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Method for self-lubricating steel balls for precision bearing by ion-plating GLC (graphite-like carbon) coating

A technology of precision bearing and processing method, applied in the field of material manufacturing, to achieve the effects of low vibration amplitude, good stability and slow vibration increase

Inactive Publication Date: 2011-11-02
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant surface treatment technology for ion-plating GLC coatings on steel balls for precision bearings in China at present.

Method used

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  • Method for self-lubricating steel balls for precision bearing by ion-plating GLC (graphite-like carbon) coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step 1: Ultrasonic cleaning is performed on the steel balls to be treated. The specific method of ultrasonic cleaning is: put the steel balls to be treated in acetone solution, ultrasonically clean them for 5 minutes, then put them in ethanol, and ultrasonically clean them for 5 minutes. Rinse with deionized water and dry with cold air. This step can basically remove the oil on the surface of the steel ball.

[0046] Step 2: Place the steel ball obtained in step 1 in the workpiece disk in the vacuum chamber of the magnetron sputtering ion plating equipment, and the work disk keeps the main shaft rotating and axially vibrating in the following steps. The rotation speed is 1r / min, and the axial vibration swing of the working disk is ±20mm; chromium targets and pure graphite targets are placed in the vacuum chamber, and the distance between all chromium targets and graphite targets and the steel ball is guaranteed to be 30mm.

[0047] Step 3: Sputter Cleaning

[0048] T...

Embodiment 2

[0062] Step 1: Ultrasonic cleaning is performed on the steel balls to be treated. The specific method of ultrasonic cleaning is: put the steel balls to be treated in acetone solution, ultrasonically clean them for 16 minutes, then put them in ethanol, and ultrasonically clean them for 16 minutes. Rinse with deionized water and dry with cold air.

[0063] Step 2: Place the steel ball obtained in step 1 in the workpiece disk in the vacuum chamber of the magnetron sputtering ion plating equipment, and the work disk keeps the main shaft rotating and axially vibrating in the following steps. The rotation speed is 10r / min, and the axial vibration swing of the working disk is ±90mm; chromium targets and pure graphite targets are placed in the vacuum chamber, and the distance between all chromium targets and graphite targets and the steel ball is guaranteed to be 105mm.

[0064] Step 3: Sputter Cleaning

[0065] The vacuum chamber in step 2 is evacuated so that the vacuum degree of ...

Embodiment 3

[0078] Step 1: Ultrasonic cleaning is performed on the steel balls to be treated. The specific method of ultrasonic cleaning is: put the steel balls to be treated in acetone solution, ultrasonically clean for 30 minutes, then put them in ethanol, and ultrasonically clean for 30 minutes. Rinse with deionized water and dry with cold air.

[0079] Step 2: Place the steel ball obtained in step 1 in the workpiece disk in the vacuum chamber of the magnetron sputtering ion plating equipment, and the work disk keeps the main shaft rotating and axially vibrating in the following steps. The rotation speed is 20r / min, and the axial vibration swing of the working disc is ±200mm; chromium targets and pure graphite targets are placed in the vacuum chamber, and the distance between all chromium targets and graphite targets and the steel balls is guaranteed to be 180mm.

[0080] Step 3: Sputter Cleaning

[0081] The vacuum chamber in step 2 is evacuated so that the vacuum degree of the vacu...

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Abstract

The invention provides a method for self-lubricating steel balls for a precision bearing by ion-plating a GLC (graphite-like carbon) coating. The method comprises the following steps: ultrasonically cleaning the steel balls to be treated, then washing with deionized water and drying with cold air; placing the dried steel balls in a workpiece disk in a vacuum chamber of magnetron sputtering ion-plating equipment for sputter cleaning; depositing a pure chromium base layer; depositing a transition layer; and depositing a graphitelike working layer. The steel balls treated by the method has the characteristics of strong bearing capacity, high revolving speed, small vibration amplitude and low friction coefficient, thus being applicable to the fields such as aerospace and the like.

Description

technical field [0001] The invention belongs to the technical field of material manufacturing, and in particular relates to a treatment method for realizing self-lubrication of steel ball ion-plated GLC coatings for precision bearings. Background technique [0002] As an important basic part in the field of mechanical equipment, precision bearings (the base material is usually GCr15) directly affect the performance of the mechanical equipment. Precision bearings are usually used in harsh working conditions such as high rotational speed, long fatigue life and high operational stability, and are specifically manifested on the rotating body (steel ball), which requires high vibration accuracy, high-speed rotation, small friction coefficient, and low wear rate and other characteristics. Therefore, improving the wear resistance of steel balls for precision bearings is one of the effective ways to ensure their performance stability. Apply modern surface modification technology t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/35
Inventor 蒋百灵李洪涛贾贵西胡鹏飞
Owner XIAN UNIV OF TECH
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