Rotary joint welding method for main shafts of different materials

A welding end and welding connection technology, which is applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems that the friction welding strength is difficult to guarantee, and achieve the effect of improving welding quality, increasing strength, and increasing friction area

Active Publication Date: 2013-01-16
ZHEJIANG YOULI ELECTRIC & MACHINE
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Problems solved by technology

[0004] Friction welding is usually used for the welding of different materials of shaft parts, which has the advantages of good coaxiality, convenient pro

Method used

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  • Rotary joint welding method for main shafts of different materials
  • Rotary joint welding method for main shafts of different materials
  • Rotary joint welding method for main shafts of different materials

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Example Embodiment

[0020] Such as figure 1 As shown, the screw welding process for large shafts of different materials of the present invention requires punching at the center of the welding end face of the shaft to be welded A1, and a reserved boss at the center of the welding end face of the shaft to be welded B4 before welding. Treatment, the length of the boss on the shaft B 4 is 2-5 mm larger than the depth of the pre-drilled hole on the shaft A 1, which provides a suitable welding gap for the formation of the ordinary welding seam 3.

[0021] The method for screwing and welding different materials with large shafts according to the present invention includes the following steps:

[0022] 1. Match the pre-drilled and reserved boss axis A 1 and axis B 4 with the boss and perform friction pre-welding to obtain figure 2 The friction pre-welded friction weld 2 shown;

[0023] 2. What you get after friction pre-welding figure 2 Normal welding is performed in the gap between the welding end faces of ...

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Abstract

A novel rotary joint welding method for main shafts of different materials is characterized in that the main shafts of two materials to be welded are respectively subjected to reserved boss and drilling processing, bosses and holes are matched and then subjected to rotary joint welding on a friction welder, and shaft end surfaces which are not screwed in position are fastened in normal welding mode. The rotary joint welding method for the main shafts of different materials has the advantages that the bosses and the holes which are reserved through preprocessing increase the friction area of friction welding and provide good coaxiality for shafts; the shafts to be welded are fastened through normal welding so that strength of the shafts is increased and welding quality is improved.

Description

technical field [0001] The invention relates to a welding method for long shafts of different materials, in particular to a method for screwing and welding two big shafts of different materials. Background technique [0002] At present, the shafts used in special occasions require materials to have certain characteristics. Usually, materials with special properties are expensive, and sometimes not the entire shaft needs to have that characteristic. In order to save costs, manufacturers often combine them together Different working sections on the root shaft use different materials, which involves welding problems of different materials. [0003] Friction welding relies on the friction of two end faces to generate heat and melt materials to achieve the purpose of welding. [0004] Usually friction welding is used for welding different materials of shaft parts, which has the advantages of good coaxiality, convenient processing and high efficiency, but for welding different ma...

Claims

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Application Information

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IPC IPC(8): B23K28/02B23K20/12B23K20/24
Inventor 赵延海陈仙军李亚成曹璞钰吕忠斌刘洋
Owner ZHEJIANG YOULI ELECTRIC & MACHINE
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