Forming method for hollow thin-wall uniform-thickness titanium alloy sealing ring

A forming method and titanium alloy technology, which is applied in the forming field of hollow thin-walled titanium alloy sealing ring with uniform thickness, can solve the problems of prone to fatigue fracture, poor wall thickness uniformity, fatigue fracture, etc.

CN105642727AInactive Publication Date: 2016-06-08刘洋
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-06-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a forming method for a hollow thin-wall uniform-thickness titanium alloy sealing ring, and the forming method adopts a mould (1) and comprises a process method. According to the technical scheme adopted by the invention, polyurethane elastomers are separately arranged at the end head of a left punch of a mould and at the end head of a right punch of the mould, and a paraffin filling extrusion and expansion process method is adopted, so that the problems and the defects of poor quality, a high rejection rate, high cost, and proneness to occurrence of fatigue break hidden trouble in the prior art are overcome, and therefore, the production for the titanium alloy sealing ring achieves the purpose of improving quality, reducing waste products, reducing cost and eliminating the fatigue break hidden trouble.
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Description

technical field

[0001] The invention relates to a forming method of a metal sealing ring, in particular to a forming method of a hollow thin-walled uniform-thick titanium alloy sealing ring used for forming a special-shaped hollow thin-walled uniform-thick titanium alloy sealing ring in an aerospace engine. Background technique

[0002] Metal sealing rings used in aerospace engines not only require high precision and uniform wall thickness, but also need to adapt to high temperature, high pressure, and high speed working conditions. At the same time, they must have good vibration tracking and fatigue resistance. Therefore, aerospace engines choose Titanium alloy sealing ring; the forming of titanium alloy sealing ring, the existing technology adopts the process methods such as swirling pressure forming, low melting point alloy extrusion expansion type or oil pressure expansion type. It will be damaged and prone to fatigue fracture accidents; the wall thickness uniformity of ...

Examples

Embodiment Construction

[0031] refer to Figure 1 to Figure 8 , a method for forming a hollow thin-walled uniform-thickness titanium alloy sealing ring of the present invention includes a mold 1 and a process method, wherein: the mold 1 includes an upper mold 11, a lower mold 12, a left punch 13 and a right punch 14, Described upper die 11 is the steel component that is provided with upper die cavity 111 below, and described upper die cavity 111 is the semi-cavity model of the upper half shape surface of molding product 4, and the left and right sides of upper die cavity 111 are provided with Left and right directions, the semicircular through groove is called upper slideway 112;

[0032] Described lower die 12 is the steel component that is provided with lower die cavity 121 above, and described lower die cavity 121 is the semi-cavity model of molded product 4 lower half, and the left and right sides of lower die cavity 121 are provided with left and right directions. 1. The semicircular through gr...