Metal Injection Molding 9-13-1 Tungsten Carbide Nail For Automobile Tire 13#

Hot degreasing is the most difficult and important step in PIM. Incorrect degreasing process and degreasing parameters during degreasing lead to deformation, cracking, stress and gas inclusion, which makes the product shrink inconsistently. Degreasing is also very important for subsequent sintering. The cracks and deformations generated during the degreasing process cannot be compensated by sintering, which is harmful to the densification and performance of the alloy. If the hot degreasing temperature is too high, it is easy to produce carburization, which has a great influence on the performance of tungsten alloy. Therefore, the correctness of the degreasing process selection will have a great influence on the internal defects of the sample and the performance of the alloy. Because the PIM feed contains a large amount of binder, the strength of the blank after degreasing is extremely low, and it is almost a loose powder aggregate. Therefore, it shrinks greatly during the sintering process and is prone to collapse, deformation and bending. Especially for high-density tungsten alloys sintered in liquid phase, the sintering temperature required to achieve full densification is high, the amount of liquid phase is large, the sintering time is long, and the density of tungsten phase and liquid phase is very different. During the liquid phase sintering process, under the action of gravity, the W particles are rearranged due to the viscous flow of the liquid phase, and the collapse and deformation are more serious, which seriously affects the uniformity of the organization, the control of the performance and dimensional accuracy of the tungsten alloy, and limits the near-net-shape forming of complex parts. Therefore, in the entire injection molding technology, how to control the deformation of the liquid phase sintering process is the key problem to be solved in PIM. Reducing the sintering temperature and promoting sintering densification can control the deformation during the liquid phase sintering process.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was established in 1997. The company's strategic goal is to build a large cemented carbide group enterprise. Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a one-stop cemented carbide production and customization service provider. Focusing on the research and development and production of high-end carbide ball gears, round bars, plates, mold materials, wear-resistant alloy materials, and anti-skid spikes for automobile tires, as well as supporting carbide precision parts, bearings, bushings, valve parts, and automated crushing system processing, Zhongwei Precision Company has won the favor of customers with its stable product quality and rich product variety through years of development. Since the establishment of the Foreign Trade Department in 2010, the company's products have been sold far and wide at home and abroad, and the company's brand has a certain market reputation.