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    • 1. 发明公开
    • 저과열 내지 무가열 온도에서의 주조를 위한 용융 금속의 제조 공정
    • 在低至零超临界温度下制备用于铸造的金属的方法
    • KR1020170007444A
    • 2017-01-18
    • KR1020167035375
    • 2014-05-16
    • 지스코 컴퍼니 리미티드
    • 와나신,제사다플레밍,머튼,씨
    • B22D1/00B22D17/00B22D17/28C22C1/00
    • B22D1/005B22D1/00B22D1/002B22D17/00B22D17/20B22D18/00B22D21/007C22C1/005
    • 저과열내지무가열온도에서의주조를위한용융금속의제조공정은열 추출프로브를용융물내에배치하는단계를포함하며, 동시에격렬한대류가가해져용융물의거의균일한냉각을보장한다. 이후, 저과열또는무과열온도에도달할때, 열추출프로브는신속하게제거된다. 마지막으로, 급속냉각된용융물을부품으로주조하기위한주형, 또는다이캐비티내로주입하기위한사출슬리브로신속하게이송된다. 상기공정은소량의고체가용융물의일부에형성하도록수행될수 있다. 이러한경우, 본발명의주요양태는신속하게공정을수행하여, 미세하게분산된상태로입자를유지시켜, 유동을지연시키고제조된금속부품의품질을향상시키는것이다. 보다긴 다이수명및 더욱짧은사이클시간으로인해제조된금속부품의비용이절감된다.
    • 在低至零过热温度下制备用于铸造的熔融金属的方法包括将热萃取探针放置在熔体中的步骤,同时施加剧烈的对流以确保熔体几乎均匀的冷却。 然后,当达到低或零过热温度时,热萃取探针被快速去除。 最后,将快速冷却的熔体快速转移到模具中以铸造成用于注入模腔的部分或喷射套筒。 该方法可以进行,使得部分熔体中形成少量固体。 在这种情况下,本发明的一个关键方面是快速地进行该过程,以便将颗粒保持在不会妨碍流动的精细分散状态,并且将改善所生产的金属部件的质量。 生产的金属部件的成本由于更长的模具寿命和更短的周期时间而降低。
    • 2. 发明公开
    • 석출경화 압출용 마그네슘 합금 및 그 제조방법
    • 降低硬化镁合金挤压及其制造方法
    • KR1020150139693A
    • 2015-12-14
    • KR1020140067620
    • 2014-06-03
    • 연세대학교 산학협력단
    • 김도향김정균오승현김원태
    • C22C23/00C22C11/00C22F1/06
    • C22C23/00B22D21/04C22C1/005C22C1/02C22C23/02C22C2200/00C22C2202/00C22F1/06
    • 기계적특성이우수한주석함유마그네슘합금으로서, 특히인장강도와연신율이동시에우수한주석함유마그네슘합금이제공된다. 본발명에따른마그네슘합금의제조방법은 0중량%를초과하고 14중량% 이하의 Sn, 0중량%를초과하고 5중량% 이하의 Li, 0중량%를초과하고 40중량% 이하의 Pb, 0중량%를초과하고 17중량% 이하의 Al 및 0중량%를초과하고 5중량% 이하의 Zn 중에서선택된하나의원소와잔부인 Mg을포함하는원료물질을용해및 주조하는단계; 상기주조된합금을용체화처리하는단계; 상기용체화처리된합금을시효처리하는단계; 및상기시효처리된합금을소성변형하는단계를포함한다. 본발명에따른마그네슘합금은제2상이결정립내에균질하게분포되고, 10㎛이하의결정립크기를가지므로, 연신율과인장강도가동시에우수한장점을갖는다.
    • 提供含有优异机械性能的锡的镁合金。 更具体地,提供了含有锡的镁合金,同时具有优异的拉伸强度和优异的伸长率。 根据本发明,制造镁合金的方法包括:将包含选自Sn重量%以上14重量%以下的元素,0重量%以上5重量%以下的原料溶解并铸造的工序 Li以上,0重量%以上,Pb:40重量%以下,Al:0.1重量%以下,17重量%以下,Zn:0重量%以下且5重量%以下。 剩下的是Mg; 对铸造合金进行溶解处理的步骤; 老化溶液处理合金的步骤; 以及对老化合金进行塑性变形的步骤。 根据本发明的镁合金同时具有优异的伸长率和优异的拉伸强度,因为第二相均匀分布在晶粒中并且具有10μm或更小的晶粒尺寸。
    • 5. 发明公开
    • 반응고 성형법을 이용한 쉬프트 포크의 제조방법
    • 使用半固化模具制造移位机的方法
    • KR1020020048465A
    • 2002-06-24
    • KR1020000077576
    • 2000-12-18
    • 현대자동차주식회사
    • 김종명
    • B22D27/09
    • B22D17/007B22D27/04B22D27/11C22C1/005
    • PURPOSE: A method for manufacturing a shift fork is provided to enhance the mechanical strength of the shift fork and to enhance the productivity of the shift fork by enabling forming or casting processes to be carried out in a coexisting state of both fluid phase and solid phase. CONSTITUTION: First, an aluminum alloy is melted into a semi-solidified state by heating it within a melting furnace at a temperature of 580-590 °C. As a result, an aluminum alloy melting liquid is made. Then, the semi-solidified aluminum alloy melting liquid is filled into a cavity of a mold. Thereafter, the semi-solidified aluminum alloy melting liquid is pressed and formed for about 20 seconds. As a result, a formed shift fork is made. Then, the formed shift fork is detached from the cavity. Finally, the formed shift fork undergoes post-working such as a surface treatment. As a result, a finished shift fork(40) is produced.
    • 目的:提供一种用于制造换档拨叉的方法,以提高换挡拨叉的机械强度,并通过使成形或铸造过程在流体相和固相的共存状态下进行而提高换档拨叉的生产率 。 构成:首先,通过在熔融炉内在580〜590℃的温度下加热,将铝合金熔融成半固化状态。 结果,制成铝合金熔化液。 然后,将半固化的铝合金熔融液体填充到模具的空腔中。 此后,将半固化的铝合金熔化液按压并形成约20秒钟。 结果,形成了一个变速叉。 然后,形成的换档拨叉与腔体分离。 最后,形成的换档拨叉经过诸如表面处理的后加工。 结果,产生了成品换档拨叉(40)。
    • 6. 发明公开
    • 세미 솔리드 금형
    • 半固体模具
    • KR1020010015979A
    • 2001-03-05
    • KR1020000048204
    • 2000-08-17
    • 김임용
    • 김임용
    • B22D18/00
    • B22D17/007C22C1/005
    • PURPOSE: A semi-solid mold is provided to achieve the uniformity of a structure by preventing the generation of an air bubble for forming a product using a thixoforming method. CONSTITUTION: The semi-solid mold(1) for forming a product in a specific shape by charging a semi-melted metal at a high pressure consists of an upper die(4) and a lower die(5), and a cavity(2) defined between the upper die and the lower die. The cavity is communicated with an L-shaped gate(6) for charging a semi-melted billet(3) at a high pressure. A dispersion guider(7) and a rounded portion are formed on the inner end of the gate. A slider(9) operated by a cylinder is installed on the tip end of the gate. The slider has an oil heater hole(12) connected to an oil heater for heating the semi-solid mold. By using the semi-solid mold, parts made of metal complex materials in various shape is fabricated using only one process. Also, by using the semi-solid billet having viscosity greater than liquid, the generation of an air bubble is prevented, and the damage caused by shrinkage is reduced.
    • 目的:提供半固体模具以通过使用触变形成方法防止产生用于形成产品的气泡来实现结构的均匀性。 构成:通过在高压下加入半熔融金属来形成具有特定形状的产品的半固态模具(1)由上模(4)和下模(5)组成,空腔(2) )限定在上模和下模之间。 空腔与L形门(6)连通,用于在高压下对半熔化的坯料(3)进行充填。 分散导向器(7)和圆形部分形成在门的内端上。 由气缸操作的滑块(9)安装在门的顶端。 滑块具有连接到用于加热半固体模具的油加热器的油加热器孔(12)。 通过使用半固体模具,仅使用一种工艺制造由各种形状的金属复合材料制成的零件。 此外,通过使用粘度大于液体的半固体坯料,可以防止产生气泡,减少由收缩引起的损伤。
    • 7. 发明公开
    • 반-고체 금속에서 내-마모성과 내식성이 높은 분말야금 코발트제제품
    • 用于金属半固体处理的装置
    • KR1020000053038A
    • 2000-08-25
    • KR1019997003937
    • 1997-11-03
    • 틱소매트 인코포레이티드
    • 케네스이.피나우레이먼드에프.데커
    • C22C19/07
    • C22C1/005B22D17/007B22D17/2023B22D17/203C22C1/0433
    • PURPOSE: Provided is fully dense powder metallurgy articles, made from a novel Co--Cr--W--C type alloy being particularly suited for long term use in high wear, high temperature machinery employing a variant process of semi-solid metal molding (SSM). CONSTITUTION: A fully dense powder metal cobalt-base article has high resistance to semi-solid metal wear and corrosion. The article has a constituent composition of C in an amount of about 0.65 to less than about 1%, W in an amount of about 3 to about 5%, Cr in an amount of about 25 to about 30%, Co in an amount principally comprising the balance of the article. The article has a hardness of greater than 42HRC and more preferably 45HRC, a bend fracture strength of greater than 330 ksi and substantial dimensional and mechanical property stability during exposure to temperatures in range of about 1100°F. to 1500 °F.
    • 目的:提供由新型Co-Cr-W-C型合金制成的完全致密的粉末冶金制品,特别适用于高磨损长期使用的高温机械,采用半固态金属成型的变型工艺 (SSM)。 构成:完全致密的粉末金属钴基制品对半固体金属磨损和腐蚀具有很高的抵抗力。 该制品具有约0.65至小于约1%的量的组成组成,约3至约5%的W,约25至约30%的Cr,其量主要为 包括文章的余额。 该制品的硬度大于42HRC,更优选为45HRC,弯曲断裂强度大于330ksi,并且在暴露于约1100°F范围内的温度下具有显着的尺寸和机械性能稳定性。 至1500°F。