A titanium alloy material for making locomotive brake disc bolts and its processing technology

A processing technology, titanium alloy technology, applied in the field of fastening parts and titanium alloy fasteners, can solve the problems of no application of rail transit equipment, continuous expansion of application scope, low density, etc., to improve comprehensive mechanical properties at room temperature, improve High and low temperature mechanical properties, the effect of prolonging the service life

Active Publication Date: 2017-08-04
沈阳泰恒通用技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(6) Small density
At present, the application fields of titanium alloy fasteners involve the fields of aviation, aerospace and chemical industry, and the scope of application continues to expand, and there is no application in rail transit equipment.

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  • A titanium alloy material for making locomotive brake disc bolts and its processing technology
  • A titanium alloy material for making locomotive brake disc bolts and its processing technology

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Embodiment Construction

[0018] The present invention is described in further detail below in conjunction with embodiment.

[0019] A titanium alloy material for making locomotive brake disc bolts, the titanium alloy material contains the following components by mass percentage: Al: 6.0%-6.5%, Cr: 1%-1.5%, Si: 0.15%-0.20%, Mo: 2.6 %-3.3%, Fe: 0.35%-0.45%, Zr: 0.1-0.5%, and the balance is Ti.

[0020] Al: 6.0%-6.2%, Cr: 1.3%-1.5%, Si: 0.18%-0.20%, Mo: 2.7%-3.0%, Fe: 0.38%-0.40%, Zr: 0.3-0.5%, the balance is Ti.

[0021] Al: 6.0%, Cr: 1.4%, Si: 0.18%, Mo: 2.9%, Fe: 0.38%, Zr: 0.5%, and the balance is Ti.

[0022] Al has a solid solution strengthening effect and improves the tensile strength, but high aluminum content will affect its toughness and plasticity, so the content of aluminum should be properly controlled; the strengthening effect of Cr is obvious, but it is prone to uneven structure when working at high temperature for a long time , the creep resistance is low, and the content of Cr should ...

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Abstract

The invention discloses a titanium alloy material for manufacturing locomotive brake disc bolts. The titanium alloy material comprises, by mass, 6.0%-6.5% of Al, 1%-1.5% of Cr, 0.15%-0.20% of Si, 2.6%-3.3% of Mo, 0.35%-0.45% of Fe, 0.1%-0.5% of Zr and the balance Ti. The indoor-temperature comprehensive mechanical properties of locomotive brake system fastening bolts are improved; the high-low temperature mechanical properties of fasteners are improved, and the application temperature range is expanded; and corrosion resistance is improved, and service life is prolonged. The titanium alloy material is suitable for bolts with the nominal diameter smaller than 20 mm.

Description

technical field [0001] The invention belongs to fastening parts, and relates to a titanium alloy fastener, in particular to a special titanium alloy fastening bolt for the brake system of railway rolling stock. Background technique [0002] As the speed of railway trains increases, the performance requirements for components of the rolling stock braking system are getting higher and higher. The main components of the braking system: brake discs and brake pads. The brake discs are connected and fastened to the wheels or axles through fasteners. The role of fasteners in the train braking process is very important. The fastener materials currently used on rolling stock are mainly carbon steel and stainless steel. During the braking process, train brake disc fasteners, like brake discs, need to withstand the harsh working environment. The main performance requirements of brake disc fasteners are as follows: (1) High strength. Since the brake disc fasteners will bear greater s...

Claims

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Application Information

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