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1. 发明专利

JP2000140980A PRODUCTION OF METAL MEMBER WITH THROUGH HOLE AND METAL MEMBER WITH THROUGH HOLE 失效
公开(公告)号：JP2000140980A
公开(公告)日：2000-05-23
申请号：JP31344998
申请日：1998-11-04
申请人： DAIDO STEEL CO LTD
发明人： OMA HIDEYUKI , ISHIDA KAZUHISA
IPC分类号： B23P23/04 , B21C23/20 , B21J5/06
摘要： PROBLEM TO BE SOLVED: To provide a production method of a metal member with a through hole of a small and long size capable of securing a precision for a formed position and straightness of the through hole well. SOLUTION: A through hole 21 is formed beforehand by drilling or backward extrusion and blanking for a metal stock having a low aspect ratio before forging. When an aspect ratio of the metal stock 20 is small, a forming precision of the through hole 21 is relatively easily secured. Reducing forging is conducted while inserting a mandrel 55 in the through hole 21. The stock 20, while being reduced in an axial cross section outer diameter and through hole inner diameter by a die hole 57 of a forging die 56, is formed to a non round shape in its outer shape corresponding to a die hole inner face. On the other hand, a through hole 21 inner face is restricted by the mandrel 55 and is formed so as to have a corresponding inner diameter. At this time, the mandrel 55 is pressed into a die hole 57 roughly in isotropy in the peripheral direction through the stock 20 not to cause deflection. As a result, a forming precision of the through hole 2 finally formed for an obtained metal member 1 is improved.

2. 发明专利

JP2000015379A FORGING METHOD OF HIGH CARBON STEEL 失效
公开(公告)号：JP2000015379A
公开(公告)日：2000-01-18
申请号：JP18712098
申请日：1998-07-02
申请人： DAIDO STEEL CO LTD
发明人： OMA HIDEYUKI , YATAZAWA JUN
IPC分类号： B21J1/06 , B21J5/00 , B21J9/20 , C21D1/26 , C21D1/30 , C21D1/32 , C21D11/00
摘要： PROBLEM TO BE SOLVED: To easily manufacture even parts having a complicated shape, further to improve productivity and moreover not to generate the reduction of wear resistance owing to the generation of a decarburized layer, the complication of a process and the reduction of material yield. SOLUTION: This method comprises a softening and annealing process wherein a material to be forged consisting of a high carbon steel such as a cold die steel and a high speed tool steel is heated in an austenitic region and thereafter gradually cooled at a cooling speed of =200 deg.C to =750 deg.C to =200 deg.C to

3. 发明专利

JPH06212258A METHOD FOR WORKING FERROCHROME ALLOY 失效
公开(公告)号：JPH06212258A
公开(公告)日：1994-08-02
申请号：JP520593
申请日：1993-01-14
申请人： DAIDO STEEL CO LTD
发明人： OMA HIDEYUKI , SAKATA MASAFUMI
IPC分类号： B21B1/16 , B21B1/46 , B21B3/02 , B21B15/00 , B21B45/00 , B24B1/00 , C21D8/06
摘要： PURPOSE:To prevent the generation of cracks easily accompanying the repair of a grinder on the surface of a slab at the time of subjecting a ferrochrome alloy to wire rod rolling and to improve its yield. CONSTITUTION:The cast slab or steel slab of a ferrochrome alloy essentially consisting of 20 to 26% Cr and 2 to 6% Al, and te balance Fe is cooled from >=700 deg.C at 7X10 to 3X10 deg.C cooling rate and is subjected to grinding in the temp. range of 450 to 250 deg.C.

4. 发明专利

JP2015092562A 軟磁性細線及びその製造方法、並びに、交流用メッシュシート、交流用焼結シート、交流用ゴムシート及び交流用積層シート审中-公开
公开(公告)号：JP2015092562A
公开(公告)日：2015-05-14
申请号：JP2014201018
申请日：2014-09-30
申请人： DAIDO STEEL CO LTD , NIPPON SEISEN CO LTD
发明人： SAITO AKIHIKO , INUI KEIGO , AMAGI ISATO , OMA HIDEYUKI , AKIURA TSUNEO , SEO NAONORI
IPC分类号： H01F1/14 , C21D6/00 , H01F1/00 , H01F27/36
摘要：【課題】特定の周波数域で使用される磁気特性に優れた軟磁性細線及びその製造方法、並びに、これを用いた交流用メッシュシート、交流用焼結シート、交流用ゴムシート及び交流用積層シートを提供すること。【解決手段】軟磁性細線は、線径が0.15mm以下であり、結晶粒径が1μm以上100μm以下の範囲にある結晶粒の面積率が50%以上であり、さらに、飽和磁束密度が0.6T以上2.6T以下、かつ、125kHzにおける複素比透磁率が100以上である軟磁性材料からなる。交流用メッシュシート、交流用焼結シート、交流用ゴムシート及び交流用積層シートは、この軟磁性細線を織り、焼結し、又は、ゴム若しくは樹脂と複合化させることにより得られる。【選択図】図1

5. 发明专利

JP2005325381A Stainless steel wire for heat resistant spring, and heat resistant spring obtained by using the same 有权
标题翻译：耐热弹簧用不锈钢丝及使用其的耐热弹簧
公开(公告)号：JP2005325381A
公开(公告)日：2005-11-24
申请号：JP2004142685
申请日：2004-05-12
申请人： Chuo Spring Co Ltd , Daido Steel Co Ltd , Nippon Seisen Co Ltd , 中央発條株式会社 , 大同特殊鋼株式会社 , 日本精線株式会社
发明人： KAWABATA NAOYUKI , TANIMOTO YOSHINORI , ICHIKAWA MASAHARU , OMA HIDEYUKI , ICHIHARA YUICHI
IPC分类号： C22C38/00 , C22C38/58 , F01N13/08 , F01N13/16 , F16F1/06 , F01N7/08 , F01N7/16
摘要： PROBLEM TO BE SOLVED: To provide a stainless steel wire for a heat resistant spring improved in thermal deformation resistance and corrosion resistance in a high temperature environment, in relation to the heat resistant spring used in the high temperature environment, such as engine intake/exhaust systems (e.g., an exhaust pipe connecting ball joint) of automobiles, aircraft, power generation equipment or the like; and to provide a heat resistant spring product.
SOLUTION: The stainless steel wire for the heat resistant spring excellent in the high temperature thermal deformation resistance and the corrosion resistance contains, by mass, 0.08-0.15% C, ≤2.0% Si, ≤2.0% Mn, 5.0-8.0% Ni, 20.0-23.0% Cr, and 0.25-0.40% N, and the balance composed substantially of Fe and inevitable impurities, satisfies following formulas: A(=10N(Mn+Cr)/Ni)=6.5-12.0%; and B(=Cr+3.3Mo+16N)=23.0-28.0%, and has a torsional strength of 800-1,300 MPa. The heat resistant spring is obtained by using the stainless steel wire.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于耐热弹簧的不锈钢丝，其耐热变形性和耐腐蚀性在高温环境中相对于在诸如发动机的高温环境中使用的耐热弹簧而言汽车，飞机，发电设备等的进气/排气系统（例如连接球接头的排气管）并提供耐热弹簧产品。
解决方案：耐高温耐热变形性和耐腐蚀性优异的耐热弹簧用不锈钢丝，以质量计含有0.08-0.15％C，≤2.0％Si，≤2.0％Mn，5.0-8.0 ％Ni，20.0-23.0％Cr和0.25-0.40％N，余量基本上由Fe和不可避免的杂质组成，满足下列公式：A（= 10N（Mn + Cr）/ Ni）= 6.5-12.0％ B（= Cr + 3.3Mo + 16N）= 23.0〜28.0％，扭转强度为800〜1300MPa。耐热弹簧采用不锈钢丝制成。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JPH1161302A NICKEL MATERIAL AND TERMINAL POST FOR EV BATTERY PRODUCED USING THE SAME 失效
公开(公告)号：JPH1161302A
公开(公告)日：1999-03-05
申请号：JP23227097
申请日：1997-08-28
申请人： DAIDO STEEL CO LTD
发明人： HONDA HISASHI , OMA HIDEYUKI
IPC分类号： C22C19/03 , H01M4/02
摘要： PROBLEM TO BE SOLVED: To produce a terminal post for an EV battery particularly by cold forging by using a material consisting of specified amts. of C and N and the balance substantially Ni. SOLUTION: An Ni material available in the form of electrolytic Ni is melted in a vacuum induction furnace, and the C content is reduced to

7. 发明专利

JPH0824942A PRODUCTION OF WIRE ROD HAVING EXCELLENT WIRE DRAWABILITY 失效
公开(公告)号：JPH0824942A
公开(公告)日：1996-01-30
申请号：JP16151094
申请日：1994-07-13
申请人： DAIDO STEEL CO LTD
发明人： OMA HIDEYUKI , HIROHATA MITSUHIRO
IPC分类号： B05D1/18 , B05D7/20 , B21C9/00
摘要： PURPOSE:To provide a wire rod having excellent wire drawability, in which the variance and excess and deficiency of coating weight is not developed at the adhesive part so that the coated film rate is suitable and uniform. CONSTITUTION:After executing a dipping treatment for coating film of the wire rod 10 into film coating liquid 8 under dipping condition according to the coating film kind, the wire rod 10 is pulled up from the film coating liquid 8 and rotated. In some case, the wire rod 10 is pulled up from the film coating liquid 8 and rotated and also, the blasting from an air blower 5 is executed toward the wire rod 10. By this method, the wire rod 10 having the suitable and uniform coating weight and excellent wire drawability is obtd.

8. 发明专利

JPS6363554A MOLTEN METAL POURING DEVICE 失效
公开(公告)号：JPS6363554A
公开(公告)日：1988-03-19
申请号：JP20997486
申请日：1986-09-05
申请人： DAIDO STEEL CO LTD
发明人： MIZUGUCHI KEIICHI , NAKADA HIROYA , YAJIMA TADAMASA , OMA HIDEYUKI
IPC分类号： B22D7/12
摘要： PURPOSE:To prevent the development of boiling in a mold caused by the air contamination and the enclosure of the air into the molten metal by shutting out the outside air by surrounding a molten metal flowing passage between a molten metal vessel and pouring tube by a fibrous forming body having heat resistance. CONSTITUTION:The fibrous forming body 7 is arranged at a gap between the bottom part of molten metal vessel 1 and the upper end of pouring tube 5, and the molten metal flowing passage formed at the gap between the molten metal vessel 1 and pouring tube 5 is surrounded by the fibrous forming body 7 to shut off the outside air. In this way, the oxidation caused by bringing the molten metal 3 into contact with the air is prevented, and also the development of boiling in the ingot making mold caused by enclosure of the air is prevented and the ingot having excellent quality is obtd.

9. 发明专利

JPH11254075A FORGING METHOD FOR STAINLESS STEEL SLEEVE 失效
公开(公告)号：JPH11254075A
公开(公告)日：1999-09-21
申请号：JP7356798
申请日：1998-03-06
申请人： DAIDO STEEL CO LTD
发明人： OMA HIDEYUKI , IWASA SHIGERU
IPC分类号： B21J5/10 , B21J3/00 , B21J13/02
摘要： PROBLEM TO BE SOLVED: To prevent a necking from generating on the outer peripheral surface of a product sleeve due to lubricating oil captured between the outer peripheral surface of a material to be worked and the inner peripheral surface of a die, or to remarkably reduce it. SOLUTION: While setting the material 20 consisting of a stainless steel in the die 22-3, by pushing first punch 24-3 and second punch 26-3 opposingly arranged each other into the die 22-3 from the reverse directions each other under the supply of the lubricating oil, the material 20 is plastically fluidized. And, when the stainless steel sleeve having a through-hole in the axial direction is subjected to forging, by forming oil drain holes 28 opening on the inner peripheral surface of the die 22-3 in the die 22-3 in a position between the push-in ends of the first punch 24-3 and the second punch 26-3. When pushing those punches 24-3 and 26-3 into the die 22-3, the lubricating oil to be captured between the outer peripheral surface of the material 20 and the inner peripheral surface of the die 22-3, is drained through the oil drain holes 28.

10. 发明专利

JPH0841697A DESCALING METHOD AND DESCALING DEVICE FOR COILED STAINLESS STEEL WIRE 失效
公开(公告)号：JPH0841697A
公开(公告)日：1996-02-13
申请号：JP17450494
申请日：1994-07-26
申请人： DAIDO STEEL CO LTD
发明人： NAKAHACHI YOSHIKAZU , OMA HIDEYUKI
IPC分类号： C25F1/06 , C25F7/00
摘要： PURPOSE:To suppress a treating agent cost and energy consumption unit to a lower level, to dispense with lower equipment and maintenance costs and to efficiently descale a coiled stainless steel wire. CONSTITUTION:The coiled stainless steel wire 4 wound to a coil form is hung by means of a hanger 5 and is immersed in this state into a neutral salt bath 2. The anode side of a DC power source 8 is connected to the hanger 5 to set the stainless steel wire side as anode. The outer peripheral side of the coil of the stainless steel wire 4 and the inner peripheral side of the coil are respectively provided with a recessed shape electrode 6 and round shape electrode 7 which are connected to the cathode side of the DC power source 8. The stainless steel wire 4 is subjected to a neutral salt electrolytic treatment at a current density maintained at about 3 to 10A/dm between the stainless steel wire 4 and the electrodes 6, 7, by which the scale formed on the surfaces of the stainless steel wire 4 is removed.

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