Method for hot and immersion alumising of compactly formed ferrous alloy
products
    1.
    发明授权
    Method for hot and immersion alumising of compactly formed ferrous alloy products 失效
    紧密成型铁合金产品的热浸镀铝方法

    公开(公告)号:US4070210A

    公开(公告)日:1978-01-24

    申请号:US649158

    申请日:1976-01-14

    IPC分类号: C21D1/48 C23C2/12

    CPC分类号: C21D1/48 C23C2/12

    摘要: A process for simultaneously heat treating and aluminizing ferrous alloy products comprising pre-heating and immersing such products in a molten aluminum metal bath for a necessary period to both heat treat and aluminize, followed by a vibratory removal of any excess molten aluminum metal on said products.

    摘要翻译: 一种同时对铁合金产品进行热处理和镀铝的方法,包括将这种产品在熔融的铝金属浴中预热和浸入一段必要的时间以进行热处理和镀铝,然后在所述产品上振动除去任何多余的熔融金属金属 。

    Method of producing layers of lead and its alloys on workpieces made of
ferrous alloys
    3.
    发明授权
    Method of producing layers of lead and its alloys on workpieces made of ferrous alloys 失效
    在由铁合金制成的工件上生产铅及其合金层的方法

    公开(公告)号:US4070511A

    公开(公告)日:1978-01-24

    申请号:US713219

    申请日:1976-08-09

    IPC分类号: C23C2/10 C23C1/06 C23C1/08

    摘要: A method of producing layers of lead and its alloys on workpieces made of ferrous alloys comprising dipping the workpieces to be coated into a two-layer bath, the upper layer of which is a bath of aluminum or its alloys, and the bottom layer of which is a bath of lead or its alloys. The workpieces are then taken out of the deeper layer of the bath of lead and its alloys by pulling them through the upper layer of the bath of aluminum and its alloys, or by pulling the workpieces through the bath of metal, provided in a vessel connected with the bottom layer of the bath.The temperature of both baths, the upper bath and of the bath in the vessel connected with the bottom bath, is maintained within the range of 150.degree. C to 900.degree. C. The temperatures of the bath of the upper layer, of the bath of the bottom layer, and of the bath in the vessel connected with the bath of the bottom layer are equal or differ from each other by 50.degree. C to 750.degree. C.

    摘要翻译: 一种在由铁合金制成的工件上制造铅及其合金层的方法,包括将待涂覆的工件浸入两层浴中,其上层是铝或其合金的浴,其底层 是铅或其合金的浴。 然后将工件从铅和其合金的较深层中取出,将其通过铝及其合金的浴的上层拉出,或者通过将工件拉过连接在容器中的容器中的金属浴来拉出工件 与浴底层。

    Method of preparation of the surfaces of products made of iron alloys,
preceding the process of hot-dip aluminizing
    4.
    发明授权
    Method of preparation of the surfaces of products made of iron alloys, preceding the process of hot-dip aluminizing 失效
    在热浸镀铝工艺之前,制备由铁合金制成的产品表面的方法

    公开(公告)号:US4158710A

    公开(公告)日:1979-06-19

    申请号:US865780

    申请日:1977-12-29

    IPC分类号: C23C2/12 C23C1/08 C23C1/12

    CPC分类号: C23C2/12

    摘要: The work-pieces are mechanically cleaned, degreased and washed, and then etched in an aqueous solution containing 0.5-1.0% by weight of citric acid, and 16-24% by weight of hydrochloric acid, having a temperature of 15.degree.-30.degree. C., preferably of 20.degree.-25.degree. C., for the time of 1-20 minutes, preferably 2-5 minutes, whereafter the work-pieces are neutralized in an aqueous ammonia solution having a concentration not exceeding 1% by weight, at a temperature of 15.degree.-25.degree. C., in a time not shorter than 1 minute. After being washed in water at a temperature not exceeding 35.degree. C. in a time not shorter than 1 minute, they are dipped in an agitated aqueous solution of the flux, containing 1.8-2.5% by weight of potassium fluoride, 0.8-1.5% by weight of sodium fluoride, and 1.5-3.0% by weight of potassium fluorozirconate, having a temperature of 40.degree.-80.degree. C. After at least two minutes of holding in the flux, the work-pieces are dried and finally dipped in a melt of aluminum or alloys thereof. Alternatively a flux having composition 1.5-2.0% by weight of potassium fluoride, 1.5-2.0% by weight of sodium fluoride, 6.0-10.0% by weight of sodium tetraborate and 2.5-5.0% by weight of acetic acid, having a temperature of 15.degree.-40.degree. C. may be used, for a period not shorter than 2 minutes.

    摘要翻译: 将工件机械地清洗,脱脂和洗涤,然后在含有0.5-1.0重量%柠檬酸和16-24重量%盐酸的水溶液中蚀刻,温度为15-30℃ 优选20°-25℃,时间为1-20分钟,优选2-5分钟,然后将工件在浓度不超过1重量%的氨水溶液中中和, 在15°-25℃的温度下,在不短于1分钟的时间内。 在不超过35℃的温度下在不短于1分钟的时间内在水中洗涤后,将其浸入搅拌的助熔剂水溶液中,该溶液含有1.8-2.5重量%的氟化钾,0.8-1.5重量% 的氟化钠和1.5-3.0重量%的氟锆酸钾,温度为40-80℃。在焊剂中保持至少两分钟后,将工件干燥并最终浸入 铝的熔化或其合金。 或者,具有组成为氟化钾1.5-2.0重量%,氟化钠1.5-2.0重量%,四硼酸钠6.0-10.0重量%和乙酸2.5-5.0重量%的助熔剂,温度为15 可以使用-40℃-40℃,时间不短于2分钟。

    Method of producing coatings of copper alloy on ferrous alloys
    5.
    发明授权
    Method of producing coatings of copper alloy on ferrous alloys 失效
    在铁合金上生产铜合金涂层的方法

    公开(公告)号:US4142011A

    公开(公告)日:1979-02-27

    申请号:US713604

    申请日:1976-08-11

    IPC分类号: C23C2/04 C23C1/10 C23C1/04

    CPC分类号: C23C2/04 Y10T428/12924

    摘要: A method of producing coatings of copper alloys in hot-dip process on workpieces made of ferrous alloys comprising dipping the workpieces to be coated into baths of molten alloys of Cu with Si, Sn, Al, P, In, Ca, Be, having a temperature within the range of 700.degree.-1100.degree. C., with a single-stage or a two-stage movement, the workpieces then being held in the bath for from 15 seconds to 60 minutes and taken out of the bath and cooled at any desirable rate.

    摘要翻译: 一种在由铁合金制成的工件上制造的铜合金涂层的方法,包括将待涂覆的工件浸入到具有Si,Sn,Al,P,In,Ca,Be的Cu的熔融合金的浴中, 温度在700°-1100℃的范围内,通过单级或两级运动,然后将工件保持在浴中15秒至60分钟,并从浴中取出并冷却任何 理想率。