Ultra-low-temperature ion implantation strengthening system and ultra-low-temperature ion implantation strengthening method for bearing steel

An ion implantation, ultra-low temperature technology, applied in the field of metal surface strengthening treatment, can solve the problems of many manual operations, low productivity, increased cost, etc., and achieves the effect of controlling a large temperature range, improving strength and toughness, and high stability.

Inactive Publication Date: 2017-09-15
TSINGHUA UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing technology performs ion implantation and ultra-low temperature treatment on bearing steel materials. After ion implantation in the vacuum furnace, the bearing steel materials are generally cooled to room temperature, and then the bearing steel materials are taken out from the vacuum furnace, and then sent to the cryogenic box for low temperature treatment. Cryogenic treatment, first of all, it takes a period of time in the strengthening process of this method, it is not easy to control the cooling temperature, and then inject after cryogenic treatment, it cannot control the low-temperature adsorption during the transfer process and introduce impurity pollution from the injection, which affects the processing quality of the material. This treatment method More manual operations are required, and misoperations are prone to occur. Moreover, vacuum ion implantation requires nitrogen or argon gas source and metal targets, and ultra-low temperature treatment requires liquid nitrogen. The quality of the workpiece is not stable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultra-low-temperature ion implantation strengthening system and ultra-low-temperature ion implantation strengthening method for bearing steel
  • Ultra-low-temperature ion implantation strengthening system and ultra-low-temperature ion implantation strengthening method for bearing steel
  • Ultra-low-temperature ion implantation strengthening system and ultra-low-temperature ion implantation strengthening method for bearing steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] First, use cleaning reagents to remove grease, rust, impurities, organic residues, and ultrasonic cleaning on the surface of the M50 bearing steel material, then use a clean silk cloth to scrub, dry and dry in an oven for 15 minutes. The ultra-low temperature ion implantation strengthening system of the company carries out the ultra-low temperature ion implantation strengthening process on the M50 bearing steel material, puts the obtained M50 bearing steel material into the cooling terminal of the ultra-low temperature ion implantation strengthening system, closes the airtight door of the vacuum chamber, and opens the vacuum chamber. Vacuum system, vacuum to 6.0×10 -4 Pa, while the cooling terminal rotates slowly along its own axis at a constant speed, a gas ion source is used to clean the M50 bearing steel material with a low-energy gas ion beam. An argon gas source with a purity of 99.99% is used, and the ion beam extraction voltage is 2KV. The time is 20 minutes, and...

Embodiment 2

[0086] First, use cleaning reagents to remove grease, rust, impurities, organic residues, and ultrasonic cleaning on the surface of the M50 bearing steel material, then use a clean silk cloth to scrub, dry and dry in an oven for 15 minutes. The ultra-low temperature ion implantation strengthening system of the company carries out the ultra-low temperature ion implantation strengthening process on the M50 bearing steel material, puts the obtained M50 bearing steel material into the cooling terminal of the ultra-low temperature ion implantation strengthening system, closes the airtight door of the vacuum chamber, and opens the vacuum chamber. Vacuum system, vacuum to 6.0×10 -4 Pa, while the cooling terminal rotates slowly along its own axis at a constant speed, the M50 bearing steel material is cleaned with a low-energy gas ion beam using a gas ion source, using an argon gas source with a purity of 99.99%, and the extraction voltage of the ion beam is 1KV. The time is 30 minutes...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an ultra-low-temperature ion implantation strengthening system for bearing steel and an ultra-low-temperature ion implantation strengthening method for bearing steel. The ultra-low-temperature ion implantation strengthening system comprises a vacuum chamber, a cooling tool system, a temperature measurement system and an intelligent control system, wherein the vacuum chamber communicates with a vacuumizing system; a metal ion source and a gas ion source are arranged at the top of the vacuum chamber; the cooling tool system comprises a liquid nitrogen cooling system and an electric refrigeration system, the liquid nitrogen cooling system comprises a liquid nitrogen cooling box arranged outside the vacuum chamber, and the electric refrigeration system comprises a semiconductor electronically-controlled cooler arranged in the vacuum chamber; and the semiconductor electronically-controlled cooler is arranged in a cooling terminal, the liquid nitrogen cooling box is circulated through a circulation pump and a pipeline, and the pipeline extends into the vacuum chamber and makes contact with the semiconductor electronically-controlled cooler. The ultra-low-temperature ion implantation strengthening system disclosed by the invention is capable of completing the storage of lots of process data and automatically executing a complex process, thereby realizing intelligent automatic control on the system; and the system has the functions of fault self-diagnosis, fault warning, online monitoring and the like.

Description

technical field [0001] The invention relates to an ultra-low temperature ion implantation strengthening system and method for bearing steel, belonging to the technical field of metal surface strengthening treatment. Background technique [0002] With the continuous development of my country's national economy, the demand for high-performance bearing products used in aviation, aerospace, medical, petrochemical, natural gas, transportation and other high-end equipment fields is increasing, especially for special bearings used in ultra-low temperature environments, ultra-low temperature bearings Product performance such as wear resistance, fatigue resistance, toughness, hardness and other properties under ultra-low temperature conditions need to be further improved, and the performance and structural characteristics of various bearing steel materials are difficult to change. This requires the ultra-low temperature strengthening treatment technology of bearing steel materials Ther...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C14/48C21D6/04
CPCC23C14/48C21D6/04
Inventor金杰邵天敏
OwnerTSINGHUA UNIV