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Friction welding method for bidirectional embedding and mechanical reinforcing of heterogeneous materials

A heterogeneous material, friction welding technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of high stress, low radial strength, poor toughness, etc., to save welding costs, improve welding The effect of improving the welding strength

Active Publication Date: 2022-01-25
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the problems existing in the prior art above, the object of the present invention is to provide a friction welding method for two-way fitting mechanical reinforcement of heterogeneous materials, which can realize "W" type two-way fitting mechanical reinforcement between heterogeneous materials. Strong, can improve welding forming, promote the improvement of welding ability, effectively solve the problems of low axial and radial strength, poor toughness, and large stress of welded joints between heterogeneous materials, high welding efficiency and good welding quality

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  • Friction welding method for bidirectional embedding and mechanical reinforcing of heterogeneous materials
  • Friction welding method for bidirectional embedding and mechanical reinforcing of heterogeneous materials
  • Friction welding method for bidirectional embedding and mechanical reinforcing of heterogeneous materials

Examples

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Embodiment 1

[0035] This embodiment takes high-strength steel and aluminum alloy pipe fittings as an example, such as Figure 1~3 As shown, a friction welding method for two-way embedded mechanical reinforcement of heterogeneous materials is characterized in that:

[0036] S001. Structural design of welded joints: For high-strength steel pipe fittings 10 with high strength and high hardness, an annular inner groove 11, an annular boss 12 and an annular outer groove are sequentially processed outward from the central axis on the end surface to be welded 13, and the inner groove 11 and the outer groove 13 are close to the boss 12, and the inner groove 11, the boss 12, the outer groove 13, and the high-strength steel pipe fitting 10 are coaxial; for aluminum alloy pipe fittings with low strength and low hardness 20. An annular welding groove 21 is processed on the surface to be welded and the welding groove 21 corresponds to the boss 12. The welding groove 21 is coaxial with the aluminum allo...

Embodiment 2

[0045] This embodiment takes high-strength steel and aluminum alloy pipe fittings as an example, such as Figure 1~3 As shown, a friction welding method for two-way embedded mechanical reinforcement of heterogeneous materials is characterized in that:

[0046] S001. Structural design of welded joints: for high-strength steel pipe fittings 10 with high strength and high hardness, an annular inner groove 11, an annular boss 12 and an annular outer concave are sequentially processed outward from the central axis on the end surface to be welded groove 13, and the inner groove 11 and the outer groove 13 are close to the boss 12, the inner groove 11, the boss 12, the outer groove 13, and the high-strength steel pipe fitting 10 are coaxial; for aluminum alloys with low strength and low hardness The pipe fitting 20 has an annular welding groove 21 processed on its surface to be welded and the welding groove 21 corresponds to the boss 12. The welding groove 21 is coaxial with the alumi...

Embodiment 3

[0055] This embodiment takes high-strength steel and aluminum alloy pipe fittings as an example, such as Figure 1~3 As shown, a friction welding method for two-way embedded mechanical reinforcement of heterogeneous materials is characterized in that:

[0056] S001. Structural design of welded joints: for high-strength steel pipe fittings 10 with high strength and high hardness, an annular inner groove 11, an annular boss 12 and an annular outer concave are sequentially processed outward from the central axis on the end surface to be welded groove 13, and the inner groove 11 and the outer groove 13 are close to the boss 12, the inner groove 11, the boss 12, the outer groove 13, and the high-strength steel pipe fitting 10 are coaxial; for aluminum alloys with low strength and low hardness The pipe fitting 20 has an annular welding groove 21 processed on its surface to be welded and the welding groove 21 corresponds to the boss 12. The welding groove 21 is coaxial with the alumi...

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Abstract

The invention provides a friction welding method for bidirectional embedding and mechanical reinforcing of heterogeneous materials. The method sequentially comprises the following steps that S001, structural design of a welding joint is carried out; S002, a welding clamping tool carries out machining; S003, treatment before welding is conducted; S004, friction welding is carried out; and S005, post-welding treatment is carried out. According to the method, welding joint structures of an inner groove (11), a boss (12) and an outer groove (13) are sequentially machined on a to-be-welded end face of a hard material with high strength and high hardness from a central shaft to the outside, and a welding joint structure of a welding groove (21) is machined on a to-be-welded face of a soft material with low strength and low hardness. W-shaped two-way embedding and mechanical reinforcing between the heterogeneous materials is achieved, the welding area is gradually increased to improve welding forming and promote improvement of the welding capacity, the problems that after the heterogeneous materials are welded, a connector is low in axial and radial strength, poor in toughness, large in stress and the like are effectively solved, the welding efficiency is high, and the welding quality is good.

Description

technical field [0001] The invention relates to the technical field of solid-phase welding, in particular to a friction welding method for two-way embedded mechanical reinforcement of heterogeneous materials. Background technique [0002] The welding structure of heterogeneous materials can not only meet the different requirements of different working conditions for materials, but also save valuable materials, reduce costs, and give full play to the performance advantages of different materials. Welded structures of heterogeneous materials are widely used in aerospace, electric power, machinery and other industries. [0003] Compared with the same material, heterogeneous materials often have poor weldability due to significant differences in physical, chemical properties, and chemical composition. There are common problems such as low strength, high stress, and poor toughness of welded joints. The axial tensile strength, elongation after fracture and other indicators, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/24B23K20/26
CPCB23K20/12B23K20/24B23K20/26
Inventor 付扬帆吴护林李忠盛陈大军黄安畏吴厦丛大龙莫非
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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