公开(公告)号：US06866085B2

公开(公告)日：2005-03-15

申请号：US10144638

申请日：2002-05-13

申请人： Akio Hashimoto ,  Takaaki Ikari ,  Hiromi Takagi ,  Sumi Yoshikawa

发明人： Akio Hashimoto ,  Takaaki Ikari ,  Hiromi Takagi ,  Sumi Yoshikawa

IPC分类号： C22C21/02 ,  B22D17/00 ,  C22C21/04 ,  B22D27/09

CPC分类号： B22D17/00 ,  C22C21/04

摘要： The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an α-Al phase in a surface layer is of average grain size different by 50 μm or less from an α-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 μm or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20° C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.

摘要翻译： 新提出的铸铝合金产品的组成包括：6.5-8.0％Si，0.25-0.45％Mg，0.08-0.40％Fe，0.001-0.01％Ca，P小于0.001％，0.02-0.1％Ti，0.001- 0.01％B，任选一种或两种0.05-0.3％Cr和0.05-0.2％Mn，余量为Al，除了不可避免的杂质。 具有表面层中的α-Al相的平均粒径与内部的α-Al相的平均粒径不同于50μm以下的冶金结构，并且共晶Si粒子的最大尺寸为400μm， 较小。 通过以0.05-0.25m /秒的注入速度将熔融铝合金注入金属模具中，然后在液相线和固相线之间的温度范围内以20℃/或更高的冷却速度冷却注入的合金来制造 处于30MPa以上的状态下的曲线。 由于铸造产品具有良好的延展性，所以它被用作通过铆接等将另一部件与其连接的部件。

公开(公告)号：US06176294B1

公开(公告)日：2001-01-23

申请号：US09352271

申请日：1999-07-13

申请人： Yukio Kuramasu ,  Takaaki Ikari

发明人： Yukio Kuramasu ,  Takaaki Ikari

IPC分类号： B22D2715

CPC分类号： B22D17/14

摘要： After a cavity 2 of a die-casting mold 1 is evacuated to exclude gases, oxygen gas is blown into the cavity 2 until an internal pressure of the cavity exceeds the atmospheric pressure, and then a molten metal 5 is forcibly injected into the cavity 2. The cavity 2 is evacuated to a degree of vacuum less than 100 millibar through a suction nozzle 11. The oxygen gas is blown through a nozzle 14 into the cavity 2 so as to fill the cavity 2 with the oxygen gas at an internal pressure higher than the atmospheric pressure. When the molten metal 5 is injected into the cavity 2 clarified in this way, inclusion of gases is perfectly prohibited. As a result, obtained die-cast products are free from defects such as blowholes or porosity caused by inclusion of gases and so useful as functional members as well as structural members.

摘要翻译： 在将压铸模具1的空腔2排空以排除气体之后，将氧气吹入空腔2，直到空腔的内部压力超过大气压力，然后将熔融金属5强制地注入腔体2 空腔2通过吸嘴11抽真空至小于100毫巴的真空度。氧气通过喷嘴14吹入空腔2中，以便在内部压力较高的情况下用氧气填充空腔2 比大气压力。 当以这种方式将熔融金属5注入到空腔2中时，完全禁止包含气体。 结果，获得的压铸产品没有诸如由于包含气体引起的气孔或孔隙等作为功能构件以及结构构件有用的缺陷。

公开(公告)号：US06648054B2

公开(公告)日：2003-11-18

申请号：US10169865

申请日：2002-07-10

申请人： Yukio Kuramasu ,  Osamu Yoshida ,  Yoshihiro Tajima ,  Takaaki Ikari

发明人： Yukio Kuramasu ,  Osamu Yoshida ,  Yoshihiro Tajima ,  Takaaki Ikari

IPC分类号： B22D1710

CPC分类号： B22D17/14 ,  B22D2/00 ,  B22D17/32

摘要： The present invention provides a die-casting method comprising the steps of evacuating a cavity 30 defined by dies of a die-casting machine to provide therein a vacuum of 100 millibar or less during a first period, injecting a reactive gas from a sleeve of the die-casting machine into the cavity 30 during a second period which has a partial overlap period with the first period and follows the overlap period, so as to increase the inner pressure of the cavity to atmospheric pressure or more, pouring a molten aluminum alloy M into the sleeve 40 while keeping the injection of the reactive gas, and subsequently moving a plunger 42 in the sleeve forward to forcibly inject the molten aluminum alloy from the sleeve into the cavity 30 while re-evacuating the cavity 30. The evacuation, reactive-gas injection and re-evacuation operations can be performed with respective overlap periods therebetween. During the operation of supplying the molten aluminum alloy, air and water are effectively discharged to outside, and the reactive gas in an unreacted state is discharged to outside without being incorporated into the molten aluminum alloy. Thus, the present invention provides a die-cast product having a significantly reduced volume of incorporated gases and allows the die-cast product to be applied to functional members.

摘要翻译： 本发明提供了一种压铸方法，包括以下步骤：抽空由压铸机的模具限定的空腔30，以在其中在第一时段内提供100毫巴或更小的真空度，从反应气体的套筒 压铸机在第二时段内进入空腔30，该第二时段具有与第一周期的部分重叠周期并且跟随重叠周期，以便将空腔的内部压力增加到大气压力或更大，将熔融铝合金M 在保持喷射反应气体的同时进入套管40，随后将套筒中的柱塞42向前移动，以将熔融的铝合金从套筒强制地注入空腔30中，同时对空腔30进行排空。 气体注入和再排气操作可以以它们之间的相应重叠周期进行。 在供应熔融铝合金的操作期间，空气和水被有效地排放到外部，并且未反应状态的反应气体被排放到外部而不加入到熔融铝合金中。 因此，本发明提供了具有显着降低的并入气体体积的压铸产品，并且允许将压铸产品应用于功能部件。