Method of manufacturing porous metal mold for wet pulp molding process

Abstract

A method of manufacturing a porous metal mold for a wet pulp molding process is disclosed herein. The method comprises the steps of (1) preparing a porous metal mold, an outer surface of which and a pore form a plurality of exposed pores, wherein the outer surface comprises a machining area and a non-machining area; (2) forming a solidified resin layer on the outer surface of the porous metal mold and the pore to shield and protect the plurality of pores distributed in the non-machining area; (3) machining the machining area of the porous metal mold; (4) removing the solidified resin layer on the surface of the porous metal mold to expose the plurality of pores; and (5) delicately polishing and machining the outer surface of the porous metal mold.

Description

【Technical field】 [0001] The invention relates to a method for manufacturing a porous metal mold used in a wet paper-plastic forming process, in particular to a porous metal sintered mold made by powder metallurgy technology. 【Background technique】 [0002] In recent years, due to the rising awareness of environmental protection, paper-plastic packaging materials / products have been widely used in various products such as electronic devices and food containers. In the pulping step and pressure molding step of the general wet paper and plastic product manufacturing process, a set of mold components such as the upper module and the lower module must be used to complete the forming and setting of the paper and plastic product. The above-mentioned mold components mostly use traditional aluminum casting molds, and a layer of metal braiding is added on a molding surface of the aluminum casting mold. When the slurry tank for pulp fibers is used to scoop out pulp fibers, the pulp fi...

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Problems solved by technology

In order to avoid the difficulty of further processing the mold structure after overall processing to form the above-mentioned ventilation holes, the mold after casting must first be mechanically punched to drill several ventilation holes on the outer surface of each side of the mold, which is extremely difficult. Time-consuming and labor-intensive, and restricted by the limited hole spacing of mechanical drilling, only low-density distribution of ventilation holes can be formed, and then the entire mold is mechanically processed (such as cutting or grinding) to form the final required mold shape structure, which makes the development risk of the mold larger; in addition, in the process of cutting or grinding the mold, the cutting or grinding material is very easy to block the ventilation holes, and it is difficult to remove them one by one manually

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