The core of the diamond wire drawing tool is the wire drawing dies core. It can be classified according to the material into three types: single-crystal, CVD, and PCD core. The wire drawing tools containing PCD core are called For PCD drawing dens.
What are the different types of wire drawing cores?
PCD mold core: With the successful development of PCD, the PCD wire drawing dies industry has seen significant improvements. The entire process is now more efficient and stable. By sintering micron-sized particles of diamond and binders in high-temperature and high-pressure conditions, PCD can be made. It is very hard and resistant to wear. It has long-lasting durability and uniform wear. This mold is ideal for high-speed drawing. It is macroscopically inotropic so it won't have die hole wear or out-of-round holes like single-crystal diamonds. It is also much cheaper than single-crystal diamonds, so it has been used extensively in wire drawing. The majority of diamond wire drawing tools use PCD cores for wire drawing.
CVD diamond core: A CVD diamond (also known as chemical-vapor deposition diamond) is a pure diamond that has been deposited on a substrate with carbon-containing gases under high temperatures and low pressure conditions. CVD diamond is hard and durable, with a low friction coefficient and good wear resistance. It can be used to make wire drawing tools with an aperture of 0.02-1.0mm for drawing stainless steel, tungsten, molybdenum, copper, and aluminum wire. CVD diamond wire drawings dies have a higher wear resistance, corrosion resistance and thermal conductivity than PCD. This product has a few drawbacks. It is less tough than PCD, its impact resistance and cracking ability are weaker, and the wire drawing die preparation is more strict than PCD.
One crystal diamond core: A single crystal diamond has the characteristics for high hardness and excellent wear resistance. This mold produces pcd dies with a high finish. However, the wire's hardness is anisotropic due to its anisotropy structure. If the die hole is worn unevenly, the product will not be round. The price is high, so it is generally used for fine wire drawing or wire drawing dies with very high quality surface requirements. There are two types single-crystal diamond wire draw cores available: artificial single crystal diamond cores and natural diamond wire draws cores. Imports are the main source of man-made single-crystal diamond wire drawing cores. Element Six, Sumitomo of Japan and Langfang Sipor Company are some of the prominent manufacturers.
What are the different types of PCD cores?
Different bonding agents can help you distinguish between two types of PCD cores: silicon-based and cobalt-based.
The core of the cobalt-based PCD has a metal bond, and is very machine able. It can be used for processing by ultrasonic, laser, and electric spark. Diamond is difficult to graphitize at high temperatures due to the presence of metal cobalt. This type of mold can be used for processing under conditions below 650° Celsius. Get more info, Visit here: www.szwiredie.com
Although the PCD core of silicon-based PCD is not very workable, there is no metal bond, so the material can still be stable at temperatures up to 1000 degrees Celsius.
S&Z Wire Die Co., Ltd provides durable dies and tools for Wire and Cable Industrial applications. Our mission is to be a global supplier for wire drawing tools and tooling for wire and cable industries while providing dies and tools with the highest quality and shortest lead times.