Verfahren zum kleberfreien Glühen von Metallteilen
    15.
    发明公开
    Verfahren zum kleberfreien Glühen von Metallteilen 有权
    Verfahren zum kleberfreienGlühenvon Metallteilen

    公开(公告)号:EP1424402A1

    公开(公告)日:2004-06-02

    申请号:EP03027065.6

    申请日:2003-11-25

    IPC分类号: C21D1/76 C21D1/70

    CPC分类号: C21D1/76 C21D1/70 C21D6/002

    摘要: Die Erfindung betrifft ein Verfahren zum kleberfreien Glühen von Metallteilen, insbesondere von Chrom und Mangan enthaltenden Stählen, in einer Wasserstoff-Wasserdampf-Atmosphäre mit den Phasen Aufheizen, Halten und Abkühlen, bei dem die auf der Öberfläche des Glühguts während der Aufheizphase gebildete, das Zusammenkleben der Glühgutteile verhindernde Oxidschicht während der Abkühlphase erhalten bleibt. Erfindungsgemäß können dadurch, dass der Taupunkt der Wasserstoff-Wasserdampf-Ofenatmosphäre während der Halte- und Abkühlphase erfasst und in Abgleichung mit empirisch ermittelten Sollwerten automatisch geregelt wird, eine saubere zunder-, anlass- und entkohlungsfreie Glühgutoberfläche aufweisende Qualitätserzeugnisse bereitgestellt werden.

    摘要翻译: 退火金属部件,特别是含有铬和锰的钢部件,包括在保温和冷却期间获取氢 - 蒸汽气氛的露点,并通过经验确定的理论值进行调节来自动调节。

    Phosphonic acid compound for eliminating hydrogen absorption during the heat treatment of aluminium
    16.
    发明公开
    Phosphonic acid compound for eliminating hydrogen absorption during the heat treatment of aluminium 审中-公开
    磷酸化合物,以防止铝的热处理过程中氢的吸收

    公开(公告)号:EP1067207A1

    公开(公告)日:2001-01-10

    申请号:EP00114682.8

    申请日:2000-07-07

    申请人: Alcoa Inc.

    IPC分类号: C22F1/02 C22F1/04 C21D1/70

    CPC分类号: C23C22/56

    摘要: A method of controlling bulk absorption of atomic hydrogen and facilitating degassing of hydrogen from aluminum alloy workpieces during heat treatments in furnaces with ambient and/or moisture-laden atmospheres by exposing the surface of the workpieces to a low molecular weight solution or dispersion of an alkyl phosphonic acid, an olefinic phosphonic acid or an aryl phosphonic acid before subjecting the workpieces to heat treatments. The workpieces exposed to the phosphonic acid solution or dispersion are subjected to heat treatment in furnaces having ambient or moisture-laden atmospheres. The solution or dispersion involves chemical species that are deposited onto the aluminum surface from the phosphonic acid solution or dispersion which substantially decrease the amount of atomic hydrogen entering the bulk of the workpieces from their surfaces during heat treatment and, in addition, facilitate removal of atomic and molecular hydrogen from the bulk of the workpieces during heat treatment.

    摘要翻译: 控制原子氢的体吸收,并通过工件的表面暴露至烷基的低分子量溶液或分散体与环境和/或富含水分的气氛炉中的热处理促进由铝合金工件氢的除气的方法 膦酸,对所述工件进行热处理之前膦酸或在芳基膦酸的烯烃。 暴露于膦酸的溶液或分散液中的工件进行热在具有环境温度或充满水分的气氛炉的治疗。 所述溶液或分散体包括化学物种没有被沉积到从膦酸溶液或分散液,其基本上减少进入工件从它们的表面的热处理过程中和本体中,除了氢原子的量的铝表面上,以便于去除的原子 和从在热处理过程中的大部分工件的分子氢。

    Anti-oxidation agent for continuous annealing of stainless steel strip and anti-oxidation method using the same
    20.
    发明公开
    Anti-oxidation agent for continuous annealing of stainless steel strip and anti-oxidation method using the same 失效
    一种方法和装置,用于连续退火过程中减少不锈钢带材的氧化。

    公开(公告)号:EP0466491A2

    公开(公告)日:1992-01-15

    申请号:EP91306318.6

    申请日:1991-07-11

    IPC分类号: C21D1/70

    CPC分类号: C21D1/70

    摘要: An anti-oxidation agent for preventing oxidation of a stainless steel strip during continuous annealing comprising a colloidal inorganic substance which can be crystallized at a temperature not higher than 1300°C at least one compound having a melting point not higher than 1300°C, selected from the group consisting of silicates, borates and phosphates, a dispersion agent, and the balance substantially water. The anti-oxidation agent is applied to the surface of the stainless steel strip. During the annealing, the anti-oxidation agent enhances the heat absorption so that the stainless steel strip temperature is elevated to the annealing temperature in a short time. The anti-oxidation agent on the strip surface forms a film of a fine structure which keeps the strip surface away from oxidizing components of the annealing atmosphere so as to suppress generation of oxide scale. The film is easily separated due to thermal contraction in the course of the cooling after the annealing.

    摘要翻译: 用于连续退火期间防止不锈钢带的氧化,其包含能够在温度不高于1300℃的温度下结晶化的胶体无机物质的抗氧化剂的至少一个具有的熔点不高于1300℃的化合物,选择 选自的硅酸盐,硼酸盐和磷酸盐,分散剂,和余量基本上是水。 抗氧化剂被施加到不锈钢带材的表面上。 在退火过程中,所述抗氧化剂增强吸热所以也不锈钢带材温度被升高到退火温度在很短的时间。 带材表面上的抗氧化剂形成的微细结构其保持所述条带表面从所述退火气氛的氧化性成分远以便抑制产生氧化皮的膜。 电影在退火后的冷却过程中,由于容易地分离到热收缩。