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Application of Titanium Alloy Piston and Connecting Rod Group on Diesel Locomotive and Its Process Method

A technology of piston connecting rod and process method, which is applied in the field of rail transit, can solve the problems of low elastic modulus and yield strength of aluminum parts, affecting life, and heavy steel parts, etc., to achieve high strength, uniform force, The effect of long service life

Active Publication Date: 2017-12-22
沈阳泰恒通用技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] Steel parts have problems such as being too heavy, poor anti-corrosion performance, and fracture affecting service life
[0025] Aluminum parts suffer from low elastic modulus and yield strength

Method used

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  • Application of Titanium Alloy Piston and Connecting Rod Group on Diesel Locomotive and Its Process Method
  • Application of Titanium Alloy Piston and Connecting Rod Group on Diesel Locomotive and Its Process Method
  • Application of Titanium Alloy Piston and Connecting Rod Group on Diesel Locomotive and Its Process Method

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0046] A titanium alloy used to manufacture a piston connecting rod group. In order to prevent friction and wear between dissimilar metals, the parts of the piston connecting rod group use the same titanium alloy raw material. The performance indicators of the titanium alloy material are shown in Table 4:

[0047]

[0048] Table 4

[0049] Titanium alloy by mass percentage is:

[0050] The Al content is 5.5-6.5%, the Mo content is 0.5-1.5%, the V content is 3.5-4.5%, the Fe content is less than 0.25%, the O content is less than 0.15%, and the balance is Ti.

[0051] Titanium alloy by mass percentage is:

[0052] The Al content is 5.8-6.2%, the Mo content is 0.8-1.2%, the V content is 3.8-4.2%, the Fe content is less than 0.25%, the O content is less than 0.15%, and the balance is Ti.

[0053] Titanium alloy by mass percentage is:

[005...

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Abstract

The invention discloses a titanium alloy. According to mass percentage, the content of Al is 5.5-6.5%, the content of Mo is 0.5-1.5%, the content of V is 3.5-4.5%, the content of Fe is less than 0.25%, and the content of O is less than 0.15%. , and the remainder is Ti. The process method of manufacturing piston connecting rod group with titanium alloy, the first step is melting and casting ingot; the second step is forging; the third step is heat treatment; the fourth step is machining; the fifth step is ultrasonic flaw detection; the sixth step is finished product. The titanium alloy piston crown is rough machined after finish machining; the titanium alloy piston ring is surface polished; the titanium alloy piston pin is surface polished; the titanium alloy connecting rod is polished; Hair pieces, and then finishing. The invention reduces the weight of the piston system of the diesel locomotive by 35-50%, has higher strength than the steel piston pin, longer service life than the steel piston pin, and far better corrosion resistance than the steel piston pin.

Description

technical field [0001] The invention belongs to the technical field of rail transportation. At present, titanium alloy is applied in the field of rail transportation. It relates to weight reduction, anti-fatigue and anti-corrosion of diesel engine piston connecting rod groups, and particularly relates to new structures, new materials, and materials of titanium alloy piston connecting rod groups. New Technology. Background technique [0002] Titanium alloy has high strength, low density, low elastic modulus, excellent fatigue resistance and corrosion resistance. Titanium will not break, will not rust, and will not corrode in any atmospheric environment. Titanium is so resistant to corrosion that it doesn't even require any paint treatment. Titanium alloy materials with so many advantages have not been applied in rail transit equipment. [0003] The density of titanium alloy is 4.5g / cm 3 , which is 57% of the density of steel, and its strength is equivalent to that of stee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22F1/18B23P15/00
Inventor 单宇航周杰王永伟高岭昕
Owner 沈阳泰恒通用技术有限公司
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