Method for eliminating electron beam welding pore defect
A technology of electron beam welding and porosity, applied in electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as porosity defects
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Embodiment 1
[0044]1) The main measures for assembly quality before welding include: first, strictly control the size of R and chamfer at the root of the joint to make it as small as possible without interference; first, adopt R≤0.3, chamfer 0.3+0.1 ×45°. The second is to use a rotary file to process the exhaust groove on the part substrate, and the gas located in the R and chamfering areas will be removed during the vacuuming process and the welding process. The third is to heat the welding joint with a defocused electron beam before welding the parts, so that the gas located in the machining tool mark expands and escapes, which also helps to reduce the occurrence of pores.
[0045] 2) Optimization of welding parameters
[0046] The parameter test of this embodiment adopts a high-voltage high-vacuum electron beam welding machine, the welding machine model is KS150-G150 (equipment number: 1413008), and the material of the welding component for the test is Ti 2 AlNb (solution-aged state),...
Embodiment 2
[0051] 1) The main measures for assembly quality before welding include: first, strictly control the size of R and chamfer at the root of the joint to make it as small as possible without interference; first, adopt R≤0.3, chamfer 0.3+0.1 ×45°. The second is to use a rotary file to process the exhaust groove on the part substrate, and the gas located in the R and chamfering areas will be removed during the vacuuming process and the welding process. The third is to heat the welding joint with a defocused electron beam before welding the parts, so that the gas located in the machining tool mark expands and escapes, which also helps to reduce the occurrence of pores.
[0052] 2) Optimization of welding parameters
[0053] The parameter test of this embodiment adopts a high-voltage high-vacuum electron beam welding machine, the welding machine model is KS150-G150 (equipment number: 1413008), and the material of the welding component for the test is Ti 2 AlNb (solution aging state...
Embodiment 3
[0058] 1) The main measures for assembly quality before welding include: first, strictly control the size of R and chamfer at the root of the joint to make it as small as possible without interference; first, adopt R≤0.3, chamfer 0.3+0.1 ×45°. The second is to use a rotary file to process the exhaust groove on the part substrate, and the gas located in the R and chamfering areas will be removed during the vacuuming process and the welding process. The third is to heat the welding joint with a defocused electron beam before welding the parts, so that the gas located in the machining tool mark expands and escapes, which also helps to reduce the occurrence of pores.
[0059] 2) Optimization of welding parameters
[0060] The parameter test of this embodiment adopts a high-voltage high-vacuum electron beam welding machine, the welding machine model is KS150-G150 (equipment number: 1413008), and the material of the welding test plate for the test is Ti 2 AlNb (solution-aged state...
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Abstract
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