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Reasonable use of seam welding equipment and flanging equipment in can production line
The can production line is equipped with seam welding equipment and flanging equipment, which are prepared for the welding and flanging of the cans respectively. Of course, it is necessary to correctly operate the equipment and strictly control the process, so as to avoid problems.So, how to use these two kinds of equipment in the can production line?
First talk about the use of seam welding equipment in the can production line, to make sure that the electrode pressure during seam welding has a greater impact on the size of the fusion core, the electrode pressure is too high will make the indentation is too deep, at the same time will accelerate the deformation and loss of the welding wheel;And insufficient pressure will produce shrinkage hole, and will contact resistance is too large, easy to make the welding wheel burn and shorten its service life.
Therefore, the size of the nuclear industry should be controlled by welding time, and the amount of overlap should be controlled by cooling time. At a low welding speed, the ratio of welding time to rest time is 1.25:1-2:1, and satisfactory results can be obtained.When the welding speed increases, the solder joint spacing increases, and this ratio must be increased in order to obtain a weld with the same amount of overlap.
Secondly, the welding speed determines the contact area between the welding wheel and the steel plate, as well as the contact time between the welding wheel and the heating part, thus affecting the heating and heat dissipation of the welding seam.When the welding speed increases, the welding current must be increased in order to obtain enough heat.
If the can production line is galvanized steel plate processing, in seam welding should pay attention to prevent cracks, the key is to choose the right process parameters.Practice has proved that the smaller the penetration rate, the fewer cracks and defects.When the seam welding speed is high, the heat dissipation condition is poor, the surface is too hot, the fusion depth is big, then easy to produce cracks.
At present, there are two kinds of flanging process in domestic can production line, one is rolling flanging;Another is mold flanging.Although the two flanging methods are different, the results are basically the same.
Depending on the production line of each can, there are many different flanging angles. In comparison, the larger the flanging Angle, the smaller the diameter of the flanging edge, the smaller the relative deformation, and it is not easy to crack when flanging.
Flanging equipment in the can production line, if the speed is slow, the force transfer is soft, so the possibility of rupture is much less, reduce the flanging quality problems.
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