Cobalt-chromium-tungsten alloy material, cobalt-chromium-tungsten alloy ball for ball screw bearing and preparation method of cobalt-chromium-tungsten alloy ball, and ball screw bearing

A technology of cobalt-chromium-tungsten alloy and ball screw, which is applied in mechanical equipment, belts/chains/gears, transmission devices, etc., can solve the problems of few types of cobalt-chromium-tungsten alloys, high temperature corrosion resistance and high wear resistance, etc. Can not meet the use requirements of ball screw bearings and other problems, to achieve the effect of long service life, good strength and high precision

Active Publication Date: 2016-11-16
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are few types of cobalt-chromium-tungsten alloys available, which often cannot take into account high-temperature corrosion resistance and high wear resistance, and cannot meet the requirements for the use of ball screw bearings in the transmission system of nuclear reactor loading and unloading devices.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]The cobalt-chromium-tungsten alloy ball used for the ball screw bearing of the present embodiment is composed of the following components in mass percentage: 39% cobalt, 36% chromium, 18% tungsten, 3% nickel, 3% graphite, and the balance is iron and unavoidable impurity elements.

[0041] The preparation method of the cobalt-chromium-tungsten alloy ball used for the ball screw bearing of the present embodiment comprises the following steps:

[0042] 1) Take the raw materials cobalt powder, chromium powder, tungsten powder, nickel-chromium alloy powder and graphite powder according to the formula, put them into the ball mill cylinder, and add hard quality alloy grinding balls and dispersion medium acetone, after ball milling for 60 hours, take out and dry and sieve to obtain the mixture;

[0043] 2) The mixture obtained in step 1) is molded by an automatic molding machine, and the pressing pressure is 120 MPa to obtain a compact with a spherical shape;

[0044] 3) Place...

Embodiment 2

[0052] The cobalt-chromium-tungsten alloy ball used for the ball screw bearing of the present embodiment is composed of the following components in mass percentage: 44% cobalt, 32% chromium, 17% tungsten, 3% nickel, 3% graphite, and the balance is iron and unavoidable impurity elements.

[0053] The preparation method of the cobalt-chromium-tungsten alloy ball used for the ball screw bearing of the present embodiment comprises the following steps:

[0054] 1) Take the raw materials cobalt powder, chromium powder, tungsten powder, nickel-chromium alloy powder and graphite powder according to the formula, put them into the ball mill cylinder, and add hard quality alloy grinding balls and dispersion medium acetone, after ball milling for 60 hours, take out and dry and sieve to obtain the mixture;

[0055] 2) The mixture obtained in step 1) is molded by an automatic molding machine, and the pressing pressure is 120 MPa to obtain a compact with a spherical shape;

[0056] 3) Plac...

Embodiment 3

[0064] The cobalt-chromium-tungsten alloy ball used for the ball screw bearing of the present embodiment is composed of the following components in mass percentage: 48% cobalt, 31% chromium, 16% tungsten, 2% nickel, 2.5% graphite, and the balance is iron and unavoidable impurity elements.

[0065] The preparation method of the cobalt-chromium-tungsten alloy ball used for the ball screw bearing of the present embodiment comprises the following steps:

[0066] 1) Take the raw materials cobalt powder, chromium powder, tungsten powder, nickel-chromium alloy powder and graphite powder according to the formula, put them into the ball mill cylinder, and add hard quality alloy grinding balls and dispersion medium acetone, after ball milling for 50 hours, take out and dry and sieve to obtain the mixture;

[0067] 2) The mixture obtained in step 1) is molded by an automatic molding machine, and the pressing pressure is 130 MPa to obtain a compact with a spherical shape;

[0068] 3) Pl...

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Abstract

The invention discloses a cobalt-chromium-tungsten alloy material, a cobalt-chromium-tungsten alloy ball for a ball screw bearing and a preparation method of the cobalt-chromium-tungsten alloy ball, and the ball screw bearing. The cobalt-chromium-tungsten alloy material is prepared from the following components in percentage by mass: 38 to 48 percent of cobalt, 31 to 41 percent of chromium, 16 to 18 percent of tungsten, 2 to 3 percent of nickel, 2 to 8 percent of graphite and less than or equal to 1 percent of iron and unavoidable impurity elements. With cobalt, chromium, tungsten, nickel and graphite which are used as main components, the cobalt-chromium-tungsten alloy material has the characteristics of resistance to corrosion and wear, high precision, long service life and the like, and can completely meet the requirements on a use environment and the performance of the ball screw bearing in a nuclear reactor loading and unloading device transmission system.

Description

technical field [0001] The invention belongs to the technical field of bearing ball materials and preparation, and specifically relates to a cobalt-chromium-tungsten alloy material, and also relates to a cobalt-chromium-tungsten alloy ball for ball screw bearings using the material and a preparation method thereof, and the use of the material Ball screw bearings with cobalt-chrome-tungsten alloy balls. Background technique [0002] Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repeated force. It also has high precision, reversibility and high precision. Features of efficiency. Due to its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. In the transmission system of the nuclear reactor loading and unloading device with the ball screw as the transmission mechani...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/05B24B1/00F16H25/22
CPCB24B1/00C22C1/05C22C19/07C22C27/06C22C30/00F16H25/2204
Inventor 冯颖于琦孔永刚李夏张永乾张玲孙永安赵加帮
Owner LUOYANG BEARING RES INST CO LTD
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