CN101103133B - 用于对高强度钢的带材进行热浸镀的方法 - Google Patents
用于对高强度钢的带材进行热浸镀的方法 Download PDFInfo
- Publication number
- CN101103133B CN101103133B CN2005800467785A CN200580046778A CN101103133B CN 101103133 B CN101103133 B CN 101103133B CN 2005800467785 A CN2005800467785 A CN 2005800467785A CN 200580046778 A CN200580046778 A CN 200580046778A CN 101103133 B CN101103133 B CN 101103133B
- Authority
- CN
- China
- Prior art keywords
- band
- accordance
- temperature
- continuous furnace
- oxide layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 238000003618 dip coating Methods 0.000 title abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- 239000000470 constituent Substances 0.000 claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- 239000011701 zinc Substances 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004411 aluminium Substances 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007669 thermal treatment Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000002829 reductive effect Effects 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000005275 alloying Methods 0.000 claims description 16
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- 238000007598 dipping method Methods 0.000 description 6
- 239000011651 chromium Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000794 TRIP steel Inorganic materials 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
- C23C2/004—Snouts
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
本发明涉及一种用于对高强度钢的带材进行热浸镀的方法，所述钢含有不同的合金成分，对其用锌和/或铝进行热浸镀。为此，带材在连续式加热炉内首先在还原环境内被加热到约650℃的温度，在此温度下，合金成分仅少量地扩散到表面上。其中，通过使带材在一个组合于连续式加热炉内具有氧化环境的反应室内经温度达750℃的非常短暂的热处理，将基本上由纯铁组成的表面转变为氧化铁层。此氧化铁层阻止合金成分在接着的还原环境内高温退火处理时扩散到带材表面上。在还原环境中，氧化铁层转变为纯铁层，在熔池内锌和/或铝最佳附着地被镀敷在此纯铁层上。
Description
技术领域
在汽车车身构造中，为了防腐蚀而采用经表面调质的热轧或冷轧钢板。对这种板材提出了多种多样的要求。它们一方面应能良好变形，而另一方面应有高的强度。通过向铁添加规定的合金成分，如Mn、Si、Al和Cr达到高强度。为了优化这种钢的特性，通常，在熔池内在用锌和/或铝镀层之前要对钢板进行退火，退火处理直接就在镀层处理之前。仅含小份额所述合金成分的钢带材的热浸镀没有疑难问题，而在热浸镀有较高合金份额的钢板时存在困难。在钢板的表面发生镀层的粘附性不足，甚至形成未镀层部位。
背景技术
在现有技术中作了很多尝试，试图克服这些困难。然而至今尚未提出对所述问题的最佳解决办法。
在一种已知的用锌热浸镀钢带材的方法中，要镀层的带材通过直接加热的预热器(DFF＝Direct Fired Furnace，直火式加热炉)。在使用燃气燃烧器时，可以通过改变燃气-空气混合比造成在带材周围环境内更高的氧化潜势。更高的氧势导致带材表面的铁被氧化。在接着的炉段内如此生成的氧化铁层被还原。有目的地调整带材表面的氧化层厚度非常困难。在高带材速度时它比低带材速度时的薄。因此在还原环境内不能唯一性地造成带材表面的确定的特性。这又可能导致镀层在带材表面的粘附问题。
在具有RTF预热器(RTF＝Radiant Tube Furnace，辐射管加热炉)的现代热浸镀生产线内，与上述已知的设备不同，不使用燃气加热的燃烧器。因此不能通过改变燃气-空气混合比进行铁的预氧化。确切地说，在这些设备中，在保护气体环境内进行带材完整的退火处理。然而在具有高合金成分的钢的带材的这种退火处理时，这些合金成分可能扩散到带材表面并在这里形成不可还原的氧化物。这些氧化物妨碍了在熔池内用锌和/或铝令人满意地镀层。
由专利文献已知一些对钢带材用不同镀层材料进行热浸镀的不同方法。
由DE68912243T2已知用铝连续热浸镀钢带材的方法，其中，带材在连续式加热炉内预热。在第一区去除表面污垢。为此，加热炉环境有很高的温度。因为带材以高速通过本区，所以它仅仅被加热至约环境温度的一半。在接着的处于保护气体环境的第二区，带材被加热到镀层材料铝的温度。
由DE69507977T2已知含铬的钢合金带材的两阶段热浸镀方法，在这里，带材在第一阶段退火，以便在带材表面获得铁的富集。接着，带材在非氧化环境中加热到镀层金属的温度。
由JP02285057A已知钢带材镀锌的一种多阶段方法。为此，经事先清洁后的带材在非氧化环境中在约820℃的温度下进行处理。然后，带材在其表面在还原环境中被还原之前，在约400℃至700℃的情况下在弱氧化的环境内进行处理。接着，按普通的方式为冷却到约420℃至500℃的带材镀锌。
发明内容
本发明的目的是，开发一种对高强度钢的带材用锌和/铝进行热浸镀(即熔融浸镀)的方法，借助此方法在RTF设备中生产有最佳调质表面的钢带材。
为实现此目的的解决方案具有下列工艺步骤：
a)将带材在H2含量至少为2％至8％的还原环境内加热到650℃至750℃的温度，在此温度下，合金成分尚未或仅少量地扩散到表面上；
b)通过在一个组合于连续式加热炉内、具有O2含量为0.01％至1％的氧化环境的反应室内，在温度为650℃至750℃的情况下，对带材进行持续1至10秒的热处理，将基本上由纯铁组成的表面转变为氧化铁层；
c)接着，使带材在H2含量为2％至8％的还原环境内通过进一步加热到最大900℃退火，并接着冷却到熔池温度，此时氧化铁层至少在其表面还原为纯铁。
按本发明的方法，在第一个工艺步骤中防止了：加热时大量合金成分扩散到带材表面。理想的是，能完全阻止合金成分向带材表面扩散，当然这在实际上几乎是不可能的。决定性的是，合金成分向表面的扩散受到如此程度的扼制，即，在下一个步骤中能生成有效的氧化铁层，它阻止：在高的退火温度时合金成分继续向表面扩散。这样，在还原环境中退火处理时可以形成纯铁层，它非常好地适用于全面和牢固地粘附锌和/或铝的镀层。
最佳的结果是，使在氧化环境中造成的氧化铁层完全还原为纯铁，因为这样一来镀层还优化了其变形特性及强度特性。
按本发明的一项设计，当在具有氧化环境的区段上处理带材时，测量形成的氧化层厚度，并根据此厚度和取决于带材通过速度的处理时间来调整O2含量，以使氧化层紧接着能完全被还原。通过这种方式，可以使带材的通过速度改变，例如由于故障或干扰，而不至造成热浸镀带材的表面质量的缺陷。
为了在实施本方法时获得良好的结果，生成最大厚度为300nm的氧化层。此外，若带材在氧化前的加热到温度为650℃至750℃的处理持续最多250秒，也能获得好的结果。带材在氧化后的热处理及接着的冷却应持续50秒以上。
作为合金成分，所述高强度钢应含有至少一种选择的下列成分：Mn＞0.5％、Al＞0.2％、Si＞0.1％、Cr＞0.3％。还可以添加其他成分，例如Mo、Ni、V、Ti、Nb和P。
本发明的一个重要特征是，带材无论在加热还是晚些时候退火时在还原环境中的热处理与在氧化环境中的热处理相比持续时间要长许多倍。这导致氧化环境的容积与其余的还原环境容积相比小很多。其优点是，可以对处理过程的变化，尤其通过速度和氧化层生成的改变迅速作出反应。在此意义上，带材的热处理在一连续式加热炉内的还原环境中进行，该连续式加热炉带有一个集成在内的、具有氧化环境的反应室，其中，反应室的容积比连续式加热炉的其余容积小许多倍。
按本发明的方法特别好地适用于热镀锌。但熔池也可以包括锌-铝或者含有硅添加物的铝。无论锌或铝是否单独或共同，它们在熔体中的总份额至少为85％。对此，已知的特征镀层例如是：
Z：99％Zn
ZA：95％Zn+5％Al
AZ：55％Al+43.4％Zn+1.6％Si
AS：89-92％Al+8-11Si
在锌镀层(Z)的情况下，它可以通过热处理(扩散退火)变换为能变形的锌-铁层(电镀层)。
附图说明
下面借助略图详细说明本发明，略图示意表示一种包括连续式加热炉的镀锌设备，图中绘有连续式加热炉在通过时间上的温度曲线。
具体实施方式
含有Mn、Al、Si和Cr或这些合金成分中的几种、但也可能含有另一些合金成分的高强度钢尤其是TRIP钢的热轧或冷轧带材1从带卷2拉出，并通过酸洗槽3和/或另一个用于表面净化的设备4导引。经净化的带材1然后进入连续式加热炉5内。带材1从连续式加热炉5引出，经过一个与环境隔离的闸口6进入带有锌的热浸池7。从那里它经由冷却段8或一热处理装置来到形式上为一个带卷的卷绕站9。与略图所示不同，带材1实际上并非沿直线而是蛇曲状地通过连续式加热炉5，以便在连续式加热炉5可实际使用的长度下能达到足够长的处理时间。
连续式加热炉5分成三个区5a、5b、5c。中区5b构成反应室并相对于第一和末区5a、5c在环境上彼此隔离。它的长度仅为连续式加热炉5总长度的约1/100。出自便于图示的原因，附图在此方面不是按照尺寸比例的。相应于分区不同的长度，带材1经过各区5a、5b、5c的处理时间也是不同的。
在第一区5a中存在还原环境。这种环境的典型组成部分包括2％至8％H2和其余N2。在连续式加热炉5的此区5a中将带材加热到650℃至750℃。在此温度下，所述合金成分仅少量地扩散到带材1的表面。
在中区5b内，基本上仅保持第一区5a的温度。但它的环境含氧。O2的含量在0.01％至1％之间。含量可以调整。它取决于处理时间有多长。若处理时间短则O2的含量高，而在处理时间较长时O2的含量就低。通过该处理在带材表面生成氧化铁层。氧化铁层的厚度可以通过光学装置进行测量。根据测得的厚度和通过速度来调整环境的O2含量。因为中区5b与整个炉长相比很短，所以腔室容积相应地也小。因此，用于改变环境组分的反应时间也短。
在接着的末区5c内实施进一步加热至约900℃，此时带材1退火。该热处理在H2含量为2％至8％以及其余为N2的还原环境中进行。在该退火处理期间，氧化铁层阻止合金成分扩散到带材表面。因为退火处理在还原环境中进行，所以氧化铁层变换成纯铁层。在此，带材1在其朝热浸池7方向的长距离内进一步冷却，从而使它在离开连续式加热炉5时大体有热浸池7的约为480℃之温度。因为带材1离开连续式加热炉5之后在其表面由纯铁组成，所以为热浸池7的锌提供了用于牢固粘附地连接的最佳基础。
Claims (10)
1.用于对高强度钢的带材进行热浸镀的方法，所述钢含有不同的合金成分，该方法在一个包括总共至少85％锌和/或铝的熔池内连续地进行，具有下列工艺步骤：
a)将带材在H2含量为2％至8％的还原环境内加热到650℃至750℃的温度，在此温度下，合金成分尚未或仅少量地扩散到表面上；
b)通过在一个组合于连续式加热炉内、具有O2含量为0.01％至1％的氧化环境的反应室内，在温度为650℃至750℃的情况下，对带材进行持续1至10秒的热处理，将由纯铁组成的表面转变为氧化铁层；
c)接着，使带材在H2含量为2％至8％的还原环境内通过进一步加热到最大900℃退火，并接着冷却到熔池温度，此时氧化铁层至少在其表面还原为纯铁。
2.按照权利要求1所述的方法，其特征为，所生成的氧化铁层完全还原为纯铁。
3.按照权利要求2所述的方法，其特征为，当在具有氧化环境的区段上处理带材时，测量形成的氧化层厚度，并根据此厚度和取决于带材通过速度的处理时间来调整O2含量，以使氧化层紧接着完全被还原。
4.按照权利要求3所述的方法，其特征为，生成最大厚度为300nm的氧化层。
5.按照权利要求1至4之一所述的方法，其特征为，带材在氧化前的加热到温度为650℃至750℃的处理持续最多250秒。
6.按照权利要求1所述的方法，其特征为，带材在氧化后的进一步热处理及接着的冷却持续50秒以上。
7.按照权利要求1所述的方法，其特征为，所述高强度钢含有至少一种选择的下列合金成分：Mn＞0.5％、Al＞0.2％、Si＞0.1％、Cr＞0.3％。
8.按照权利要求1所述的方法，其特征为，带材的热处理在一连续式加热炉内的还原环境中进行，该连续式加热炉带有一个集成在内的、具有氧化环境的反应室，其中，反应室的容积比连续式加热炉的其余容积小许多倍。
9.按照权利要求1所述的方法，其特征为，在热镀锌之后对带材进行热处理。
10.按照权利要求1所述的方法，其特征为，所述钢含有Mn、Al、Si和/或Cr。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004059566A DE102004059566B3 (de) | 2004-12-09 | 2004-12-09 | Verfahren zum Schmelztauchbeschichten eines Bandes aus höherfestem Stahl |
| DE102004059566.6 | 2004-12-09 | ||
| PCT/EP2005/012942 WO2006061151A1 (de) | 2004-12-09 | 2005-12-02 | Verfahren zum schmelztauchbeschichten eines bandes aus höherfestem stahl |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101103133A CN101103133A (zh) | 2008-01-09 |
| CN101103133B true CN101103133B (zh) | 2011-04-20 |
Family
ID=35788686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800467785A Active CN101103133B (zh) | 2004-12-09 | 2005-12-02 | 用于对高强度钢的带材进行热浸镀的方法 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US8652275B2 (zh) |
| EP (1) | EP1819840B1 (zh) |
| JP (1) | JP4918044B2 (zh) |
| KR (1) | KR101303337B1 (zh) |
| CN (1) | CN101103133B (zh) |
| BR (1) | BRPI0518623B1 (zh) |
| CA (1) | CA2590560C (zh) |
| DE (1) | DE102004059566B3 (zh) |
| ES (1) | ES2394326T3 (zh) |
| PL (1) | PL1819840T3 (zh) |
| RU (1) | RU2367714C2 (zh) |
| WO (1) | WO2006061151A1 (zh) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4718381B2 (ja) * | 2006-06-21 | 2011-07-06 | 株式会社神戸製鋼所 | 溶融亜鉛めっき設備 |
| JP4563347B2 (ja) * | 2006-06-21 | 2010-10-13 | 株式会社神戸製鋼所 | 溶融亜鉛めっき用焼鈍炉における鋼板前処理方法 |
| EP2009127A1 (en) | 2007-06-29 | 2008-12-31 | ArcelorMittal France | Process for manufacturing a galvanized or a galvannealed steel sheet by DFF regulation |
| EP2009129A1 (en) * | 2007-06-29 | 2008-12-31 | ArcelorMittal France | Process for manufacturing a galvannealed steel sheet by DFF regulation |
| DE102007061489A1 (de) | 2007-12-20 | 2009-06-25 | Voestalpine Stahl Gmbh | Verfahren zum Herstellen von gehärteten Bauteilen aus härtbarem Stahl und härtbares Stahlband hierfür |
| KR101079472B1 (ko) * | 2008-12-23 | 2011-11-03 | 주식회사 포스코 | 도금표면품질이 우수한 고망간강의 용융아연도금강판의 제조방법 |
| DE102009018577B3 (de) | 2009-04-23 | 2010-07-29 | Thyssenkrupp Steel Europe Ag | Verfahren zum Schmelztauchbeschichten eines 2-35 Gew.-% Mn enthaltenden Stahlflachprodukts und Stahlflachprodukt |
| DE102010037254B4 (de) | 2010-08-31 | 2012-05-24 | Thyssenkrupp Steel Europe Ag | Verfahren zum Schmelztauchbeschichten eines Stahlflachprodukts |
| DE102011050243A1 (de) | 2011-05-10 | 2012-11-15 | Thyssenkrupp Steel Europe Ag | Vorrichtung und Verfahren zum im Durchlauf erfolgenden Behandeln eines Stahlflachprodukts |
| JP5966528B2 (ja) * | 2011-06-07 | 2016-08-10 | Ｊｆｅスチール株式会社 | めっき密着性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
| DE102011051731B4 (de) | 2011-07-11 | 2013-01-24 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung eines durch Schmelztauchbeschichten mit einer metallischen Schutzschicht versehenen Stahlflachprodukts |
| DE102012101018B3 (de) | 2012-02-08 | 2013-03-14 | Thyssenkrupp Nirosta Gmbh | Verfahren zum Schmelztauchbeschichten eines Stahlflachprodukts |
| DE102013105378B3 (de) | 2013-05-24 | 2014-08-28 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung eines durch Schmelztauchbeschichten mit einer metallischen Schutzschicht versehenen Stahlflachprodukts und Durchlaufofen für eine Schmelztauchbeschichtungsanlage |
| MX2016007417A (es) | 2013-12-10 | 2016-10-03 | Arcelormittal | Un metodo para templar hojas de acero. |
| DE102014109943B3 (de) | 2014-07-16 | 2015-11-05 | Thyssenkrupp Ag | Stahlprodukt mit einer Korrosionsschutzbeschichtung aus einer Aluminiumlegierung sowie Verfahren zu dessen Herstellung |
| DE102017208727A1 (de) | 2017-05-23 | 2018-11-29 | Thyssenkrupp Ag | Verbesserung der Kaltumformeignung aluminiumbasierter Beschichtung durch Zulegieren von Erdalkalimetallen |
| DE102018107435A1 (de) | 2017-11-17 | 2019-05-23 | Sms Group Gmbh | Verfahren zur Voroxidation von Bandstahl in einer in einem Ofenraum angeordneten Reaktionskammer |
| KR102010077B1 (ko) | 2017-12-24 | 2019-08-12 | 주식회사 포스코 | 표면품질 및 도금밀착성이 우수한 고강도 용융아연도금강판 및 그 제조방법 |
| EP3511430A1 (de) | 2018-01-12 | 2019-07-17 | SMS Group GmbH | Verfahren für eine kontinuierliche wärmebehandlung eines stahlbands, und anlage zum schmelztauchbeschichten eines stahlbands |
| DE102018102624A1 (de) * | 2018-02-06 | 2019-08-08 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung eines Stahlbandes mit verbesserter Haftung metallischer Schmelztauchüberzüge |
| US11208711B2 (en) * | 2018-11-15 | 2021-12-28 | Psitec Oy | Method and an arrangement for manufacturing a hot dip galvanized rolled high strength steel product |
| DE102020120580A1 (de) | 2020-08-04 | 2022-02-10 | Muhr Und Bender Kg | Verfahren zum herstellen von beschichtetem stahlband, und verfahren zum herstellen eines gehärteten stahlprodukts |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530458A (zh) * | 2003-03-12 | 2004-09-22 | ̹�� | 钢带连续电镀前的氧化控制方法和电镀作业线 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1231478A (zh) | 1968-11-05 | 1971-05-12 | ||
| US3925579A (en) * | 1974-05-24 | 1975-12-09 | Armco Steel Corp | Method of coating low alloy steels |
| US5023113A (en) | 1988-08-29 | 1991-06-11 | Armco Steel Company, L.P. | Hot dip aluminum coated chromium alloy steel |
| JPH02285057A (ja) * | 1989-04-27 | 1990-11-22 | Sumitomo Metal Ind Ltd | 溶融亜鉛めっき用鋼板の連続焼鈍方法 |
| JPH049456A (ja) * | 1990-04-27 | 1992-01-14 | Nisshin Steel Co Ltd | 耐食性に優れた溶融めっき鋼板用素材 |
| JPH05271889A (ja) * | 1992-03-24 | 1993-10-19 | Nippon Steel Corp | 高Ｓｉ含有量高張力亜鉛めっき鋼板 |
| US5447754A (en) * | 1994-04-19 | 1995-09-05 | Armco Inc. | Aluminized steel alloys containing chromium and method for producing same |
| JP3444007B2 (ja) * | 1995-03-10 | 2003-09-08 | Ｊｆｅスチール株式会社 | 高加工性、高強度溶融亜鉛めっき鋼板の製造方法 |
| FR2828888B1 (fr) * | 2001-08-21 | 2003-12-12 | Stein Heurtey | Procede de galvanisation a chaud de bandes metalliques d'aciers a haute resistance |
-
2004
- 2004-12-09 DE DE102004059566A patent/DE102004059566B3/de not_active Expired - Fee Related
-
2005
- 2005-12-02 CA CA2590560A patent/CA2590560C/en not_active Expired - Fee Related
- 2005-12-02 BR BRPI0518623A patent/BRPI0518623B1/pt not_active IP Right Cessation
- 2005-12-02 PL PL05812469T patent/PL1819840T3/pl unknown
- 2005-12-02 KR KR1020077015619A patent/KR101303337B1/ko active IP Right Grant
- 2005-12-02 EP EP05812469A patent/EP1819840B1/de active Active
- 2005-12-02 JP JP2007544784A patent/JP4918044B2/ja not_active Expired - Fee Related
- 2005-12-02 CN CN2005800467785A patent/CN101103133B/zh active Active
- 2005-12-02 RU RU2007125701/02A patent/RU2367714C2/ru not_active IP Right Cessation
- 2005-12-02 WO PCT/EP2005/012942 patent/WO2006061151A1/de active Application Filing
- 2005-12-02 ES ES05812469T patent/ES2394326T3/es active Active
- 2005-12-02 US US11/721,138 patent/US8652275B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530458A (zh) * | 2003-03-12 | 2004-09-22 | ̹�� | 钢带连续电镀前的氧化控制方法和电镀作业线 |
Non-Patent Citations (6)
| Title |
|---|
| JP平2-285057A 1990.11.22 |
| JP昭55-122865A 1980.09.20 |
| JP特开平4-254531A 1992.09.09 |
| JP特开平4-254532A 1992.09.09 |
| JP特开平6-88185A 1994.03.29 |
| JP特开平7-34210A 1995.02.03 |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2367714C2 (ru) | 2009-09-20 |
| RU2007125701A (ru) | 2009-01-20 |
| BRPI0518623A2 (pt) | 2008-12-02 |
| KR20070093415A (ko) | 2007-09-18 |
| US20080308191A1 (en) | 2008-12-18 |
| CA2590560A1 (en) | 2006-06-15 |
| EP1819840B1 (de) | 2012-08-29 |
| WO2006061151A1 (de) | 2006-06-15 |
| BRPI0518623B1 (pt) | 2016-05-17 |
| JP2008523243A (ja) | 2008-07-03 |
| KR101303337B1 (ko) | 2013-09-03 |
| EP1819840A1 (de) | 2007-08-22 |
| CA2590560C (en) | 2012-06-19 |
| US8652275B2 (en) | 2014-02-18 |
| JP4918044B2 (ja) | 2012-04-18 |
| CN101103133A (zh) | 2008-01-09 |
| ES2394326T3 (es) | 2013-01-30 |
| PL1819840T3 (pl) | 2013-01-31 |
| DE102004059566B3 (de) | 2006-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101103133B (zh) | 用于对高强度钢的带材进行热浸镀的方法 | |
| US8636854B2 (en) | Method for melt immersion coating of a flat steel product made of high strength steel | |
| CN102378824B (zh) | 高强度热镀锌钢板及其制造方法 | |
| CN102224269B (zh) | 热浸镀锌钢板及其制造方法 | |
| CN101688284B (zh) | 通过dff调节制造镀锌或锌镀层退火的钢片材的方法 | |
| EP3159420B1 (en) | Method for producing high-strength hot-dipped galvanized steel sheet | |
| KR101624810B1 (ko) | 도금 습윤성 및 도금 밀착성이 우수한 용융 아연 도금층을 구비한 강판과 그 제조 방법 | |
| CN105229193B (zh) | 高强度合金化热浸镀锌钢板的制造方法 | |
| CN102369305A (zh) | 高强度热镀锌钢板及其制造方法 | |
| JP2012514131A (ja) | 鋼板の焼鈍装置、これを含むメッキ鋼板の製造装置及びそれを用いたメッキ鋼板の製造方法 | |
| CN104769146A (zh) | 合金化热浸镀锌钢板及其制造方法 | |
| CN103582717A (zh) | 镀覆密合性优异的高强度热浸镀锌钢板及其制造方法 | |
| JP2004263271A (ja) | 高張力溶融亜鉛めっき鋼板の製造方法 | |
| JP3716718B2 (ja) | 合金化溶融亜鉛めっき鋼板とその製造方法 | |
| US11702729B2 (en) | Method for producing a steel strip with improved bonding of metallic hot-dip coatings | |
| EP3396005B1 (en) | Mn-containing hot-dip galvannealed steel sheet and manufacturing method therefor | |
| EP3428303A1 (en) | Production method for high-strength hot-dip galvanized steel sheet | |
| WO2013042356A1 (ja) | 塗装後耐食性に優れる合金化溶融亜鉛めっき鋼板 | |
| KR101621631B1 (ko) | 도장 후 내식성이 우수한 합금화 용융 아연 도금 강판 | |
| JPH08291379A (ja) | Ｐ添加高張力鋼材の合金化溶融亜鉛めっき方法 | |
| WO1992012271A1 (fr) | Procede pour fabriquer de la tole d'acier allie galvanise a chaud presentant une excellente aptitude au moulage lors du travail de pressage et une excellente resistance a la formation de poudre | |
| JPH0987824A (ja) | 耐パウダリング性にすぐれた合金化溶融亜鉛めっき鋼板 | |
| JPH1017936A (ja) | プレス加工性及びめっき密着性に優れる高強度溶融亜鉛めっき鋼板の製造方法 | |
| JPH0874020A (ja) | 合金化溶融亜鉛めっき鋼板の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |