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How to reduce the occurrence of burrs in the laser cutting production

How to reduce the occurrence of burrs in the laser cutting production

How to reduce the occurrence of burrs in the laser cutting production  First check if there is a problem with the laser output. Is the spotted spot very round (the circle indicates that the lateral distribution of the laser energy is uniform and the cutting quality is good) Check if the lens in the laser transmission process is dirty, or if the lens is dirty, and the lens has small cracks that are not easily visible to the naked eye, which will affect the transmission of the laser. This is followed by an adjustment of the process parameters. If the burrs generated after laser cutting of stainless steel have a certain hardness, it is very difficult to take time and affect the appearance. It is best to solve it from the root cause. First of all, the purity of the auxiliary gas is high, and it is very important to change the purity of a gas supplier with a better quality. Then the anti-cutting parameters are adjusted to the best, the focal length, cutting speed, power, running time, etc. Sub-adjustment (please let the professional engineer debug), the parameters provided by the machine can not cut the delicate workpiece, so only after many attempts can the burr be minimized

Evaluation of welding and welding process of the use of materials 1, evaluation of welding materials used According to the requirements of the actual working condition and the structure of the corresp

Apr 29, 2019

Evaluation of welding and welding process of the use of materials
1, evaluation of welding materials used
According to the requirements of the actual working condition and the structure of the corresponding technology, put forward the test items necessary. All welded joints will withstand a certain load (dynamic or static load is less, so any requirements of welding structure, almost all the tests of mechanical properties at room temperature and most of them are for the welded joint, and others in the weld metal.
Joint work in high or low temperature conditions, it is necessary to test the corresponding temperature: such as creep rupture strength test, the material to determine the high temperature properties (creep limit and the pupa becomes elongation and creep rate, rupture strength and endurance limit elongation and section shrinkage rate of the corresponding temperature); Charpy V notch impact test to determine the impact of joint under low temperature toughness and impact toughness of the material was measured by the drop weight test; the nil ductility transition temperature.
Corrosive conditions in the medium, the corrosion resistance test should be carried out in different (such as resistance to general corrosion, intergranular corrosion, pitting corrosion, crevice corrosion test). In the wear condition wear test shall be conducted accordingly (such as abrasive wear test, wear test, impact resistance and wear test). Aging embrittlement of materials, joint should be thermal strain aging embrittlement sensitivity test.
2, evaluation of welding materials
Refers to the evaluation of the welded joints have the tendency of welding defects, to make reasonable welding procedure specification (WPS) support. With steel, for example, is the main chemical composition of materials as the basis for indirect assessment of "carbon equivalent" to the joint and crack resistance test of direct test method.

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