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1. 发明专利

JPH0579742B2 失效
公开(公告)号：JPH0579742B2
公开(公告)日：1993-11-04
申请号：JP24026087
申请日：1987-09-25
申请人： MAZDA MOTOR
发明人： OKAZAKI TAKESHI , SATO KAZUO , YAMAMOTO JUNICHI
IPC分类号： F01L1/04 , C22C37/04 , C22C37/10 , F01L1/047 , F01L1/18

2. 发明专利

JPH0561326B2 失效
公开(公告)号：JPH0561326B2
公开(公告)日：1993-09-06
申请号：JP18630385
申请日：1985-08-23
申请人： MAZDA MOTOR
发明人： SATO KAZUO , OKAZAKI TAKESHI , ASAI YASUSHI , HANAKAWA KATSUNORI
IPC分类号： C21D5/00

3. 发明专利

JPH0210223B2 失效
公开(公告)号：JPH0210223B2
公开(公告)日：1990-03-07
申请号：JP18568982
申请日：1982-10-20
申请人： MAZDA MOTOR
发明人： OKAZAKI TAKESHI , ASAI YASUSHI , HANANO KAZUYOSHI , SATO KAZUO
IPC分类号： B23K9/23 , C21D6/00 , C23C8/00 , C23C8/22

4. 发明专利

JPH01219120A INSPECTION METHOD FOR STRUCTURE OF CAST IRON 失效
公开(公告)号：JPH01219120A
公开(公告)日：1989-09-01
申请号：JP4557488
申请日：1988-02-27
申请人： MAZDA MOTOR
发明人： SATO KAZUO
IPC分类号： C21D1/20 , C21D5/00
摘要： PURPOSE:To quickly detect the mixture ratio of a bainite and residual austenite by measuring the linear expansion coefft. of a work from the dimensional variation accompanied by the cooling of the work of after austempering treatment and comparing this measured value with a set value. CONSTITUTION:A spherical graphite cast iron is made in the high temp. state of about 300 deg.C by cleaning it for short time by a water after its austempering treatment. This work W is placed between a laser beam generator 1 and light receiving machine 2, the external shape of the work W is measured, the work W is gradually cooled by a forced cooling nozzle 3 as well and the linear expansion coefft. is measured from the dimensional variation accompanied by the shrinkage during the cooling. The mixing ratio of the bainite and residual austenite of the cast iron structure is quickly detected by comparing this measured value with set value and the quality of the structure is decided.

5. 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.

6. 发明专利

JPS62253719A HEAT-TREATING DEVICE FOR CAST IRON PART 失效
公开(公告)号：JPS62253719A
公开(公告)日：1987-11-05
申请号：JP9764586
申请日：1986-04-25
申请人： MAZDA MOTOR
发明人： SATO KAZUO
IPC分类号： C21D5/00
摘要： PURPOSE:To prevent the overheating of a salt and to improve the quality of the cast work by providing a cooler to be operated by the detection of the salt temp. to the salt bath of a device wherein a cast parts heated at high temp. is cooled in the salt bath and then the part is isothermally transformed in a low-temp. heating furnace. CONSTITUTION:The high-temp. cast iron parts which has been heated in a high-temp. heating furnace 2 and austenitized is subsequently charged in the salt bath 3, cooled by the salt, hardened with the salt, and kept at a specified temp. When the cast iron parts are continuously charged into the salt bath 3 and the salt is heated to a temp. higher than a specified temp., the temp. is detected by temp. detectors 13a and 13b provided in the salt bath 3. The signals of the detectors are inputted to the controller 15 of a cooling plate 7, the cooling plate 7 through which cooling air is passed is lowered, and the surface part of the salt is cooled. When the salt is cooled to a specified temp., the temp. is detected by temp. detectors 14a and 14b, the cooling plate 7 is lifted, and the supply of cooling air is stopped.

7. 发明专利

JPS62192558A MEMBER OF SPHEROIDAL GRAPHITE CAST IRON EXCELLENT IN MACHINABILITY 失效
公开(公告)号：JPS62192558A
公开(公告)日：1987-08-24
申请号：JP3588586
申请日：1986-02-19
申请人： MAZDA MOTOR
发明人： SATO KAZUO , OKAZAKI TAKESHI
IPC分类号： C22C37/04
摘要： PURPOSE:To facilitate machining after austempering treatment without application of primary heat treatment, by properly setting up the amounts of Ni and Mo in particular in a member of spheroidal cast graphite cast iron with a specific composition and by other means. CONSTITUTION:The member of spheroidal graphite cast iron has a composition consisting of, by weight ratio, 2.50-4.10% C, 1.70-3.60% Si,

8. 发明专利

JPS6272471A PRODUCTION APPARATUS FOR CASTING 失效
公开(公告)号：JPS6272471A
公开(公告)日：1987-04-03
申请号：JP21581485
申请日：1985-09-27
申请人： MAZDA MOTOR
发明人： SATO KAZUO , OKAZAKI TAKESHI , HANAKAWA KATSUNORI , ASAI YASUSHI
IPC分类号： B22D47/00
摘要： PURPOSE:To prevent the generation of a heat treatment defect by controlling a die casting machine in such a manner that the knock-out cycle is shortened when the temp. of the casting to be carried into a heating furnace is below the A1 transformation point. CONSTITUTION:The temp. of the casting right after the knock-out is detected by a temp. detector. The knock-out cycle is shortened by controlling a motor 22 and selector valve 14 of the die casting machine by a control unit when the detected temp. is below the temp. obtd. by adding the temp. drop during the conveyance to the A1 transformation point, etc., when the temp. of the casting to be carried into the holding furnace is below the A1 transformation point. Namely, the the intervals for the pitch feed of a rotary table 11 are set shorter and the selector valve 14 is changed over in synchronization with such timing. The temp. in the knock-out stage of the succeeding castings is thereby restored up to the prescribed temp.

9. 发明专利

JPS6179717A Manufacture of casting of spheroidal graphite cast iron 失效
标题翻译：石墨铸铁铸铁的制造
公开(公告)号：JPS6179717A
公开(公告)日：1986-04-23
申请号：JP20117384
申请日：1984-09-26
申请人： Mazda Motor Corp
发明人： SATO KAZUO , ASAI YASUSHI , OKAZAKI TAKESHI , HANAKAWA KATSUNORI
IPC分类号： C21D5/00
摘要： PURPOSE: To obtain the titled casting having improved toughness by charging molten shperoidal graphite cast iron, taking out the resulting casting before the precipitation of impurities is completed, and subjecting the casting to heat treatment, quenching, and isothermal holding under specified conditions at a constant temp. to form a matrix structure consisting of austenite and bainite.
CONSTITUTION: Molten spheroidal graphite cast iron is poured into a mold and solidified. The resulting casting is taken out of the mold at the time when the temp. is above the A
1 transformation point. Before the temp. falls to the A
1 transformation point, the whole or a part of the casting is heated at 820W950°C for ≥10sec to stabilize austenitizing and to uniform the distribution of carbon in the matrix in the form of a solid soln. The casting is then quenched to the Ms pointW470°C and held at the temp. for 5minW3hr to form bainite, and it is cooled to room temp. By this method a casting of spheroidal graphite cast ion having superior fatigue strength is obtd. in an energy saving manner.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了获得具有改善韧性的标准铸件，通过装入熔融的石英石墨铸铁，在沉淀杂质之前取出所得铸件，并在规定的条件下以恒定的温度对铸件进行热处理，淬火和等温保持温度以形成由奥氏体和贝氏体组成的基体结构。构成：将熔融的球墨铸铁倒入模具中并固化。所得铸件在模具中取出时，在A1转换点之上。在温度之前落入A1转化点，将整个或一部分铸件在820-950℃加热达= 10秒以稳定奥氏体化，并使固体溶胶形式的基体中的碳分布均匀。然后将铸件淬火至Ms点-70℃，并保持在温度 5分钟-3小时以形成贝氏体，并将其冷却至室温。通过该方法，可以获得具有优异的疲劳强度的球墨铸件。节能。

10. 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

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