公开(公告)号：US06386012B2

公开(公告)日：2002-05-14

申请号：US09899947

申请日：2001-07-09

申请人： Tadahiro Minamidate ,  Yoshiyuki Kajiura

发明人： Tadahiro Minamidate ,  Yoshiyuki Kajiura

IPC分类号： B21D1506

CPC分类号： B21D15/06 ,  B21D51/12

摘要： In order to produce a metal bellows of a length of “Ls” for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a length of “L” that is longer than the length “Ls”. Then, the blank is axially compressed by a length of “a”, so that the compressed blank has a length of “L−a” that is shorter than the length “Ls”. Then, the compressed blank is axially expanded so that the expanded blank has a length of “L−a+b” that is longer than the length “Ls”. Then, the force that has been applied to the blank is removed, and then the treated blank is left in room temperature until the time when the treated blank becomes to have the length of “Ls” due to the spring-back phenomenon.

摘要翻译： 为了制造长度为“Ls”的金属波纹管，用于加热的气氛中，进行以下步骤。 首先，制备波纹管的坯料，其是在其周围形成有多个凸起的金属管。 坯料的长度“L”长于长度“Ls”。 然后，坯料被轴向压缩一段长度“a”，使得压缩坯料的长度“L-a”比长度“Ls”短。 然后，压缩坯料被轴向膨胀，使得膨胀坯料的长度“L-a + b”长于长度“Ls”。 然后，将已经施加到坯料上的力去除，然后将经处理的坯料放置在室温下，直到处理后的坯料由于弹回现象而变为“Ls”的长度。

公开(公告)号：US06282939B1

公开(公告)日：2001-09-04

申请号：US09314167

申请日：1999-05-19

申请人： Tadahiro Minamidate ,  Yoshiyuki Kajiura

发明人： Tadahiro Minamidate ,  Yoshiyuki Kajiura

IPC分类号： B21D1506

CPC分类号： B21D15/06 ,  B21D51/12

摘要： In order to produce a metal bellows of a length of “Ls” for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a length of “L” that is longer than the length “Ls”. Then, the blank is axially compressed by a length of “a”, so that the compressed blank has a length of “L−a” that is shorter than the length “Ls”. Then, the compressed blank is axially expanded so that the expanded blank has a length of “L−a+b” that is longer than the length “Ls”. Then, the force that has been applied to the blank is removed, and then the treated blank is left in room temperature until the time when the treated blank becomes to have the length of “Ls” due to the spring-back phenomenon.

摘要翻译： 为了制造长度为“Ls”的金属波纹管，用于加热的气氛中，进行以下步骤。 首先，制备波纹管的坯料，其是在其周围形成有多个凸起的金属管。 坯料的长度“L”长于长度“Ls”。 然后，坯料被轴向压缩一段长度“a”，使得压缩坯料的长度“L-a”比长度“Ls”短。 然后，压缩坯料被轴向膨胀，使得膨胀坯料的长度“L-a + b”长于长度“Ls”。 然后，将已经施加到坯料上的力去除，然后将经处理的坯料放置在室温下，直到处理后的坯料由于弹回现象而变为“Ls”的长度。