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11. 发明专利

JPS6355383B2 失效
公开(公告)号：JPS6355383B2
公开(公告)日：1988-11-02
申请号：JP10567482
申请日：1982-06-18
申请人： SUMITOMO METAL IND
发明人： NISHIGUCHI MASARU , FUKUYASU TOMIHIKO , TANI TAKAYUKI , HAMATE HIROYUKI
IPC分类号： B21D41/04 , B21K21/12

12. 发明专利

JPS61289930A FORMING METHOD FOR HOLLOW SPHERICAL ITEM 失效
公开(公告)号：JPS61289930A
公开(公告)日：1986-12-19
申请号：JP13124885
申请日：1985-06-17
申请人： SUMITOMO METAL IND
发明人： FUKUYASU TOMIHIKO , NISHIGUCHI MASARU
IPC分类号： B21D51/08
摘要： PURPOSE:To enable the forming with high efficiency without causing any buckling by squeezing the opening part of a blank with its forging with driving with turning by holding the boss part of a cup shaped blank and then by finishing it. CONSTITUTION:The boss part 31 of a cup shaped blank 3 is held by the knockout 43 provided on the lower die 42 of a rotary forging machine 4. The blank 3 is subjected to a rolling reduction with rotating the upper die 41 around the slant shaft by rotatively driving the cup shaped blank 3 around its center shaft. With this movement a hollow spherical body 5 is formed by subjecting to the squeezing by forging on the opening part 32 of the blank 3. Finally the squeezing part 51 and boss part 52 are finished by machining. A thin product can thus be formed with good yield.

13. 发明专利

JPS60261635A MANUFACTURE OF THIN-WALLED CUP-SHAPED ARTICLE 失效
公开(公告)号：JPS60261635A
公开(公告)日：1985-12-24
申请号：JP11872684
申请日：1984-06-08
申请人： SUMITOMO METAL IND
发明人： FUKUYASU TOMIHIKO , NISHIGUCHI MASARU
IPC分类号： B21J1/02
摘要： PURPOSE:To manufacture a thin-walled cup-shaped article in a good yield and at a low cost by a simple process by forming a plate-shaped rough ground having a necessary thickness distribution by rotational forging, and subsequently, finishing it in a shape of a cup by means of drawing. CONSTITUTION:With regard to a manufacture of a cup-shaped article having an uneven thickness in a section of the axial direction, first of all, rotational forging is executed by using a die 9 for rotating around a vertical shaft A, and a punch 6 for rotating around an inclined shaft B. In this case, the conical surface of the punch 6 is brought into contact with a base material set on the die 9, the axis B is inclined by an angle beta, and a plate-shaped rough ground 12 is formed. Subsequently, the plate-haped rough ground 12 which has been formed is finished to a desired thin cup-shaped article 15 by using a punch 13 of a punch type and a die 14. In this way, the thin cup-shaped article can be manufactured in a good yield and at a low cost by a simple process.

14. 发明专利

JPS5852453B2 JPS5852453B2 - 失效
公开(公告)号：JPS5852453B2
公开(公告)日：1983-11-22
申请号：JP7164578
申请日：1978-06-13
申请人： Sumitomo Metal Ind
发明人： OKAGATA YOSHINORI , TATSUWAKI MASAO , NISHIGUCHI MASARU
IPC分类号： B21B5/00 , B21H1/06

15. 发明专利

JPS57146499A COMPRESSION FORMING DEVICE FOR PULVERULENT BODY 失效
公开(公告)号：JPS57146499A
公开(公告)日：1982-09-09
申请号：JP3202281
申请日：1981-03-06
申请人： SUMITOMO METAL IND
发明人： NISHIGUCHI MASARU
IPC分类号： B22F3/02 , B22F3/035 , B30B11/02 , B30B15/02
摘要： PURPOSE:To prevent generation of shearing frictional stress at the time of pulling out a compression formed pulverulent body and prevent occurrence of cracking and breakage of the formed body by splitting a die assembly in radial direction and sliding a ring member on the die assembly through a tapered face. CONSTITUTION:In compression forming of pulverulent body, a die assembly 14 is divided into plural parts in radial direction along the outer circumference, and a split ring 14b is fitted to the side of outer circumference of the split die body 14a. The ring member 13 is pulled downward by operating a hydraulic cylinder 21 and radial face pressure greater than that operating when pressing the pulverulent body is applied on the outer circumference of the die assembly 14 through the tapered face. Powder feeding and mass cutting are made under this condition, and the pulverulent body is compressed by lowering an upper punch 11. When the stopper 22 comes into contact with the upper face of the ring member 13, the upper punch 11 goes up and restraining force that has been applied to the die assembly 14 is released. Accordingly, the formed body can easily be pulled out without undergoing resistance due to shearing frictional stress.

16. 发明专利

JPS55144349A PRODUCTION OF FORGED WHEEL 失效
公开(公告)号：JPS55144349A
公开(公告)日：1980-11-11
申请号：JP5289279
申请日：1979-04-28
申请人： SUMITOMO METAL IND
发明人： TSUMURA KAZUO , NISHIGUCHI MASARU , UEKI NAOSHIGE , KOJIMA MASAYASU
IPC分类号： B21K1/38
摘要： PURPOSE:To enable the obtaining of the blank wheel of tubed wheels through two processes of pressing by pre-working a heated billet to approximately conical form then forming the same to cup form. CONSTITUTION:The billet 1 cut from an ingot is heated and sent to the 1st forging process. Here, the billet 1 is molded to the preform 2 of the conical shape in which the ring part 2a inclines by the required angle alpha deg. to the rim part 2b, by upper and lower dies 3, 4. Thence, the respective portions of the preform 2 are drawn by upper and lower dies 6, 7 in the 2nd forging process. Also the ring part 5a is so bent as to become roughly rectangular to the rim part 5b, whereby the blank wheel 5 of cup form for finish working is obtained.

17. 发明专利

JPS55136535A ROUGHENING METHOD IN DIE FORGING 失效
公开(公告)号：JPS55136535A
公开(公告)日：1980-10-24
申请号：JP4326779
申请日：1979-04-10
申请人： SUMITOMO METAL IND
发明人： HISAMITSU SHIGEYUKI , ARAKI KENJI , NISHIGUCHI MASARU
IPC分类号： B21J1/04
摘要： PURPOSE:To obtain rough blanks of proper volume distribution at high precision, by forming plural protruding parts and recess parts on the die sinking faces of top part and bottom part, and absorbing the elongation of wall thickness of the blank compressed by the protruding parts in the recess parts. CONSTITUTION:Plural protruding parts 3 and one long protruding part 3' are formed in the axial direction of shade sinking face face 2A of a top die 2. Similarly, protruding parts 5, 5' are opposedly formed on the die sinking face 4A of a bottom die 4. By using these protruding parts, recess parts are formed in the die sinking faces 2A, 4A, and compression cavities 6, 6' and bulge-out cavity 7 of a blank S are formed. Compression is applied to the blank S of square section or the like which rotates in the compression cavity 6, and the elongation of the wall thickness of the blank S due to compression is absorbed in the bulge-out cavity 7 formed by the recess parts. When this operation is repeated until the cavity 7 is filled up with the blank wall, a rough blank of a proper volume distribution having a part of which sectional area is larger than the blank may be obtained.

18. 发明专利

JPS54157767A RING ROLLING MILL CONTROL 失效
公开(公告)号：JPS54157767A
公开(公告)日：1979-12-12
申请号：JP6617078
申请日：1978-05-31
申请人： SUMITOMO METAL IND
发明人： OKAKATA YOSHINORI , TAWARA AKIHIRO , TATSUWAKI MASAO , NISHIGUCHI MASARU
IPC分类号： B21H1/06
摘要： PURPOSE:To provide a high roundness annular product by eliminating conventional oval-shape divergence, ring rolling miss is controlled so that both axial rolls are fixed and a specific control method is used in a special case. CONSTITUTION:In wagner-type ring rolling mill, when the material to be rolled 1a is expanded in diameter to L1 by the main roll 1 and the mandrel 3 reduction, if L1 plus wall thickness of the material 1a is below base line L0 of axial roll 4u, 4l, the axial rolls 4u, 4l are set and fixed for rolling at a position close to the side of the mandrel 3 by a small distance(a) from the inner periphery of the material 1a to be rolled. If the material is expanded to be dislocated from the axial rolls 4u, 4l, the axial frame 4 is moved outwardly from the roll 2, as specified separately, during some intermediate rolling period. This rolling process prevents conventional oval-shepe divergence and provides annular products of high roundness.

19. 发明专利

JPH05221601A HYDROGEN OCCLUDING POROUS MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH05221601A
公开(公告)日：1993-08-31
申请号：JP2537592
申请日：1992-02-12
申请人： SUMITOMO METAL IND
发明人： ARAKAWA TAKASHI , NISHIGUCHI MASARU , ASABE KAZUTAKA
IPC分类号： B22F5/00 , B22F3/11 , C01B3/00 , C22C1/08
摘要： PURPOSE:To provide a hydrogen occluding porous material resistant to the pulverization of hydrogen occlusion alloy powder caused by the occlusion and release of hydrogen gas, having high specific surface area and keeping sufficiently high mechanical strength even at a high void ratio and provide a process for the production of the porous material. CONSTITUTION:The objective porous material contains hydrogen occlusion alloy powder randomly dispersed in a porous material having three-dimensionally and randomly distributed open pores and sintered to form an integral structure. The material can be produced by mixing hydrogen occlusion alloy powder with metal powder and/or metal fiber and forming and sintering the mixture.

20. 发明专利

JPS63238939A METHOD FOR CONTROLLING ROTARY FORGING MACHINE 失效
公开(公告)号：JPS63238939A
公开(公告)日：1988-10-05
申请号：JP7339387
申请日：1987-03-27
申请人： SUMITOMO METAL IND
发明人： FUKUYASU TOMIHIKO , NISHIGUCHI MASARU
IPC分类号： B21J9/02 , B21J5/00 , B21J9/20
摘要： PURPOSE:To enable forming close to the upper limit of the device capacity, to effectively use the equipment and to shorten the forming time by controlling rolling reduction speed and rotating speed so as to increase the torque bearing the majority of forming force to the max. extent. CONSTITUTION:An upper die 1 is freely rotated centering around the rotary shaft C inclined at inclination alpha and a lower die 2 is driven by rotating with the number omega of revolutions, torque T. The material 3 having mean diameter (rm) is placed on the lower die 2 and the upper die 1 is subjected to rolling reduction with rolling reduction speed (v) and rolling reduction force (p) to subject the material 3 to upset forming. In this case, the torque T during forming is increased close to the limitation of the device capacity to shorten the time necessary for forming. Namely, a

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