Where to start to solve the wire cutting molybdenum wire breakage?

Molybdenum wire jitter is more complex and difficult to solve the problem, wire cutting molybdenum wire in the processing area jitter amplitude is relatively large, will make the wire cutting molybdenum wire localized too close to the workpiece, so that the discharge current is too large or pull the arc so as to burn off the molybdenum wire, and at the same time, will make the cutting surface surface surface quality deterioration. Currently more consistent understanding is: minimize the guide link, that is, reduce the number of transmission guide wheel to achieve the purpose of reducing vibration, and at the same time to improve the wire transport system forwards and backwards on the wire cutting molybdenum wire tension consistency.

Of course, the number of guide wheels and so on, that is the design of the wire cutting machine manufacturers, we are in the daily use and maintenance, such as the discovery of jittery wire or different response to check the storage cylinder as soon as possible the guide wheels, or should be replaced in a timely manner wear parts. In general, the guide wheel every 3 months of full load operation, to replace all; silk cylinder bearings every 1.5 ~ 2 years to replace all; storage cylinder to precision grinding round, while doing static balance test. In practice, if the constant tension tight wire system is not reliable, in the processing can not be used, but after each cutting section to stop processing, tight wire, this is because the wire cutting molybdenum wire will be in the processing operation of the stretching of the molybdenum wire to become longer and thinner, the discharge will also make the molybdenum wire loss. In order to avoid the tension is not enough to produce wire cutting molybdenum wire jitter, generally every 4h or so tighten the wire. Processing of pure copper material exception, due to copper cooling fast will back splash to the molybdenum wire, so that the wire cutting molybdenum wire becomes thicker, the tension becomes larger, thus increasing the load on the wire transport system, so that bearings and other transmission parts of the accuracy of the rapid deterioration of the proposed every 2h or so loosening of the wire 10mm or so.

Fast walking wire cutting machine mostly use 0.12 ~ 0.2mm diameter cold drawn molybdenum wire as wire cutting molybdenum wire. On the issue of molybdenum wire, the first thing is to advise your friends to buy genuine molybdenum wire, molybdenum wire on the market is too much fake, you can consult the major molybdenum wire manufacturers to find the local formal dealers to buy, buy molybdenum wire attention to the weight, beware of less than a meter of the wire, and less than a meter often means that this is a fake.

In addition, we should pay attention to the storage of molybdenum wire, pay attention to the vacuum sealed packaging is intact, can avoid oxidation during storage. Molybdenum wire surface oxidation will be easy to break, tensile properties deteriorate, discharge processing is very easy to break the wire, machine tool stability processing time becomes shorter. Buy new molybdenum wire a look at the color, black and shiny with a metallic luster is the new wire, color dark and gray for the oxidized molybdenum wire. Second fold, grab a section of silk, at the same point repeatedly bending, insisting that the more times the quality of the better bending.