MIM manufacturing process of 17-4 PH linear multiple-cavity reactive fragment shell

Abstract

The invention provides a MIM manufacturing process of a 17-4 PH linear multiple-cavity reactive fragment shell. The manufacturing process comprises the following steps that (1) gas atomization and water atomization 17-4 PH stainless steel powder are uniformly mixed to form 17-4 PH stainless steel powder; (2), 17-4 PH stainless steel powder and a binding agent are mixed according to the mass ratioof 11-13 : 1 and are mixed and granulated to obtain an injection feeding material; (3), the injection feeding material is heated, the flow state injection feeding material is injected into a mold forcooling and molding to obtain a blank body; (4), the blank body is placed in a degreasing tank to carry out solvent degreasing; and (5), the blank body after degreasing is carried into a vacuum furnace to carry out thermal degreasing and sintering in a protective atmosphere, and the 17-4 PH linear multiple-cavity reactive fragment shell prepared. The MIM manufacturing process of the 17-4 PH linearmultiple-cavity reactive fragment shell is reasonable in process, easy to control, low in cost and high in product density.

Description

technical field [0001] The invention relates to the technical field of metal injection molding, in particular to a MIM manufacturing process of a 17-4PH linear multi-cavity energetic fragment casing. Background technique [0002] Energetic fragments (also known as reaction fragments) are prefabricated fragments that contain chemical energy and can release energy during the impact process. The energy of the collision shock wave is used to trigger the chemical reaction of the energetic material itself. The energy released by the chemical reaction and the energy of the shock wave Superimposed on the explosives in the shielding shell, triggering its explosion damage effect. Single monolithic energetic fragments are made of energetic materials with high strength, good toughness, and high density by molding or sintering. Low, it is prone to breakage during the driving loading process. If metal is used as the shell and energetic substances are filled inside the shell, the occurre...

AI Technical Summary

Problems solved by technology

[0004] However, in the traditional metal injection molding practice, due to the unreasonable setting of process parameters, the product is prone to injection defects, degreasing defects, low mechanical strength of sintered products, poor dimensional accuracy, waste of resources, etc., and it is difficult to form thin walls. Parts will not only reduce the yield, but also cause some unnecessary waste of resources. Therefore, it is necessary to optimize the metal injection molding process