Tubeless Tire Repair Nail Metal Injection Molding Parts

Threaded anti-skid nails range from standard threaded anti-skid nails to large threaded anti-skid nails to racing threaded anti-skid nails.

Anti-skid shoes are commonly used in the 6.5-1 series, JX100, JX110, JX300A, JX300B, etc.

Tires are commonly used in the 8-1 series, 9-1 series, 12-1 series, 8-11-2 series, 9-11-2 series, etc.

Racing cars, ice and snow drift races are commonly used in anti-skid nails 6-20, 6-25, 6-27, etc., all steel and tungsten steel nail cores are available!

Technical solution, the above lubricant has good thermal stability and good lubrication effect during ball milling.

Preferably, the antioxidant is one or a mixture of at least two of antioxidant 1010, dibutyl hydroxytoluene, and antioxidant DLTP.

By adopting the above technical solution, the above antioxidant has good compatibility with POM, PP, HDPE, and lubricant, so that the stability of the binder is higher, thereby making the mass production stability of tungsten alloy feed better.

Preferably, the weight ratio of POM, PP, HDPE, lubricant, and antioxidant in the binder is (75-90): (4-10): (4-15): (0.5-5): (0.1-1).

By adopting the above technical solution, by controlling the ratio of each raw material in the binder, the cross-linking effect of the binder and the modifier can be better, and the thermal stability of the binder can be better.

Preferably, the particle size of the tungsten powder is 0.1-30μm, and the particle size of the auxiliary powder is 0.1-38μm.

By adopting the above technical solution, controlling the particle size of the raw materials can make the dispersibility of each raw material better, and the appropriate particle size ratio can make the rheological properties and mechanical properties of the alloy mixed powder better.

Preferably, in the preparation method of the surface-modified tungsten alloy mixed powder, the ball-to-material ratio during ball milling is 1:(0.5-2), and the ball milling time is 2-8h.

By adopting the above technical solution, by controlling the ball milling time and the ball-to-material ratio, the coating of the modifier on the tungsten alloy mixed powder can be made more uniform, thereby improving the dispersion effect of the modifier on the tungsten alloy mixed powder, making the banburying uniformity better, thereby improving the mass production stability of the tungsten alloy feed.

In the second aspect, the present application provides a method for preparing tungsten alloy feed for MIM, adopting the following technical solution: a method for preparing tungsten alloy feed for MIM, banburying the surface-modified tungsten alloy mixed powder with a binder, and then extruding to obtain the tungsten alloy feed for MIM.

By adopting the above technical solution, the tungsten alloy mixed powder has a better dispersion effect in the binder after modification, preventing agglomeration during banburying, and the stability of the binder is better, so that the mass production stability of the tungsten alloy feed is higher.

Preferably, the specific steps of the banburying are: preheating the surface modified tungsten alloy mixed powder for 5-10 minutes, then adding PP, HDPE, lubricant and antioxidant for banburying, and finally adding POM for banburying after they are completely melted and evenly coated on the powder surface. The temperature during the banburying is 180-200°C.

By adopting the above technical solution, the binder other than POM is wrapped on the surface of the tungsten alloy powder to form a coating layer, and then adding POM can reduce the decomposition of POM, further improve the stability of the binder, and thus further improve the mass production stability of the tungsten alloy feed.

MIM is the abbreviation of Metal Injection Molding, which is a near-net-shape molding technology that injects metal powder into a mold after mixing and kneading with a binder. Zhongwei Precision MIM Project was established in 2003, mainly engaged in the research and development and production of tungsten alloy MIM and titanium alloy MIM. As the project continues to grow and develop, production lines for metals such as stainless steel have been added. At present, the project has MIM and processing platforms and production lines for tungsten alloy, stainless steel, iron-based alloy, copper alloy, soft magnetic material, non-magnetic steel and other materials, and has sintering equipment such as atmosphere-protected push plate furnace and vacuum furnace, with a monthly production capacity of more than 50 million pieces.