How to Implement the Wire Cutting?
When CNC high speed wire cutting processing of aluminum materials, the conductive block wear serious, and conductive block above soon formed deep groove. Aluminum material is essential in the production and processing of metal, it is impossible to give up the application, so it is necessary to solve this problem, the following we come to see which aspects should be processed.
1 pulse electrical parameters of reasonable collocation: high-speed CNC WEDM, wide pulse width is easy to produce relatively large alumina or stuck to the surface of a alumina particles, pulse interval is too small will produce larger particles. And the electrode wire is easy to adhere to these larger particles, which brings a lot of negative influence to the process. Increasing the load voltage amplitude of the pulse power supply can reduce the possibility of processing chip's litter to the electrode wire by reducing the pulse width and the gap of the process.
2, the working fluid requirements: the commonly used aqueous emulsion as CNC high speed wire cutting working liquid and conventional allocation ratio is 1:10 (1 part emulsion, water, 10), and processing of aluminum material, should adopt 3:8 ratio. In order to keep the working fluid of the Qing Gu the normal work effectively, and prolong using period of the working fluid, the use of thick sponge, to prevent debris flow tank, to maintain the smooth flow of the working fluid, reduce the adhesion of electrode wire on the processing chip. Regular cleaning or replacement of the sponge pad. The upper and lower water spray amount of the working fluid should be uniform, so that the corrosion in time can be eliminated.
3, the operation skills: in line frame at the rear end of the slot with a sponge, high - speed wire electrode by sponge friction, remove part of the adhesion of the oxide, reduce oxides of wear and tear on the conductive block and reduce the jitter of the electrode wire and make sure that the pulse power supply efficiency of normal play. Also pay attention to the working position of the replacement of conductive block.
The above method is not only suitable for cutting aluminum material, for some special material processing, such as conductive ceramics, silicon nitride and boron nitride, also can be used for reference. If the line cutting of large quantities of aluminum processing, then processing will more prominent, with the adoption of the above measures cannot fundamentally problem solving, which requires to consider from the angle of machine tool transformation, is no longer used conductive block in an electric way, such as the use of wire cylinder into the electric can be applied to production and processing.
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