TS cold diamond ring embedded with PCD drawing dies

First, the traditional belt loop core (also known as the mold core, mold blank) FAQ
current common band ring diamond Drawing core on the market, through the process of high temperature and pressure diamond powder, binder, and sintered carbide ring is a one-time drawing mandrel, which we call traditional belt loop drawing mandrel. Due to a variety of equipment and technology aspects of the traditional band ring mandrel often following problems:
1, individual product surface is hard and soft inside, that is, the appearance seems to be qualified, in fact, very bad inside. This problem is some of the domestic brands with a ring mold core product is common;
2, the internal destructive residual stress is too large, so that the core experience easily broken when an external force is not balanced. This problem is all domestic and foreign brands with a ring mold core products could be seen, it is very common with some of the domestic brands ring mold core. In order to improve the ability of resistance to fracture, Sumitomo Corporation of Japan launched a push into the type of belt loop drawing die blanks, WD960 (D33) and WD970 (D36);
3, due to the limited press of pressure and cost control reasons, traditional carbide ring mandrel with the outer diameter of reinforcing loop will often be limited to a smaller value, and thus can not provide sufficient radial support force and fracture resistance support force drawing die blanks. To solve this problem, conventional band ring mandrel often require metal powder pressing casement. During hot casement, the stress balance with drawing ring mandrel inside the unit may be destroyed, so that the core rupture. Further, if the heating temperature is too high or the heating time is too long, it will result PCD diamond graphitization, thereby reducing the life of the mold and brushed finish.
4, with the traditional diamond ring mold core material, only cobalt-containing PCD, its highest temperature is only 700 ℃, high temperature can not be used for drawing. Due to the high-speed compression zone drawing drawing die hole wall at a higher temperature, so the traditional belt loop core are generally not suitable for ultra high-speed drawing.

Second, our advantages of embedded belt loop drawing mandrel

Our embedded belt loop drawing mandrel, and Sumitomo Corporation of Japan's push-belt loop wire drawing die blanks WD960 (D33) and WD970 (D36) in principle is the same, the difference is manufacturing technology ideas and mold core specifications. Sumitomo There are two larger size D33 and D36, Division I mainly D15, D18, D21, D24, D27, D30, and some of the smaller size of the six kinds of special, customized special specifications.
Our embedded belt loop drawing mandrel has the following characteristics:
1, PCD sintered material is pressed in advance, through a variety of processing and testing to ensure high quality PCD diamond material, it is impossible traditional appeared with ring mandrel external dense and soft internal problems, fundamentally ruled out the presence of the diamond material loose structure, cracks, defects such as abnormal grain growth.
2, unique design taper easy to distinguish imports and outlet faces, can effectively achieve the protective effect of the close of PCD diamond alloy ring, so that at the time of drawing can withstand greater impact.
3, due to the larger diameter size alloy ring, may provide sufficient radial support force and drawing resistance of PCD diamond, and therefore no longer need external casement metal powder sintering hot pressing, but only with an interference fit approach to "cold casement" button. This feature allows the drawing mandrel to avoid any heat damage casement process to ensure PCD diamond inlay and quality will not change.
4, because the use of embedded inlay way ring, diamond material can be used not only PCD cobalt binder. Can also be de-cobalt PCD temperature, high temperature resistant silicone binding agent PCD, CVD diamond, or the like. With high temperature diamond core (also known as the mold core, mold blank), can be applied to high-temperature and high-speed wire drawing drawing.