公开(公告)号：US12076934B2

公开(公告)日：2024-09-03

申请号：US17605488

申请日：2020-05-28

Applicant: CKD CORPORATION

Inventor： Hiroyuki Murase ,  Atsushi Tsuneduka

IPC: B29C65/00 ,  B29C65/16 ,  B29C65/02 ,  B29C65/14 ,  B29L31/00 ,  F16K1/36 ,  F16K1/42 ,  F16K31/122

CPC classification number: B29C65/1612 ,  B29C66/81267 ,  B29C65/00 ,  B29C65/02 ,  B29C65/14 ,  B29C65/1412 ,  B29C65/1448 ,  B29L2031/7506 ,  F16K1/36 ,  F16K1/42 ,  F16K31/122

Abstract: A manufacturing method is provided for a fluid control apparatus, in which the flow of a fluid is controlled by bringing a diaphragm valve element into contact with or separating the diaphragm valve element from a valve seat. The diaphragm valve element may be a joint body that is a combination of (a) a seat member that makes contact with the valve seat and (b) a body member. The joint body is formed by machining a material joint body obtained by welding together a seat-member material which is a material for the seat member and a body member material which is a material for the body member. The welding is performed on contact faces of the seat-member material and the body-member material of the material joint body in a range wider than contact faces of the seat member and the body member of the joint body.