Method for anti-corrosion pre-treatment of a metal surface containing steel, galvanised steel, aluminium, magnesium and/or a zinc-magnesium alloy

    公开(公告)号:US11441226B2

    公开(公告)日:2022-09-13

    申请号:US16312908

    申请日:2017-06-21

    申请人: CHEMETALL GMBH

    IPC分类号: C23C22/34 C23C22/80 C23C22/78

    摘要: Described herein is an improved process for an anticorrosion pretreatment of a metallic surface including steel, galvanized steel, aluminum, magnesium and/or a zinc-magnesium alloy, wherein the metallic surface is brought into contact with an aqueous composition A including a) from 0.01 to 0.5 g/l of a copolymer and the metallic surface is brought into contact with an acidic aqueous composition B including b1) a compound selected from the group consisting of titanium, zirconium and hafnium compounds, wherein the metallic surface is brought into contact i) firstly with the composition A and then with the composition B, ii) firstly with the composition B and then with the composition A and/or iii) simultaneously with the composition A and the composition B.
    Also described herein is a corresponding aqueous composition A, an aqueous concentrate for producing this composition, a correspondingly coated metallic surface and a method of using a correspondingly coated metallic substrate.

    SYSTEMS AND METHODS FOR MAINTAINING PRETREATMENT BATHS

    公开(公告)号:US20200332420A1

    公开(公告)日:2020-10-22

    申请号:US16385173

    申请日:2019-04-16

    IPC分类号: C23C22/80 B32B15/01

    摘要: Disclosed is a system for maintaining a pretreatment bath containing a pretreatment comprising a Group IVB metal. The system comprises an aqueous reducing agent comprising a metal cation and a latent source of sulfate which, upon reaction with a contaminant in the pretreatment bath, forms a metal sulfate. The contaminant comprises a nitrite source. The metal sulfate salt has a pKsp of 4.5 to 11 at a temperature of 25° C. Also disclosed is a method for maintaining a pretreatment bath containing a pretreatment composition comprising a Group IVB metal. The method comprises supplying the reducing agent to the pretreatment bath in an amount sufficient to reduce a pollution ratio of the pretreatment bath to less than 1:1. Also disclosed are substrates with a pretreatment bath maintained according to the system and method.

    METHOD OF PRODUCING SURFACE-TREATED METAL MATERIAL AND METHOD OF PRODUCING COATED METAL ITEM
    7.
    发明申请
    METHOD OF PRODUCING SURFACE-TREATED METAL MATERIAL AND METHOD OF PRODUCING COATED METAL ITEM 有权
    生产表面处理金属材料的方法及其制造方法

    公开(公告)号:US20100243465A1

    公开(公告)日:2010-09-30

    申请号:US12679048

    申请日:2008-09-26

    IPC分类号: C23C22/80 B05D3/10

    摘要: A method of producing a surface-treated metal material, comprising: surface treating a metal material using a treatment liquid (1), which comprises from 10 to 10,000 ppm of tin ions and has a pH of 1.0 or greater, and subjecting the metal material that has undergone surface treatment with the treatment liquid (1) to an additional chemical conversion treatment using a treatment liquid (2), which comprises zirconium ions and/or titanium ions.

    摘要翻译: 一种表面处理金属材料的制造方法,其特征在于,包括:使用处理液(1)对金属材料进行表面处理,所述处理液包含10〜10000ppm的锡离子,pH为1.0以上,并对所述金属材料 已经用处理液(1)进行表面处理,使用包含锆离子和/或钛离子的处理液(2)进行附加的化学转化处理。

    Process for activating a metal surface for conversion coating
    8.
    发明授权
    Process for activating a metal surface for conversion coating 失效
    用于激活用于转化涂层的金属表面的方法

    公开(公告)号:US5776265A

    公开(公告)日:1998-07-07

    申请号:US624623

    申请日:1996-04-26

    IPC分类号: C23C22/80

    CPC分类号: C23C22/80

    摘要: The invention is a process for applying a phosphate coating to a metal substrate in which the metal substrate is contacted with an aqueous activating bath before the phosphate coating is applied. The improved process is obtained by applying ultrasonic vibration energy to the aqueous activating bath. The ultrasonic energy can be applied to the aqueous activating bath when the aqueous activating bath is in contact with the metal substrate or when the metal substrate is not in contact with the aqueous activating bath.

    摘要翻译: PCT No.PCT / US93 / 10243 Sec。 371日期:1996年4月26日 102(e)日期1996年4月26日PCT提交1993年10月26日PCT公布。 出版物WO95 / 12011 日期1995年5月4日本发明是在施加磷酸盐涂层之前将磷酸盐涂层施加到金属基底上的方法,其中金属基底与水性活化浴接触。 通过将超声波振动能量施加到水性活化浴来获得改进的方法。 当水性活化浴与金属基底接触时或当金属基底不与水性活化浴接触时,超声能量可以施加到水性活化浴。

    Rapidly dissolving and storage stable titanium phosphate containing
activating composition
    9.
    发明授权
    Rapidly dissolving and storage stable titanium phosphate containing activating composition 失效
    快速溶解和储存稳定的含磷酸钛的活化组合物

    公开(公告)号:US5326408A

    公开(公告)日:1994-07-05

    申请号:US77473

    申请日:1993-06-15

    申请人: Gerald J. Cormier

    发明人: Gerald J. Cormier

    CPC分类号: C23C22/80

    摘要: An otherwise conventional Jernstedt salt dispersion for activating metal surfaces to improve the quality of subsequently deposited phosphate conversion coatings on the activated metal surface is stabilized against deterioration in storage for at least six months by utilizing in the dispersion a mixture of sodium and potassium salts, preferably condensed phosphate salts, in such amounts that the ratio of potassium to titanium is within the range from 8.0:1.0 to 40:1.0 and the ratio of potassium to sodium is within the range from 0.9:1.0 to about 2.5:1.0.

    摘要翻译: 用于活化金属表面以改善随后沉积的磷酸盐转化涂层在活化金属表面上的质量的另外常规的杰恩斯台德盐分散体通过在分散体中使用钠盐和钾盐的混合物而优选地储存至少六个月,以防止其劣化 缩合磷酸盐,其量使得钾与钛的比率在8.0:1.0至40:1.0的范围内,并且钾与钠的比率在0.9:1.0至约2.5:1.0的范围内。

    Compositions and process for metal treatment
    10.
    发明授权
    Compositions and process for metal treatment 失效
    金属处理的组成和工艺

    公开(公告)号:US5112395A

    公开(公告)日:1992-05-12

    申请号:US674260

    申请日:1991-03-25

    申请人: Toan M. Ngo

    发明人: Toan M. Ngo

    IPC分类号: C23C22/80

    CPC分类号: C23C22/80

    摘要: Compositions and process for activating metal surfaces prior to coating with zinc phosphate are disclosed. A Jernstedt salt concentrate is provided which can be employed to prepare Jernstedt salt baths of the type desired by combining the concentrate with additional alkali metal phosphate. Improved activation of metal surfaces are achieved by incorporating a chloride ion producing compound in the activating bath.

    摘要翻译: 公开了在用磷酸锌包被之前活化金属表面的组合物和方法。 提供了一种Jernstedt盐浓缩物,其可用于通过将浓缩物与另外的碱金属磷酸盐组合来制备所需类型的Jernstedt盐浴。 通过在活化浴中加入氯化物离子产生化合物来实现金属表面的活化。