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Combined treatment method for prolonging life of oversized shearing equipment tool

A composite treatment and tool life technology, applied in the direction of heating inorganic powder coating, etc., can solve the problem that the tool material cannot meet the special requirements of extraordinary service, achieve small deformation, good hardness and wear resistance, and improve fatigue life. Effect

Inactive Publication Date: 2014-03-26
JIANGSU WANLI MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the cutting tool material of the existing super-large shearing equipment cannot meet the special requirements of super-normal service, and to provide a composite treatment method for prolonging the life of the super-large shearing equipment tool

Method used

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  • Combined treatment method for prolonging life of oversized shearing equipment tool

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Experimental program
Comparison scheme
Effect test

example 1

[0029] 1. First, carry out non-destructive testing on the knives made of superalloy materials, determine the weak areas of the mechanical properties of the knives, and determine the parts of the knives to be compounded.

[0030] 2. Making TiN surface coating:

[0031] First, polish the surface of the cutting tool, then clean the blade of the blade with alcohol, and then apply industrial pure TiO on the part of the blade to be compounded. 2 powder, TiO 2 The thickness of the powder is 1.5mm, and the plasma arc is in N 2 Gas as shielding gas and plasma gas source, N 2 The gas flow rate is 12-18L / min, the plasma arc scans at a speed of 400-600mm / min, and the plasma arc current is 30-60A. The test shows that the TiN layer with a thickness of up to 500 μm can be formed in situ on the surface of the tool steel, and the microhardness can reach HV1800.

[0032] Apply industrial pure TiO to the defective part of the blade 2 The powder layer may have a uniform thickness of 1.5 to 2...

example 2

[0036] The steps are basically the same as in Example 1, except that the absorbing layer in the laser shock step is made of black paint, and the constrained layer is made of glass. After the laser shock is completed, the glass is removed and the black paint in the shock area is cleaned with alcohol.

example 3

[0038] The steps are basically the same as in Example 1, the difference is that in the laser shock step, the absorbing layer is made of aluminum foil, the constrained layer is made of water, and the aluminum foil is removed after the laser shock is completed.

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Abstract

The invention discloses a combined treatment method for prolonging the life of an oversized shearing equipment tool, and relates to the technical field of application of machine manufacturing and material treatment processing. According to the invention, a TiN surface coating is utilized to improve the hardness, abrasive resistance and high-temperature resistance of the oversized shearing equipment tool, and the high-amplitude residual compressive stress layer generated by laser shock is utilized to effectively improve the mechanical property of the oversized shearing equipment tool, and particularly the fatigue life of the material is greatly increased.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing and material processing and processing applications, in particular to the technology of modifying the mechanical properties of knives in super-large shearing equipment. Background technique [0002] In advanced manufacturing technology, laser shock processing technology, as a typical representative of high-energy beam, is a processing method with good prospects. Its principle is that the shock wave induced by high-energy short-pulse laser interacts with the material. The high-pressure shock wave generated improves the mechanical properties of the material, especially the fatigue life. This technology has been widely used in various industries such as mechanical engineering, shipbuilding, aviation, and microelectronics. At present, this technology is mainly used in material modification, metal impact strengthening and forming, and non-destructive testing. [0003] Titanium nitride...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/08C21D10/00
Inventor 任旭东戴文杰殷文元任乃飞崔卫东谢善忠张西良王匀王存堂
Owner JIANGSU WANLI MACHINERY
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