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1. 发明专利

JPH04209913A MANUFACTURE OF EXHAUST VALVE FOR LARGE DIESEL ENGINE 失效
公开(公告)号：JPH04209913A
公开(公告)日：1992-07-31
申请号：JP34089990
申请日：1990-11-30
申请人： SUMITOMO METAL IND , KAWASAKI HEAVY IND LTD
发明人： IWATA KENJI , NISHIGUCHI MASARU , FUKUYASU TOMIHIKO , MIKI YOSHINOBU , TOKUOKA TETSUO , SAKAI KUNIMASU
IPC分类号： F01L3/02 , B21J9/08 , F01L3/24 , F02B3/06
摘要： PURPOSE:To obtain an exhaust valve of an expected property easily and efficiently with a press of small capacity ' by forming a forging rough part, concerning to a seat part, in a clad part and also protrusion-molding a part in an opposite side to the clad part, thereafter placing the clad part in a lower mold side by opening rotary forging to perform warm working. CONSTITUTION:An exhaust valve for a large Diesel engine has a clad part of high alloy rich in heat resistance and corrosion resistance in a seat part 1 relating to a main unit 2. Here, a forging rough part, corresponding to the seat part 1, is formed in a clad part and also protrusion-forming a part in an opposite side to the clad part formed. Thereafter, the clad part is placed in a lower mold side by opening rotary forging to perform warm working in a range of 950 to 850 deg.C within 5min further as necessary to apply required heat treatment. That is, the forging rough part concerning to the seat part 1 is formed in the clad part of arranging inconel 718 or the like and also protrusionmolding the part in the opposite side to the clad part. In this way, the warm working is limited to only the seat part 1 necessary for forging to reduce force required for work.

2. 发明专利

JPH02255268A PRODUCTION OF DISK MADE OF SUPER HEAT RESISTING ALLOY 失效
公开(公告)号：JPH02255268A
公开(公告)日：1990-10-16
申请号：JP7712189
申请日：1989-03-28
申请人： KAWASAKI HEAVY IND LTD , SUMITOMO METAL IND
发明人： NISHIYAMA YUKIO , TANAKA TERUJI , TOTANI YASUTAKA , NISHIGUCHI MASARU
IPC分类号： B21K1/32 , B22D13/04 , B22D27/08
摘要： PURPOSE:To produce the the turbine disk, etc., with high productivity at a low cost by pouring the melt of a super heat resisting alloy into a casting mold in a vacuum or inert gaseous atmosphere, applying an external force to the casting mold and oscillation to the mold to prepare a casting preform, then rotary forging the preform. CONSTITUTION:The melt 11 of the super heat resisting alloy is melted in the vacuum or inert gaseous atmosphere. This molten metal 11 is poured into the casting mold (metallic mold) 8 in the vacuum or inert gaseous atmosphere. An eccentric centrifugal force is applied as the external force to the casting mold 8 by using a leg shaft 4, a metallic mold imposing table 5, etc., to oscillate the mold. The casting preform having fine crystal grains are formed by applying the external force. This preform is rotary forged. The crystal grain size of the preform is made to =10 /sec. The finer crystal grains arising from the dynamic recrystal are formed during the casting and the ductility is improved.

3. 发明专利

JPH04209914A EXHAUST VALVE FOR MARINE ENGINE 失效
公开(公告)号：JPH04209914A
公开(公告)日：1992-07-31
申请号：JP34089890
申请日：1990-11-30
申请人： SUMITOMO METAL IND , KAWASAKI HEAVY IND LTD
发明人： IWATA KENJI , NISHIGUCHI MASARU , FUKUYASU TOMIHIKO , NAKANO KATSUHIKO , TOKUOKA TETSUO , SAKAI KUNIMASU
IPC分类号： F01L3/02
摘要： PURPOSE:To work a metal of heat resistance and oxidation resistance at relatively low temperature to make aging treatment and to contrive high hardness and long life integrating metal of different kinds with a main unit, thereafter performing solution treatment and warm forging further aging treatment. CONSTITUTION:An exhaust valve is constituted by arranging a heat resistant steel material in a main unit and further metal of different kinds rich in wearing resistance and oxidation resistance at high temperature in a seat part. After the metal of different kinds is integrated with the main unit, solution treatment and warm forging are performed further to perform aging treatment. That is, as compared with that the conventional one is formed into a compound structure by finally padding a material of different kind welded, a maximum feature is provided in the point that warm finish forging following the solution treatment is applied after previously forming the compound structure. A composition of the metal of different kinds is left as adequately set, so that very high hardness can be obtained by aging treatment after finishing forging.

4. 发明专利

JP2002219547A ANVIL FOR FREE-FORGING AND HOT FREE-FORGING METHOD USING THE SAME 失效
公开(公告)号：JP2002219547A
公开(公告)日：2002-08-06
申请号：JP2001011568
申请日：2001-01-19
申请人： SUMITOMO METAL IND
发明人： TAJIMA JUNPEI , NISHIGUCHI MASARU , AMAMOTO MITSUHIRO
IPC分类号： B21J13/06 , B21J5/00
摘要： PROBLEM TO BE SOLVED: To prevent generation of defects such as cracks by giving uniform strain to the surface of a work to prevent it from bringing about a dead metal zone. SOLUTION: A plurality of ridge lines 1 a having a height h stipulated by (1/8)w

5. 发明专利

JPH11320014A DEBURRING WORK METHOD OF CRANK SHAFT FORGING AND ITS CUTTER DIE 失效
公开(公告)号：JPH11320014A
公开(公告)日：1999-11-24
申请号：JP13870898
申请日：1998-05-20
申请人： SUMITOMO METAL IND
发明人： TAMURA KENJI , OHASHI MASAHIRO , NISHIGUCHI MASARU , FUKUYASU TOMIHIKO , YAMAMOTO TOMOAKI
IPC分类号： B23D79/00 , B21J5/02 , B21J13/00 , B21J13/02 , B21K1/08 , F16C3/08
摘要： PROBLEM TO BE SOLVED: To prevent a counter weight from inclination and to obtain a highly precise crank forging by cutting a burr of a part on a crank pin side in advance, successively cutting a burr of a part on a counter crank pin side and thereafter, cutting a burr of other parts. SOLUTION: In the case that a part between counter weights 8a, 8b adjoining and pinching a crank pin 7 is divided into a crank pin side (mesh part) and a counter crank pin side (hatched part), a burr 3a of a crank pin side is cut at first, a burr 3b of a counter crank pin side part is cut and thereafter, a burr 3c of other part is cut. By this method, the inclination of the counter weight 8a, 8b is reduced to improve the product quality. A burr cutting length ratio (L1/L0) is preferably made to >=0.1 to

6. 发明专利

JPH0483811A MANUFACTURE OF POROUS COMBINED MATERIAL 失效
公开(公告)号：JPH0483811A
公开(公告)日：1992-03-17
申请号：JP20061190
申请日：1990-07-27
申请人： SUMITOMO METAL IND
发明人： KUBO TOSHIHIKO , NISHIGUCHI MASARU
IPC分类号： C04B38/00 , B22F3/11 , B22F3/24 , B22F5/00 , B22F7/04
摘要： PURPOSE:To manufacture a combined material being controllable in pore distribution and composition by beforehand introducing pores at the time of sintering a paste-like composition composed of powder material having super plastic characteristic, after that, applying compression load to make the sintered body dense and controlling so as to reduce the porosity. CONSTITUTION:Apatite hydroxide powder and titanium alloy powder are mixed at the prescribed blending ratio and by adding paste agent, this is made to the uniform paste-like composition by wet kneading and 10 layers are laminated on surface of a Ti alloy basic material 1 with nozzle method. Composition in each layer is different in some degree and inclined composition laminated layers 2 are formed. The inclined composition laminated layers 2 are burnt and successively, super plastic work is executed with a press to form the inclined composition laminated layers 2 into inclined composition dense layer 3. Successively, the paste of apatite hydroxide powder is laminated to five layers with the nozzle method and burnt to uniformize the pore distribution in the apatite hydroxide layer 4 in the case of forming the porous apatite hydroxide layer 4 on the inclined composition dense layer 3.

7. 发明专利

JPH03240939A MANUFACTURE OF HIGH DUCTILITY AND HIGH TOUGHNESS TITANIUM ALLOY 失效
公开(公告)号：JPH03240939A
公开(公告)日：1991-10-28
申请号：JP3779090
申请日：1990-02-19
申请人： SUMITOMO METAL IND
发明人： OKADA MINORU , NISHIGUCHI MASARU , SATO YASUHIRO
IPC分类号： C22F1/18 , C22F1/00
摘要： PURPOSE:To manufacture a high ductility and high toughness Ti alloy by subjecting a Near beta type Ti alloy to working in a specified temp. range at a specified draft and strain rate, furthermore subjecting it to wirking in a different temp. range at a different draft and strain rate and thereafter executing soln. treatment in a specified temp. range. CONSTITUTION:A Near beta type Ti alloy is subjected to working in the temp. range of the beta transformation point to (the beta transformation point + 100 deg.C) in such a manner that the draft by single heating is regulated to >=40% and the strain rate is regulated to the range of 10 to 10 /sec. Next, this alloy is furthermore subjected to working at the beta transformation point or below in such a manner that the draft is regulated to 15 to 50% and the strain rate is regulated to the range of 5X10 to 10 /sec and is subjected to soln. treatment in the temp. range of the beta transformation point to (the beta transformation point - 70 deg.C). If required, after the soln. treatment, the alloy is moreover subjected to aging treatment in the temp. range of 400 to 650 deg.C. In this way, the Ti alloy in which strength, ductility and toughness are well-balanced and high value is obtainable in the above all can be manufactured.

8. 发明专利

JPH03226586A PRODUCTION OF MULTILAYERED STRUCTURE BY EXTRUSION 失效
公开(公告)号：JPH03226586A
公开(公告)日：1991-10-07
申请号：JP2033190
申请日：1990-01-30
申请人： SUMITOMO METAL IND
发明人： KUBO TOSHIHIKO , NISHIGUCHI MASARU , NAKADA YOSHIKAZU
IPC分类号： B32B37/15 , B22F3/20 , B22F7/04 , B28B3/20 , C23C24/08
摘要： PURPOSE:To produce a fine and uniform laminated material of intermetallic compound with certainty by successively extruding and laminating plural pasty compositions prepared by uniformly mixing dissimilar fine powders, respectively, on a substrate and solidifying the resulting extruded layers. CONSTITUTION:Plural pasty compositions 16 respectively prepared by uniformly mixing dissimilar fine powders by regulating blending ratio are successively extruded through nozzle holes 12 of nozzles 10 and laminated on a substrate 20. The resulting extruded layers 14 are solidified. By the above procedure, the desired distribution of composition is attained in the direction of lamination. The thicknesses of the extruded layers 14 are regulated to values between micron order and several tens of microns, respectively. The blending ratios of the dissimilar fine powders in the pasty compositions are changed by stages in the direction of the thickness of the multilayered structure. After solidification, the resulting thick-film burnt body is pressurized to obtain more denseness. By this method, the laminated material in which the distribution of composition is intentionally provided can be produced.

9. 发明专利

JPH0289532A ISOTHERMAL FORGING METHOD FOR TI ALLOY 失效
公开(公告)号：JPH0289532A
公开(公告)日：1990-03-29
申请号：JP24372088
申请日：1988-09-27
申请人： SUMITOMO METAL IND
发明人： NAKASE KAZUO , NISHIGUCHI MASARU , SATO YASUHIRO
IPC分类号： B21J5/00
摘要： PURPOSE:To uniformize and stabilize mechanical properties by performing isothermal forging of a blank forged at a forge ratio higher than a specified value at a suitable forge ratio. CONSTITUTION:Stock is forged in advance at a forge ratio higher than 50% of manufactured a blank and this blank is forged isothermally at a suitable forge ratio. In this case, the stock is forged in advance isothermally at a forge ratio higher than 50% because the mechanical properties must be uniformized and stabilized independently of the forge ratio obtained by the isothermal forging performed later. This method can give uniformized and stabilized mechanical properties when products complicated in shape are manufactured by isothermal forging from Ti alloy.

10. 发明专利

JPH01166842A MANUFACTURE OF RADIAL BRANCHED FORGING 失效
公开(公告)号：JPH01166842A
公开(公告)日：1989-06-30
申请号：JP32488187
申请日：1987-12-21
申请人： SUMITOMO METAL IND
发明人： NISHIGUCHI MASARU , FUKUYASU TOMIHIKO , TOTANI YASUTAKA
IPC分类号： B21J5/02 , B21K3/00
摘要： PURPOSE:To reduce a remarkable burr amt. and to improve the yield by forming the forging preform having plural radial branches from a stock by a closed forging method and executing its finish forming by burring forging method. CONSTITUTION:A stock 10 is heated at specified temp., charged into the container formed by upper die 14 and lower die 15, pushed in by its pressurizing by a punch 17 by pressing the upper and lower dies 14, 15 by a hydraulic slide type locking mechanism via a groove 16 and the forged preform having plural radial branches 11 is formed. This forged preform 12 is subjected to finishing by a burring forging method, made a rotor hub forming product 18 and a burr 19 is removed by gas cutting, etc., finally. The forging having the plural radial branches of the rotor hub, etc., for a helicopter is thus manufactured with good yield by reducing its forming load.

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