% of the phosphate buffer solution, the volume percentage of ethanol in the ethanol aqueous solution is 70%, and then ultrasonic treatment for 5-10min, the ultrasonic treatment ...

Embodiment 2

[0028] A process for strengthening the surface of a metal bearing of a numerically controlled machine tool, the steps of which are as follows:

[0029] 1) Surface cleaning and activation: place the metal bearing in a phosphate buffer solution and soak for 20-30 minutes. The phosphate buffer solution is composed of 0.2M sodium dihydrogen phosphate and 0.2M disodium hydrogen phosphate, and the volume percentage of sodium dihydrogen phosphate is 94%. , the volume percentage of disodium hydrogen phosphate is 6%, then add cleaning activator wherein, cleaning activator comprises following mass percent components: alkanolamide 15%, 8-hydroxyquinoline aluminum 8%, water-based fumed white carbon black 5 %, p-toluenesulfonic acid 10%, the balance of ethanol aqueous solution, the amount of cleaning activator added is 60% of the phosphate buffer solution, the volume percentage of ethanol in the ethanol aqueous solution is 75%, and then ultrasonic treatment for 5-10min, the ultrasonic treat...

Embodiment 3

[0033] A process for strengthening the surface of a metal bearing of a numerically controlled machine tool, the steps of which are as follows:

[0034] 1) Surface cleaning and activation: place metal bearings in phosphate buffer solution and soak for 20-30 minutes. The phosphate buffer solution is composed of 0.2M sodium dihydrogen phosphate and 0.2M disodium hydrogen phosphate, and the volume percentage of sodium dihydrogen phosphate is 93%. , the volume percentage of disodium hydrogen phosphate is 7%, then add cleaning activator wherein, cleaning activator comprises following mass percent components: alkanolamide 20%, 8-hydroxyquinoline aluminum 10%, water-based fumed white carbon black 4 %, p-toluenesulfonic acid 15%, the balance of ethanol aqueous solution, the amount of cleaning activator added is 50% of the phosphate buffer solution, the volume percentage of ethanol in the ethanol aqueous solution is 60%, and then ultrasonic treatment for 5-10min, the ultrasonic treatment...

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Abstract

The invention relates to a surface enhanced treatment process for a metal bearing of a numerically-controlled machine tool. The process comprises the following steps: surface cleaning and activating:putting the metal bearing in a phosphoric acid buffer solution to be soaked for 20-30 min, then adding a cleaning activator thereinto, and carrying out ultrasonic treatment for 5-10 min; nitrocarburizing: putting the metal bearing in a nitrifying furnace, introducing nitrogen, and treating the metal bearing for 2.2-2.4 h at 565+/-2 DEG C; and compound metal paint spraying: coating compound metal powder to the outer layer of the metal bearing by means of plasma beam fusion covering. By means of multi-time enhanced treatment on the surface layer of the metal bearing, the process has an excellentmechanical property, and the toughness and the wear resistance are enhanced remarkably. By selecting a proper raw material proportion, the bonding forces between the coatings and a matrix and betweenthe coatings are great, the wear delamination rate is low, and the service life is prolonged by more than two folds.

Description

technical field [0001] The invention relates to the technical field of surface treatment of metal materials, in particular to a process for strengthening the surface of a metal bearing of a numerically controlled machine tool. Background technique [0002] Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Bearings are widely used in the field of machinery. Commonly used materials for bearing manufacturing include soft matrix hard point bearing alloys and hard matrix soft point bearing alloys. Bearings made of hard matrix soft point bearing alloys have strong load-carrying capacity and are widely used, but their inner surfaces are prone to fatigue failure due to long-term rolling friction with balls, so the bearings need to be strengthened. [0003] At present, the main failure mode of engineering materials is s...

Claims

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Application Information

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IPC IPC(8): C23C8/30C23C8/02C23C4/134C23C4/06C23G1/02C22C19/03C22C29/16C22C32/00
CPCC23C8/30C22C19/03C22C29/16C22C32/0068C23C4/06C23C4/134C23C8/02C23G1/02
Inventor 邢舒雅
Owner MAANSHAN XINQIAO IND DESIGN CO LTD
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