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1. 发明专利

JPS63227743A VEHICLE ENGINE MOUNTING MEMBER AND ITS PRODUCTION 失效
公开(公告)号：JPS63227743A
公开(公告)日：1988-09-22
申请号：JP6498087
申请日：1987-03-17
申请人： MAZDA MOTOR , KUBOTA LTD
发明人： OKAZAKI TAKESHI , SATO KAZUO , HANAKAWA KATSUNORI , SUKITA KOICHI , YOSHINO SHOICHI , IIO NOBUHISA
IPC分类号： C21D5/00 , C21D1/20 , C22C37/04 , F16M5/00 , F16M7/00
摘要： PURPOSE:To inexpensively manufacture a tough vehicle engine mounting member having required strength and impact resistance, by incorporating respectively specific percentages of C, Si, Mn, P, S, Cu, Ni, and Mg into Fe and also by forming a mixed structure of bainite and retained austenite. CONSTITUTION:A spheroidal graphite casting which has a composition consisting of, by weight, 2.5-4.1% C, 1.5-3.0% Si, 0.3-0.5% Mn,

2. 发明专利

JPS63227744A SPHEROIDAL GRAPHITE CAST IRON CASTING AND ITS PRODUCTION 失效
公开(公告)号：JPS63227744A
公开(公告)日：1988-09-22
申请号：JP6498187
申请日：1987-03-17
申请人： MAZDA MOTOR , KUBOTA LTD
发明人： OKAZAKI TAKESHI , SATO KAZUO , HANAKAWA KATSUNORI , SUKITA KOICHI , YOSHINO SHOICHI , IIO NOBUHISA
IPC分类号： C21D5/00 , C21D1/20 , C22C37/04
摘要： PURPOSE:To inexpensively manufacture a tough spheroidal graphite cast iron casting excellent in strength and impact resistance, by incorporating respectively specified percentages of C, Si, Mn, P, S, Cu, Ni, and Mg to Fe and also by providing a structure in which bainite and retained austenite exist as a mixture. CONSTITUTION:A spheroidal graphite cast iron casting consisting of, by weight, 2.5-4.1% C, 1.5-3.5% Si, 0.3-0.5% Mn, =5min to undergo austenitizing treatment and is then heated and held at 350-410 deg.C for >=20min to undergo isothermal transformation treatment so as to be formed into a structure in which bainite structure and retained-austenite structure (about 25-45vol.%) exist as a mixture. In this way, the spheroidal graphite cast iron casting securing required strength, toughness, fatigue strength and improved in shrinkage at the time of casting and machinability in an as-cast state can be inexpensively manufactured.

3. 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

4. 发明专利

JPH07116875A BEAM WELDING METHOD 失效
公开(公告)号：JPH07116875A
公开(公告)日：1995-05-09
申请号：JP28393193
申请日：1993-10-19
申请人： MAZDA MOTOR
发明人： FUKUOKA HIROSHI , OSUMI MASAHIRO , NAKANISHI TOSHISUKE , FUKAHORI MITSUGI , HANAKAWA KATSUNORI
IPC分类号： B23K26/21 , B23K26/046 , B23K26/00 , B23K26/04
摘要： PURPOSE:To prevent the generation of a strain on a panel member due to heat, and to provide a beam welding method by which the attachment of welding spatters to the outter surface of the panel member can be prevented at the time of welding by overlapping the tip parts of the panel members. CONSTITUTION:The mating face parts 44 of the joint flange inner 3 of a rear pillar inner panel 1 and the joint flange outer 4 of a rear pillar outer panel 2, are aligned. The tip part 3A of the joint flange inner 3, is allowed to project outside the mating face part 4A of the joint flange outer 4, and its projection quantity (s) is made almost equal to the thickness of the joint flange inner 3. At this time, the flared part 4B of the joint flange outer 4, is projected larger than the tip part 3A of the joint flange inner 3. At the state in which the mating face parts 4A of the joint flange inner 3 and the joint flange outer 4, are aligned, the end face of the tip part 3A of the joint flange inner 3, is irradiated by an energy beam R with a high density, such as a laser beam.

5. 发明专利

JPH0571349B2 失效
公开(公告)号：JPH0571349B2
公开(公告)日：1993-10-07
申请号：JP21581585
申请日：1985-09-27
申请人： MAZDA MOTOR
发明人： ASAI YASUSHI , SATO KAZUO , OKAZAKI TAKESHI , HANAKAWA KATSUNORI
IPC分类号： B22D47/00 , B22D31/00

6. 发明专利

JPH0578735A FERROUS MEMBER AND ITS MANUFACTURE 失效
公开(公告)号：JPH0578735A
公开(公告)日：1993-03-30
申请号：JP24741491
申请日：1991-09-26
申请人： MAZDA MOTOR
发明人： HANAKAWA KATSUNORI
IPC分类号： C21D3/04 , C21D5/00 , C21D6/00 , C22C37/00 , C22C38/00
摘要： PURPOSE:To provide a ferrous member high in the coefficient of thermal expansion, having high seizing resistance to an aluminum alloy and good in workability and its manufacturing method. CONSTITUTION:Steel or cast iron contg. C, Si and Mn is subjected to decarburizing treatment and is thereafter subjected to austempering treatment or is subjected to decarburizing treatment at the time of austempering treatment to form its structure into a mixed one contg. ferrite and retained austenite on the surface part or a mixed one contg. ferrite, retained austenite and bainite. In the case the stock is made of steel, it contains, by weight, 0.7 to 1.2% C, 1.5 to 2.5% Si and 0.5 to 2.0% Mn, and in the case the stock is made of cast iron, it contains 2.6 to 4.0% C, 1.5 to 2.5% Si and 0.2 to 1.0% Mn. Preferably, an aluminum alloy member is used as its mate.

7. 发明专利

JPH03189307A MANUFACTURE OF CAMSHAFT 失效
公开(公告)号：JPH03189307A
公开(公告)日：1991-08-19
申请号：JP32934189
申请日：1989-12-18
申请人： MAZDA MOTOR
发明人： NOMURA SEIJI , MIWA YOSHIHISA , SHIBATA SHINYA , HANAKAWA KATSUNORI
IPC分类号： F01L1/04 , B23K15/00 , F16H53/02
摘要： PURPOSE:To prevent any weld crack from occurring in a weld zone by heating the weld zone immediately after welding with a high energy beam which is installed separately from a welding high energy beam and specifies the irradiation direction. CONSTITUTION:A cam member 1, having a hollow part, being high carbon at least on the surface, is fitted in an outer circumference of a pipe-make shaft member 2, and then the cam member 1 and the shaft member 2 are welded together with a high energy beam 4 irradiated from the normal direction of the shaft member 2. Another high energy beam 5 apart from the high energy beam 4 is irradiated to a weld zone immediately after welding from the tangential direction of the shaft member 2, thereby heating the weld zone. With this constitution, it is annealed over an extensive range, namely, long time as being heated at a lower temperature than that at time of the welding. Accordingly, since the weld zone of the cam member 1 can avoid any quenching, at least the surface will not contract so largely irrespective of high carbon, so that a weld crack is not produced at all.

8. 发明专利

JPH02294461A CARBURIZING TREATING METHOD FOR STEEL MEMBER 失效
公开(公告)号：JPH02294461A
公开(公告)日：1990-12-05
申请号：JP11653589
申请日：1989-05-09
申请人： MAZDA MOTOR
发明人： SHIBATA SHINYA , MIWA YOSHIHISA , HANAKAWA KATSUNORI
IPC分类号： C23C8/22 , C23C8/32 , C23C8/34
摘要： PURPOSE:To surely improve pitting resistance, wear resistance and toughness by cooling down a steel member to a temp. lower than the A1 transformation point at the specific cooling velocity after executing carburizing treatment to the steel member into the specific surface carbon concn. and successively executing carburizing quenching or carburizing-nitriding quenching. CONSTITUTION:The carburizing treatment is executed to the steel member so that the surface carbon concn. thereof comes to 0.8-1.0%. This carburizing treatment may be executed e.g. by heat-holding at about 900-930 deg.C for about 2-4hr under carburizing gas atmosphere of CO and CO2 series. After that, the steel member is cooled down to a temp. lower than A1 transformation point with 0.5-10 deg.C/min cooling velocity. After that, the steel member is rapidly cooled after holding at about 800-850 deg.C for about 5-20min under the carburizing gas atmosphere of CO and CO2 series or carburizing-nitriding gas atmosphere composed, of adding adequate quantity of NH3 gas to the above series. By this method, without enlarging the variation caused by the heat treatment the pitting resistance, wear resistance and toughness can be surely improved.

9. 发明专利

JPH02185926A PRODUCTION OF CAM PARTS 失效
公开(公告)号：JPH02185926A
公开(公告)日：1990-07-20
申请号：JP400389
申请日：1989-01-10
申请人： MAZDA MOTOR
发明人： OSAKI SHIGEZO , HANAKAWA KATSUNORI , KUSUKI HIROAKI
IPC分类号： C21D9/30 , C21D7/06
摘要： PURPOSE:To simply produce wear resistant cam parts by remelting the cam face of stock for cam parts except both side edges and shot-peening the unremelted side edges. CONSTITUTION:Cast iron stock 1 for a camshaft is prepd. and rough-worked and the cam face 2 of the stock 1 is remelted except both side edges 2a with a TIG device 3. The cam face 2 is then ground, the unremelted side edges 2a at the nose parts of the cam face 2 are shot-peened and the surface of the cam face 2 is finished by paper lapping to produce a camshaft 4. The fatigue strength of both the side edges 2a of the cam face 2 is improved and the camshaft 4 not causing abnormal wear is obtd.

10. 发明专利

JPH02138415A PRODUCTION OF FERROUS SLIDING MEMBER 失效
公开(公告)号：JPH02138415A
公开(公告)日：1990-05-28
申请号：JP28988688
申请日：1988-11-15
申请人： MAZDA MOTOR
发明人： ASAI YASUSHI , OKAZAKI TAKESHI , HANAKAWA KATSUNORI
IPC分类号： C21D5/00 , C21D8/00
摘要： PURPOSE:To impart the coefft. of thermal expansion approximate to the coefft. of thermal expansion of an Al alloy to the sliding member and to improve the wear resistance of the sliding member by subjecting the sliding member to an austemper treatment and subjecting the sliding surface to shot peening. CONSTITUTION:The sliding member made of a cast iron is subjected to the austemper treatment to form the structure contg. 50% residual austenite. The sliding surface of this sliding member is subjected to the shot peening at 0.05 to 0.2mm short grain diameter. The transformation of the residual austenite to martensite is suppressed to a lower level in this way and the high surface hardness and sufficient wear resistance are assured. Since many fine recesses are formed on the sliding surface, the sliding characteristic by an oil reserving effect is improved. This sliding member is applicable to all members which make fitting and sliding with the mating member of the Al alloy.

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