Performance comparison of PCD drawing die and cemented carbide drawing die

Compared with the hard alloy, the tensile strength of polycrystalline diamond is only common hard alloy 70%, but the hardness is 2.5 times that of hard alloy. Thus, the polycrystalline diamond die has more advantages than the hard alloy die. Drawing die made of wear resistance of polycrystalline diamond, bore wear uniform, strong impact resistance, high efficiency of drawing. The polycrystalline diamond die on metal wire drawing industry began to be seen.
Compared with the hard alloy mould, has the following obvious advantages using polycrystalline diamond die wire drawing die:
1 drawing high efficiency. The surface quality of wire drawing die in the process of using the necessary maintenance of die service life and wire are very important, usually advised clients to conduct maintenance on the polycrystalline diamond drawing die every 24 hours. In 24 hours the aperture polycrystalline diamond drawing die of small changes, the drawn wire diameter change rate is very small. For the whole production process, each drawing die wire diameter compression rates are relatively stable, the ratio of inputs and outputs high.
2 good abrasion resistance, long life. Life of polycrystalline diamond drawing die is about 30~50 times of hard alloy die, so in the process of drawing is not to replace the mold often shut down. Polycrystal drawing die aperture in a unit of time changes very little, change in the size of a small wire drawing, which is very beneficial to the reel winding. In general the drawn wire winding number is fixed, if the size of wire products quickly become large, number of windings is relatively reduced rapidly, which requires changing the reel size, is not conducive to the improvement of production efficiency.
3 save raw materials. If the drawing surface coated with a metal wire, stop plating process in drawing process has not stopped, it causes are plated wire surface plating thickness exceed the standard, start drawing to cut off the wire thickness exceed the standard, resulting in enormous waste, more waste will be shut down. The use of polycrystalline diamond die can greatly reduce this waste.
4 to reduce the labor intensity. Because the lifetime of polycrystalline diamond drawing die long, expanding, slow, do not need to be replaced frequently die, nor with cemented carbide drawing die must always pay attention to the change of the wire size, greatly reducing the labor intensity of workers, a worker can give attention to both the 4~5 drawing machine in the production process.