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

A honeycomb ceramic carrier and extrusion molding technology, applied in the field of mechanical processing, can solve the problems of difficult extrusion, regular shape, easy corrosion, and scrapping.

Inactive Publication Date: 2014-04-09
UNIV OF SCI & TECH BEIJING
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  • Abstract
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  • Claims
  • Application Information

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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 ma

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

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Embodiment Construction

[0017] First, the machining technology is used to manufacture the mold steel body into the basic shape of the extrusion mold (such as figure 1 shown), and then use the wire cutting process to process the fine grooves inside the mold, and strictly control the width of the grooves. Afterwards, the preliminarily made mold is installed on the extrusion equipment, and 20kg of ceramic mud is extruded, and the surface of the inner tank is pre-ground, and then the mold is removed, and the mold is immersed in the plating solution tank (such as figure 2 shown), the main components of the plating solution are: nickel sulfate 18g / L, sodium hypophosphite 35g / L, copper sulfate 5g / L, cobalt sulfate 5g / L, sodium tungstate 2g / L, citric acid 0.3mol / L , sodium silicate 13g / L, acetic acid 2g / L. Control the pH of the plating solution to 2 and the temperature at 65°C, control the circulation of the plating solution in the solution tank through an external mechanical pump, and apply ultrasonic vib...

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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...

Claims

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Application Information

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IPC IPC(8): B28B3/26B28B3/20C23C18/48
CPCB23P15/243C23C18/48
Inventor 乔利杰王秋阳白洋曹江利周庆军
Owner UNIV OF SCI & TECH BEIJING
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