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1. 发明专利

JP2009138275A Nitriding-treated steel member 有权
标题翻译：硝化处理钢构件
公开(公告)号：JP2009138275A
公开(公告)日：2009-06-25
申请号：JP2009003012
申请日：2009-01-09
申请人： Mazda Motor Corp , Sumitomo Metal Ind Ltd , マツダ株式会社 , 住友金属工業株式会社
发明人： KOJIMA HIROTATSU , ISHII KAZUYA , HANAKAWA KATSUNORI , ISHIDA YASUAKI
IPC分类号： C22C38/00 , C21D1/06 , C21D9/46 , C22C38/32 , C23C8/26 , C23C8/32 , C23C8/38 , C23C8/80
摘要： PROBLEM TO BE SOLVED: To provide a nitriding-treated steel member which has both of high strength and elongation properties.
SOLUTION: The sheet thickness central region in the range from the sheet thickness center to 40% of each sheet thickness toward the sheet surface has an average chemical composition comprising, by mass, ≤0.03% C, 0.001 to 0.5% Si, 0.01 to 0.5% Mn, 0.001 to 0.1% P, ≤0.015% S, 0.001 to 0.5% Al, 0.01 to 0.2% Ti, 0.02 to 0.1% Cr, 0 to 0.05% Nb, 0 to 0.005% B and 0.08 to 0.25% N, and the balance Fe with impurities, and in which the Vickers hardness of the sheet thickness center is ≥150, and further, the number density of coarse iron nitride with the long side of ≥5 μm in the sheet thickness central region is ≤10 pieces per 1×10-
8 m
2 . It is preferable that the thickness of a compound layer formed on the surface is ≤30 μm.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有高强度和伸长性能的氮化处理钢构件。解决方案：从片材厚度中心到每个片材厚度的40％到片材表面的片材厚度中心区域具有平均化学组成，其质量含量为≤0.03％C，0.001至0.5％的Si， 0.01〜0.5％Mn，0.001〜0.1％P，≤0.015％S，0.001〜0.5％Al，0.01〜0.2％Ti，0.02〜0.1％Cr，0〜0.05％Nb，0〜0.005％B和0.08〜0.25 ％N，余量为Fe的杂质，其中板厚中心的维氏硬度≥150，另外，板厚中心区域长边≥5μm的粗氮化铁的数密度为每1×10- 8 m 2 ≤10个。表面上形成的化合物层的厚度优选≤30μm。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2004083931A Strength member for vehicle body, strength member structure for vehicle body and method for producing strength member for vehicle body 有权
公开(公告)号：JP2004083931A
公开(公告)日：2004-03-18
申请号：JP2002242326
申请日：2002-08-22
申请人： Mazda Motor Corp , マツダ株式会社
发明人： HANAKAWA KATSUNORI
IPC分类号： B62D25/04 , B62D21/00 , B62D21/02 , B62D21/15 , B62D25/20 , C21D1/06 , C21D1/18 , C21D9/00 , C23C8/24 , C23C8/48
摘要： PROBLEM TO BE SOLVED: To improve strength even without increasing material quantity etc., and to effectively absorb a colliding energy with a simple structure.
SOLUTION: An extendable front frame 11 formed to have a closed cross sectional shape is subjected to nitriding treatment and is provided with, in the vicinity of its end part at a car compartment side, a quenched part 31 subjected to quenching treatment at 500-700°C. The basic strength of the front frame 11 is thereby improved based on the nitriding treatment. Further, at the same time, the quenched part 31 is highly hardened ( made brittle ) with the quenching treatment and at the initial stage in the collision, the quenched part 31 is made to hardly buckle, and on the other hand, after the initial stage in the collision, based on a lowering in the ductility of the quenched part 31, the front frame 11 is deformed with bending by causing the the quenched part 31 to induce buckling.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004249830A Method of manufacturing vehicle body 审中-公开
公开(公告)号：JP2004249830A
公开(公告)日：2004-09-09
申请号：JP2003042367
申请日：2003-02-20
申请人： Mazda Motor Corp , マツダ株式会社
发明人： HANAKAWA KATSUNORI , ISHIDA YASUAKI , WATANABE TADATOSHI , KATO KIKUO , YAMASHITA KOJIRO
IPC分类号： B62D25/00 , B62D65/00 , C23C8/26
摘要： PROBLEM TO BE SOLVED: To accurately realize an increase in the strength and rigidity, sound insulation, and vibration isolation of a molded body for a vehicle body by using fillers even when a heat treatment is applied to the molded body for the vehicle body after the molded body for the vehicle body is assembled.
SOLUTION: In the assembly of the molded body 6 for the vehicle body, a heat resistant filler 10 having a heat resistance higher than a heat treatment temperature in the heat treatment is set in a vehicle body structure so that the filler 10 is not burned out or deteriorated in the heat treatment. Since the heat resistant filler having the heat resistance higher than the heat treatment temperature in the heat treatment is set in the vehicle body structure, the filler is not burned out nor deteriorated in the heat treatment of the vehicle body structure, and the filler properly remains in the vehicle body structure. Accordingly, even when the heat treatment is applied to the vehicle body structure after the assembly of the vehicle body structure, an increase in the strength and rigidity, sound insulation, and vibration isolation of the vehicle body structure can be properly realized by using the filler.
COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2004183006A Steel for nitriding treatment, nitriding treated steel, and production method therefor 有权
标题翻译：用于硝化处理钢，硝化处理钢及其生产方法
公开(公告)号：JP2004183006A
公开(公告)日：2004-07-02
申请号：JP2002348162
申请日：2002-11-29
申请人： Mazda Motor Corp , Sumitomo Metal Ind Ltd , マツダ株式会社 , 住友金属工業株式会社
发明人： KOJIMA HIROTATSU , MIZUI NAOMITSU , ISHII KAZUYA , HANAKAWA KATSUNORI , ISHIDA YASUAKI
IPC分类号： C23C8/26 , C22C38/00 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide nitriding treated steel in which high strength and elongation properties can be reconciled, steel for nitriding treatment which is suitable as the stock for the nitriding treated steel, and to provide a production method therefor.
SOLUTION: The steel for nitriding treatment has a composition(1) comprising, ≤0.01% C, 0.001 to 0.5% Si, 0.01 to 0.5% Mn, 0.001 to 0.1% P, ≤0.01% S, 0.001 to 0.5% Al, 0.04 to 0.2% Ti, 0 to 0.05% Nb, 0 to 0.005% B, and ≤0.005% N, and the balance Fe with impurities, and in which Ti-{(N/14)+(S/32)+(C/12)}×48 is 0.04 to 0.10%, and is subjected to heat treatment so as to be held at 100 to 200°C for ≥10 min after nitriding treatment. Further, in the nitriding treated steel, the average chemical composition (2) in the central region of the sheet thickness within the range from the center of the sheet thickness to 40% of the sheet thickness toward the surface is the same as the above composition (1) except for ≤0.03% C and 0.08 to 0.25% N, the hardness of the center of the sheet thickness is ≥200 by Hv, the number of pieces of iron nitride with a long side of ≥5 μm in the central region of the sheet thickness is ≤10 pieces per 1×10
-8 m
2 , and the number of pieces of iron nitride with a long length of 0.15 to -12 m
2 .
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了提供可以调和高强度和伸长性能的氮化处理钢，适用于氮化处理钢的原料的氮化处理用钢，并提供其制造方法。解决方案：用于氮化处理的钢具有组成（1），其包含≤0.01％C，0.001〜0.5％的Si，0.01〜0.5％的Mn，0.001〜0.1％的P，≤0.01％的S，0.001〜0.5％ Al，0.04〜0.2％Ti，0〜0.05％Nb，0〜0.005％B，≤0.005％N，余量为Fe与杂质，Ti-ä（N / 14）+（S / 32） +（C / 12）}×48为0.04〜0.10％，经氮化处理后，在100〜200℃下保持≥10分钟进行热处理。此外，在氮化处理钢中，从板厚中心到板厚向表面的40％的范围内的板厚中心区域的平均化学成分（2）与上述组成相同（1）除了≤0.03％C和0.08-0.25％N以外，板厚中心的硬度Hv为≥200，中心区域的长边≥5μm的氮化铁的数量的板厚为1×10 -8 m 2 ≤10个，长度为0.15〜5μm的氮化铁片数为板厚的中心每1×10 -12 m 2 ≥5个。版权所有（C）2004，JPO＆NCIPI

5. 发明专利

JP2002371319A Method for manufacturing steel sheet member and steel sheet member manufactured therewith 审中-公开
标题翻译：制造钢板及钢板的制造方法
公开(公告)号：JP2002371319A
公开(公告)日：2002-12-26
申请号：JP2001184576
申请日：2001-06-19
申请人： Mazda Motor Corp , マツダ株式会社
发明人： HANAKAWA KATSUNORI , ISHIDA YASUAKI
IPC分类号： C21D1/10 , C21D1/18 , C21D9/00 , C22C38/00 , C22C38/04
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a steel sheet member which can restrain a formation of oxide and vanishing of a plated film in quenching, and uniformly cool the member in quenching. SOLUTION: The method for manufacturing the steel sheet member made of a steel sheet comprises a preparation step for preparing the steel sheet, a press forming step for press forming the prepared steel sheet into a formed article W of a predetermined shape, and a hardening step for hardening the press formed article W at a predetermined hardening temperature of 950 deg.C or less, by generating heat inside in such a state as a liquid refrigerant is in contact with a part to be heated. The employed steel sheet is characterized by including carbon(C) of 0.1-0.2 mass% and several metals, by having A3 transformation temperature in the above hardening temperature, at which the metal structure is transformed to austenite, and by having a tensile strength of 550 MPa or less.
摘要翻译：要解决的问题：提供一种能够抑制淬火时的电镀膜的氧化物形成和消失的钢板部件的制造方法，并且对淬火部件进行均匀的冷却。解决方案：用于制造钢板的钢板件的制造方法包括：制备钢板的制备步骤，将预制的钢板压制成预定形状的成型制品W的加压成形步骤，以及硬化步骤在预定的硬化温度为950℃以下的情况下，通过在液体制冷剂与被加热部件接触的状态下内部产生热而使冲压成形体W硬化。所使用的钢板的特征在于，通过将上述硬化温度下的A3相变温度，金属组织转变为奥氏体，通过具有0.1〜0.2质量％的碳（C）和几种金属， 550MPa以下。

6. 发明专利

JPH11278301A Frame structure of vehicle body 失效
标题翻译：车身框架结构
公开(公告)号：JPH11278301A
公开(公告)日：1999-10-12
申请号：JP8726098
申请日：1998-03-31
申请人： Mazda Motor Corp , マツダ株式会社
发明人： HANAKAWA KATSUNORI , FUKAHORI MITSUGI , ISHIDA YASUAKI , YAMAMOTO YUKIO
IPC分类号： B62D25/00 , B60J5/04 , B62D21/00 , B62D25/04 , B62D29/00
CPC分类号： B60J5/0443 , B29C64/40 , B62D25/04 , B62D29/002
摘要： PROBLEM TO BE SOLVED: To improve an energy absorbing efficiency of a frame by studying characteristics of a filling material to be filled into a cross section of the frame, and using the filling material suitable therefor. SOLUTION: A frame structure comprises a frame FR with a cross section at least a part of which is filled with a filling materials. The filling materials has a mean compression strength of 4 MPa or more and/or a maximum flexural strength of 10 MPa or more. Particularly, the mean compression strength of 50 MPa or more and/or the maximum flexural strength of 60 MPa or more are/is set.
摘要翻译：要解决的问题：通过研究要填充到框架的横截面中的填充材料的特性以及使用适合于其的填充材料来提高框架的能量吸收效率。解决方案：框架结构包括具有横截面的框架FR，其中至少一部分填充有填充材料。填充材料的平均抗压强度为4MPa以上，和/或最大弯曲强度为10MPa以上。特别地，设定50MPa以上的平均抗压强度和/或60MPa以上的最大抗弯强度。

7. 发明专利

JP2006274357A Pressed member, its manufacturing method, and frame for vehicle 审中-公开
标题翻译：压力构件，制造方法和车辆框架
公开(公告)号：JP2006274357A
公开(公告)日：2006-10-12
申请号：JP2005095565
申请日：2005-03-29
申请人： Mazda Motor Corp , マツダ株式会社
发明人： WATANABE TADATOSHI , HANAKAWA KATSUNORI , ARIMI YUKIO , ODA KAZUYUKI , TANAKA KOJIRO , ISHIDA YASUAKI , FUKAHORI MITSUGI
IPC分类号： C21D9/00 , B21D22/20 , C21D1/06 , C22C38/00 , C22C38/14 , C23C8/32
摘要： PROBLEM TO BE SOLVED: To provide a nitrided member having the improved toughness, and its manufacturing method.
SOLUTION: A steel plate is prepared, in which the percentage of weight of titanium present not as a compound, but as an element form is ≤ 0.05% (S101), the steel plate is pressed to a predetermined shape (S102), the pressed steel plate is nitrided at high temperature (S103), and the nitrided steel plate is cooled (S104). In this condition, martensite is preferably deposited to realize higher strength.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有改善韧性的氮化部件及其制造方法。解决方案：制备钢板，其中不以化合物形式存在的钛重量百分比为0.05％（S101），将钢板压制成预定形状（S102）将压制钢板在高温下氮化（S103），将氮化钢板冷却（S104）。在这种情况下，优选沉积马氏体以实现更高的强度。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2005336581A Steel for nitriding treatment, nitriding treated steel and production method therefor 有权
标题翻译：用于硝化处理钢，硝化处理钢及其生产方法
公开(公告)号：JP2005336581A
公开(公告)日：2005-12-08
申请号：JP2004159335
申请日：2004-05-28
申请人： Mazda Motor Corp , Sumitomo Metal Ind Ltd , マツダ株式会社 , 住友金属工業株式会社
发明人： KOJIMA HIROTATSU , ISHII KAZUYA , HANAKAWA KATSUNORI , ISHIDA YASUAKI
IPC分类号： C23C8/26 , C21D1/06 , C21D6/00 , C21D9/48 , C22C38/00 , C22C38/32
摘要： PROBLEM TO BE SOLVED: To provide nitriding treated steel in which high strength and elongation properties can be reconciled, steel for nitriding treatment which is suitable as the stock for the nitriding treated steel, and to provide a production method therefor.
SOLUTION: (1) The steel for nitriding treatment has a composition comprising ≤0.01% C, 0.001 to 0.5% Si, 0.01 to 0.5% Mn, 0.001 to 0.1% P, ≤0.015% S, 0.001 to 0.5% Al, 0.01 to 0.2% Ti, 0.02 to 0.1% Cr, 0 to 0.05% Nb, 0 to 0.005% B and ≤0.005% N, and the balance Fe with impurities, and in which effect Ti=Ti-{(N/14)+(S/32)+(C/12)}×48:0.01 to 0.08%, and 0.4×effective Ti≤0.1-Cr are satisfied, and is subjected to heat treatment so as to be held at 100 to 200°C for ≥10 min after nitriding treatment. (2) Regarding the steel for nitriding treatment, the average chemical composition in the central region of the sheet thickness within the range from the center of the sheet thickness to 40% of the sheet thickness toward the surface is the same as the above composition in (1) except for ≤0.03% C and 0.08 to 0.25% N, the hardness of the center of the sheet thickness is ≥150 Hv hardness, and the number of pieces of iron nitride with a long side of ≥5 μm in the central region of the sheet thickness is ≤10 pieces per 1×10
-8 m
2 .
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供可以调和高强度和伸长性能的氮化处理钢，适用于氮化处理钢的原料的氮化处理用钢，并提供其制造方法。（1）氮化处理用钢，其组成包括：≤0.01％C，0.001〜0.5％Si，0.01〜0.5％Mn，0.001〜0.1％P，≤0.015％S，0.001〜0.5％Al ，0.01〜0.2％的Ti，0.02〜0.1％的Cr，0〜0.05％的Nb，0〜0.005％的B和≤0.005％的N，余量为Fe与杂质，其中Ti = Ti-ä（N / 14 ）+（S / 32）+（C / 12）}×48：0.01〜0.08％，有效Ti≤0.1-Cr为0.4倍，进行热处理，保持在100〜200度氮化处理≥10分钟。（2）关于氮化处理用钢，从板厚的中心到板的厚度的40％的范围内的板厚的中心区域的平均化学成分与上述的组成相同（1）除了≤0.03％C和0.08-0.25％N之外，板厚中心的硬度为≥150Hv硬度，中心长边≥5μm的氮化铁片数片材厚度的区域每1×10 -8 m 2 ≤10个。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2004291851A Manufacturing method for vehicle body member 有权
公开(公告)号：JP2004291851A
公开(公告)日：2004-10-21
申请号：JP2003088193
申请日：2003-03-27
申请人： Mazda Motor Corp , マツダ株式会社
发明人： HANAKAWA KATSUNORI , ISHIDA YASUAKI
IPC分类号： B62D65/00 , B23K11/00 , C21D1/26 , C23C8/26
摘要： PROBLEM TO BE SOLVED: To restrain a nitrided steel sheet from being cracked during a stage from a painting process to a drying process, and to ensure the nitrided steel sheet with stable strength after the drying process. SOLUTION: This manufacturing method for a vehicle body member includes: a plastic working process of performing plastic working for the steel sheet; a nitriding process of nitriding at least part of the plastically worked steel sheet; a welding process of welding the nitrided portion of the steel sheet to another plate material to prepare the vehicle body member constituting at least part of a vehicle body; a painting process of painting at least part of the vehicle body member; and a heating process of heating at least a painted portion of the vehicle body member to a temperature of 190 °C max. to dry a painted film on the painted portion. The method comprises a tempering process of tempering the nitrided portion of the steel sheet at temperatures of over 200 to and 250 °C incl. at timings from the welding process to the painting process. COPYRIGHT: (C)2005,JPO&NCIPI

10. 发明专利

JP2004249829A Method of manufacturing molded body for vehicle body 有权
公开(公告)号：JP2004249829A
公开(公告)日：2004-09-09
申请号：JP2003042366
申请日：2003-02-20
申请人： Mazda Motor Corp , マツダ株式会社
发明人： YAMASHITA KOJIRO , HANAKAWA KATSUNORI , ISHIDA YASUAKI , KATO KIKUO , WATANABE TADATOSHI
IPC分类号： B62D65/00 , B21D53/88 , B23K11/00 , C23C8/26
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a molded body for a vehicle body capable of securing the strength/rigidity of the molded body for the vehicle body and securing the corrosiveness of the mating surface of a flange part in the molded body for the vehicle body.
SOLUTION: Before assembled plate materials 4 are welded to the flange parts 5 to assemble the molded body for the vehicle body, a plating layer 3 is formed on the inner surface of the welded flange part 5 of at least one of the plurality of assembled plate materials 4 to secure a corrosive resistance between the flange parts 5 by the plating layer 3. Then the strength/rigidity of the molded body 6 for the vehicle body can be secured by nitriding the molded body 6 for the vehicle body.
COPYRIGHT: (C)2004,JPO&NCIPI

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