Processing method and equipment for silicon carbide DPF (diesel particulate filter)

Abstract

The invention discloses a silicon carbide DPF machining method and equipment, and belongs to the technical field of DPF machining. The method comprises the steps that S1, a plurality of silicon carbide DPF blanks are vertically arranged, and the to-be-machined end faces of all the blanks are located in a first plane area; s2, the first plane area is covered with an adhesive tape, and the edge of the adhesive tape extends outwards and is laid into an extension area; and S3, the adhesive tape above the blank is punched, blocked and cured, and then the adhesive tape is removed. Specifically, a tool clamp mainly comprising a supporting base, a mold frame, a locking device and a supporting block is adopted to achieve the step S1 and the step S2. It can be seen that multiple silicon carbide DPF blanks can be machined at the same time, efficiency is high, pasty materials for hole blocking can be prevented from entering partition honeycomb holes, the pasty materials for hole blocking are difficult to pollute the outer side walls of the blanks, the outer side walls do not need to be protected through adhesive pasting, and the problem that the outer side wall skins of the blanks are damaged due to adhesive tearing can be avoided.

Description

technical field [0001] The invention belongs to the field of workpiece clamping devices or positioning devices, and in particular relates to a processing method and equipment for a silicon carbide DPF. Background technique [0002] At present, the production of silicon carbide DPF (full name Diesel Particulate Filter, diesel particulate filter) first uses a single strip-shaped silicon carbide honeycomb ceramic blank, first loads its two ends and the outer wall with tape, and then tapes the end face. , mud plugging, mud curing, etc., and then tear off the tape. This production method has the following problems: (1) Processing one silicon carbide DPF billet at a time has low production efficiency, such as mass production, which requires a lot of manpower and management costs. (2) The tape should not only stick to the end face tightly to prevent the mud from entering the next-door hole during extrusion, but also protect the outer wall of the silicon carbide honeycomb ceramic f...

AI Technical Summary

Problems solved by technology

This production method has the following problems: (1) Processing one silicon carbide DPF billet at a time, the production efficiency is low, such as mass production, it needs to invest a lot of manpower and management costs

(2) The tape should not only stick to the end face tightly to prevent the mud from entering the next-door hole during extrusion, but also protect the outer wall of the silicon carbide honeycomb ceramic from being polluted by the mud used for plugging the hole when the mud is squeezed. , the requirements for adhesive tape are high, the operation is difficult, and the product quality is easily affected due to insufficient adhesive tape

(3) In addition, when the mud material enters the channel when the hole is blocked, the water is absorbed by the hole wall, causing the strength of the silicon carbide DPF billet close to the end face to decrease. Therefore, when the tape is torn off, the skin of the fragile outer wall is glued away by the tape and broken. , resulting in product damage, the current rate of such damage exceeds 30%, affecting production efficiency

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