公开(公告)号：US08992704B2

公开(公告)日：2015-03-31

申请号：US12737398

申请日：2009-07-13

申请人： Jun Maki ,  Masayuki Abe ,  Kazuhisa Kusumi ,  Yasushi Tsukano

发明人： Jun Maki ,  Masayuki Abe ,  Kazuhisa Kusumi ,  Yasushi Tsukano

IPC分类号： C23C2/12 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/28 ,  C23C26/00 ,  C21D1/673

CPC分类号： C23C2/28 ,  C21D1/673 ,  C21D8/0205 ,  C21D8/0278 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/12 ,  C23C26/00

摘要： The present invention solves the problem of melting of Al in heating before hot-stamping, which had been a problem in the past in applying hot-stamping to Al-plated steel sheet, and provides Al-plated steel sheet for hot-stamping and a method of hot-stamping using that Al-plated steel sheet to solve the problem of delayed fracture due to residual hydrogen, and, furthermore, a method of a rapid heating hot-stamping using that Al-plated steel sheet.The Al-plated steel sheet of the present invention is produced by annealing the Al-plated steel sheet as coiled in a box-anneal furnace for the time and at the temperature indicated in FIG. 5, and alloying of a plated Al and a steel sheet.Further, a method of rapid heating hot-stamping in the present invention is characterized by cutting out a stamping blank of an Al-plated steel sheet, and heating that blank in heating before hot-stamping by an average temperature with a rising rate of 40° C./sec or more and a time of exposure to an environment of 700° C. or more of 20 seconds or less, and then hot-stamping it.

摘要翻译： 本发明解决了在热冲压之前的加热中熔化Al的问题，这在过去对镀铝钢板进行热冲压时是一个问题，并提供用于热冲压的镀铝钢板 使用该镀覆钢板的热冲压方法来解决由于残留氢而导致的延迟断裂的问题，此外，使用该镀铝钢板进行快速加热热冲压的方法。 本发明的镀覆钢板是通过将钢板退火炉内的镀铝钢板退火一段时间并在图1所示的温度下进行的。 5，以及电镀铝和钢板的合金化。 此外，本发明的快速加热热冲压法的特征在于，切割镀铝钢板的冲压坯料，并且在热冲压之前加热坯料以平均温度以40的上升速率加热 ℃或更高，暴露于700℃以上20秒以下的环境的时间，然后热烫。

公开(公告)号：US20110174418A1

公开(公告)日：2011-07-21

申请号：US12737398

申请日：2009-07-13

申请人： Jun Maki ,  Masayuki Abe ,  Kazuhisa Kusumi ,  Yasushi Tsukano

发明人： Jun Maki ,  Masayuki Abe ,  Kazuhisa Kusumi ,  Yasushi Tsukano

IPC分类号： C21D8/02 ,  B21D37/16 ,  C21D6/00 ,  C21D1/26 ,  B32B15/01 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18

CPC分类号： C23C2/28 ,  C21D1/673 ,  C21D8/0205 ,  C21D8/0278 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/12 ,  C23C26/00

摘要： The present invention solves the problem of melting of Al in heating before hot-stamping, which had been a problem in the past in applying hot-stamping to Al-plated steel sheet, and provides Al-plated steel sheet for hot-stamping and a method of hot-stamping using that Al-plated steel sheet to solve the problem of delayed fracture due to residual hydrogen, and, furthermore, a method of a rapid heating hot-stamping using that Al-plated steel sheet.The Al-plated steel sheet of the present invention is produced by annealing the Al-plated steel sheet as coiled in a box-anneal furnace for the time and at the temperature indicated in FIG. 5, and alloying of a plated Al and a steel sheet.Further, a method of rapid heating hot-stamping in the present invention is characterized by cutting out a stamping blank of an Al-plated steel sheet, and heating that blank in heating before hot-stamping by an average temperature with a rising rate of 40° C./sec or more and a time of exposure to an environment of 700° C. or more of 20 seconds or less, and then hot-stamping it.

摘要翻译： 本发明解决了在热冲压之前的加热中熔化Al的问题，这在过去对镀铝钢板进行热冲压时是一个问题，并提供用于热冲压的镀铝钢板 使用该镀覆钢板的热冲压方法来解决由于残留氢而导致的延迟断裂的问题，此外，使用该镀铝钢板进行快速加热热冲压的方法。 本发明的镀覆钢板是通过将钢板退火炉内的镀铝钢板退火一段时间并在图1所示的温度下进行的。 5，以及电镀铝和钢板的合金化。 此外，本发明的快速加热热冲压法的特征在于，切割镀铝钢板的冲压坯料，并且在热冲压之前加热坯料以平均温度以40的上升速率加热 ℃或更高，暴露于700℃以上20秒以下的环境的时间，然后热烫。

公开(公告)号：US20140030544A1

公开(公告)日：2014-01-30

申请号：US14008854

申请日：2012-03-30

申请人： Jun Maki ,  Kazuhisa Kusumi ,  Masayuki Abe ,  Masao Kurosaki

发明人： Jun Maki ,  Kazuhisa Kusumi ,  Masayuki Abe ,  Masao Kurosaki

IPC分类号： C23C2/12 ,  B21B1/26

CPC分类号： C23C2/12 ,  B21B1/26 ,  C21D1/673 ,  C21D7/13 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  C23C2/02 ,  C23C2/26 ,  C23C2/28 ,  C23C2/34 ,  Y10T428/12611 ,  Y10T428/12757 ,  Y10T428/12951 ,  Y10T428/12972 ,  Y10T428/31678

摘要： A hot stamped high strength part in which the propagation of cracks which form at the plating layer at the time of hot stamping when hot stamping aluminum plated steel sheet is suppressed and the post painting anticorrosion property is excellent even without adding special ingredient elements which suppress formation of cracks in an aluminum plating layer is provided.A hot stamped high strength part which is excellent in post painting anticorrosion property, which hot stamped high strength part has an alloy plating layer which includes an Al—Fe intermetallic compound phase on the surface of the steel sheet, wherein the alloy plating layer is comprised from phases of a plurality of intermetallic compounds, a mean linear intercept length of crystal grains of a phase containing Al: 40 to 65 mass % among the phases of the plurality of intermetallic compounds is 3 to 20 μm, an average value of thickness of the Al—Fe alloy plating layer is 10 to 50 μm, and a ratio of the average value of thickness to the standard deviation of thickness of the Al—Fe alloy plating layer satisfies the following relationship: 0

摘要翻译： 热冲压高强度部件，其中抑制热冲压镀铝钢板时在烫印时在镀层处形成的裂纹的传播，并且即使不添加抑制形成的特殊成分元素，后喷涂抗腐蚀性也优异 提供铝镀层中的裂纹。 热冲压高强度部件具有优良的后喷涂抗腐蚀性的热冲压高强度部件，在钢板表面上具有包含Al-Fe金属间化合物相的合金镀层，其中包含合金镀层 从多个金属间化合物的相中，多个金属间化合物的相中含有Al：40〜65质量％的相的晶粒的平均线性截距长度为3〜20μm，平均值为 Al-Fe合金镀层为10〜50μm，Al-Fe合金镀层的厚度的平均值与厚度的标准偏差的比例满足以下关系：0 <厚度的平均值/ thickness@0.15。

公开(公告)号：US20130340899A1

公开(公告)日：2013-12-26

申请号：US14003881

申请日：2011-03-09

申请人： Kazuhisa Kusumi ,  Yuji Ogawa ,  Masayuki Abe ,  Hidekuni Murakami ,  Kengo Takeda ,  Jun Maki

发明人： Kazuhisa Kusumi ,  Yuji Ogawa ,  Masayuki Abe ,  Hidekuni Murakami ,  Kengo Takeda ,  Jun Maki

IPC分类号： C22C38/22 ,  C22C38/32 ,  C22C38/04 ,  B21B1/22 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/00 ,  C22C38/28 ,  C22C38/14

CPC分类号： C22C38/02 ,  B21B1/22 ,  B21D22/022 ,  B32B15/013 ,  C21D6/005 ,  C21D8/005 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32

摘要： The present invention has as its object the provision of steel sheet for hot stamping use which is excellent in part strength after hot stamping and delayed fracture resistance comprised of large C content high strength steel sheet in which effective hydrogen traps are formed in the steel material.The steel sheet of the present invention solves this problem by forming Fe—Mn-based composite oxides in the steel sheet and trapping hydrogen at the interfaces of the composite oxides and matrix steel and in the voids around the composite oxides.Specifically, it provides steel sheet for hot stamping use which is comprised of chemical ingredients which contain, by mass %, C: 0.05 to 0.40%, Si: 0.02% or less, Mn: 0.1 to 3%, S: 0.02% or less, P: 0.03% or less, Al: 0.005% or less, Ti: 0.01% or less, N: 0.01% or less, one or both of Cr and Mo in a total of 0.005 to 1%, and O: 0.003 to 0.03% and which have a balance of Fe and unavoidable impurities and which contains average diameter 0.1 to 15 μm Fe—Mn-based composite oxide particles dispersed in the steel sheet or furthermore has crushed voids around the composite oxide particles, a method of production of the same, and a method of production of a hot stamped high strength part.

摘要翻译： 本发明的目的是提供一种热冲压用钢板，其特征在于，在钢材中形成有效的氢气阱的大型C含量高强度钢板的热冲压后具有优异的部分强度和延迟断裂性。 本发明的钢板通过在钢板中形成Fe-Mn系复合氧化物并在复合氧化物和基质钢的界面以及复合氧化物周围的空隙中捕获氢来解决这个问题。 具体地说，提供热冲压用钢板，其由以质量％计含有C：0.05〜0.40％，Si：0.02％以下，Mn：0.1〜3％，S：0.02％以下的化学成分构成 ，P：0.03％以下，Al：0.005％以下，Ti：0.01％以下，N：0.01％以下，Cr和Mo中的一种或两种，总计0.005〜1％，O：0.003〜 0.03％，余量由Fe和不可避免的杂质构成，平均直径为0.1〜15μm的Fe-Mn系复合氧化物粒子分散在钢板上，或者还具有复合氧化物粒子周围的破碎空隙。 以及生产热冲压高强度部件的方法。

公开(公告)号：US07842142B1

公开(公告)日：2010-11-30

申请号：US11575344

申请日：2005-09-15

申请人： Kazuhisa Kusumi ,  Hironori Sato ,  Masayuki Abe ,  Nobuhiro Fujita ,  Noriyuki Suzuki ,  Kunio Hayashi ,  Shinya Nakajima ,  Jun Maki ,  Masahiro Oogami ,  Toshiyuki Kanda ,  Manabu Takahashi ,  Yuzo Takahashi

发明人： Kazuhisa Kusumi ,  Hironori Sato ,  Masayuki Abe ,  Nobuhiro Fujita ,  Noriyuki Suzuki ,  Kunio Hayashi ,  Shinya Nakajima ,  Jun Maki ,  Masahiro Oogami ,  Toshiyuki Kanda ,  Manabu Takahashi ,  Yuzo Takahashi

IPC分类号： C21D8/00

CPC分类号： C22C38/04 ,  C21D1/673 ,  C21D1/74 ,  C21D8/0205 ,  C21D9/0068 ,  C21D9/48 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/06 ,  C22C38/18 ,  C22C38/28

摘要： High-strength parts and a method for producing them can be provided, where such parts exhibit hydrogen embrittlement resistance and strength after high-temperature forming. For example, the atmosphere in a heating furnace can contain less than about 10% hydrogen and/or have a dew point of about 30° C. or less. The amount of hydrogen penetrating a steel sheet during heating can thereby be reduced. After forming, quench hardening in a die assembly and post-working can be performed. Post-working can include shearing followed by re-shearing or compression forming; punching with a cutting blade having a continuously reduced base width; punching with a tool having a curved blade and a protrusion at the tip of the cutting blade, where the curved blade may include a shoulder portion of given radius and/or angle; fusion cutting; etc. Tensile residual stresses after punching can be reduced and resistance to hydrogen embrittlement can be improved.

摘要翻译： 可以提供高强度部件及其制造方法，其中这些部件在高温成形后具有耐氢脆性和强度。 例如，加热炉中的气氛可以含有小于约10％的氢气和/或具有约30℃或更低的露点。 从而能够减少加热时穿透钢板的氢的量。 成形后，可以进行模具组装中的淬火硬化和后加工。 后加工可以包括剪切，然后重新剪切或压缩成型; 用具有连续减小的基底宽度的切割刀片冲压; 用具有弯曲刀片的工具和在切割刀片的尖端处的突起进行冲压，其中弯曲刀片可以包括具有给定半径和/或角度的肩部; 融合切割; 冲压后的拉伸残余应力可以降低，并且可以提高耐氢脆性。

公开(公告)号：US20070163685A1

公开(公告)日：2007-07-19

申请号：US11572020

申请日：2005-07-15

申请人： Kazuhisa Kusumi ,  Jun Maki ,  Masayuki Abe ,  Masahiro Ohgami ,  Norihiro Fujita ,  Shinya Nakajima

发明人： Kazuhisa Kusumi ,  Jun Maki ,  Masayuki Abe ,  Masahiro Ohgami ,  Norihiro Fujita ,  Shinya Nakajima

IPC分类号： C21D8/02

CPC分类号： C23C2/26 ,  C21D1/673 ,  C23C2/28 ,  C23C26/00 ,  Y10T428/12757 ,  Y10T428/12799

摘要： The present invention provides a method of hot pressing using hot rolled and cold rolled steel sheet or Al-based plated steel sheet or Zn-based plated steel sheet enabling a strength of at least 1200 MPa to be obtained after high temperature forming and with extremely little possibility of hydrogen embrittlement and such hot pressed parts, that is, a method of hot pressing a high strength automobile parts comprising using steel sheet containing as steel compositions by wt % C:0.05 to 0.5% or steel sheet plated mainly with Al or Zn to produce automobile members by hot pressing during which making the heating temperature before pressing Ac3 or more to 1100° C. or less, making the hydrogen concentration in the heating atmosphere 6 vol % or less, and making the dew point 10° C. or less and such hot pressed parts.

摘要翻译： 本发明提供一种使用热轧冷轧钢板或Al系镀覆钢板或Zn系镀覆钢板进行热压的方法，其能够在高温成形后获得至少1200MPa的强度，并且极少量 氢脆化的可能性和这种热压部件，即将包含以C = 0.05〜0.5％的钢组成的钢板或以Al或Zn为主体的钢板进行热压的高强度汽车部件的方法， 通过热压制造汽车部件，在此温度下使加热温度为3℃以上至1100℃以下，使加热气氛中的氢浓度为6体积％以下， 露点10℃以下，这样的热压部件。

公开(公告)号：US08986849B2

公开(公告)日：2015-03-24

申请号：US14008854

申请日：2012-03-30

申请人： Jun Maki ,  Kazuhisa Kusumi ,  Masayuki Abe ,  Masao Kurosaki

发明人： Jun Maki ,  Kazuhisa Kusumi ,  Masayuki Abe ,  Masao Kurosaki

IPC分类号： C23C2/12 ,  C25D5/10 ,  B32B15/04 ,  B21C23/24 ,  B21B1/26 ,  C21D1/673 ,  C21D7/13 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/26 ,  C23C2/28

CPC分类号： C23C2/12 ,  B21B1/26 ,  C21D1/673 ,  C21D7/13 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  C23C2/02 ,  C23C2/26 ,  C23C2/28 ,  C23C2/34 ,  Y10T428/12611 ,  Y10T428/12757 ,  Y10T428/12951 ,  Y10T428/12972 ,  Y10T428/31678

摘要： A hot stamped high strength part which is excellent in post painting anticorrosion property, which hot stamped high strength part has an alloy plating layer including an Al—Fe intermetallic compound phase on the surface of the steel sheet. The alloy plating layer is comprised from phases of a plurality of intermetallic compounds, a mean linear intercept length of crystal grains of a phase containing Al: 40 to 65 mass % among the phases of the plurality of intermetallic compounds is 3 to 20 μm, an average value of thickness of the Al—Fe alloy plating layer is 10 to 50 μm, and a ratio of the average value of thickness to the standard deviation of thickness of the Al—Fe alloy plating layer satisfies the following relationship: 0

摘要翻译： 热冲压强度高的部件在钢板表面具有包含Al-Fe金属间化合物相的合金镀层，具有优异的后涂防腐性能的热冲压高强度部分。 合金镀层由多个金属间化合物的相构成，多个金属间化合物的相中的含有Al：40〜65质量％的相的晶粒的平均线性截距长度为3〜20μm， Al-Fe合金镀层的平均厚度为10〜50μm，Al-Fe合金镀层的厚度的平均值与厚度的标准偏差的比例满足以下关系：0 <标准偏差 厚度/平均值厚度＆nlE; 0.15。

公开(公告)号：US10344360B2

公开(公告)日：2019-07-09

申请号：US14003881

申请日：2011-03-09

申请人： Kazuhisa Kusumi ,  Yuji Ogawa ,  Masayuki Abe ,  Hidekuni Murakami ,  Kengo Takeda ,  Jun Maki

发明人： Kazuhisa Kusumi ,  Yuji Ogawa ,  Masayuki Abe ,  Hidekuni Murakami ,  Kengo Takeda ,  Jun Maki

IPC分类号： C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/02 ,  B21D22/02 ,  C22C38/00 ,  C22C38/32 ,  B21B1/22 ,  C21D8/00 ,  C22C38/14 ,  C22C38/28 ,  B32B15/01 ,  C22C38/12 ,  C22C38/16 ,  C22C38/24 ,  C22C38/30 ,  C21D6/00 ,  C21D8/02

摘要： The present invention has as its object the provision of steel sheet for hot stamping use which is excellent in part strength after hot stamping and delayed fracture resistance comprised of large C content high strength steel sheet in which effective hydrogen traps are formed in the steel material.The steel sheet of the present invention solves this problem by forming Fe—Mn-based composite oxides in the steel sheet and trapping hydrogen at the interfaces of the composite oxides and matrix steel and in the voids around the composite oxides.Specifically, it provides steel sheet for hot stamping use which is comprised of chemical ingredients which contain, by mass %, C: 0.05 to 0.40%, Si: 0.02% or less, Mn: 0.1 to 3%, S: 0.02% or less, P: 0.03% or less, Al: 0.005% or less, Ti: 0.01% or less, N: 0.01% or less, one or both of Cr and Mo in a total of 0.005 to 1%, and O: 0.003 to 0.03% and which have a balance of Fe and unavoidable impurities and which contains average diameter 0.1 to 15 μm Fe—Mn-based composite oxide particles dispersed in the steel sheet or furthermore has crushed voids around the composite oxide particles, a method of production of the same, and a method of production of a hot stamped high strength part.

公开(公告)号：US07867344B2

公开(公告)日：2011-01-11

申请号：US11572020

申请日：2005-07-15

申请人： Kazuhisa Kusumi ,  Jun Maki ,  Masayuki Abe ,  Masahiro Ohgami ,  Norihiro Fujita ,  Shinya Nakajima

发明人： Kazuhisa Kusumi ,  Jun Maki ,  Masayuki Abe ,  Masahiro Ohgami ,  Norihiro Fujita ,  Shinya Nakajima

IPC分类号： C21D8/02 ,  B32B15/18

CPC分类号： C23C2/26 ,  C21D1/673 ,  C23C2/28 ,  C23C26/00 ,  Y10T428/12757 ,  Y10T428/12799

摘要： A method is proved for hot pressing hot rolled steel sheet, cold rolled steel sheet, Al-based plated steel sheet or Zn-based plated steel sheet, where the hot pressed sheet can exhibit a strength of at least about 1200 Mpa, and my be prevented from exhibiting hydrogen embrittlement. The steel sheet may include between about 0.05 to 0.5 wt % C, and/or it may be plated with an Al-based or Zn-based plating material. The steel sheet may be heating to a temperature greater than an Ac3 temperature and not more than about 1100° C. before pressing. An atmosphere can be provided during heating which contains not more than about 6 vol % of hydrogen and a dew point of not more than about 10° C. The exemplary methods may be used to form high strength parts which may be used, e.g., in automobiles.

摘要翻译： 证明了热压热轧钢板，冷轧钢板，Al系镀钢板或Zn系镀层钢板的热压板的强度至少为约1200Mpa的方法， 防止氢脆化。 钢板可以包括约0.05至0.5重量％的C，和/或其可以镀有Al基或Zn基镀层材料。 在压制之前，钢板可能被加热到大于Ac 3温度且不大于约1100℃的温度。 可以在加热期间提供含有不超过约6体积％氢气和露点不超过约10℃的气氛。示例性方法可用于形成高强度部件，其可以用于例如 汽车

公开(公告)号：US09403343B2

公开(公告)日：2016-08-02

申请号：US14130352

申请日：2011-07-14

申请人： Yasuto Goto ,  Masao Kurosaki ,  Shinichi Yamaguchi ,  Jun Maki

发明人： Yasuto Goto ,  Masao Kurosaki ,  Shinichi Yamaguchi ,  Jun Maki

IPC分类号： B32B15/01 ,  C23C2/26 ,  C23C2/28 ,  C22C21/04 ,  C23C2/12 ,  C22C21/02 ,  C22C21/06 ,  C23C30/00

CPC分类号： C22C21/08 ,  B32B15/012 ,  C22C21/02 ,  C22C21/04 ,  C22C21/06 ,  C23C2/00 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  C23C26/02 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/1275 ,  Y10T428/12757 ,  Y10T428/12764 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/24975 ,  Y10T428/264 ,  Y10T428/265

摘要： The present invention relates to aluminum plated steel sheet which does not require coating after plating and is high in production flexibility enabling application of conventional production processes as they are or exhibits excellent corrosion resistance to flex fuels and further is excellent in appearance and to fuel tanks characterized by being produced using the steel sheet. The Si, Mg, Ca, and Ti ingredients in the aluminum plating layer are defined and the cooling method after hot dip aluminum coating is controlled to make Mg2Si particles with a long axis of 10 μm or less and an aspect ratio of 1 to 3 finely disperse in the plating layer. Due to the Mg2Si particles, it is possible to give an excellent corrosion resistance to flex fuels and suppress the deterioration in appearance due to MgO.

摘要翻译： 本发明涉及电镀后不需要涂层的镀铝钢板，并且制造灵活性高，能够应用现有的生产工艺，或对柔性燃料展现出优异的耐腐蚀性，并且外观优异，燃料箱的特征在于 通过使用钢板制造。 限定铝镀层中的Si，Mg，Ca和Ti成分，并且控制热浸铝涂层之后的冷却方法以使长轴为10μm以下的长宽比为1〜3的Mg2Si粒子 分散在镀层中。 由于Mg 2 Si颗粒，可以赋予柔性燃料优异的耐腐蚀性，并抑制由于MgO导致的外观劣化。