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Processing technology for rare earth reinforced titanium alloy section bar

A processing technology, titanium alloy technology, applied in the field of titanium alloy profile processing technology, can solve the problems of easy wear, reduced life, and easy deformation of tools, and achieve the effects of reducing production costs, reducing wear, and not easily deforming

Inactive Publication Date: 2012-11-14
WUJIANG TIANLONG MACHINERY
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  • Summary
  • Abstract
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Problems solved by technology

However, titanium alloy has always been recognized as one of the difficult-to-machine materials. Because of its small thermal conductivity, low specific heat, and active chemical properties, it brings certain difficulties to mechanical processing.
On the other hand, titanium alloy profiles are not conducive to cutting. The profiles have low thermal conductivity, are easy to form high temperatures, and have slow heat dissipation. After processing, the parts deform and rebound, and are easy to deform. Therefore, due to the large cutting force and high cutting temperature during processing, the tool is easy to wear , life is reduced, these problems have long plagued the processing of titanium alloy profiles

Method used

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Experimental program
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Effect test

Embodiment Construction

[0007] Specifically, the profile processing of titanium alloy combined with the selection of cutting tools adopts the following technical solutions:

[0008] (1) Control the tip temperature

[0009] First of all, the cutting speed should not be too high, about 40~60m / min. If the cutting speed is too high, a large amount of cutting heat will be generated, which will reduce the tool life. Therefore, excessive cutting speed should be avoided. Second, shorten the contact time between the tool and the workpiece. The longer the tool is in contact with the workpiece, the more heat is generated, which reduces tool life. The larger the tool diameter, the longer the contact time, so within the allowable range, a small diameter tool should be used as much as possible. In addition, the cutting fluid is fully used in the processing process to improve the cooling effect. Make full use of cutting fluid, especially ultra-high pressure cutting fluid above 15mpa, to reduce the temperature of...

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Abstract

The invention relates to a processing technology for a rare earth reinforced titanium alloy section bar. The processing technology is characterized by employing a rare-earth element neodymium (Nd) to reinforce and improve the titanium alloy. By adding 1.5-2.5% of neodymium in the alloy, high temperature performance, air tightness and corrosion resistance of the alloy is improved; crystal lattice of the titanium alloy structure are improved; and mechanics performances such as tensile strength, yield strength, hardness, elongation rate and the like, physical performances such as corrosion resistance, high temperature performance and the like, and chemical performances of the material are enhanced significantly. At the same time, problems that cutting tools are easy to wear and service life is shortened, caused by large cutting force and high cutting temperature in the process of the titanium alloy section bar, can be solved by mastering requirements for cutting tools in a titanium alloy process, thereby reducing abrasion of the cutting tools and production cost.

Description

technical field [0001] The invention relates to a metal material for aerospace and belongs to the technical field of titanium alloy profile processing technology. Background technique [0002] At present, due to the development of the aerospace industry, in order to meet the needs of the aviation industry for materials, titanium alloys have been valued and developed. Titanium alloy has become an ideal manufacturing material for aircraft and engines due to its light weight, high strength, good mechanical properties and corrosion resistance. Especially in the future, new fighters will use titanium alloy in large quantities, which will help improve the heat resistance of the aircraft. Reduce the weight of the body and increase the strength of the body. However, titanium alloy has always been recognized as one of the difficult-to-machine materials. Because of its small thermal conductivity, low specific heat, and active chemical properties, it brings certain difficulties to mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00
Inventor 施小弟施国春周兴宝
Owner WUJIANG TIANLONG MACHINERY
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