Crystallizer for continuous casting of titanium alloy pipes

A technology of titanium alloy and crystallizer, applied in the field of metal material preparation and processing, can solve the problems of high production cost, large thickness tolerance of tube blank, application limitation, etc., to improve metallurgical quality and surface quality, speed up melting speed, improve The effect of work efficiency

Inactive Publication Date: 2015-11-11
NANJING UNIV OF TECH
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Problems solved by technology

However, due to the difficulty in the development and processing of titanium alloy tubes, the high production cost has limited its application.
For example, for the preparation of titanium and titanium alloy seamless pipes with relatively mature technology at home and abroad, the process waste rate of the drilling extrusion method is as high as 10% to 15%. slightly bigger

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  • Crystallizer for continuous casting of titanium alloy pipes

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Embodiment Construction

[0017] Such as figure 1 A mold for continuous casting of titanium alloy pipes is shown, including an outer mold 1, an inner mold 2 and a cooling system, the outer mold 1 is located in the casting chamber 4, and a through hole hole, the inner mold 2 is located in the through hole of the outer mold 1, there is a gap between the outer wall of the inner mold 2 and the inner wall of the through hole of the outer mold 1, and the upper end of the inner mold 2 passes through the load-bearing rod 5 Connected to the top of the casting chamber 4, the lower end of the inner mold 2 is movably connected with a piston plate 6, and the piston plate 6 is movably connected in the through hole of the outer mold 1, and the bottom of the piston plate 6 is connected to the ingot rod 7 Want to connect, the upper and lower ends of the outer mold 1 are also respectively provided with a feed track 8 and a discharge track 9, and one end of the feed track 8 located in the casting chamber 4 is arranged on...

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Abstract

The invention relates to a crystallizer for continuous casting of titanium and titanium alloy pipes. Titanium alloy pipe blank with different size requirements can be continuously cast under the protection of argon or the atmosphere of inert gases. An outer mold of the crystallizer controls the cooling speeds and temperatures of different areas through a three-section water cooling system, and thus the metallurgical quality of pure titanium and titanium alloy pipe blank is guaranteed. Meanwhile, an ingot pull rod rotates at a certain speed while the blank is pulled downwards, and hence the metallurgical quality and surface quality of the pipe blank are effectively improved. The produced titanium and titanium alloy pipes are even in ingredients and free of segregation and metallurgical quality defects. The machining cost of the titanium alloy pipes is lowered by about 30%.

Description

technical field [0001] The patent of the invention relates to a continuous casting crystallizer for preparing titanium and titanium alloy pipes, which belongs to the field of metal material preparation and processing. Background technique [0002] Titanium alloy has high specific strength, good fatigue strength and crack growth resistance, excellent corrosion resistance, high temperature and low temperature resistance, so it is widely used in aviation, aerospace, shipbuilding, electric power, energy, petroleum and chemical industries. prospect. Among them, titanium alloy tubes are often used as aviation hydraulic pipelines, rocket engine fuel conduits, condensers, heat exchangers and oil well pipelines. However, due to the difficulty in the development and processing of titanium alloy tubes and the high production costs, their application is limited. For example, for the preparation of titanium and titanium alloy seamless pipes with relatively mature technology at home and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/14
Inventor 常辉董月成李峰崔予文鲁晓刚周廉
Owner NANJING UNIV OF TECH
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