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1. 发明专利

JP2004360070A Ultrahigh temperature hot-forged non-heat-treated part, and its production method 有权
公开(公告)号：JP2004360070A
公开(公告)日：2004-12-24
申请号：JP2004142517
申请日：2004-05-12
申请人： Aichi Steel Works Ltd , Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 愛知製鋼株式会社 , 新日本製鐵株式会社
发明人： KADA OSAMU , TODA MASAHIRO , ONO NAOHITO , KINO KINSEI , SEGAWA KOHEI , IWAKI SHOJI , NOMURA KAZUE
IPC分类号： B21J1/02 , B21J5/00 , C21D8/00 , C22C38/00 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide an ultrahigh temperature hot-forged non-heat-treated part with a complicated shape which has high strength and high toughness even if quenching and tempering are obviated by an ultrahigh temperature hot forging method capable of improving the yield of the material and capable of securing the service life of a die.
SOLUTION: The ultrahigh temperature hot-forged non-heat-treated part has prescribed components and has a microstructure of ferrite and pearlite. In the surface layer part of a forging in the range from the surface to 1/20 of the thickness, the ferrite fraction Fs is 0.15 to 0.7, and the average ferrite grain diameter ds is 5 to 20 μm. In the central part of the forging in the range from the center of the thickness in the forging to 2/5, the ferrite fraction Fc is 0.1 to 0.6, and the average ferrite grain diameter dc is 10 to 30 μm. Also, Fs/Fc is 1.05 to 1.40, and ds/dc is 0.80 to 095.
COPYRIGHT: (C)2005,JPO&NCIPI

2. 发明专利

JP2003138315A INDUCTION HEATER FOR STEEL 审中-公开
公开(公告)号：JP2003138315A
公开(公告)日：2003-05-14
申请号：JP2001331868
申请日：2001-10-30
申请人： NIPPON STEEL CORP , TOYOTA MOTOR CORP , AICHI STEEL WORKS LTD
发明人： NAKAMURA MITSURU , KADA OSAMU , TODA MASAHIRO , MORISHITA KOICHI , SEGAWA HARUHIKO , MORI MOTOHIDE , SEGAWA KOHEI , HIROSE YASUO , IWAKI SHOJI
IPC分类号： H05B6/10 , C21D1/00 , C21D1/42
摘要： PROBLEM TO BE SOLVED: To provide an induction heater which can reliably raise the temperature of a center part of a steel member to the temperature immediately below the liquidus, maintain a surface layer part in a non-molten condition, and feed the steel member to the next hot working in a most favorable condition. SOLUTION: In this induction heater to pass the steel member through an induction heating coil in the heater and heat the steel member, a cooling device 4 to allow a cooling medium to flow into a space between the heater body and the steel member 3 is disposed on an end part of the heater body. Preferably, a steel member surface temperature detecting means is provided on the outlet side of the heater body, and a means to control the heating quantity, the cooling medium quantity and the moving speed in a single or combined manner based on the detected temperature is provided.

3. 发明专利

JP2004346415A Ultrahigh-temperature hot-forged non-heat-treated parts and manufacturing method therefor 有权
公开(公告)号：JP2004346415A
公开(公告)日：2004-12-09
申请号：JP2003148077
申请日：2003-05-26
申请人： Aichi Steel Works Ltd , Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 愛知製鋼株式会社 , 新日本製鐵株式会社
发明人： TODA MASAHIRO , KADA OSAMU , FUJITA TAKASHI , KINO KINSEI , ONO NAOHITO , IYODA IKUHIDE , IWAKI SHOJI , NOMURA KAZUE , SEGAWA KOHEI
IPC分类号： B21J5/00 , C21D8/06 , C22C38/00 , C22C38/12 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To solve problems of the deterioration of toughness in hot-forged parts and the like, in an ultrahigh-temperature hot-forging process for manufacturing complex shaped parts and improving a material yield during manufacturing.
SOLUTION: The ultrahigh-temperature hot-forged non-heat-treated parts include predetermined components, and have a micro structure comprising ferrite and pearlite, average grain sizes of ferrite and pearlite of less than 10 μm, a total decarburized depth DM-T specified in JIS G 0588 of 0.02 to 0.06 mm, a tensile strength of 800 to 1,300 MPa, and a yield ratio of 0.7 to 0.95. The manufacturing method comprises heating a steel material into a temperature range between the lower limit of either higher one out of the solidus temperature[°C]×0.94 or 1,250°C, and the upper limit of the solidus temperature[°C]×0.98; ultrahigh-temperature hot-forging the product in the above temperature range; then further finish-forging the forged workpiece so as to make a logarithmic strain 0.5 or more, at 700°C or higher but less than 800°C; and then radiationally cooling the product.
COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2004060049A Ultrahigh temperature hot forged non-heat-treated part and method for producing the same 有权
公开(公告)号：JP2004060049A
公开(公告)日：2004-02-26
申请号：JP2003141376
申请日：2003-05-20
申请人： Aichi Steel Works Ltd , Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 愛知製鋼株式会社 , 新日本製鐵株式会社
发明人： TODA MASAHIRO , KADA OSAMU , OZAWA SHUJI , ONO NAOHITO , SEGAWA HARUHIKO , MORI MOTOHIDE , KINO KINSEI , SEGAWA KOHEI , NOMURA KAZUE , IWAKI SHOJI
IPC分类号： B21J5/00 , C21D8/06 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To solve the problem as for deterioration in toughness after forging in ultrahigh temperature hot forging for producing a part having a shape more complicated than that of the conventional hot forged part or improving the yield of the material on production.
SOLUTION: In the ultrahigh temperature hot forged non-heat-treated part, a steel member having prescribed components is used, the fraction of ferrite is 0.1 to 0.6, the average grain size of ferrite is 10 to 30 μm, and the depth of all decarburized layers is 0.02 to 0.08 mm. In the superhigh temperature hot forging method, a steel member is heated in such a manner that the lower limit temperature is controlled to a solidus temperature×0.94 and the upper limit temperature is controlled to a solidus temperature or lower, and is subjected to ultrahigh temperature hot forging, and thereafter, the workpiece is subjected to finish forging of 0.2 in logarithmic strain at 900 to 1,250°C, and is thereafter allowed to cool.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2006021207A Apparatus for separating weld base stock 有权
标题翻译：用于分离焊接库的装置
公开(公告)号：JP2006021207A
公开(公告)日：2006-01-26
申请号：JP2004199551
申请日：2004-07-06
申请人： Aichi Steel Works Ltd , Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 愛知製鋼株式会社 , 新日本製鐵株式会社
发明人： KADA OSAMU , TODA MASAHIRO , KAWABATA TERUO , ERIGUCHI TADASHI , MORI MOTOHIDE , KINO KINSEI , SEGAWA KOHEI , SHINJO MUTSUO , IWAKI SHOJI , MIZUNO HIROYUKI , WATANABE YOSHIHIRO
IPC分类号： B21K27/00 , B65G47/82
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for separating a weld base stock by which a base stock welded in a heating furnace can surely be separated so as to prevent the occurrence of conveying troubles.
SOLUTION: This apparatus for separating the base stock welded in the back and front direction in the outlet of the heating furnace at the heating time while continuously supplying cut base stocks into the heating furnace is provided with: a base stock conveying portion composed of a conveyor positioned at lower height than the heating furnace and a chute connecting the heating furnace with the conveyor; and a weld base stock separating portion composed of rollers for separating the head part of the base stock at the welded rear part of the base stock; and an eccentric cam for pushing down the head part of the base stock at the welded base stock front part. The base stock 5 and the weld surface of the base stock 6 are separated by supporting the head part of the base stock at the welded rear part of the base stock 5 with the rollers 10 and pushing down the head part of the base stock at the weld base stock front part 6 with the eccentric cam 11. The separated base stock 6 is dropped down onto the chute 8 and conveyed onto a chain conveyor 7.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于分离焊接基体的装置，通过该装置可以可靠地分离焊接在加热炉中的基础材料，以防止输送故障的发生。解决方案：将加热炉出口处的加热炉出口处的前后方向焊接的基材分离到加热炉中，同时连续地向加热炉供给切割的基础原料的设备具有：基材输送部分位于比加热炉低的高度的输送机和连接加热炉与输送机的滑道; 以及焊接基材分离部，其由用于在基材的焊接后部分离基材的头部的辊构成; 以及用于在焊接的原材料前部部分下压基材的头部的偏心凸轮。通过用辊子10在基材5的焊接后部处支撑基材的头部，将基材5和焊接表面分开，并将基材的头部按压在焊接原材料前部6与偏心凸轮11.分离的基础材料6向下落到滑槽8上并被输送到链式输送机7上。（C）2006年，JPO＆NCIPI

6. 发明专利

JP2004003002A Super-high temperature hot-forged non-tempered product, and method for manufacturing the same 有权
公开(公告)号：JP2004003002A
公开(公告)日：2004-01-08
申请号：JP2003113796
申请日：2003-04-18
申请人： Aichi Steel Works Ltd , Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 愛知製鋼株式会社 , 新日本製鐵株式会社
发明人： TODA MASAHIRO , KADA OSAMU , OZAWA SHUJI , ONO NAOHITO , IYODA IKUHIDE , MORI MOTOHIDE , KINO KINSEI , SEGAWA KOHEI , NOMURA KAZUE , IWAKI SHOJI
IPC分类号： B21J5/00 , B21J13/02 , C21D8/00 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To solve problems of toughness degradation after forging or the like in the super-high temperature hot forging for manufacturing products of a shape more complicated than that of conventional hot-forged ones, and improving a yield of a material during the manufacture.
SOLUTION: A super-high temperature hot-forged non-tempered product is formed of a steel of predetermined composition, with the ferrite fraction of 0.1-0.6, the ferrite grain size of 20-40 μm, the porosity of 0.2 to ≤ 1.0%, and the full depth of a decarburized layer of 0.02-0.12 mm. In a super-high temperature hot-forging method, the product is heated so that a lower limit temperature exceeds the liquidus temperature, and an upper limit temperature is set to be the liquidus temperature x 0.98, and subjected to the super-high temperature hot forging so that ≥ 90% of the surface of a stock is brought into contact with dies, and naturally cooled after the finish forging.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2003311359A Super high-temperature hot forging method 有权
标题翻译：超高温锻造方法
公开(公告)号：JP2003311359A
公开(公告)日：2003-11-05
申请号：JP2002120980
申请日：2002-04-23
申请人： Aichi Steel Works Ltd , Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 愛知製鋼株式会社 , 新日本製鐵株式会社
发明人： TODA MASAHIRO , KADA OSAMU , OZAWA SHUJI , ONO NAOHITO , IYODA IKUHIDE , MORI MOTOHIDE , SEGAWA KOHEI , NOMURA KAZUE , IWAKI SHOJI
IPC分类号： B21J5/00 , B21J5/02 , B21J13/02 , C21D8/00 , C22C38/00 , C22C38/04 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To solve problems such as toughness degradation after forging in super high-temperature forging to manufacture a component of a shape more complicated than that of conventional hot-forged components and to improve the yield of a material during the manufacture. SOLUTION: A steel member containing, by mass, ≥0.1% to COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了解决在超高温锻造中锻造后的韧性劣化等问题，制造比常规热锻件更复杂的形状的部件，并且提高材料的屈服制造。 <1>解决方案：将质量≥0.1％至<1％的碳的钢构件在下限温度为0.94或1250℃的范围内加热，以较高者为准，上限温度为液相线温度×0.98。在钢构件进行超高温锻造之后，使工件表面的≥85％（如果加热温度超过固相线温度，≥90％）与模具接触，钢构件进一步锻造在温度为900〜1250℃，硬化退火。版权所有（C）2004，JPO

8. 发明专利

JPH0615401A METHOD FOR FORGING RING 失效
公开(公告)号：JPH0615401A
公开(公告)日：1994-01-25
申请号：JP17090092
申请日：1992-06-29
申请人： AICHI STEEL WORKS LTD
发明人： SEGAWA KOHEI
IPC分类号： B21H1/06 , B21J9/02 , B21K21/06
摘要： PURPOSE:To provide a forging method of a ring which is effective for preventing the peeling of burr and the damage of a die surface of a forging press device by preventing the generation of the burr at the time of obtaining a ringed rolled material by rolling with a rolling mill. CONSTITUTION:In the rolling process, the ring hole 10a of a profile roll 10 in the rolling mill is attached to the outer peripheral part of the ring-like blank 55 and the ring hole 12a of a mandrel 12 is attached to the inner peripheral part of the ring-like blank 55, and the ring-like blank 55 is rolled by spreading it in the peripheral direction. Then pressed rolls 21, 22 are abutted on shaft end surfaces 27a, 27b of the ring-like blank 55 to obtain the ring-like rolled material 57. In a forging press process, the ring-like rolled material 57 is forcedly pressed by the die surfaces of the forging press device to obtain the forging ring.

9. 发明专利

JPH05348A FORGING DEVICE 失效
公开(公告)号：JPH05348A
公开(公告)日：1993-01-08
申请号：JP15329691
申请日：1991-06-25
申请人： AICHI STEEL WORKS LTD
发明人： SHINOHARA TAKASHI , SEGAWA KOHEI
IPC分类号： B21J9/20 , B21J13/02 , B23Q17/24 , B30B15/28
摘要： PURPOSE:To provide a forging device in which the relative displacement of upper and lower forging dies is detected and an alarm is raised when the displacement is beyond a prescribed value. CONSTITUTION:In the forging die 6, an X detecting piece 7, a Y detecting piece 8, and a Z detecting piece 9 in projecting piece shapes are fixed. An X displacement detecting means, a Y displacement detecting means, and a Z displacement detecting means are each provided with a laser oscillator 12, a polygon mirror 13, a rotary encoder 15, a floodlighting lens 16 for making a parallel laser beam, a light receiving lens 18, and a light receiving element 19. When a metal material is forged in the forging die 6, the displacements in the X direction of the X detecting piece 7, in the Y direction of the Y detecting piece 8, and in the Z direction of the Z detecting piece 9 art detected by the laser. When the displacements are beyond the prescribed values, the alarm is raised by an alarm raising means.

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