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    • 2. 发明授权
    • Process for producing a thixocast semi-molten material
    • 生产触变半熔融材料的方法
    • US5925199A
    • 1999-07-20
    • US755296
    • 1996-11-22
    • Haruo ShiinaNobuhiro SaitoTakeyoshi Nakamura
    • Haruo ShiinaNobuhiro SaitoTakeyoshi Nakamura
    • B22D18/02B22D17/00B22D17/30B22D27/09C22B9/16C22C1/00C22C1/02C22C21/02B22D27/02B22D27/04C22F1/00
    • C22C1/005B22D17/007B22D17/30Y10S164/90
    • Solid and liquid phases coexist in a semi-molten casting material. A plurality of composite-solid phases having liquid and solid phase regions and a plurality of single-solid phases exist as the solid phases in a mixed state in an outer layer portion of the semi-molten casting material. If the sectional area of the solid phase region is represented by A, and the sectional area of the solid phase region is represented by B in one of the composite-solid phases, the liquid phase enclosure rate P of the composite-solid phase is defined as being represented by P={B/(A+B)}.times.100 (%). The liquid phase enclosure rate P of the single-solid phase is equal to 0 (%). When two groups are selected from a class of the solid phases, for example, by first and second straight lines so as to include a plurality of the solid phases, average values M.sub.1 and M.sub.2 of liquid phase enclosure rates of, for example, six solid phases in each of the first and second groups are represented by M.sub.1 =(P.sub.1 +P.sub.2 - - - +P.sub.5 +P.sub.6)/6 and M.sub.2 =(P.sub.7 +P.sub.8 - - - +P.sub.11 +P.sub.12)/6, and an average value M.sub.M of the average values M.sub.1 and M.sub.2 is set in a range of M.sub.M .gtoreq.20%. This inhibits the flow-out of the liquid phases from the outer layer portion in the thixocast semi-molten casting material.
    • 固体和液相在半熔融铸造材料中共存。 在半熔融铸造材料的外层部分中,以混合状态存在多个具有液相和固相区域以及多个单相固相的复相固相。 如果固相区域的截面积由A表示,并且固相区域的截面积在复合固相之一中由B表示,则复合固相的液相封闭率P被定义 由P = {B /(A + B)}×100(%)表示。 单相固相的液相封闭率P等于0(%)。 当从一类固相中选择两组时,例如通过第一和第二直线选择包括多个固相,液相封装速率的平均值M1和M2例如为六个固体 第一组和第二组中的每一个的相位由M1 =(P1 + P2 - - + P5 + P6)/ 6和M2 =(P7 + P8 - - + P11 + P12)/ 6表示,平均值 将平均值M1和M2的MM设置在MM> / = 20%的范围内。 这就抑制了在thixocast半熔融铸造材料中从外层部分流出的液相。
    • 3. 发明授权
    • Alloy material for thixocasting, process for preparing semi-molten alloy
material for thixocasting and thixocasting process
    • 用于触媒的合金材料,用于制备用于触变和触变过程的半熔融合金材料的方法
    • US5849115A
    • 1998-12-15
    • US861265
    • 1997-05-21
    • Haruo ShiinaNobuhiro SaitoTakeyoshi NakamuraTakeshi Sugawara
    • Haruo ShiinaNobuhiro SaitoTakeyoshi NakamuraTakeshi Sugawara
    • C22C1/00G01N33/20B22D21/00
    • C22C1/005G01N33/20Y10S164/90
    • A differential thermal analysis thermograph for a thixocasting aluminum alloy material is such that, a relationship, E.sub.1 >E.sub.2, is established between a peak value E.sub.1 of a first angled endothermic section generated by eutectic melting and a peak value E.sub.2 of a second angled endothermic section generated by melting of an element having a melting point higher than the eutectic point. Thus, a liquid phase produced by the eutectic melting has a large latent heat due to the fact that the peak value E.sub.1 of the first angled endothermic section is larger than the peak value E.sub.2 of the second angled endothermic section in a semi-molten eutectic aluminum alloy material derived from the thixocasting aluminum alloy material. As a result, in a solidification step of the thixocasting process, a liquid phase produced by the eutectic melting is sufficiently fed around a solid phase in response to the solidification and shrinkage of the solid phase, and then solidified. Thus, it is possible to produce a casting free from defects such as voids on the order of a micron.
    • 用于触媒铝合金材料的差示热分析热成像仪是这样的,即通过由共晶熔融产生的第一倾斜吸热部分的峰值E1与第二成角度吸热部分的峰值E2之间建立关系E1> E2 通过熔点高于共晶点的熔点而产生。 因此,由于第一成角度吸热部的峰值E1大于半熔融共晶铝中的第二倾斜吸热部的峰值E2,所以由共晶熔融产生的液相具有大的潜热 衍生自thixocasting铝合金材料的合金材料。 结果,在固化步骤中,通过共晶熔融产生的液相,以固相的固相和收缩为固相充分地进料,然后固化。 因此,可以生产没有诸如微米级的空隙的缺陷的铸件。
    • 4. 发明授权
    • Thixocasting process, and thixocasting aluminum alloy material
    • Thixocasting工艺,和thixocasting铝合金材料
    • US5993572A
    • 1999-11-30
    • US728435
    • 1996-10-09
    • Nobuhiro SaitoHaruo ShiinaTakeyoshi NakamuraTakeshi SugawaraKazuo Kikawa
    • Nobuhiro SaitoHaruo ShiinaTakeyoshi NakamuraTakeshi SugawaraKazuo Kikawa
    • C22C1/00C22C21/00
    • C22C1/005
    • In a thixocasting process, the following steps are used: a step of subjecting, to a heating treatment, an Al-Si based alloy material having a hypo eutectic crystal composition and a characteristic that a first angled endothermic section appearing due to the melting of a eutectic crystal and a second angled endothermic section appearing due to the melting of a component having a melting point higher than a eutectic point exist in a differential calorimetric curve, thereby preparing a semi-molten Al-Si based alloy material having solid and liquid phases coexisting therein; a step of pouring the semi-molten Al-Si based alloy material into a cavity in a casting mold under pressure; and a step of solidifying the semi-molten Al-Si based alloy material under pressure. When the temperature of a rise-start point in the first angled endothermic section is represented by T.sub.1, and the temperature of a drop-end point the first angled endothermic sections is represented by T.sub.2, the casting temperature T for the semi-molten Al-Si based alloy material is set in a range of T.sub.1 .ltoreq.T.ltoreq.T.sub.2. Thus, the fine precipitation of a primary crystal Si phase can be realized to provide an increase in strength of an aluminum alloy cast product.
    • 在触媒处理中,使用以下步骤:对具有低共晶组成的Al-Si系合金材料进行加热处理的步骤,以及由于熔融而形成的第一成角度的吸热部 由于熔点高于共晶点的熔点高于共晶点而出现的共晶晶体和第二倾斜的吸热部分存在于差示热量曲线中,从而制备具有固相和液相的半熔融Al-Si基合金材料共存 其中 将半熔融的Al-Si基合金材料在压力下浇注到铸模中的空腔中的步骤; 以及在压力下使半熔融Al-Si系合金材料凝固的工序。 当第一倾斜吸热部分中的起始点的温度由T1表示,并且下降端点的温度将第一倾斜吸热部分表示为T2时,半熔融Al- Si基合金材料设定在T1
    • 6. 发明授权
    • Method of manufacturing heat resistant, high-strength structural members
of sintered aluminum alloy
    • 制造耐热,高强度烧结铝合金结构件的方法
    • US4853179A
    • 1989-08-01
    • US921999
    • 1986-10-22
    • Haruo Shiina
    • Haruo Shiina
    • B22F3/02B22F3/17C22C1/04C22C21/02C22F1/043
    • B21J5/08B21K1/766C22C1/0416C22F1/043
    • This invention relates to a method of manufacturing a structural member made of a sintered Al alloy having heat resistance and high strength. A powder is used having a composition which makes it difficult to perform hot forging, i.e. 8.0 to 30.0 wt. % of Si, 0.8 to 7.5 wt. % of Cu, 0.3 to 3.5 wt. % of Mg, 2.0 to 10.0 wt. % of Fe, 0.5 to 5.0 wt. % of Mn, and a balance of Al. After being subjected to press-forming, this Al alloy powder is subjected to hot extrusion at a temperature of 300.degree. to 450.degree. C., the extruded product is heated with electric resistance heating by electric current which is passed therethrough and subjected to forging at a temperature of 300.degree. to 495.degree. C. According to this method, a structural member made of a sintered Al alloy having heat resistance and high strength and having the aforementioned powder composition can be easily obtained without cracking.
    • 本发明涉及一种制造具有耐热性和高强度的烧结Al合金的结构件的方法。 使用具有难以进行热锻造的组合物即8.0〜30.0重量%的粉末。 %的Si,0.8〜7.5wt。 %的Cu,0.3〜3.5wt。 %的Mg,2.0〜10.0wt。 %的Fe,0.5〜5.0wt。 %的Mn,余量的Al。 在进行压制成形之后,将该Al合金粉末在300〜450℃的温度下进行热挤压,通过电流加热,将其挤出,并通过电流加热,并进行锻造 温度在300〜495℃。根据该方法,可以容易地获得具有耐热性和高强度并具有上述粉末组成的烧结Al合金的结构件而不会开裂。