Cold drawing preparation method for TB9 titanium alloy disc round wire with lubricating coating

A technology of lubricating coating and titanium alloy, which is applied in the field of cold drawing preparation of TB9 titanium alloy coiled wire with lubricating coating, can solve the problem of not being able to meet the needs of continuous production of fasteners, affecting the stability of material performance, Long processing procedures and other issues, to achieve the effect of improving the uniformity and stability of adhesion, shortening the production cycle, and reducing production costs

Active Publication Date: 2021-08-06
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of the titanium alloy wire produced by the above-mentioned hot drawing process are: (1) delivery of straight strips and machined surfaces cannot meet the needs of continuous production of fasteners, long processing procedures, and low production efficiency; (2) TB9 The heating temperature for hot drawing of titanium alloy wire is 700°C to 800°C, which will cause oxygenation and hydrogenation of the base metal, which will affect the material properties and the stability of subsequent processing.
The current coating method of TB9 titanium alloy wire is mainly to spray molybdenum disulfide or graphite emulsion lubricant after surface phosphating or fluorine boron treatment, which has uneven adhesion and poor adhesion, low production efficiency and certain pollution.

Method used

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  • Cold drawing preparation method for TB9 titanium alloy disc round wire with lubricating coating
  • Cold drawing preparation method for TB9 titanium alloy disc round wire with lubricating coating
  • Cold drawing preparation method for TB9 titanium alloy disc round wire with lubricating coating

Examples

Experimental program
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Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] Step 1, heat treatment, peeling: the TB9 titanium alloy coiled wire with a diameter of Φ6mm is subjected to solution heat treatment, and then the peeling machine is used to remove the surface oxide until the diameter is Φ5.80mm; the system of the solution heat treatment is: 830 Keep warm for 30 minutes at ℃ and then air cool;

[0028] Step 2, sandblasting: sandblasting the TB9 titanium alloy disc round wire after peeling in step 1; the sandblasting is carried out with white corundum grit with a particle size of 80#;

[0029]Step 3, surface pretreatment: carry out surface pretreatment to the TB9 titanium alloy disc round wire after sandblasting in step 2; The coiled wire material is immersed in the pretreatment reagent, and then the pretreatment reagent is heated to 90°C and continuously stirred and adsorbed, and then dried at 130°C for 1 hour until the surface is precipitated to form a uniform and dense film; the p...

Embodiment 2

[0034] This embodiment includes the following steps:

[0035] Step 1, heat treatment, peeling: the TB9 titanium alloy round wire with a diameter of Φ4.8mm is subjected to solution heat treatment, and then the peeling machine is used to remove the surface oxide scale until the diameter is Φ4.63mm; the system of the solution heat treatment is : Keep warm at 800°C for 40 minutes and then air cool;

[0036] Step 2, sandblasting: sandblasting the TB9 titanium alloy disc round wire after peeling in step 1; the sandblasting is carried out with white corundum grit with a particle size of 80#;

[0037] Step 3, surface pretreatment: carry out surface pretreatment to the TB9 titanium alloy disc round wire after sandblasting in step 2; The coiled wire material is immersed in the pretreatment reagent, and then the pretreatment reagent is heated to 85°C and continuously stirred and adsorbed, and then dried at 140°C for 1 hour until the surface is precipitated to form a uniform and dense fi...

Embodiment 3

[0042] This embodiment includes the following steps:

[0043] Step 1, heat treatment, peeling: the TB9 titanium alloy round wire with a diameter of Φ4.3mm is subjected to solution heat treatment, and then the peeling machine is used to remove the surface oxide scale until the diameter is Φ4.20mm; the system of the solution heat treatment is : Keep warm at 850°C for 10 minutes and then air cool;

[0044] Step 2, sandblasting: sandblasting the TB9 titanium alloy disc round wire after peeling in step 1; the sandblasting is carried out with white corundum grit with a particle size of 80#;

[0045] Step 3, surface pretreatment: carry out surface pretreatment to the TB9 titanium alloy disc round wire after sandblasting in step 2; The coiled wire material is immersed in the pretreatment reagent, and then the pretreatment reagent is heated to 95°C and continuously stirred and adsorbed, and then dried at 130°C for 1 hour until the surface is precipitated to form a uniform and dense fi...

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Abstract

The invention discloses a cold drawing preparation method for a TB9 titanium alloy disc round wire with a lubricating coating. The method comprises the steps that firstly, the TB9 titanium alloy disc round wire is subjected to solid solution heat treatment and then scalped; secondly, sand blasting treatment is conducted; thirdly, surface pretreatment is conducted; fourthly, lubricating coating coating and drying are conducted; and fifthly, the TB9 titanium alloy disc round wire with the lubricating coating is obtained through multi-pass cold drawing. According to the method, the TB9 titanium alloy disc round wire subjected to solid solution heat treatment is sequentially subjected to sand blasting treatment and surface pretreatment, so that a uniform crystal protection layer is attached to the surface of the TB9 titanium alloy disc round wire, the lubricating coating is promoted to be more uniformly and stably attached to the surface of the TB9 titanium alloy disc round wire, the attaching uniformity and stability of the lubricating coating are further improved in combination with a cold drawing process, the TB9 titanium alloy wire rod with the lubricating coating in the wire rod state is prepared, the phenomena of oxygen increasing and hydrogen increasing in the TB9 titanium alloy wire rod are avoided, and the grain size and the structure uniformity both meet the use requirements.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a preparation method for cold drawing of a TB9 titanium alloy coil wire material with a lubricating coating. Background technique [0002] TB9 titanium alloy is a metastable β-type titanium alloy, the nominal composition is: Ti-3Al-8V-6Cr-4Mo-4Zr, its cold forming properties make it one of the main materials for the production of aerospace fasteners in my country, With good cold and hot processing performance, TB9 titanium alloy can obtain high strength and toughness through forging, rolling, wire drawing and solution heat treatment. With the rapid development of my country's aerospace industry and the continuous improvement of the performance requirements of advanced aircraft, the demand for a new generation of titanium alloy fasteners for aerospace has continued to increase. Many domestic fastener manufacturers have imported multiple continuous fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C1/02B21C9/00C21D9/52C22F1/18C23C26/00C23F17/00
CPCB21C1/003B21C1/02B21C9/00C22F1/183C21D9/525C23C26/00C23F17/00
Inventor 李敏娜马保飞肖松涛郭金明吴晨陈贵曾郭学鹏
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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