Non-penetrating welding method of feed components through electron beams
A welding method and a technology of feeder components, which are applied in electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of welding deformation in the heat-affected zone with large output heat, uneven surface weld formation, and high electron beam power density, etc. problems, to achieve the effect of eliminating "nail-shaped" defects and pores, improving welding strength and reliability, and avoiding welds that are too narrow
A welding method and a technology of feeder components, which are applied in electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of welding deformation in the heat-affected zone with large output heat, uneven surface weld formation, and high electron beam power density, etc. problems, to achieve the effect of eliminating "nail-shaped" defects and pores, improving welding strength and reliability, and avoiding welds that are too narrow
CN104227218AActive Publication Date: 2014-12-24四川泛华航空仪表电器有限公司
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[0016] The present invention will be further illustrated in the following examples, which are only used to illustrate the present invention and not to limit the present invention.
[0017] see figure 1 . The feed assembly consists of a feed sheet 1 and a bushing 2 below it. Electron beams can be used to penetrate and weld the upper feeder sheet and the lower casing into one body. The welding material is hard aluminum alloy, and the welding thickness is 1+1 mm.
[0018] First, insert the acid-washed bushing into the equal-diameter groove of the fixture, install the feeder piece on the bushing, and use the rigid fixing method to use the pressure plate on the fixture to be "symmetrical at eight points on the left and right, and pressed up and down to fix it", so that the bushing Fit and press the feed piece, the pre-tightening force in the up and down direction is adjusted by the spring washer on the screw, a copper rod of equal diameter is inserted into the casing, and the tw...
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The invention discloses a non-penetrating welding method of feed components through electron beams. According to the non-penetrating welding method, the needed technological process is simple, efficiency is high, deformation is little, welding seams are regular, welding precision is high, and the product percent of pass can be 100%. The non-penetrating welding method is realized through the technical scheme that in the welding process, scanning waveforms of the electron beams are set to be oval, the scanning amplitude in the X direction is set to be 2 mm to 3 mm, the scanning amplitude in the Y direction is set to be 4 mm to 6 mm, the scanning frequency is set to be 80 Hz to 100 Hz, the acceleration voltage is set to be 50 kV to 60 kV, the beam current is set to be 10 mA to 15 mA, the focus current is set to be 800 mA to 900 mA, any one set of specific values of is selected from the process parameters, the beam slope is set to be in an isosceles trapezoid shape, ascending time and descending time of the electron beams are both set to be 3s to 5s, and the welding seams are welded in a deflection scanning mode; the electron beams penetrate through feed pieces on a sleeve pipe to weld the feed pieces and the sleeve pipe under the feed pieces together. The non-penetrating welding method solves the problems that a conventional welding process is complex, thermal deformation is serious, and burning through and open solder are likely to happen.
Description
technical field [0001] The invention relates to an electron beam non-penetrating welding method for a power feed assembly, in particular to the electron beam non-penetrating welding which is suitable for parts structure design requirements. Background technique [0002] The feed assembly is a typical product on the fuel measurement and control system, and its manufacturing accuracy directly affects the important characteristics of the fuel measurement and control system. Therefore, there are strict requirements on the welding of feed components. Generally, there are two main processing methods for welding feed components: brazing and fusion welding. As the last process, there is no residual processing after welding, so the requirements for welding deformation control are strict, and the weld seam is not allowed to penetrate the casing, otherwise the feeder cannot pass through. Using the conventional welding method—brazing, the output heat is too large, the heat-affected zo...
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Patent Timeline
24 Dec 2014
Publication
CN104227218A
- IPC
- B23K15/00; B23K15/02
- CPC
- B23K15/0053
- Inventors
- 傅志勇