Effective Ways To Avoid Laser Welding Deformation-superwave Laser Welding Machine
In order to reduce the problem of laser welding deformation and improve the welding quality of stainless steel plate, the specific operation method can be obtained from the optimization of welding process parameters.
3.1 actively introduce orthogonal experiment method
Orthogonal experimental method mainly refers to a mathematical statistical method to analyze and arrange multifactor test by orthogonal table. It can take advantage of fewer experiments to obtain valid results and deduce the best implementation plan. At the same time, it can also conduct in-depth analysis and obtain more relevant information to provide basis for specific work. Generally choose the welding current, pulse width, and mainly studies as the object, such as the laser frequency will welding deformation as the indexes, should be controlled to the minimum, and adhere to the principle of reasonable, control factor levels in the appropriate range. For stainless steel plates with A thickness of 0.5 mm, the current can be controlled between 80 and 96I/A; The frequency is between 2~ 5f/Hz.
3.2 orthogonal table selection
Normally, test factors level number should be consistent with the horizontal orthogonal table, number of factors should be less than the number of columns in the orthogonal table, the reasonable design of orthogonal table can provide support and assistance for subsequent research.
3.3 analysis of the extreme difference of test results
Through the thickness of 0.5 mm stainless steel plate test result, poor each column are not equal, and prove that each factor has particularity, different level is different, the effects of impact on laser welding deformation of current, pulse width and frequency, considering various factors, the laser welding process parameters should be best current control 85 a, pulse width of 7 ms, frequency of 3 hz, the welding process parameters are controlled in three numerical can guarantee minimum thickness of 0.5 mm stainless steel plate welding deformation.
For stainless steel plate with a thickness of 0.8mm, it is necessary to control the current, pulse width and frequency of the stainless steel plate at 124A, 8ms and 4Hz respectively. The stainless steel plates with a thickness of 1mm are 160A, 11MS and 5Hz respectively. In the process of laser welding, the welding personnel control the parameters within a reasonable range, not only improve the welding quality and efficiency, but also avoid the deformation of steel plate to meet the production demand. Along with the rapid development of science and technology, technology is developing to control deformation, such as the finite element simulation application in the welding deformation control, by using welding temperature and stress to avoid welding deformation problems, improve stress balance of stainless steel plate, in avoiding the steel plate welding deformation at the same time, also can improve the quality of welding, so as to promote the healthy development of the related areas.