0Cr17Ni4Cu4Nb multi-way pipe forming method and sidewall flanging die employed by same

A technology of flanging molds and forming methods, applied in the directions of forming tools, manufacturing tools, pushing equipment, etc., can solve the problems that parts cannot be integrally formed, improve interchangeability and service life, solve problems with poor accuracy and outstanding guiding significance. Effect

Active Publication Date: 2015-02-18
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides a method for forming multi-way pipe fittings made of 0Cr17Ni4Cu4Nb material and a side wall flanging mold adopted. Difficulties in welding after separate forming; the processing accuracy is increased by an order of magnitude, the processing efficiency is doubled, the unavoidable weld seam in the existing method is reduced, and the fatigue resistance of the parts is greatly improved

Method used

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  • 0Cr17Ni4Cu4Nb multi-way pipe forming method and sidewall flanging die employed by same
  • 0Cr17Ni4Cu4Nb multi-way pipe forming method and sidewall flanging die employed by same
  • 0Cr17Ni4Cu4Nb multi-way pipe forming method and sidewall flanging die employed by same

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as Figure 1-15 As shown, a 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method, the specific steps are as follows:

[0039] Step 1: Use a circular plate as the original blank, the structure of the original blank is as follows figure 1 shown;

[0040] Step 2: Prepare the cylindrical blank: the original blank is prepared into a cylindrical blank with steps by multiple drawing processes, and a flange edge is formed at the opening of the cylindrical blank. The structure of the cylindrical blank is as follows figure 2 shown;

[0041] Step 3: Remove the flange edge of the cylindrical blank. In order to ensure that the flanging of the cylindrical blank can be realized and meet the design requirements, the bottom and side wall of the cylindrical blank are pre-expanded by soft male mold forming before flanging. The p...

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Abstract

The invention belongs to the technical field of 0Cr17Ni4Cu4Nb material forming, and particularly relates to a 0Cr17Ni4Cu4Nb multi-way pipe forming method and a sidewall flanging die employed by the same. The problem that such a part cannot be integrally formed, and is required to be welded after being separately formed is solved; the fatigue resistance of the part is greatly improved. The method specifically comprises the following steps of adopting a plate as an original blank; machining the original blank into a barrel-shaped blank; pre-bulging the bottom and the sidewall of the barrel-shaped blank; forming holes in the bottom of the barrel-shaped blank, and forming holes in the middle part of the sidewall of the barrel-shaped blank; flanging the bottom of the blank; flanging the sidewall of the blank by adopting the sidewall flanging die; removing allowance. The sidewall flanging die comprises a die core, a male die set, a female die, a positioning sleeve, a guide sleeve, an outer sleeve and a lower template.

Description

technical field [0001] The invention belongs to the technical field of 0Cr17Ni4Cu4Nb material forming, and in particular relates to a forming method of a multi-way pipe fitting made of 0Cr17Ni4Cu4Nb material and a side wall flanging mold adopted. Background technique [0002] 0Cr17Ni4Cu4Nb material is a stainless steel material with poor plasticity at room temperature, and it is difficult to form. The multi-way pipe fitting is a stepped cylindrical part with a complex structure. Because the elongation rate of 0Cr17Ni4Cu4Nb material is only about 10% at room temperature, it is very difficult to form multi-way pipe fittings using 0Cr17Ni4Cu4Nb material. The existing technology generally adopts the method of welding after split forming, and the deformation after welding is large. The edge is not round, which has a great impact on the use of subsequent components, and affects the welding quality and safety of use. Contents of the invention [0003] Aiming at the problems exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D45/04B21C37/28B21D35/00
CPCB21C37/286B21D35/002B21D37/10
Inventor 段新民徐志强王立成邵天巍吕义郎
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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