US 12,076,934 B2
Manufacturing method for fluid control apparatus
Hiroyuki Murase, Komaki (JP); and Atsushi Tsuneduka, Komaki (JP)
Assigned to CKD CORPORATION, Komaki (JP)
Appl. No. 17/605,488
Filed by CKD CORPORATION, Komaki (JP)
PCT Filed May 28, 2020, PCT No. PCT/JP2020/021071
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2020/246359, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 2019-105707 (JP), filed on Jun. 5, 2019.
Prior Publication US 2022/0194015 A1, Jun. 23, 2022
Int. Cl. B29C 65/00 (2006.01); B29C 65/16 (2006.01); B29C 65/02 (2006.01); B29C 65/14 (2006.01); B29L 31/00 (2006.01); F16K 1/36 (2006.01); F16K 1/42 (2006.01); F16K 31/122 (2006.01)
CPC B29C 65/1612 (2013.01) [B29C 66/81267 (2013.01); B29C 65/00 (2013.01); B29C 65/02 (2013.01); B29C 65/14 (2013.01); B29C 65/1412 (2013.01); B29C 65/1448 (2013.01); B29L 2031/7506 (2013.01); F16K 1/36 (2013.01); F16K 1/42 (2013.01); F16K 31/122 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A manufacturing method for a fluid control apparatus that controls flow of a fluid by bringing a valve element into or out of contact with a valve seat, wherein
(i) the valve element is a joint body that is a combination of (a) a seat member to be in contact with the valve seat and (b) a body member, or (ii) the valve seat is a joint body that is a combination of (a) a seat member to be in contact with the valve element and (b) a body member,
the joint body is formed by machining a material joint body that is formed by welding together a seat-member material as a material for the seat member and a body-member material as a material for the body member, and
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.