Anticorrosive agents and use thereof
    1.
    发明授权
    Anticorrosive agents and use thereof 失效
    防腐剂及其用途

    公开(公告)号:US4956016A

    公开(公告)日:1990-09-11

    申请号:US316889

    申请日:1989-02-28

    IPC分类号: C23F11/18

    CPC分类号: C23F11/188

    摘要: Corrosion inhibitors containing a mixture of one or more water soluble tetraborate salts and one or more water soluble condensed phosphate salts are non-toxic and are more effective than either of the components alone. These compositions containing both tetraborates and condensed phosphates are also more effective than such prior art inhibitors as nitrites and ethanolamine-based inhibitors.

    摘要翻译: 含有一种或多种水溶性四硼酸盐和一种或多种水溶性缩合磷酸盐的混合物的腐蚀抑制剂是无毒的,并且比单独的组分更有效。 含有四硼酸盐和缩合磷酸盐的这些组合物也比作为亚硝酸盐和基于乙醇胺的抑制剂的现有技术抑制剂更有效。

    Method for activating metal surfaces prior to zinc phosphation
    2.
    发明授权
    Method for activating metal surfaces prior to zinc phosphation 失效
    在磷化锌之前激活金属表面的方法

    公开(公告)号:US4707193A

    公开(公告)日:1987-11-17

    申请号:US933832

    申请日:1986-11-24

    IPC分类号: C23C22/07 C23C22/80 C23C22/12

    CPC分类号: C23C22/80

    摘要: A method for activating a metal surface during a phosphating process by treating the surface with an activating solution containing titanium ions, phosphate ions, and borate ions, after initial cleaning and rinsing but before phosphation.

    摘要翻译: 在磷化过程中通过在初始清洗和漂洗之后但磷化之前用含有钛离子,磷酸根离子和硼酸根离子的活化溶液处理表面的方法来激活金属表面。

    Process for the zinc/calcium phosphatizing of metal surfaces at low
treatment temperatures
    3.
    发明授权
    Process for the zinc/calcium phosphatizing of metal surfaces at low treatment temperatures 失效
    在低处理温度下金属表面的锌/钙磷酸化过程

    公开(公告)号:US4622078A

    公开(公告)日:1986-11-11

    申请号:US703251

    申请日:1985-02-20

    摘要: The invention relates to a process for phosphatizing metal surfaces with an acidic phosphatizing solution containing zinc ions, calcium ions, phosphate ions and accelerators and, optionally, other additives, characterized in that, after degreasing and without activation, the metal surfaces are brought into contact at 30.degree. to 65.degree. C. with solutions which contain Zn.sup.2+, Ca.sup.2+, PO.sub.4.sup.3- and, as accelerators, nitrate and/or nitrite and/or chlorate ions and/or an organic nitro compound and/or H.sub.2 O.sub.2 or an inorganic peroxide and which have a pH-value of from 2.2 to 3.8, a ratio of free acid to toal acid of from 1:10 to 1:60 and a ratio by weight of (Ca.sup.2+ +Zn.sup.2+) to PO.sub.4.sup.3- of from 1:>8 to 1:40, and to the use of this process for pretreating the metal surfaces for painting by electrodeposition, particularly by cathodic electrodeposition.

    摘要翻译: 本发明涉及一种使用含有锌离子,钙离子,磷酸根离子和促进剂的酸性磷酸盐溶液以及任选的其它添加剂对金属表面进行磷酸化的方法,其特征在于,在脱脂和不活化之后,使金属表面接触 在含有Zn2 +,Ca2 +,PO43-和作为促进剂的硝酸盐和/或亚硝酸盐和/或氯酸根离子和/或有机硝基化合物和/或H 2 O 2或无机过氧化物的溶液中, pH值为2.2〜3.8,游离酸与甲苯磺酸的比例为1:10〜1:60,(Ca2 + Zn2 +)与PO43-的重量比为1:8〜 1:40,以及使用该方法通过电沉积尤其是通过阴极电沉积预处理金属表面进行喷涂。

    Process for phosphating metal surfaces
    4.
    发明授权
    Process for phosphating metal surfaces 失效
    磷化金属表面的工艺

    公开(公告)号:US4944813A

    公开(公告)日:1990-07-31

    申请号:US297155

    申请日:1989-01-13

    CPC分类号: C23C22/22 C23C22/367

    摘要: The present invention relates to a process for phosphating metal surfaces, and more specifically of surfaces of iron, zinc, and aluminum and the alloys thereof as a pretreatment for cold working wherein the surfaces without previous activation are contacted in a temperature range of from 30.degree. C. to 70.degree. C. with an aqueous solution containing(a) from 10 to 40 g/l of Ca.sup.2+ ions,(b) from 10 to 40 g/l of Zn.sup.2+ ions,(c) from 10 to 100 g/l of OP.sub.4.sup.3- ionsand, as accelerator,(d) from 10 to 100 g/l of NO.sub.3.sup.- ions and/or(e) from 0.1 to 2.0 g/l of organic nitro compounds,said solution exhibiting a pH value in the range of from 2.0 to 3.8 and a ratio of free acid to total acid of from 1:4 to 1:100.

    摘要翻译: 本发明涉及一种用于将金属表面磷酸化的方法,更具体地说是将铁,锌和铝的表面以及它们的合金作为冷加工的预处理方法,其中没有先前活化的表面在30℃的温度范围内接触 (a)10-40g / l Ca2 +离子的水溶液,(b)10-40g / l Zn2 +离子,(c)10-100g / l 的OP43-离子,并且作为促进剂,(d)10至100g / l的NO 3 - 离子和/或(e)0.1至2.0g / l的有机硝基化合物,所述溶液的pH值在该范围内 为2.0至3.8,游离酸与总酸的比例为1:4至1:100。

    Phosphating solutions and process
    5.
    发明授权
    Phosphating solutions and process 失效
    磷化溶液和工艺

    公开(公告)号:US4490185A

    公开(公告)日:1984-12-25

    申请号:US556746

    申请日:1983-11-30

    摘要: A process for phosphating metal surfaces, particularly iron, steel and zinc-plated steel, by treating them with aqueous, acidic zinc phosphate baths at only moderately elevated temperatures in the range of from 22.degree. to 38.degree. C. The baths used have 2 to 6 g/l of Zn; 4 to 23 g/l of PO.sub.4.sup.3- ; a free acid content of 0.05 to 0.4 points; and a pH-value of 3.0 to 4.0. The ratio of Zn to PO.sub.4.sup.3- is preferably in the range from 1:2 to 1:11. The baths can advantageously contain nickel-(II)-ions, with a nickel content not exceeding a Zn:Ni ratio of 1:0.5. This process gives iron-containing zinc phosphate layers having an iron content of from 5 to 20% by weight and is particularly useful for pretreatment for subsequent cathodic electro-dip-lacquering.

    摘要翻译: 通过在22℃至38℃的适度升高的温度下用含水的酸性磷酸锌浴处理金属表面,特别是铁,钢和镀锌钢的方法,所用的浴具有2至 6g / l Zn; 4〜23g / l PO43-; 游离酸含量为0.05〜0.4分; pH值为3.0〜4.0。 Zn与PO43-的比优选在1:2至1:11的范围内。 该浴可以有利地包含镍 - (II),其镍含量不超过Zn:Ni比为1:0.5。 该方法产生铁含量为5至20重量%的含铁磷酸锌层,并且对于随后的阴极电镀漆的预处理特别有用。

    Process for welding cast iron
    6.
    发明授权
    Process for welding cast iron 失效
    焊接铸铁工艺

    公开(公告)号:US4793542A

    公开(公告)日:1988-12-27

    申请号:US138050

    申请日:1987-12-28

    IPC分类号: B23K20/12

    摘要: An improved friction-welding process for effecting a joint between steel and nodular graphite-containing cast iron by using (i) a short friction-generating time so as to minimize diffusion of carbon into steel and (ii) an elevated forging pressure so as to effect a quantitative ejection of carburized melt but avoid formation of a weld laminate, is provided, as well as a nodular graphite-containing cast iron of grade 40.3 S, suitable for use in friction-welding and comprising about 280-320 graphite nodules per mm.sup.2, 280-300 ferrite grains per mm.sup.2 and a spherulite proportion of about at least 95% by weight of the graphite precipitations.

    摘要翻译: 一种改进的摩擦焊接方法,用于通过使用(i)短的摩擦产生时间来实现钢和含节结构的含石墨的铸铁之间的接合,以使碳的扩散最小化到钢中,和(ii)升高的锻造压力,以便 实现渗碳熔体的定量喷射,但避免形成焊接层压板,以及适用于摩擦焊接的含有40.3 S的球墨铸铁,其包含约280-320个石墨结核/ mm2 ,280-300铁素体颗粒/ mm 2,球晶比例约为石墨沉淀物重量的至少95%。