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1. 发明申请

WO2011081392A4 ZINC-PLATED STEEL SHEET FOR HOT PRESSING HAVING OUTSTANDING SURFACE CHARACTERISTICS, HOT-PRESSED MOULDED PARTS OBTAINED USING THE SAME, AND A PRODUCTION METHOD FOR THE SAME 审中-公开
标题翻译：用于具有优异表面特性的热压的镀锌钢板，使用其的热压成型件及其制造方法
公开(公告)号：WO2011081392A4
公开(公告)日：2012-01-19
申请号：PCT/KR2010009392
申请日：2010-12-28
申请人： POSCO , SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
发明人： SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
IPC分类号： C23C2/06 , C22C38/00 , C23C2/02 , C23C2/28
CPC分类号： C23C2/28 , C22C38/001 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/40 , C23C8/10 , Y10T428/12799 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/12951 , Y10T428/12958
摘要： In one aspect of the present invention, provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a surface diffusion layer of a metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, within a depth of 1 µm from the surface; an aluminium-rich layer containing at least 30 wt.% of aluminium formed on the surface diffusion layer of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; and a zinc plating layer formed on the aluminium-rich layer; wherein annealing oxides having a mean thickness of no more than 150 nm are distributed in a non-continuous fashion between the surface diffusion layer and the aluminium-rich layer, and there is a content of at least 0.1 wt.% of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, within a depth of 1 µm from the surface of the steel foundation plate. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment such that the melt temperature of the zinc plating layer is increased within a short time, thereby making it possible to prevent deterioration of the plating layer and to minimise the occurrence of internal oxides formed after hot press moulding. Also, according to another aspect of the present invention, an oxide layer able to prevent deterioration of the zinc plating layer is formed on the surface of the plating layer during hot press heating, and a three element phase of Zn, Fe and the metal is formed in the plating layer such that the zinc plating layer can be kept stable, a good surface condition is ensured and the phosphatability is outstanding, the plating properties during electrodeposition plating and film adhesion can be ensured even without carrying out a separate phosphating process, and workability can be improved as cracking in the steel foundation plate during hot press moulding is prevented.
摘要翻译：在本发明的一个方面，提供了一种具有优异表面特性的用于热压的镀锌钢板，包括：钢基础板，其包括金属的表面扩散层，其每摩尔氧的吉布斯自由能降低在距离表面1μm的深度内氧化小于Cr，在金属的表面扩散层上形成含有至少30重量％的铝的富铝层，其中氧化期间每摩尔氧的吉布斯自由能降低小于Cr; 以及形成在富铝层上的镀锌层; 其中平均厚度不超过150nm的退火氧化物以非连续的方式分布在表面扩散层和富铝层之间，并且其含量至少为其重量的0.1重量％在氧化期间每摩尔氧的吉布斯自由能降低小于Cr的距离，距离钢基板的表面1μm以下。以这种方式，在退火之前将对氧的亲和力低的金属涂覆到有效厚度，因此在钢板表面产生退火氧化物，并形成均匀的镀锌层，并且合金化在加压热处理中促进镀锌层，使得镀锌层的熔融温度在短时间内增加，从而可以防止镀层的劣化，并使热镀后形成的内部氧化物的发生最小化压模。此外，根据本发明的另一方面，在热压加热期间，在镀层的表面上形成能够防止镀锌层劣化的氧化物层，Zn，Fe和金属的三元相为形成在镀层中，使得镀锌层可以保持稳定，良好的表面状态得到确保并且磷酸盐性突出，即使不进行单独的磷化工艺，也可以确保电沉积电镀和膜粘附期间的电镀性能，可以提高加工性，因为防止热压成型时的钢基板的龟裂。

2. 发明申请

WO2011081392A2 ZINC-PLATED STEEL SHEET FOR HOT PRESSING HAVING OUTSTANDING SURFACE CHARACTERISTICS, HOT-PRESSED MOULDED PARTS OBTAINED USING THE SAME, AND A PRODUCTION METHOD FOR THE SAME 审中-公开
公开(公告)号：WO2011081392A2
公开(公告)日：2011-07-07
申请号：PCT/KR2010009392
申请日：2010-12-28
申请人： POSCO , SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
发明人： SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
IPC分类号： C23C2/06 , C22C38/00 , C23C2/02 , C23C2/28
CPC分类号： C23C2/28 , C22C38/001 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/40 , C23C8/10 , Y10T428/12799 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/12951 , Y10T428/12958
摘要： In one aspect of the present invention, provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a surface diffusion layer of a metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, within a depth of 1 µm from the surface; an aluminium-rich layer containing at least 30 wt.% of aluminium formed on the surface diffusion layer of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; and a zinc plating layer formed on the aluminium-rich layer; wherein annealing oxides having a mean thickness of no more than 150 nm are distributed in a non-continuous fashion between the surface diffusion layer and the aluminium-rich layer, and there is a content of at least 0.1 wt.% of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, within a depth of 1 µm from the surface of the steel foundation plate. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment such that the melt temperature of the zinc plating layer is increased within a short time, thereby making it possible to prevent deterioration of the plating layer and to minimise the occurrence of internal oxides formed after hot press moulding. Also, according to another aspect of the present invention, an oxide layer able to prevent deterioration of the zinc plating layer is formed on the surface of the plating layer during hot press heating, and a three element phase of Zn, Fe and the metal is formed in the plating layer such that the zinc plating layer can be kept stable, a good surface condition is ensured and the phosphatability is outstanding, the plating properties during electrodeposition plating and film adhesion can be ensured even without carrying out a separate phosphating process, and workability can be improved as cracking in the steel foundation plate during hot press moulding is prevented.

3. 发明申请

WO2011081392A3 ZINC-PLATED STEEL SHEET FOR HOT PRESSING HAVING OUTSTANDING SURFACE CHARACTERISTICS, HOT-PRESSED MOULDED PARTS OBTAINED USING THE SAME, AND A PRODUCTION METHOD FOR THE SAME 审中-公开
标题翻译：用于具有出色表面特性的热压的镀锌钢板，使用其获得的热压成型部件及其制造方法
公开(公告)号：WO2011081392A3
公开(公告)日：2011-12-01
申请号：PCT/KR2010009392
申请日：2010-12-28
申请人： POSCO , SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
发明人： SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
IPC分类号： C23C2/06 , C22C38/00 , C23C2/02 , C23C2/28
CPC分类号： C23C2/28 , C22C38/001 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/40 , C23C8/10 , Y10T428/12799 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/12951 , Y10T428/12958
摘要： In one aspect of the present invention, provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a surface diffusion layer of a metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, within a depth of 1 µm from the surface; an aluminium-rich layer containing at least 30 wt.% of aluminium formed on the surface diffusion layer of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; and a zinc plating layer formed on the aluminium-rich layer; wherein annealing oxides having a mean thickness of no more than 150 nm are distributed in a non-continuous fashion between the surface diffusion layer and the aluminium-rich layer, and there is a content of at least 0.1 wt.% of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, within a depth of 1 µm from the surface of the steel foundation plate. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment such that the melt temperature of the zinc plating layer is increased within a short time, thereby making it possible to prevent deterioration of the plating layer and to minimise the occurrence of internal oxides formed after hot press moulding. Also, according to another aspect of the present invention, an oxide layer able to prevent deterioration of the zinc plating layer is formed on the surface of the plating layer during hot press heating, and a three element phase of Zn, Fe and the metal is formed in the plating layer such that the zinc plating layer can be kept stable, a good surface condition is ensured and the phosphatability is outstanding, the plating properties during electrodeposition plating and film adhesion can be ensured even without carrying out a separate phosphating process, and workability can be improved as cracking in the steel foundation plate during hot press moulding is prevented.
摘要翻译：在本发明的一个方面中，提供了一种具有优异表面特性的用于热压的镀锌钢板，其包括：钢基础板，其包括金属的表面扩散层，其中在每个摩尔氧期间吉布斯自由能降低在离表面1μm的深度内氧化比Cr的氧化少; 在金属的表面扩散层上形成的含有至少30重量％铝的富铝层，其中在氧化过程中每摩尔氧的吉布斯自由能降低小于Cr的摩尔数; 以及在富铝层上形成的镀锌层; 其中平均厚度不超过150nm的退火氧化物以不连续的方式分布在表面扩散层和富铝层之间，并且其中金属的含量至少为0.1重量％在距离钢基板表面1μm的深度内，氧化期间每摩尔氧的Gibbs自由能降低小于Cr的Gibbs自由能降低。这样，在退火之前将对氧的亲和力低的金属涂覆成有效厚度，从而抑制了钢板表面处的退火氧化物的产生，并形成了均匀的镀锌层，并且合金化了在压制加工热处理期间促进镀锌层，使得锌镀层的熔融温度在短时间内增加，由此使得可以防止镀层的劣化并且使热后形成的内部氧化物的发生最小化压模成型。此外，根据本发明的另一方面，在热压加热过程中，在镀层的表面上形成能够防止镀锌层劣化的氧化物层，并且Zn，Fe和金属的三元素相为形成在镀层中，使得锌镀层能够保持稳定，确保良好的表面条件，并且可磷化性优异，即使不进行单独的磷化处理也能确保电沉积镀覆和膜粘合期间的镀覆性能，并且防止了在热压模制过程中钢基板的开裂，可以提高可操作性。

4. 发明申请

WO2012091310A2 HOT DIP PLATED STEEL SHEET HAVING EXCELLENT PLATING ADHESIVENESS AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：具有优异镀层粘附性的热浸镀钢板及其制造方法
公开(公告)号：WO2012091310A2
公开(公告)日：2012-07-05
申请号：PCT/KR2011009361
申请日：2011-12-05
申请人： POSCO , PARK RHO-BUM , KIM JONG-SANG , PARK JOONG-CHUL , LEE YOUNG-RA , YOO HONG-JONG , SEON PAN-WOO , HAN SANG-KUG
发明人： PARK RHO-BUM , KIM JONG-SANG , PARK JOONG-CHUL , LEE YOUNG-RA , YOO HONG-JONG , SEON PAN-WOO , HAN SANG-KUG
IPC分类号： C23C2/04 , C21D1/68 , C23C2/28
CPC分类号： C23C2/02 , C21D1/32 , C21D1/52 , C21D1/68 , C21D1/74 , C23C2/04 , C23C2/28 , Y10T428/1266 , Y10T428/12667
摘要： Provided is a hot dip plated steel sheet used in automotive materials and a method of manufacturing the same, and more particularly, to a hot dip plated steel sheet having excellent platability and plating adhesiveness in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and a method of manufacturing the same. According to the present invention, a hot dip plated steel sheet having excellent platability and plating adhesiveness is provided, in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and thus, limitations in added amounts of silicon (Si), manganese (Mn), or aluminum (Al) may be mitigated. Therefore, development of new steels may be accelerated.
摘要翻译：本发明提供一种在汽车用材料中使用的热浸镀敷钢板及其制造方法，特别涉及在表面形成含有形成氧化物的合金元素的钢板的镀敷性和镀敷密合性优异的热浸镀敷钢板使用高温下的钢板作为基底钢板及其制造方法。根据本发明，提供一种具有优异的镀敷性和镀敷粘合性的热浸镀覆钢板，其中含有在钢板表面上高温形成氧化物的合金元素的钢板被用作底层钢板，并且因此可以减少硅（Si），锰（Mn）或铝（Al）的添加量的限制。因此，新型钢材的开发可能会加速。

5. 发明专利

ES2876258T3 Partes prensadas en caliente con chapadas con zinc y procedimiento de producción de las mismas 未知
公开(公告)号：ES2876258T3
公开(公告)日：2021-11-12
申请号：ES10841224
申请日：2010-12-28
申请人： POSCO
发明人： SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
IPC分类号： C23C8/10 , C22C38/00 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
摘要： Una parte prensada en caliente que comprende: una lámina de acero base; una capa de chapado con zinc que incluye una fase Fe-Zn que tiene un metal, en el que una cantidad reducida de energía libre de Gibbs para un mol de oxígeno durante una reacción de oxidación es menor que la del Cr, disuelta en una cantidad de 0,008 % en peso o más conformada en la lámina de acero base; y una capa de óxido que tiene un intervalo de espesor promedio de 0,01 μm a 5 μm conformada sobre la capa de chapado con zinc, en la que la capa de óxido comprende ZnO y comprende de 0,01 % en peso a 50 % en peso de uno o más óxidos seleccionados del grupo que consiste en MnO, SiO2 y Al2O3, en la que la capa de óxido comprende una capa de recubrimiento continuo que tiene un intervalo de espesor promedio de 10 nm y 300 nm y conformada por uno o más óxidos seleccionados del grupo conformado por SiO2 y Al2O3, en la que se conforma un óxido que incluye ZnO y MnO en la capa de recubrimiento continuo y un contenido de MnO menor que el de ZnO, y en el que la lámina de acero base comprende de 0,1 % en peso a 0,4 % en peso de C, 2,0 % en peso o menos, excluyendo 0 % en peso, de Si, 0,1 % en peso a 4,0 % en peso de Mn, opcionalmente uno o más elementos seleccionados del grupo que consiste en 0,001 % a 0,02 % de N, 0,0001 % a 0.01 % de B, 0,001 % as 0,1 % de Ti, 0,001 % a 0,1 % de Nb, 0,001 % a 0,1 % de V, 0,001 % a 1,0 % de Cr, 0,001 % a 1,0 % de Mo, 0,001 % a 0,1 % de Sb, 0,001 % a0,3 % de W y Fe, así como impurezas inevitables como un restante.

6. 发明专利

JP2014221943A 表面特性に優れた熱間プレス用亜鉛めっき鋼板並びにこれを利用した熱間プレス成形部品及びその製造方法有权
标题翻译：用于表面特性优异的热压加工钢板，热轧钢板的热压成型及热压成型件的生产方法
公开(公告)号：JP2014221943A
公开(公告)日：2014-11-27
申请号：JP2014106911
申请日：2014-05-23
申请人：ポスコ , Posco
发明人： SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
IPC分类号： C23C2/06 , B21D22/20 , C21D1/18 , C21D9/00 , C22C18/04 , C22C38/00 , C23C2/28 , C23C2/40
CPC分类号： C23C2/28 , C22C38/001 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/40 , C23C8/10 , Y10T428/12799 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/12951 , Y10T428/12958
摘要：【課題】熱間プレス成形時の亜鉛めっき層の劣化を防止し、めっき層の表面に形成される酸化物の発生を最小化することができる熱間プレス用亜鉛めっき鋼板の提供。【解決手段】表面から深さ1μm以内に、酸化反応時に酸素1モール当たりのギブス自由エネルギー減少量がCrより小さい金属の表面拡散層を含む素地鋼板と、上記酸化反応時に酸素1モール当たりのギブス自由エネルギー減少量がCrより小さい金属の表面拡散層上に形成されたAlを30重量%以上含むAl濃化層と、上記Al濃化層上に形成された亜鉛めっき層を含み、上記表面拡散層と上記Al濃化層の間には平均厚さが150nm以下の焼鈍酸化物が不連続的に分布し、酸化反応時にギブス自由エネルギー減少量がCrより小さい金属の含量が0.1重量%以上である表面特性に優れた熱間プレス用亜鉛めっき鋼板で、熱間プレス成形後に形成された内部酸化物の発生を最小化することができる。【選択図】図7
摘要翻译：要解决的问题：提供一种用于热压的镀锌钢板，其防止热压成型期间的镀锌层的劣化，并最小化在镀层的表面上形成的氧化物的产生。溶液：用于热压的镀锌钢板包括：一种基板钢板，其特征在于，在表面扩散层的表面扩散层的表面扩散层比氧化反应时的Cr比较少，比氧化反应中的每摩尔氧的吉布斯自由能的降低比表面1μm以下。形成在金属的表面扩散层上的高Al浓度层，其比氧化反应中每摩尔氧的吉布斯自由能的降低比Cr低，含有30重量％以上的Al; 以及形成在高Al浓度层上的镀锌层。在表面扩散层和高Al浓度层之间，平均厚度为150nm以下的退火氧化物不连续地分布，氧化反应中的吉布斯自由能的减少比金属Cr的含量小于Cr为0.1 重量％以上。用于热压的镀锌钢板具有优异的表面特性，并且可以最小化热压成型后形成的内部氧化物的发生。

7. 发明公开

EP2798094A4 HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT PLATING SURFACE QUALITY AND ADHESION, AND METHOD OF MANUFACTURING THE SAME 有权转让
标题翻译：随着对生产优秀PLATTIERUNGSOBERFLÄCHENQUALITÄT，负债的加工高强度热浸钢板
公开(公告)号：EP2798094A4
公开(公告)日：2016-05-25
申请号：EP12862705
申请日：2012-12-27
申请人： POSCO
发明人： KIM MYUNG-SOO , KIM JONG-SANG , KIM YOUNG-HA , PARK JOONG-CHUL
IPC分类号： C23C2/02 , B32B15/01 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/00 , C25D3/20 , C25D5/48 , C25D7/06
CPC分类号： C23C2/02 , B32B15/011 , B32B15/013 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/322 , C23C28/3225 , C23C28/345 , C23C28/36 , C25D3/20 , C25D5/48 , C25D7/0614 , Y10T428/12799
摘要： Provided is a method of manufacturing a hot-dip galvanized steel sheet. According to an aspect of the present invention, the method may include preparing a base steel sheet, forming a iron (Fe)-plated layer on the prepared base steel sheet, oxidation heating the steel sheet having the Fe-plated layer formed thereon at a temperature ranging from 600° C. to 800° C., maintaining the heated steel sheet at a temperature ranging from 750° C. to 900° C. for 5 seconds or more in a reducing atmosphere with a dew point of between −30° C. to 5° C. including 20 ppm or less of oxygen, 1 vol % to 20 vol % of H2, and N2 as well as unavoidable gases as a remainder, cooling the maintained steel sheet, and plating the cooled steel sheet by dipping in a hot-dip galvanizing bath.

8. 发明公开

EP2659016A4 HOT DIP PLATED STEEL SHEET HAVING EXCELLENT PLATING ADHESIVENESS AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：根据上述制造具有优异的化学和工艺熔炼潜水涂层钢板
公开(公告)号：EP2659016A4
公开(公告)日：2015-04-15
申请号：EP11853317
申请日：2011-12-05
申请人： POSCO
发明人： PARK RHO-BUM , KIM JONG-SANG , PARK JOONG-CHUL , LEE YOUNG-RA , YOO HONG-JONG , SEON PAN-WOO , HAN SANG-KUG
IPC分类号： C23C2/04 , C21D1/52 , C21D1/68 , C21D1/74 , C23C2/02 , C23C2/28
CPC分类号： C23C2/02 , C21D1/32 , C21D1/52 , C21D1/68 , C21D1/74 , C23C2/04 , C23C2/28 , Y10T428/1266 , Y10T428/12667

9. 发明公开

EP2520686A4 ZINC-PLATED STEEL SHEET FOR HOT PRESSING HAVING OUTSTANDING SURFACE CHARACTERISTICS, HOT-PRESSED MOULDED PARTS OBTAINED USING THE SAME, AND A PRODUCTION METHOD FOR THE SAME 有权转让
标题翻译： VERZINKTES STAHLBLECH ZUR HEISSPRESSUNG MIT AUSGEZEICHNETENOBERFLÄCHENEIGENSCHAFTEN，DAMIT ERHALTENE HEISSGEPRESSTE FORMTEILE UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2520686A4
公开(公告)日：2017-08-30
申请号：EP10841224
申请日：2010-12-28
申请人： POSCO
发明人： SOHN IL-RYOUNG , KIM JONG-SANG , PARK JOONG-CHUL , CHO YEOL-RAE , OH JIN-KEUN , CHO HAN-GU , CHUNG BONG-HOON , LEE JONG-SEOG
IPC分类号： C23C8/10 , C22C38/00 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
CPC分类号： C23C2/28 , C22C38/001 , C22C38/04 , C23C2/02 , C23C2/06 , C23C2/40 , C23C8/10 , Y10T428/12799 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/12951 , Y10T428/12958
摘要： In one aspect of the present invention, provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a metal surface diffusion layer of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, to a depth of 1 µm from the surface; an aluminium-rich layer containing at least 30 wt.% of aluminium formed on the surface diffusion layer of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; and a zinc plating layer formed on the aluminium-rich layer; wherein annealing oxides having a mean thickness of no more than 150 nm are distributed in a non-continuous fashion between the surface diffusion layer and the aluminium-rich layer, and there is a content of at least 0.1 wt.% of the metal of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, to a depth of 1 µm from the surface of the steel foundation plate. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment such that the melting temperature of the zinc plating layer is increased within a short time, thereby making it possible to prevent deterioration of the plating layer and to minimise the occurrence of internal oxides formed after hot press moulding. Also, according to another aspect of the present invention, an oxide layer able to prevent deterioration of the zinc plating layer is formed on the surface of the plating layer during hot press heating, and a three element phase of Zn, Fe and the metal is formed in the plating layer such that the zinc plating layer can be kept stable, good surface conditions are ensured and the phosphatability is outstanding, the plating properties during electrodeposition plating and film adhesion can be ensured even without carrying out a separate phosphating process, and workability can be improved as cracking in the steel foundation plate during hot press moulding is prevented.
摘要翻译：在本发明的一个方面中，提供具有突出表面特性的用于热压的镀锌钢板，其包括：钢基础板，其包含金属表面扩散层，其中氧化期间每摩尔氧的吉布斯自由能下降是小于Cr的深度，距离表面1μm的深度; 在金属的表面扩散层上形成的含有至少30重量％铝的富铝层，其中在氧化过程中每摩尔氧的吉布斯自由能降低小于Cr的摩尔数; 以及在富铝层上形成的镀锌层; 其中平均厚度不超过150nm的退火氧化物以不连续的方式分布在表面扩散层和富铝层之间，并且其中金属的含量至少为0.1重量％氧化期间每摩尔氧的吉布斯自由能降低小于Cr的自由能降低至距钢基板表面1μm的深度。这样，在退火之前将对氧的亲和力低的金属涂覆成有效厚度，从而抑制了钢板表面处的退火氧化物的产生，并形成了均匀的镀锌层，并且合金化了在压制加工热处理期间促进镀锌层，使得镀锌层的熔化温度在短时间内增加，由此使得能够防止镀层的劣化并且使热后形成的内部氧化物的发生最小化压模成型。此外，根据本发明的另一方面，在热压加热过程中，在镀层的表面上形成能够防止镀锌层劣化的氧化物层，并且Zn，Fe和金属的三元素相为形成在镀层中，使得锌镀层能够保持稳定，确保良好的表面条件，并且可磷化性优异，即使不进行单独的磷化处理也可以确保电沉积镀覆和膜附着期间的镀覆性能，并且可加工性可以防止热压成型时钢基板的开裂。

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