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Ion carbonitriding treatment device for titanium alloy surface

A carbonitriding and treatment device technology, applied in metal material coating process, coating, cleaning method and utensils, etc., can solve the problems of high brittleness, low bonding force, thin nitride layer, etc., and achieve high temperature stability Guarantee, enhance adhesion and density, good thermal stability effect

Active Publication Date: 2021-11-09
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The nitrided layer obtained by ordinary gas nitriding treatment is thin, brittle and has low bonding force

Method used

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  • Ion carbonitriding treatment device for titanium alloy surface
  • Ion carbonitriding treatment device for titanium alloy surface
  • Ion carbonitriding treatment device for titanium alloy surface

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Embodiment Construction

[0024] The titanium alloy surface ion carbonitriding treatment device that the present invention proposes, its structure is as follows figure 1 As shown, it includes infiltration furnace 1, anode top cover 2, cathode metal column 3, outer layer auxiliary cathode cylinder 6, inner layer auxiliary cathode cylinder 9, anode cylinder 8, insulating support plate 10, workpiece table 11, anode metal column 12 , a DC power supply 14 and a bias power supply 15; the outer layer auxiliary cathode cylinder 6, the anode cylinder 8 and the inner layer auxiliary cathode cylinder 9 are coaxially installed in the bottom of the infiltration furnace 1 cavity from outside to inside in turn, and the outer layer The auxiliary cathode cylinder 6, the anode cylinder 8 and the inner layer auxiliary cathode cylinder 9 are respectively connected to the positive and negative poles of the DC power supply 14, and the upper end of the anode cylinder 8 is lower than the upper ends of the outer layer auxiliary...

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Abstract

The invention belongs to the technical field of titanium and titanium alloy surface treatment, and in particular relates to an ion carbonitriding treatment device for the surface of titanium alloy. The device adopts a dual power supply system and a set of DC power supply to control the auxiliary cathode. By applying voltage to the auxiliary cathode, the ionization of argon gas near the auxiliary cathode can be accelerated, and ion collisions can be excited to accelerate the temperature rise. At the same time, it can play a role in the workpiece and the furnace cavity. Cleaning function; another set of high-frequency pulse bias power supply is connected to the negative electrode of the workpiece, and the positive electrode is grounded, so that the workpiece is at a negative potential. The bombardment of the surface enhances the adhesion and density of the diffusion layer. Ammonia and carbon dioxide are used as infiltration media, and electronically excited ions with high internal energy are formed under the collision of electrons, and an infiltration layer with moderate thickness and uniform structure is obtained, which significantly improves the mechanical properties and tribological properties of titanium.

Description

technical field [0001] The invention belongs to the technical field of titanium and titanium alloy surface treatment, and in particular relates to an ion carbonitriding treatment device for the surface of titanium alloy. Background technique [0002] Titanium and titanium alloys have high specific strength, good biocompatibility and corrosion resistance, excellent high temperature performance, hydrogen storage performance and excellent comprehensive performance such as recycling, with the development of advanced manufacturing technology for processing titanium alloys Production, isothermal forging, precision casting, laser forming and other technologies are becoming more and more mature, which makes titanium alloys have more and more application scenarios. [0003] Due to their low density and high strength, titanium and titanium alloys are very suitable for the weight reduction requirements of the automobile industry, and can be used to manufacture automobile engine valves,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/36B08B7/00B08B9/08
CPCB08B7/00B08B9/08C23C8/36
Inventor 何永勇张哲浩李杨毕永浩王政伟赵福帅
Owner TSINGHUA UNIV
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