MANUFACTURING METHOD OF GAS SENSOR ELEMENT
To provide a manufacturing method of gas sensor element, capable of suppressing damage of a gas sensor element to reliably form a porous protective layer with uniform thickness.SOLUTION: The manufacturing method of gas sensor element forms, to a plate-like or cylindrical gas sensor element 100 exten...
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Main Author | |
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Format | Patent |
Language | English Japanese |
Published |
16.05.2019
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Subjects | |
Online Access | Get full text |
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Summary: | To provide a manufacturing method of gas sensor element, capable of suppressing damage of a gas sensor element to reliably form a porous protective layer with uniform thickness.SOLUTION: The manufacturing method of gas sensor element forms, to a plate-like or cylindrical gas sensor element 100 extending in an axial O-direction and including at a tip thereof a detection part 10 for detecting specific gas component contained in measurement target gas, a porous protective layer 20 around the detection part. The method includes: a holding process for holding the gas sensor element with a holding jig 210 so as to expose the detection part; an insertion process for inserting the gas sensor element held by the holding jig into a cavity of a rubber mould 204, in a state where at least part of the holding jig is stored in the rubber mould and the holding jig is moveable with respect to the rubber mould; and a porous protective layer formation process for placing raw material powder 20x of the porous protective layer into the cavity, press moulding it and forming the porous protective layer.SELECTED DRAWING: Figure 5
【課題】ガスセンサ素子の破損を抑制して均一な厚みの多孔質保護層を確実に形成することができるガスセンサ素子の製造方法を提供する。【解決手段】軸線O方向に延び、自身の先端側に被測定ガス中の特定ガス成分を検出するための検出部10を有する板状又は筒状のガスセンサ素子100に対し、該検出部の周囲に多孔質保護層20を形成するガスセンサ素子の製造方法において、検出部が露出するようにガスセンサ素子を保持具210に保持する保持工程と、保持具に保持されたガスセンサ素子を、ラバーモールド204のキャビティ内に挿入し、その際に保持具の少なくとも一部がラバーモールド内に収容され、保持具がラバーモールドに対して可動するように配置する挿入工程と、多孔質保護層の原料粉末20xをキャビティ内に投入し、プレス成形して多孔質保護層を形成する多孔質保護層形成工程と、を有する。【選択図】図5 |
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Bibliography: | Application Number: JP20170201572 |