Titanium alloy thin-wall seamless lining straight cylinder section superplastic forming wall thickness uniformity control method

A superplastic forming and titanium alloy technology, applied in forming tools, manufacturing tools, metal processing equipment, etc., can solve problems such as failure to meet precision requirements, excessive wall thickness, and uneven distribution of wall thickness in the straight section of the lining, and achieve wall thickness Good control accuracy and stability, short forming time, and reduced mold cost
CN112974614AActive Publication Date: 2021-06-18AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
Publication Date
2021-06-18

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Abstract

The invention discloses a titanium alloy thin-wall seamless lining straight cylinder section superplastic forming wall thickness uniformity control method, and belongs to the technical field of plastic processing. According to the method, a small-caliber lining spinning part with the variable wall thickness is adopted for conducting superplastic bulging, firstly, a thinning area is machined on a straight cylinder section of the lining spinning part, an original equal-thickness straight cylinder section is machined into a variable-wall-thickness pipe with the same annular direction and axial gradient distribution, and then superplastic bulging is conducted. According to the method of the invention, through the special wall thickness gradient design, the wall thickness distribution of the straight cylinder section of the bulged titanium alloy lining can be adjusted, a large-diameter lining blank with the thickness of the straight cylinder section being evenly distributed is obtained, the requirement for subsequent machining thinning wall thickness tolerance is met, meanwhile, control measures are taken for cooling of the lining blank, and the dimensional stability of the formed titanium alloy lining is ensured. The method is suitable for titanium alloy thin-wall seamless linings with various diameters, which are integrally formed by spinning / superplastic.
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Description

technical field

[0001] The invention belongs to the technical field of superplastic forming, and in particular relates to a preparation method of a novel titanium alloy thin-walled seamless lining. Background technique

[0002] As a key component of the pressurized delivery system of aerospace models such as launch vehicles, strategic / tactical missiles, and deep space probes, the titanium alloy lining for composite gas cylinders usually adopts the "forging + welding" method, but with the development of aerospace models, It cannot meet the requirements in terms of reliability, weight reduction and advancement, so a new process is urgently needed to realize the continuous integrated forming of titanium alloy lining to replace the current process route.

[0003] The titanium alloy lining precision spinning / superplastic forming integrated technology uses small-sized pipes as raw materials, and the two ends are closed and spun to form a weldless lining blank, and then superplasti...

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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