Why is molybdenum wire easy to break when wire cutting?
Wire cutting, a familiar word, but most people do not know what line to use, what to cut, how to operate.In fact, another name of wire cutting is electrical discharge wire cutting, mainly used to process complex shapes and fine structure products, usually with molybdenum wire as the discharge electrode wire. Why use molybdenum wire as wire cutting electrode wire?
What is molybdenum and molybdenum filament?
Molybdenum is a kind of silver refractory metal. In appearance, the metal molybdenum is very similar to tungsten, but has only half the density. Molybdenum is a rare metal on earth. It is not only an essential trace element in life, but also has a very wide range of uses. It has high strength at room and high temperatures due to its strong interatomic binding force.
Molybdenum wire is a metal wire with a purity of ≥99.95%, with a diameter of 0.02 mm to 0.35 mm and a high tensile strength. Used in the industrial workpiece cutting precision, low wire breaking rate, fast processing speed, can achieve a stable long time continuous processing.
Molybdenum wire tension
Under normal circumstances, every cut 10000mm2, molybdenum wire diameter will lose 0.001~0.02mm, in the loss of too much or the end of service life, molybdenum wire should be replaced in time. Whether it is new or in use molybdenum wire, first of all should adjust its tension. If the molybdenum wire is too tight, it is easy to break; If it is too loose, it is easy to short circuit.
Wire cutting machine running
The conductive block is usually connected with the molybdenum wire. As the molybdenum wire contacts the conductive block for a long time and runs for a long time, the contact point will produce grooves, which may break the molybdenum wire. Therefore, the conductive block should be rotated regularly at a certain Angle or directly replaced. In addition, the molybdenum wire is guided by a guide wheel. The precision of the guide wheel will affect the operation of the molybdenum wire, and the bearing supporting the guide wheel will affect the axial and radial runout of the guide wheel, thus affecting the stability of the discharge machining of the molybdenum wire.
