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Welding method of high-energy-beam fillet welding seam joint

A welding method and fillet weld technology, which is applied in the field of high-energy beam fillet weld joint welding, can solve problems such as stress concentration, narrow laser weld seam, and low joint bearing capacity

Inactive Publication Date: 2016-02-03
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in fillet joints, if laser self-fluxing welding is performed directly, due to the narrow laser weld, the effective bearing area formed in the fillet weld is small, and because there is no filling material, it is impossible to form a circle outside the fillet weld. Arc transition, easy to cause stress concentration, low joint bearing capacity

Method used

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  • Welding method of high-energy-beam fillet welding seam joint
  • Welding method of high-energy-beam fillet welding seam joint

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Embodiment Construction

[0013] Taking a 5mm thick vertical plate and a bottom plate with a fillet weld at an angle of 90° as an example, the incident energy source is a laser with a focal diameter of 0.6mm.

[0014] Step 1: Fix the vertical plate and the bottom plate at an angle of 90°.

[0015] Step Two: Follow the figure 1 As shown, the incident direction of the laser is adjusted so that the angle α between the incident direction and the base plate is 25°, and the distance L between the center of the laser spot and the base plate is 0.6 mm.

[0016] Step 3: Set parameters for welding, laser power 3.5kW, welding speed 3m / min.

[0017] Step 4: Follow the figure 2 As shown, adjust the incident direction and position of the laser, the laser is incident at 45°, and the incident point is located at the intersection of the two plates.

[0018] Step 5: Set the parameters for welding, the laser power is 2.5kW, the welding speed is 1.5m / min, and the welding wire is filled during welding.

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Abstract

The invention aims to provide a welding method of a high-energy-beam fillet welding seam joint, which is capable of greatly improving force bearing area of the conventional fillet welding seam and improving the bearing capacity of the high-energy-beam fillet welding seam. A high-energy-beam fillet welding seam joint comprises a bottom plate and a vertical plate, wherein the vertical plate and the bottom plate are arranged at a certain angle; the fillet welding seam at junction of the two plates is welded by high-energy beams; the fillet welding seam is welded for two times; an included angle between the energy source incidence direction and the bottom plate is 20-25 degrees during welding for the first time; the incidence position inclines to one side of the vertical plate; the incidence direction is located on an angular bisector between the two plates during welding for the second time; the incidence position is located at an intersection line between the vertical plate and the bottom plate; welding wires are added during welding.

Description

technical field [0001] The invention relates to a method for making fillet welds in welded joints, in particular to a welding method for high-energy beam fillet weld joints. This joint is suitable for high-energy beam welding of electron beams, lasers, etc., and fillet weld joints with a wall thickness exceeding 3mm . Background technique [0002] Electron beam and laser welding methods have been widely used in the field of aerospace in recent years because of their low heat input and small welding deformation. Joint form. However, in fillet joints, if laser self-fluxing welding is performed directly, due to the narrow laser weld, the effective bearing area formed in the fillet weld is small, and because there is no filling material, it is impossible to form a circle outside the fillet weld. The arc transition is easy to cause stress concentration and the joint bearing capacity is low. Contents of the invention [0003] The purpose of the present invention is to provide...

Claims

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Application Information

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IPC IPC(8): B23K15/00B23K26/242
CPCB23K15/0053
Inventor 徐艳利李晓宇
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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