Electron beam welding protection method
A technology for electron beam welding and material protection, applied in electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of narrow grinding area, poor surface quality, and difficult to clean up with splashes, so as to improve the quality and The effect of work efficiency and cost reduction
Inactive Publication Date: 2015-02-11
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
[0002] The CF-34 combustion chamber case of aviation parts is welded together by the electron beam welding method to the rear case, the front case of the combustion chamber, the outlet guide vane diffuser and the inner outlet guide vane flange, which is a full penetration weld seam , the minimum weld width is required to be 2.1-2.9mm, and higher power is required to meet the minimum weld width requirement. After welding, there is a large splash on the back of the part after welding. The fitter can only remove it by grinding many times. After removing the splash, the surface is still Non-visible traces remain, very poor surface quality
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[0018] Example: such as figure 1 as shown in figure 1 Shown, be the parts that the present invention needs welding, specific embodiment is as follows:
[0019] (1) Treat the surface of the part: In order to ensure a good bonding force of the protective film layer, the protective surface is cleaned, and the cleaned surface is free of oil and foreign matter;
[0020] (2) Prepare protective materials: the viscosity of the coating protectant TURCO FORM MASK522 is within the range of 15±5S, and it can be used directly without adding any diluent during initial use; during use and after a period of time, due to the protection For the volatilization of the solvent in the solvent, it is necessary to add toluene, xylene or a mixture of toluene and xylene as a diluent to dilute the protective material to ensure that the viscosity is within the range of 15±5S, and then stir for 1-1.5 hours; The detection is carried out using a No. 5 Zahn cup viscometer.
[0021] (3) Coating protective ...
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Abstract
The invention discloses an electron beam welding protection method and belongs to the technical field of electron beam welding. The electron beam welding protection method comprises the following processing steps: performing treatment on the surface of a part; preparing a protective material of which the viscosity is ensured to be within a range of 15 plus / minus 5, and stirring for at least half an hour; painting a non-welding area before part welding with the protective material, wherein the distance from the painted area to a welding line is 3-5mm, and the coverage rate is 100 percent; painting for the second time after the part is dried for 5-10 minutes in the air until the protective material evenly covers the non-welding area; curing the protective material: after the area which needs to be protected is painted, drying the part in the air for 1-1.5 hours, then, entering a furnace and curing for 1-2 hours in a drying box at the curing temperature of 80 plus / minus 5 DEG C, and then, welding the part; welding the part with electron beams; manually removing the protective part on the welded part. By adopting the electron beam welding protection method disclosed by the invention, the quality of the part and the work efficiency are greatly improved, and the cost is reduced.
Description
technical field [0001] The invention belongs to the technical field of electron beam welding, in particular to an electron beam welding protection method. Background technique [0002] The CF-34 combustion chamber case of aviation parts is welded together by the electron beam welding method to the rear case, the front case of the combustion chamber, the outlet guide vane diffuser and the inner outlet guide vane flange, which is a full penetration weld seam , the minimum weld width is required to be 2.1-2.9mm, and higher power is required to meet the minimum weld width requirement. After welding, there is a large splash on the back of the part after welding. The fitter can only remove it by grinding many times. After removing the splash, the surface is still Non-visible marks remain and the surface quality is very poor. Especially for the assembly formed after the outlet guide vane diffuser and the inner outlet guide vane flange are welded, due to structural reasons, the gri...
Claims
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Login to View More IPC IPC(8): B23K15/00
CPCB23K15/00B23K15/0033
Inventor 王艳丽陈桂荣魏晓丽田野张斌
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION