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公开(公告)号：US4874576A
公开(公告)日：1989-10-17
申请号：US300330
申请日：1989-01-19
摘要： In a process of producing nodular cast iron wherein molten cast iron is treated in two stages with elements for inducing a formation of a predominantly nodular graphite, the crystallization of the graphite and the dynamic properties of the casting are improved in that a rare earth metal is added to the molten cast iron in the first treating stage and magnesium metal or a magnesium-containing master alloy in an amount which is sufficient for the formation of a predominantly nodular graphite is added to the molten cast iron in the second treating stage, in which no RE metal is added to the molten cast iron. The treatment is particularly effected with sheathed wires consisting of a steel sheath around a core of treating agent powder.
摘要翻译： 在生产球墨铸铁的过程中，其中熔融铸铁用两个阶段处理以诱导主要为结节状石墨形成的元素，石墨的结晶和铸件的动态性能得到改善，其中稀土金属为 在第一处理阶段添加到熔融铸铁中，并且在第二处理阶段将铁粉或镁合金的合金加入到熔融铸铁中，其中镁合金或含镁母合金的量足以形成主要为结节状的石墨，其中 在熔融铸铁中不添加RE金属。 这种处理特别是由围绕处理剂粉末核心的钢护套组成的护套线进行。
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公开(公告)号：US4867227A
公开(公告)日：1989-09-19
申请号：US227630
申请日：1988-08-02
摘要： A process is described in which cast iron melt are inoculated in the mold. The cast iron melt flowing through the sprue or gate system of the mold is contacted in the mold with an inoculate body that is contained in the mold. In order to increase the rate of dissolution and to improve the results of inoculation, said body is mounted at both ends in mutually opposite recesses (core prints) in the wall of the sprue or gate system. In another embodiment, the flow area is constricted closely below the inoculating body.
摘要翻译： 描述了将铸铁熔体接种在模具中的方法。 流过模具的直浇道或浇口系统的铸铁熔体在模具中与包含在模具中的接种体接触。 为了提高溶解速度并改善接种结果，所述体在两端在相互相对的凹口（核心印刷）中安装在浇道或浇口系统的壁中。 在另一个实施方案中，流动区域紧密地收缩在接种体下方。
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3.发明授权
公开(公告)号：US4540436A
公开(公告)日：1985-09-10
申请号：US626634
申请日：1984-07-02
CPC分类号： C22C33/08 , B22F1/0011 , C21C1/105
摘要： The present invention provides a treatment agent for cast iron melts based upon ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a specific surface area of from 0.2 to 0.8 m.sup.2 /g. according to BET.The present invention also provides a process for the production of this treatment agent, wherein a jet of molten ferrosilicon magnesium alloy is directed on to a bounce plate made of fire-resistant material and the melt droplets which bounce back from bounce plate are allowed to solidify in a liquid-filled collection receiver.
摘要翻译： 本发明提供一种基于硅含量为40〜80重量％，镁含量为0.5〜15重量％的硅铁镁的铸铁熔体处理剂，所述试剂为颗粒形式， 比表面积为0.2〜0.8m2 / g。 根据BET。 本发明还提供了一种制备该处理剂的方法，其中将熔融硅铁镁合金的射流引导到由耐火材料制成的反弹板上，并使从反弹板反弹的熔体液滴固化 在充满液体的收集器中。
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公开(公告)号：US4412578A
公开(公告)日：1983-11-01
申请号：US244955
申请日：1981-03-18
摘要： It is known to contact molten cast iron with various treating agents in the casting mold in order to influence the base structure or the form of the graphite. Such casting molds for making castings of cast iron containing vermicular and/or spheroidal graphite are provided with an intermediate chamber, which is provided in the pouring system between the pouring gate and the ingate to the casting mold proper. That intermediate chamber serves to receive the graphitizing agent and to contact it with the molten cast iron. To permit a functional adaptation of the chamber surface area or the surface area of the treating agent contained in the chamber to the pouring gate, which changes as the pouring proceeds, the casting mold is provided with a frustopyramidal intermediate chamber which has a rectangular base disposed in the parting plane of the mold.
摘要翻译： 已知在浇铸模具中使熔融铸铁与各种处理剂接触，以便影响石墨的基础结构或形式。 这种用于制造含有蠕墨铸铁和/或球墨铸铁的铸铁铸件的铸造模具设置有中间室，该中间室设置在浇注浇口和浇注浇口之间的浇注系统中。 该中间室用于接收石墨化剂并将其与熔融铸铁接触。 为了允许将腔室表面积或容纳在腔室中的处理剂的表面积进行功能性调整到浇注浇口的倾斜浇口，浇注模具设置有具有矩形基部的截头锥形中空室， 在模具的分型平面上。
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