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Synchronous powder feeding and laser penetration welding method and system

A technology of simultaneous powder feeding and welding methods, applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of low strength, uneven powder filling, poor formability of welding heads, etc., to improve tensile strength and optimize forming. to ensure the effect of light leakage assembly

Pending Publication Date: 2021-07-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for synchronous powder-feeding and light-penetrating welding that can be used for welding particle-reinforced aluminum matrix composites. The principle of in-situ alloying is used to regulate the microstructure of the joint and reduce the brittle phase Al. 4 C 3 The volume fraction of the welded joint is optimized to optimize the formability of the welded joint, thereby solving the problem of uneven powder filling in the existing powder feeding welding technology, resulting in poor formability and low strength of the welded joint

Method used

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  • Synchronous powder feeding and laser penetration welding method and system
  • Synchronous powder feeding and laser penetration welding method and system
  • Synchronous powder feeding and laser penetration welding method and system

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Embodiment 1

[0033] Such as Figure 1-3 As shown, this embodiment provides a synchronous powder-feeding and light-penetrating welding method that can be used for welding particle-reinforced aluminum-based composite materials. The side-axis powder-feeding assisted laser welding system is used for welding and forming, wherein the side-axis powder-feeding assisted laser welding system includes Laser welding probe 2 and side-axis powder feeding device 3; arrange the plates 4 to be welded at intervals to directly form an "I"-shaped groove 5, and the laser welding probe 2 emits the main beam and forms a circular spot on the "I"-shaped groove 5 7. The center of the circular spot 7 is located on the central axis extending along the length direction of the "I"-shaped groove 5, and the "I"-shaped groove 5 occupies 30% to 50% of the transverse diameter of the spot in its width direction 1. The plates 4 to be welded on both sides respectively occupy 25% to 35% of the transverse diameter of the light s...

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Abstract

The invention discloses a synchronous powder feeding and laser penetration welding method. It is characterized in that to-be-welded plates are arranged at intervals to form an I-shaped groove; when the I-shaped groove is filled with alloy powder, the to-be-welded plates on the two sides and the alloy powder filled into the I-shaped groove are irradiated through light spots formed by laser, so that synchronous melting and common solidification of the to-be-welded plates and the alloy powder filled into the I-shaped groove are achieved, and an in-situ alloying welding seam is formed, and the microstructure of a joint is regulated and controlled through in-situ alloying, so that the volume fraction of the brittle phase Al4C3 is effectively reduced, the formability of the welded joint is optimized, the tensile strength of the welded joint is greatly improved, and the welding efficiency and the joint quality are improved. The invention further provides a synchronous powder feeding laser penetration welding system, the structure is simple and reasonable, the microstructure of the joint can be regulated and controlled through the in-situ alloying, the welding efficiency and the quality of the joint are improved, and practicability is high.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method and system for synchronous powder-feeding and light-penetrating welding that can be used for welding particle-reinforced aluminum-based composite materials. Background technique [0002] Silicon carbide particles reinforced aluminum matrix composites have become one of the most widely used metal matrix composites due to their excellent specific strength, specific modulus, and thermal stability. The low volume fraction SiCp / Al (SiC particle reinforced aluminum matrix composite material) composite material used as a structural load-bearing part has been well applied to large, medium and small components such as aircraft wing skins, fighter ventral fins, and brakes. The same structural performance The weight can be reduced by 40%, which greatly saves energy consumption and improves the carrying capacity. However, since SiC p The physical properties of the SiC particle ph...

Claims

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Application Information

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IPC IPC(8): B23K26/26B23K26/70B23K33/00
CPCB23K26/26B23K26/702B23K33/004
Inventor 米高阳张铭洋王春明熊凌达张熊胡溢洋
Owner HUAZHONG UNIV OF SCI & TECH
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