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Method for connection of aluminum alloy and stainless steel special-section rotary components

A connection method, stainless steel technology, applied in welding equipment, metal processing equipment, welding/welding/cutting objects, etc., can solve the problem of inertia friction welding connection method without aluminum, aluminum alloy and steel, and ensure the welding quality and The effect of drawing size requirements, good joint quality, and satisfactory joint performance

Inactive Publication Date: 2017-06-09
CAPITAL AEROSPACE MACHINERY +1
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Problems solved by technology

[0006] However, there is no relevant technical solution about the inertia friction welding connection method of aluminum, aluminum alloy and steel that can be applied at present, and related work is urgently needed

Method used

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  • Method for connection of aluminum alloy and stainless steel special-section rotary components
  • Method for connection of aluminum alloy and stainless steel special-section rotary components
  • Method for connection of aluminum alloy and stainless steel special-section rotary components

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Embodiment Construction

[0045] The technical solution of the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0046] The present invention is a method for connecting aluminum alloy and stainless steel special profile revolving body components, which is suitable for inertial friction welding of aluminum alloy and stainless steel. The inertial friction welding of aluminum-steel outer cover joints in the transportation pipeline of aerospace launch vehicle is divided according to the process flow. For the three parts before welding, welding process, and after welding, each part has some key points, and these key points need to be comprehensively controlled to obtain good quality inertial friction welded joints. In this embodiment, the profile is figure 1 The double L-shaped structure shown, the diameter of the large end is Φ200mm, the size of the welded joint after processing, that is, the inertial friction welding process of 2219 aluminum alloy w...

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Abstract

The invention belongs to the technical field of material connection, and in particular relates to a method for connecting an aluminum alloy and a stainless steel special profile rotary member. It is suitable for inertial friction welding of aluminum alloy and stainless steel, including the following steps: (1) Preparation before welding, (1.1) Design welding joint; (1.2) Design welding fixture; (1.3) Cleaning before welding; (1.4) Assembly before welding ;(2) welding; welding process parameters: welding speed is 1600 ~ 1800RPM; pressure is 1500 ~ 2000b / in 2 ;Moment of inertia is 800~900b×in 2 ;(3) Post-weld processing; after welding, remove the welding allowance according to the drawing size requirements; start processing from the aluminum alloy side for post-weld processing, firstly carry out rough processing, and start finishing when the wall thickness allowance reaches the thickness set by the system , Control the amount of feed < 0.1mm during the finishing process. Through the above control, the inertia friction welding joint with good quality can be obtained.

Description

Technical field [0001] The invention belongs to the technical field of material connection, and in particular relates to a connection method of aluminum alloy and stainless steel special profile revolving body components. Background technique [0002] In aerospace launch vehicles, the transportation pipeline is a pipeline product that directly contacts the propellant, and the reliability of the connection of the pipeline is very important. Since the oxygen compensator of the conveying pipe is made of stainless steel and the storage tank is made of aluminum alloy, there is a problem of welding of dissimilar metals. In order to further improve the sealing reliability of the conveying pipeline components during placement and use, the dissimilar joints of the conveying pipeline are adopted Flange and external sealing cover (hereinafter referred to as the outer cover) structure. The outer cover is mostly an irregularly shaped rotating body member with different specifications and siz...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/24
CPCB23K20/129B23K20/24B23K2103/20
Inventor 张丽娜赵衍华孙秀京刘敏何胜春田堂振袁德海魏瑞刚厉晓笑朱平萍
Owner CAPITAL AEROSPACE MACHINERY
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