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1. 发明授权

US4023390A Machine for use in hydrostatic extrusion 失效
标题翻译：用于静液压挤出机
公开(公告)号：US4023390A
公开(公告)日：1977-05-17
申请号：US637776
申请日：1975-12-04
申请人： Masao Nishihara , Yoshihiro Yamaguchi , Tomiharu Matsushita , Tatsuo Yamasaki , Masataka Noguchi , Kunihiko Nishioka
发明人： Masao Nishihara , Yoshihiro Yamaguchi , Tomiharu Matsushita , Tatsuo Yamasaki , Masataka Noguchi , Kunihiko Nishioka
IPC分类号： B21C23/00 , B21D22/10
CPC分类号： B21C23/007
摘要： A method and machine for use in hydrostatic extrusion wherein a portion of an elastic-plastic viscous pressure medium is introduced into the rear portion of a container, with the rear end thereof being sealed in a fluid tight fashion. The pressure medium being of such a nature that it has a high viscosity and cannot flow by itself. Subsequently, a billet is charged into the container and then a die is mounted in the container at the forward end thereof. The aforesaid pressure medium is caused to fill around the outer circumferential surface of the billet. In this respect, a high pressure seal is provided for the junctions between the die and the forward end of the container and between the die and the forward end of the billet before the pressure medium flows out of the container in a practically negligible small amount, immediately after which a pressure stem is pushed into the container from the rear end thereof, thus proceeding with the hydrostatic extrusion.
摘要翻译：一种用于静液压挤出的方法和机器，其中弹性塑料粘性压力介质的一部分被引入容器的后部，其后端以流体密封的方式密封。压力介质具有高粘度且不能自身流动的性质。随后，将坯料装入容器中，然后将模具安装在容器的前端。使上述压力介质填充在坯料的外周表面周围。在这方面，在压力介质以几乎可以忽略的少量流出容器之前，为模具和容器的前端之间以及模头和坯料的前端之间的接合部提供高压密封，之后立即将压力杆从其后端推入容器中，从而进行静液压挤压。

2. 发明授权

US4036043A Extrusion die for hot hydrostatic extrusion of aluminum and aluminum alloys 失效
标题翻译：用于铝和铝合金热静压挤出的挤出模具
公开(公告)号：US4036043A
公开(公告)日：1977-07-19
申请号：US623631
申请日：1975-10-20
申请人： Yoshihiro Yamaguchi , Tomiharu Matsushita , Masataka Noguchi , Hideaki Ide , Kunihiko Nishioka
发明人： Yoshihiro Yamaguchi , Tomiharu Matsushita , Masataka Noguchi , Hideaki Ide , Kunihiko Nishioka
IPC分类号： B21C23/00 , B21C25/02 , B21C3/10 , B21C9/00 , B21C23/32
CPC分类号： B21C25/02 , B21C23/007
摘要： A die for use in a hot hydrostatic extrusion process, in which a billet comprised of aluminum or an aluminum alloy or a billet having aluminum and an aluminum alloy at its outer periphery is preheated and charged into a container whereupon extrusion is carried out by means of a pressure medium, said die comprising a plurality of stepped conical portions serving as approach portions to the die outlet; said conical portions having conical surfaces whose opening angles increase from the inlet of the die toward the outlet thereof, said conical surface which is closest to said inlet having an opening angle of less than 60 degrees, and the difference between the opening angles between adjacent conical surfaces being less than 90 degrees.
摘要翻译：用于热流体静压挤出工艺的模具，其中由铝或铝合金组成的坯料或其外周边具有铝和铝合金的坯料被预热并装入容器中，由此通过压力介质，所述模具包括用作到模具出口的接近部分的多个阶梯形锥形部分; 所述锥形部分具有锥形表面，其开口角从模具的入口朝向其出口增加，最接近所述入口的锥形表面具有小于60度的开口角度，以及相邻锥形件之间的打开角度之间的差异表面小于90度。

3. 发明授权

US4445350A Extrusion method using hot lubricant 失效
标题翻译：挤出方法采用热润滑剂
公开(公告)号：US4445350A
公开(公告)日：1984-05-01
申请号：US325552
申请日：1981-11-27
申请人： Masao Nishihara , Tomiharu Matsushita , Masataka Noguchi , Kazuo Arimura , Akira Ohte , Tetsuo Kimura , Akira Iwai , Nobuo Hayashida
发明人： Masao Nishihara , Tomiharu Matsushita , Masataka Noguchi , Kazuo Arimura , Akira Ohte , Tetsuo Kimura , Akira Iwai , Nobuo Hayashida
IPC分类号： B21C23/32
CPC分类号： B21C23/32
摘要： There is disclosed a method for hot lubricated metal extrusion in which a billet is extruded into a solid or tubular form by means of a die and/or a mandrel with an organic lubricant interposed within a container, the method comprising feeding a combustion improver or a mixture of a combustion improver and water into an extruded product thereby burning off the carbide of the lubricant deposited on the surfaces of the extruded product.
摘要翻译：公开了一种用于热润滑的金属挤压的方法，其中通过模具和/或具有置于容器内的有机润滑剂的心轴将坯料挤出成固体或管状形式，该方法包括将燃烧改进剂或将燃烧改进剂和水的混合物混合到挤出产物中，从而烧掉沉积在挤出产品表面上的润滑剂的碳化物。

4. 再颁专利

USRE29344E Method and apparatus for manufacturing tubes or tubular bodies with inner walls having cross sections of irregular shapes 失效
标题翻译：用于制造具有具有不规则形状的横截面的内壁的管或管体的方法和装置
公开(公告)号：USRE29344E
公开(公告)日：1977-08-09
申请号：US684234
申请日：1976-05-07
申请人： Yoshihiro Yamaguchi , Tomiharu Matsushita , Masataka Noguchi , Junichi Nakagawa , Hakumi Hasegawa
发明人： Yoshihiro Yamaguchi , Tomiharu Matsushita , Masataka Noguchi , Junichi Nakagawa , Hakumi Hasegawa
IPC分类号： B21C23/08 , B21C23/10 , B21C25/00 , B21C25/04
CPC分类号： B21C25/00 , B21C23/085 , B21C23/10 , B21C25/04
摘要： There are disclosed herein a method and an apparatus for manufacturing tubes or tubular bodies by means of hydrostatic extrusion, which tubes or tubular bodies have axially running holes therethrough having cross-sections of irregular shapes. The method and apparatus utilize a mandrel of novel construction which comprises a conical tip portion having a smooth peripheral surface, a cut or grooved intermediate portion with a sloped groove starting at a peripheral edge and a body portion formed with a flange and adapted to move longitudinally of a pressure chamber, as necessary. The conical tip portion is specifically intended to seal against the conical end of a metallic billet. Unless there is such a provision, there would be leakage of a fluid through the grooved portion because of direct contact of the grooved edge with the inner end surface of the billet. Thus, this method and the apparatus for performing the method enables one-step extrusion of tubes or tubular bodies having inner fins or inner walls having irregularly shaped cross-sections, with the accompanying advantages of providing complete sealing among the die, the billet and the mandrel, particularly in the initial stage of the extrusion.

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