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Method for rolling and forming low-oxygen-content pure-titanium precise thin strip coiled material

A technology with low oxygen content and forming method is applied in the field of rolling processing of pure titanium precision thin strip coils, and achieves the effects of high efficiency, simple and easy production method and no anisotropy.

Inactive Publication Date: 2011-04-20
JIANGSU CHENGFEI PRECISION ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems existing in the existing pure titanium precision thin strip coil rolling method, the purpose of the present invention is to provide a low oxygen content pure titanium precision thin strip coil rolling method

Method used

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  • Method for rolling and forming low-oxygen-content pure-titanium precise thin strip coiled material
  • Method for rolling and forming low-oxygen-content pure-titanium precise thin strip coiled material

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Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 Shown, is process flow diagram of the present invention. A rolling forming method of low-oxygen content pure titanium precision thin strip and coil material: the TA2 pure titanium thin coil material with a cold-rolled 2B surface of 1.5mm in thickness is used as a raw material, rolled by a 20-high rolling mill, lye degreased, Recrystallization annealing, secondary cold rolling in 20-high mill, secondary lye degreasing, tension straightening, slitting / cross-cutting, inspection, packaging and warehousing and other processes.

[0023] Among them, the surface roughness of the work rolls in the primary rolling of the 20-high rolling mill is Ra0.7μm, and the pass deformation rate is 40%. The degreasing agent is an alkaline solution with a pH of 10. The recrystallization annealing temperature is 650°C, the holding time is 15 minutes, the argon atmosphere is protected, and the air is rapidly cooled. The surface roughness of the work rolls in the secondary col...

Embodiment 2

[0025] The TA1 pure titanium strip with a thickness of 2mm is used as the raw material, and it is rolled by a 20-roll mill, degreased with lye, recrystallized annealed, cold-rolled twice by a 20-roll mill, degreased with lye, It is made by tension straightening, slitting / cross-cutting, inspection, packaging and warehousing.

[0026] Among them, the surface roughness of the work rolls in the primary cold rolling of the 20-high rolling mill is Ra0.7μm, the pass deformation rate is 50%, the degreasing agent is an alkaline solution with a pH of 10, the recrystallization annealing temperature is 620 ° C, and the holding time is 15 minutes. Argon atmosphere protection, rapid air cooling. The surface roughness of the work rolls in the secondary cold rolling of the 20-high mill is Ra0.50μm, and the deformation rate of each pass is 20%; the surface of the low-oxygen content pure titanium precision thin strip coil has no surface pollution such as an oxygen-rich layer Layer, uniform int...

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Abstract

The invention discloses a method for rolling and forming a low-oxygen-content pure-titanium precise thin strip coiled material. The rolling and forming method is used for rolling the low-oxygen-content pure-titanium precise thin strip coiled material by using a multi-pass twenty high rolling mill and particularly comprises the following steps of: preparing raw materials; performing primary rolling; degreasing; performing recrystallizational annealing; performing secondary cold rolling; performing secondary degreasing; and forming. In the low-oxygen-content pure-titanium precise thin strip coiled material finished product obtained by the method, no surface pollution layers, such as an oxygen enriched layer and the like, are formed on the surface; internal stress is distributed uniformly; no anisotropism exists; the subsequent plastic forming property is high; thickness tolerance is + / - 2percent; camber is 0.3 to 1 millimeter per meter; the surface quality is TR; the surface flatness reaches 1-2I-Unit; and grain size reaches 5 to 6 levels. Compared with the prior art, the method has the advantages that: the low-oxygen-content pure-titanium precise thin strip coiled material obtained by the method has excellent comprehensive performance; and the production method is simple and practicable, low in cost and high in efficiency.

Description

technical field [0001] The invention relates to a rolling processing method of pure titanium precision thin strip and coil, in particular to a rolling forming method of low oxygen content pure titanium precision thin strip and coil. Background technique [0002] In order to ensure that the aircraft body structure has sufficient strength and rigidity, and to reduce the structural mass, materials with high specific strength and specific stiffness are usually used. Common structural forms of aircraft body structure include skin frame structure, integral wall panel structure, honeycomb sandwich or filler sandwich structure, stamping thin shell structure, etc. In recent years, the flight speed of aircraft has developed from subsonic speed to supersonic speed or even hypersonic speed. When the Mach number is 2~3, the surface temperature of the aircraft can reach 200~300℃. For this reason, many structures of the aircraft, such as shells, fuel tanks, air inlets, empennages and fai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/04
Inventor 朱建平
Owner JIANGSU CHENGFEI PRECISION ALLOY
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