Method for precisely manufacturing ultrathin-wall honeycomb ceramic carrier extrusion molding mold

Abstract

The invention belongs to the field of machining, and particularly relates to a method for precisely manufacturing an ultrathin-wall honeycomb ceramic carrier extrusion molding mold. The method comprises the following steps that firstly, the machining technology is used for manufacturing and machining a mold billet body to form the basis appearance of the extrusion molding mold, then the linear cutting technology is used for machining internal thin grooves of the mold, and the surfaces of the internal thin grooves are pre-ground by extruding pug out; the mold is immersed into a plating solution groove, the inner surface of the mold is plated with a protective coating, and the thickness of the coating is precisely controlled according to deposition time; finally, the mold is subjected to heat treatment under the protection of argon to form a nanocrystalline-noncrystalline composite microscopic structure; the extrusion molding mold which is high in size precision and hardness, abrasion resistant and corrosion resistant and has the self-lubricating property is obtained.

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to a method for precisely manufacturing an extrusion mold for an ultra-thin-walled honeycomb ceramic carrier. Background technique [0002] With the continuous improvement of the level of industrialization, the share of motor vehicle exhaust pollution in urban air pollution is getting higher and higher. Motor vehicle exhaust control technology has great social significance for energy saving and emission reduction. Catalyst-coated honeycomb ceramic substrate is one of the keys to the treatment of gasoline vehicle exhaust, and the particulate filter based on honeycomb ceramics is a key technology for the purification of diesel vehicle exhaust particulate matter. [0003] In recent years, global environmental regulations and standards have been upgraded, and the requirements for honeycomb ceramic carriers have also been continuously improved, requiring higher mesh numbers and thinn...

AI Technical Summary

Problems solved by technology

At present, machining and wire cutting are generally used as the main manufacturing technology of this kind of mold, but there are many problems in this method that make it difficult to produce ultra-thin-walled honeycomb ceramic substrates, such as the difficulty in controlling the size of the small inner grooves, which makes it difficult to extrude regular shapes and walls. Thick and precise ultra-thin-wall honeycomb ceramic carrier, poor wear resistance makes the dimensional accuracy drop sharply after repeated use, and is easy to corrode, so that severe corrosion will occur if it is not used for a long time, and the mold will be scrapped

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