A kind of process control method of aluminum-steel cmt fusion brazing welding
A welding process and control method technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve the problems of lack of heat and feedback control technology of welding seam surface forming, and achieve easy promotion and application, easy operation , to avoid the effect of excessive temperature
Active Publication Date: 2017-03-15
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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Problems solved by technology
At present, the combination of off-line numerical simulation technology and process test is used to analyze the heat process of aluminum alloy and steel fusion-brazing in depth, which is meaningful to promote the application of aluminum alloy and steel fusion-brazing technology, but this is only offline. Analytical technology, lack of feedback control technology for heat and weld surface shape in the corresponding welding process
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[0049] The present invention will be further described below in conjunction with the accompanying drawings.
[0050] like Figure 1 to Figure 3 As shown, when welding 4mm thick, 5083 aluminum alloy and EH136 steel, the temperature of the near seam area on the 3rd side of the steel plate (10mm from the center of the weld 2) is detected, and the distance sensor 1 is used to scan the weld seam at the same time 2. The ranging sensor 1 moves along the longitudinal direction of the weld 2 at the welding speed V, and reciprocates along the transverse direction of the weld 2 at the speed P, and the movement range is greater than the width of the weld 2; the adjustment range of V is set [80mm / min, 100mm / min], P=600mm / min, the temperature range [T1, T2] near the seam is [770, 800], the welding voltage adjustment range is [12V, 15V], the welding current adjustment range is [80, 120A], the setting margin The ratio A of the height to the width of the weld 2 is A=6; the scale factor N in ...
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The invention discloses an aluminum steel CMT fusion-brazing welding process control method. The aluminum steel CMT fusion-brazing welding process control method comprise the following steps of installing a temperature sensor in an aluminum plate and steel plate weld joint zone and installing a distance measuring sensor above a near-joint zone, wherein the distance measuring sensor moves at the welding speed V in the longitudinal direction and performs reciprocating motion at the speed P in the transverse direction, the moving process from one end to the other end of a weld joint of the distance measuring sensor serves as a period; judging whether welding process is normal or not according to near-joint zone temperature, weld joint width, excess weld metal and wetting angle real-time data within one period, and adjusting welding parameters of a next period. By means of the aluminum steel CMT fusion-brazing welding process control method, the near-joint zone temperature, the weld joint width, the excess weld metal and the wetting angle real-time data are detected through the temperature sensor and the distance measuring sensor in real time, the welding parameters are adjusted, too high temperature of a brazing-side weld joint is avoided, welding surface is smooth, welding quality is improved, operation is simple and convenient, and popularization and application are facilitated.
Description
technical field [0001] The invention relates to a process control method for aluminum-steel CMT welding and brazing, which belongs to the field of metal material processing. Background technique [0002] At present, the welding methods of aluminum and steel mainly include arc welding, friction welding, brazing, explosive welding, diffusion welding, resistance welding and laser welding, which can be divided into three categories: fusion welding, brazing and solid phase welding. For fusion welding, since aluminum and steel are almost insoluble in the solid state, and their thermophysical properties are quite different, hard and brittle Fe-Al intermetallic compounds are easily formed in the welded joint, which seriously deteriorates the joint. The mechanical properties of aluminum alloy / steel fusion welding joints lose their application value. For solid-phase joining methods such as brazing and friction welding, although high aluminum alloy / steel joint strength can be obtained...
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IPC IPC(8): B23K1/00
CPCB23K1/00B23K1/16B23K1/19B23K2101/185B23K2103/20
Inventor 黄燕陈书锦王欢吴铭方
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP