A kind of manufacturing method of long-fiber porous metal material

Abstract

The invention discloses a manufacturing method of a macrofiber porous metal material. The method comprises the following steps: firstly, metal macrofiber filaments are woven into a weaving body, the minimal feature size of the shape of the weaving body is 5 times larger than the maximum feature size of the cross sections of the metal macrofiber filaments, and when the cross sections of the metal macrofiber filaments are round, the minimal feature size of the shape of the weaving body is larger than 5 times of filament diameter; secondly, a metallurgical bonding process is performed on the weaving body, so as to enable the contact parts of the filaments to achieve metallurgical bonding and the non-contact parts of the wires to form pores, and the pores are distributed in the filament track direction; finally, the required macrofiber porous metal material can be manufactured and obtained. The macrofiber porous metal material manufactured by adopting the manufacturing method provided by the invention has continuous macrofiber, high wire mechanical property, high fatigue strength and anti-impact property, has the rigidity which is the same as that of a conventional volume material, and can be machined, as a common metal material, to be mechanical parts with bearing force and in constitutive structure shapes.

Description

technical field [0001] The invention relates to the technical field of manufacturing porous materials, in particular to a method for manufacturing long-fiber porous metal materials. Background technique [0002] When the casting mold is injected with molten metal, gaseous substances or air cannot be discharged from the casting mold, which will cause problems such as poor fluidity of the molten metal and formation of gas defects in the casting. During the plastic injection molding process, the air in the mold cavity, the gas precipitated from the polymer, and the water vapor volatilized from the plastic raw materials and mold release agent must be completely and completely removed. If the gas in the mold cavity cannot be removed smoothly, then It will cause surface quality defects such as dissatisfaction, welding marks, cracks, and black spots on the product. In order to avoid these problems, vent holes or exhaust systems are designed on the casting mold, plastic mold. Howe...

AI Technical Summary

Problems solved by technology

However, the disadvantages of metal powder sintered porous materials are: the material is discontinuous, the sintering interface between the powder and the powder is the weak link of the material, the material is brittle, the impact resistance is poor, the corrosion resistance is not good, the service life is short, the manufacturing process is complicated, and the cost is low. very high

However, the diameter of the wire is small and easy to bend and deform, and it does not have rigidity after being braided into a rope. It is still easy to bend and deform, and cannot be manufactured into structural parts.