公开(公告)号：US06579628B2

公开(公告)日：2003-06-17

申请号：US09877085

申请日：2001-06-11

申请人： Yuko Takeuchi ,  Yoshihisa Kato ,  Noriyoshi Yokota ,  Seiya Asari ,  Masaki Tsuchiya ,  Takao Shimizu ,  Isao Tanaka

发明人： Yuko Takeuchi ,  Yoshihisa Kato ,  Noriyoshi Yokota ,  Seiya Asari ,  Masaki Tsuchiya ,  Takao Shimizu ,  Isao Tanaka

IPC分类号： F16L902

CPC分类号： F28F19/06 ,  B23K35/304 ,  B23K35/32 ,  C10G9/16 ,  C10G9/203 ,  F28D2021/0059 ,  Y10T428/12493 ,  Y10T428/12854 ,  Y10T428/12937

摘要： The multi-layered heat resistant metal tube is disclosed. This tube has excellent anti-coking characteristics and is suitable for use under the conditions where carbon tends to deposit and accumulate thereon due to contacting with hydrocarbons at a high temperature. The tube is made by forming weld-mounted overlaid layer of Cr—Ni alloy by building-up welding over the inner surface and/or the outer surface of a substrate tube made of a heat resistant metal. The Cr—Ni alloy comprises 35% by weight or more of Cr and satisfies the relationship: Ni(w%)≧0.5Cr(wt %). Building-up welding is preferably carried out by PPW (Plasma Powder Welding) in which the filler metal is supplied in the form of powder.

公开(公告)号：US6007923A

公开(公告)日：1999-12-28

申请号：US659720

申请日：1996-06-06

申请人： Takao Shimizu ,  Seiya Asari ,  Noriyoshi Yokota

发明人： Takao Shimizu ,  Seiya Asari ,  Noriyoshi Yokota

IPC分类号： B23K35/00 ,  B23K35/32 ,  C22C14/00

CPC分类号： C22C14/00 ,  B23K35/005 ,  B23K35/325 ,  Y10T428/12292 ,  Y10T428/12806

摘要： A joined tubular body comprises a titanium alloy pipe of which crystal grain is hard to coarsen at the time of welding or hot-extruding, which consists by weight percentage of at least one element selected from 0.01.about.10% of S, 0.01.about.10% of Se and 0.01.about.10% of Te (the total sum does not exceed 10%), one or both of 0.01.about.10% REM and 0.01.about.10% of Ca (the total sum does not exceed 10%), and the above pipe is joined to a titanium alloy pipe consisting of the above elements and also at least one element selected from Al.ltoreq.10%, V.ltoreq.25%, Sn.ltoreq.15%, Co.ltoreq.10%, Cu.ltoreq.10%, Ta.ltoreq.15%, Mn.ltoreq.10%, Hf.ltoreq.10%, W.ltoreq.10%, Si.ltoreq.0.5%, Nb.ltoreq.20%, Zr.ltoreq.10%, Mo.ltoreq.15%, and 0.ltoreq.0.1% (the total sum does not exceed 30%).

摘要翻译： 连接的管体包括在焊接或热挤压时晶粒难以粗化的钛合金管，该重量百分比由选自0.01％S，0.01％，10％，10％ 的Se和0.01差异Te的10％（总和不超过10％），0.01差异10％REM和0.01差异中的一种或两种，10％的Ca（总和不超过10％），以上 管连接到由上述元素组成的钛合金管中，并且还选自Al 10％，V 25％，Sn 15％，Co 10％，Cu 15％，Ta <15％，Mn <10％，Hf = 10％，W = 10％，Si≤0.5％，Nb≤20％ / = 10％，Mo <15％，0 <= 0.1％（总和不超过30％）。