公开(公告)号：US5329981A

公开(公告)日：1994-07-19

申请号：US133282

申请日：1993-10-07

申请人： Masahito Ito ,  Miyuki Koujiya ,  Hiroshi Sarai ,  Seiya Nakao ,  Takao Nomura ,  Satoru Kitou ,  Fuminori Matsuda ,  Susumu Yamada ,  Kesato Kuroiwa ,  Hiroshi Mihara

发明人： Masahito Ito ,  Miyuki Koujiya ,  Hiroshi Sarai ,  Seiya Nakao ,  Takao Nomura ,  Satoru Kitou ,  Fuminori Matsuda ,  Susumu Yamada ,  Kesato Kuroiwa ,  Hiroshi Mihara

IPC分类号： B22C9/06 ,  B22D18/04 ,  B22D18/00 ,  B22D18/06

CPC分类号： B22C9/06 ,  B22D18/04

摘要： A method of producing a metal mold is disclosed. A heat resistant sheet is forcedly brought into close contact with a product configuration surface of a matrix such as a wooden pattern, a resin model, or the like by making use of negative pressure. The matrix is brought into contact with a melt of a low melting-point alloy while that state of close contact is being maintained and the melt is allowed to cool as it is, thereby casting one part of the mold which makes up a pair. The matrix is then removed, and by using the one part of the mold thus cast as a new matrix, this new matrix is brought into contact with the melt of a low melting-point alloy via the heat resistant rubber sheet and is allowed to cool as it is, thereby casting a counterpart of the mold that makes up the pair.

摘要翻译： 公开了一种生产金属模具的方法。 通过利用负压将耐热片强制地与诸如木制图案，树脂模型等的基体的产品配置表面紧密接触。 使基质与低熔点合金的熔体接触，同时保持紧密接触的状态并使熔体原样冷却，从而铸造一部分成对的模具。 然后除去基质，通过使用如此浇铸的模具的一部分作为新的基体，通过耐热橡胶片将该新基体与低熔点合金的熔体接触，并使其冷却 从而铸造出配对的模具的对应物。

公开(公告)号：US5783794A

公开(公告)日：1998-07-21

申请号：US908128

申请日：1997-08-11

申请人： Hatsuhiko Oikawa ,  Yasuo Takahashi ,  Tohru Saito ,  Yutaka Okuda ,  Kazuo Narita ,  Fuminori Matsuda ,  Katsutoshi Ueno ,  Goro Watanabe

发明人： Hatsuhiko Oikawa ,  Yasuo Takahashi ,  Tohru Saito ,  Yutaka Okuda ,  Kazuo Narita ,  Fuminori Matsuda ,  Katsutoshi Ueno ,  Goro Watanabe

IPC分类号： B23K11/11 ,  B23K11/20 ,  B23K11/14

CPC分类号： B23K11/115 ,  B23K11/20 ,  B23K2203/04 ,  B23K2203/10 ,  B23K2203/20

摘要： The present invention relates to a resistance welding method suitable for use in spot welding between a steel-base metal sheet, which has been plated for rust prevention purposes, and an aluminum-base metal sheet and aims to permit a current to flow at a high density across the plated steel sheet and the aluminum-clad steel sheet, thereby realizing high-quality welding. An aluminum-clad steel sheet comprised of a steel layer having projections and an aluminum layer is interposed between the plated steel sheet and the aluminum-base metal sheet to be welded to each other. An electrode is energized by a predetermined weld current from an alternating power supply. The current path is limited to the area of the projections, and metallic melt formed by melting of the plating is accommodated between the projections, preventing the current-carrying area from being increased. Consequently, the temperature of the interface of the plated steel sheet and the aluminum-clad steel sheet can be efficiently raised, resulting in the formation of a proper nugget on both sides of the aluminum-clad steel sheet.

摘要翻译： 本发明涉及一种电阻焊接方法，该电阻焊接方法适用于已经镀防锈的钢基金属片与铝基金属片之间的点焊，目的在于允许电流高电流 电镀钢板和铝包钢板的密度，从而实现高质量的焊接。 包括具有突起的钢层和铝层的铝包覆钢板插入在要被焊接的镀覆钢板和铝基金属板之间。 电极由来自交流电源的预定焊接电流通电。 当前路径限于突起的区域，并且通过电镀熔化形成的金属熔体容纳在突起之间，防止载流区域增加。 因此，能够有效地提高镀覆钢板和铝复合钢板的界面的温度，从而在铝包覆钢板的两面形成适当的熔核。