How to Select the Grade of Cemented Carbide Wire Drawing Dies
Jul 6th,20201310 Views
With the rapid development of China's industrial production, the quantity and quality of the wire made increasing demands. Cemented carbide wire drawing die is a key tool to make wire. Its level of quality directly affect steel quality, die losses, energy consumption and products of economic benefits. Cemented carbide wire drawing dies are made of cemented carbide. Tungsten carbide cobalt alloy belong, whose main component is tungsten carbide and cobalt. Tungsten carbide is an alloy of the "skeleton", the main role played hard wear, Cobalt is bonded metal, is the source of the alloy toughness. Therefore, cemented carbide wire drawing dies and alloy die compared with the following characteristics: high abrasion resistance, polishing, good adhesion of small, low friction, low energy consumption, high corrosion resistance, these features make the cemented carbide wire drawing dies have a wide range of processing adaptability, become the most widely used cemented carbide wire drawing die.
Cemented carbide wire drawing dies are made by the die core and die sets two parts, cemented carbide wire drawing die core usually select tungsten carbide cobalt.
1. YG3X (WC: 97%, Co: 3%): it is a tungsten-cobalt alloy which has a lowest strength, maximum hardness, wear the best, but the toughness of the worst. Hardness is not less than 92HRC, appropriate specifications do pull thin wire (0.6mm or less optimal) diameter of 20mm non-ferrous metal and cemented carbide wire drawing dies.
2. YG3 (C: 97%, Co: 3%): its hardness and wear resistance is slightly inferior to YC3X, but the toughness is slightly higher. Hardness is not less than 91HRC specifications suitable to do the fine wire (1.6mm or less is best) and non-ferrous metals, cemented carbide wire drawing dies.
3. YG6 (C: 94%, Co: 6%): high wear resistance, strength and toughness are good. Hardness is not less than 89.5HRC, suitable as a variety of non-ferrous metal or wire, bar drawing dies.
4. YG6X: strength is more than 1800MPa, the hardness is not less than 91.5HRA, suitable for making drawing bore diameter of less than 6.00mm wire drawing dies.
5. YG8 (WC: 92%, Co: 8%):its toughness and shock resistance is higher than YG6 , but the wear resistance and hardness worser than YG6, hardness is not less than 89HRC, suitable as bar, tube drawing dies (50mm or less in diameter hit).
6. YG10: strength is more than 2400MPa, the hardness of not less than 88.5HRA, for the production of drawn steel and non-ferrous metal rod and tube drawing dies.
7. YG15: strength is more than 2800MPa, the hardness is not less than 87HRA, for the production of high shrinkage of drawn steel bars and tubes.
In the standard cemented carbide cold heading process, cemented carbide cold heading die need to withstand greater shock, in order to meet the requirements, you must use the tungsten carbide with a higher amount of cobalt-containing, high strength and good toughness. Such as YG15, YG20, YG20C.
