Titanium or titanium alloy seamless square tube and preparation method thereof

A technology of titanium alloy and square rectangular tube, which is applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of complex preparation, low pipe yield, long production cycle, etc., and achieve simple and easy preparation method, The effect of high dimensional accuracy and continuous production
CN112496052AActive Publication Date: 2021-03-16WESTERN METAL MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WESTERN METAL MATERIAL
Publication Date
2021-03-16

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Abstract

The invention provides a titanium or titanium alloy seamless square tube and a preparation method thereof, and belongs to the field of titanium alloy tube preparation. The method includes the steps: providing a circular tube blank; sequentially carrying out first annealing, first-pass cold rolling, second annealing, straightening and machining treatment of inner and outer surface oxide skin on theround tube blank to obtain a semi-finished round tube; carrying out multi-pass cold rolling on the semi-finished round tube to obtain a seamless round tube with the same perimeter and wall thicknessas a square tube; carrying out third annealing on the seamless round tube to obtain an annealed seamless round tube; forming and straightening the annealed seamless round tube by adopting square tubeforming equipment from round to square gradually to obtain the square tube; and sequentially carrying out fourth annealing and straightening on the square tube to obtain the titanium or titanium alloyseamless square tube. The preparation method is simple and easy to implement, short in construction period and low in cost, no mold is needed, and the titanium or titanium alloy seamless square tubewithout welding seams and high size precision can be obtained.
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Description

technical field

[0001] The invention relates to the technical field of titanium alloy pipe preparation, in particular to a titanium or titanium alloy seamless rectangular pipe and a preparation method thereof. Background technique

[0002] Compared with round pipes with the same cross-sectional area, square rectangular pipes have the advantages of light weight, high strength, large flexural section modulus, metal saving, and easy installation. In order to achieve the purpose of weight reduction, aircraft, military vehicles, tanks, automobiles, etc. have an urgent demand for titanium and titanium alloy square tubes. At present, the methods for producing titanium and titanium alloy seamless square tubes include: plate bending + welding, die drawing method, hot rolling, heating + round tube into square tube, etc. Although the method of plate bending + welding can produce titanium alloy square tubes, the service life of the tubes is greatly reduced due to the existence of welds...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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