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91. 发明专利

JPH08243921A BLAST WORKING METHOD FOR METALLIC PRODUCT 失效
公开(公告)号：JPH08243921A
公开(公告)日：1996-09-24
申请号：JP7960895
申请日：1995-03-10
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , YAMAMOTO SHIGERU
IPC分类号： B24C1/00 , B24C11/00
摘要： PURPOSE: To provide a blast working method of a metallic product by which abrasion of a rotary blade and a projecting material can be reduced and which does not exert an adverse influence on a blast device and the metallic product to be processed. CONSTITUTION: Just before a metallic projecting material is introduced to a centrifugal projector, liquid is added at a capacity rate of 0.1 to 0.8 % to introduced capacity of the metallic projecting material, and wetting is applied to the metallic projecting material thereby, and this wetting projecting material is introduced to the centrifugal projector, and is centrifugally projected toward a metallic product.

92. 发明专利

JP2533364B2 失效
公开(公告)号：JP2533364B2
公开(公告)日：1996-09-11
申请号：JP25329388
申请日：1988-10-07
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , FUJITA SEI , MATSUMOTO MITSUYASU
IPC分类号： E04F21/00 , B08B7/02 , E04G23/08

93. 发明专利

JPH07328923A LINER FOR CENTRIFUGAL PROJECTING DEVICE OF ABRASIVE GRAIN 失效
公开(公告)号：JPH07328923A
公开(公告)日：1995-12-19
申请号：JP14551494
申请日：1994-06-03
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , SUZUKI HIROAKI
IPC分类号： B24C5/06
摘要： PURPOSE:To prevent corner sections from being abraded at an early stage and prevent the abrasive grains, which are projected from an impeller into collision with a liner, moved by a specific length on the inner face of the liner, then separated from the inner face of the liner, from colliding with the impeller or infiltrating into the impeller in the liner surrounding the impeller of an abrasive grain centrifugal projecting device and having a divergent U-shaped cross section. CONSTITUTION:A liner 4 is constituted of multiple partial liners 5-9. Projections 6a, 8a, which guide abrasive grains to proceed toward the space between the liner 4 and an impeller 3 when the abrasive grains are projected from the impeller 3 and slidingly moved by the specific length on the inner face of the liner 4 then separated, are formed on the inner face near the fold positions of the partial liners 6, 8 located at corners of the liner 4 among the partial liners 5-9 and having an L-shaped longitudinal section.

94. 发明专利

JPH06330273A PRODUCTION OF HOT DIP COATED STEEL SHEET AND ITS PRODUCTION 失效
公开(公告)号：JPH06330273A
公开(公告)日：1994-11-29
申请号：JP14266693
申请日：1993-05-21
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI
IPC分类号： C23C2/02 , C23C2/40
摘要： PURPOSE:To produce the hot dip coated steel sheet with excellent productivity by allowing the temp. of a hot rolled steel sheet to fall down to an adequate tempt., then removing the oxide scale on the surfaces in an inert gaseous atmosphere and subjecting the steel sheet to hot dip metal coating. CONSTITUTION:The high-temp. hot rolled steel sheet is directly sent to a cooling machine 6 of a hot dip coating line and its temp. is allowed to fall down to the adequate temp. necessary for coating the steel sheet with molten metal at the time of plating the surfaces of the high-temp. hot rolled steel sheet W produced by hot rolling with the metal, such as Zn, Sn, Pb or Al. This steel sheet is then sent into a casing 1 of the inert gaseous atmosphere of inert gas, such as N2 or others, from an inert gaseous atmosphere supplying device 4 and the oxide scale on the steel sheet surfaces is removed by shot blasting in this casing 1; thereafter, the steel sheet is plated with the molten metal with excellent adhesive power by a hot dip metal coating machine in the clean state in which the surfaces are not reoxidized by the inert gaseous atmosphere. The hot rolled steel sheet is subjected to the hot dip metal coating by reheating after the steel sheet is coiled and cooled and, therefore, the hot dip coated steel sheet is produced with the good thermal efficiency and productivity.

95. 发明专利

JPH06297132A METHOD FOR SHAKE OUT OF CASTING 失效
公开(公告)号：JPH06297132A
公开(公告)日：1994-10-25
申请号：JP11387193
申请日：1993-04-16
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI
IPC分类号： B22D29/00
摘要： PURPOSE:To reduce the shake out time of a cast product, and to provide the original metallic gloss of the casting without damaging the casting surface, by projecting the shot at the respectively prescribed speeds of projection to remove most of the attached sand on the surface of the casting in the first process, removing the rest of the attached sand on the surface of the casting in the second process, and polishing the skin of the casting. CONSTITUTION:Products to be treated made of FCD material are placed in a shot blast equipment of rotary drum type. The steel shot whose mean grain size is 1.4-2.5mm is projected at the projection speed of 50-70m/sec. in the first process to remove the sand attached to the products. After the cleanliness reaches about 70%, the products to be treated are carried to the second process. In this process, the steel shot whose mean grain size is 0.3-1.3mm is projected at the projection speed of 70-100m/sec., and the rest of the attached sand on the surface of the products to be treated is almost completely removed, and at the same time, the casting surface is polished to provide the original metallic gloss of the casting.

96. 发明专利

JPH0531443A METHOD FOR REMOVING COATING FILM AND PUTTY ON VEHICLE 失效
公开(公告)号：JPH0531443A
公开(公告)日：1993-02-09
申请号：JP21793791
申请日：1991-08-02
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , NAGASHIMA ETSUICHI
IPC分类号： B05D3/12 , B05D7/14
摘要： PURPOSE:To remove the coating film and putty on a vehicle by a method by which operation efficiency can be increased and working environment can be improved when the coating film of the vehicle is regenerated or repaired. CONSTITUTION:Hard shorts of 0.2-0.8 mm diameter are accelerated to 40-80m/sec speed and collided at 90-45 deg. angle against the surface of a vehicle to be subjected to the removal of the coating film and putty to expose the base steel sheet.

97. 发明专利

JPH0457472B2 失效
公开(公告)号：JPH0457472B2
公开(公告)日：1992-09-11
申请号：JP28999886
申请日：1986-12-05
申请人： SINTOKOGIO LTD
发明人： OOTA KUNIO , ROKUTANDA HITOSHI
IPC分类号： B24C1/00 , B24C5/06 , B24C7/00

98. 发明专利

JPH0446711B2 失效
公开(公告)号：JPH0446711B2
公开(公告)日：1992-07-30
申请号：JP15499685
申请日：1985-07-12
申请人： SINTOKOGIO LTD
发明人： OOTA KUNIO , ROKUTANDA HITOSHI
IPC分类号： B24C3/12 , B24C9/00

99. 发明专利

JPH0445298B2 失效
公开(公告)号：JPH0445298B2
公开(公告)日：1992-07-24
申请号：JP11986286
申请日：1986-05-24
申请人： SINTOKOGIO LTD
发明人： OOTA KUNIO , ROKUTANDA HITOSHI , USHIDA KOJI
IPC分类号： B24C9/00

100. 发明专利

JPH0445870A METHOD FOR REMOVING LUBRICANT FOR DRAWING FROM WIRE OR BAR 失效
公开(公告)号：JPH0445870A
公开(公告)日：1992-02-14
申请号：JP15133790
申请日：1990-06-08
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI
IPC分类号： B05D3/12
摘要： PURPOSE:To remove a lubricant for drawing from a wire or bar without requiring post-treatment after degreasing by packing a vessel with a cleaning material obtd. by breaking specified rubber into granular chips, compressing the cleaning material and passing the wire or bar with the lubricant sticking to the surface through the cleaning material. CONSTITUTION:When a lubricant for drawing is removed from a wire or bar 4, a vessel 1 is packed with a cleaning material 2 obtd. by breaking rubber having >=30 HS hardness and such performance of a rubber eraser as >=70% erasing ability into granular chips and pressing force is applied to the top of a pressing lid 3 in the direction of the arrow A to compress the cleaning material 2. The wire or bar 4 with the lubricant sticking to the surface is inserted into through holes 5, 5 in the vessel 1 and moved in the direction of the arrow B under pressing force applied to the lid 3 in accordance with the wire or bar 4.

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