Reasons for wire breakage during molybdenum wire cutting
Everyone in the wire cutting industry knows that molybdenum wire breakage often occurs during the wire cutting process. So why does molybdenum wire always break during wire cutting? In this article, we will try to find out the reasons why molybdenum wire breaks during wire cutting.
Wire cutting molybdenum wire
Under normal circumstances, the diameter loss of molybdenum wire cutting 10000mm2 is about 0.001~0.02mm. Therefore, molybdenum wire should be replaced in time if it wears out too much or exceeds its service life.
The tension of new molybdenum wire should be adjusted first. If the molybdenum wire is too tight, it is easy to break; if the molybdenum wire is too loose, the key molybdenum wire is stretched and short-circuited. Therefore, the tension of the molybdenum wire should be adjusted regularly to the appropriate size.
Wire cutting machine routing mechanism
The conductive block is usually pressed or raised molybdenum wire. Since the molybdenum wire contacts the conductive block for a long time, the conductive block will produce grooves, causing the molybdenum wire to break. Therefore, the conductive block should be rotated to a certain angle regularly or replaced directly.
The molybdenum wire is guided by the guide wheel, so the accuracy of the guide wheel affects the operation of the molybdenum wire. The bearing supporting the guide wheel affects the axial and radial runout of the guide wheel, thereby affecting the stability of molybdenum wire EDM.
Cutting technical parameters
The selection of process parameters has a great influence on molybdenum wire loss. Excessive loss will accelerate wire breakage. The process parameters should be selected according to the specific parts, such as the material of the part, the thickness of the part, the accuracy of the part, etc. This parameter is usually selected by the operator based on experience or through some intelligent technology. For example, optimizing the BP algorithm in neural networks to select cutting parameters.