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1. 发明专利

JPH10216574A METHOD AND APPARATUS FOR COATING THIN FILM OF HIGHLY VISCOUS RAPID CURING TYPE COATING MATERIAL 失效
公开(公告)号：JPH10216574A
公开(公告)日：1998-08-18
申请号：JP2064597
申请日：1997-02-03
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： FUNATSU SHINICHI , SATO HIROTAKA , KAYAZONO YOSHIHISA , KUSANO YOSHITAKA , KAWASE YOSHIYUKI , ENDO MASAHIRO
IPC分类号： B05D1/02 , B05B7/02 , B05B7/10
摘要： PROBLEM TO BE SOLVED: To cost continuously a film of a thin uniform thickness by a method wherein highly viscous coating material is supplied from a nozzle with a screw type coating pump capable of supplying the coating material by an air pump of a specific pressure, and a plurality of coating material are applied with fogging by atomization mixing with high speed vortex current. SOLUTION: The pressure of air for fogging of coating material by atomization mixing is raised to 2-4kg/cm with an air compressor 1, and then supplied to a nozzle 9 wherein a plurality of coating materials can be sprayed by atomization mixing with high speed vortex current of air. Besides, highly viscous curing type coating material is introduced to a nozzle 9 wherein a plurality of coating materials are fogged by atomization mixing with high speed vortex current of air with a screw type pump for main agent coating material 5 and a screw type pump for curing agent coating material 8. Though highly viscous coating material is discharged from the nozzle 9 by 50-300g/min discharge, since the air is supplied as high speed vortex current, the coating material is fogged by atomization mixing. Thereby, a film of uniform thickness of several tens μm is continuously coated.

2. 发明专利

JPH08300556A POWDER COATED STEEL TUBE 失效
公开(公告)号：JPH08300556A
公开(公告)日：1996-11-19
申请号：JP12884895
申请日：1995-05-01
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： FUNATSU SHINICHI , SUEUCHI YASUHIRO , SASAKI TOSHIYUKI , ENDO MASAHIRO , KAWASE YOSHIYUKI , ANDO TOYOO , KUSANO YOSHITAKA
IPC分类号： F16L9/14 , B05D7/14 , B32B15/08
摘要： PURPOSE: To provide a powder coated steel tube to which powder polyester is applied for the purpose of improving its bonding properties. CONSTITUTION: A powder epoxy layer 2 and a powder polyester layer 3 are laminated successively on the surface of a steel tube 1 to which ground coating such as blast funishing is applied. Thus superior bonding properties are provided, and neither oxygen nor rainwater is permeated from flaws or ends when the steel tube is used outdoors to keep superior resistance to corrosion for a long period of time.

3. 发明专利

JPH05305695A 失效
公开(公告)号：JPH05305695A
公开(公告)日：1993-11-19
申请号：JP11133192
申请日：1992-04-30
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： UEHARA MASAAKI , MURAKI MASANORI , SUZUKI TAKANORI , KUSANO YOSHITAKA
IPC分类号： B32B3/02 , B32B15/08 , B32B15/085
摘要： PURPOSE:To prevent the deterioration of the adhesive capacity of the end part of a corrosion proof coating layer, in a steel sheet pile with a corrosion proof covering wherein a sheet like corrosion proof coating layer is bonded to the adhesive powder polyolefin resin layer applied to a steel sheet pile, by applying a polyolefin resin to the steel sheet pile up to the leading end part of the joint part thereof. CONSTITUTION:A steel sheet pile with a corrosion proof covering is obtained by coating a steel sheet pile 1 with an adhesive powder polyolefin resin 2 and bonding a polyolefin resin sheet 3 to the polyolefin resin layer as a corrosion proof coating layer. In this steel sheet pile, an adhesive powder polyolefin resin 2 is applied to the exposed surface part of a joint part not coated with the corrosion proof coating layer 3. This adhesive powder polyolefin resin 2' is allowed to flow by bonding the polyolefin resin sheet 3 under pressure to be made thick in the periphery of the end part of the polyolefin resin sheet 3 to make the difference in level with the end part of the polyolefin resin sheet 3 hard to generate.

4. 发明专利

JPH0829414A CURING JUDGING METHOD FOR HUMIDITY-CURING PAINT FILM AND ITS DEVICE 失效
公开(公告)号：JPH0829414A
公开(公告)日：1996-02-02
申请号：JP34822192
申请日：1992-12-28
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： SASAKI TOSHIYUKI , TOMIOKA KENICHIRO , KAWASE YOSHIYUKI , KUSANO YOSHITAKA
IPC分类号： G01N33/44 , C09D7/80 , C09D7/14
摘要： PURPOSE:To reduce the work burden, and highly accurately estimate by gathering and integrating a temperature and humidity at a constant time pitch, and judging a curing condition corresponding to prepossessed data. CONSTITUTION:An image display device 2 is arranged on an arithmetic processing unit 1, and a printer 3 and a temperature-humidity sensor 4 are connected to each other. Time data necessary for curing is possessed, and temperature-humidity data after painting is gathered and integrated at a pitch less than one hour from at least two or more painting objects, and a program is constituted so as to output a curing condition with every painting object. Therefore, gathered and integrated temperature-humidity data of the painting objects is checked up with the curing time in preinvestigated respective temperatures and humidities, and the curing condition is judged. Therefore, there is no need to measure the painting objects one by one like a pencil hardness measuring method, and recess and projection on the paint film surface and irregular reflection by a pigment are not generated like an infrared ray reflecting method.

5. 发明专利

JPH09327826A METHOD AND DEVICE FOR COVERING STEEL MATERIAL TO BE COVERED WITH COVERING MATERIAL 失效
公开(公告)号：JPH09327826A
公开(公告)日：1997-12-22
申请号：JP14894796
申请日：1996-06-11
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： ISHIDA MASAMI , CHIKADA KYOJI , YOSHIDA KOTARO , KUSANO YOSHITAKA , ANDO TOYOO , WADA MORIHIRO
IPC分类号： B05D7/14 , B29C33/02 , B29L9/00 , B32B15/08
摘要： PROBLEM TO BE SOLVED: To prevent the oxidation of a steel pipe due to the residual air at the covering part of materials to be covered from developing by a method wherein covering material made of a particulate thermoplastic resin is supplied and filled in a gap, which is formed between the outer peripheral surface of steel pipes to be covered and the inner surfaces of employed split molds, and heated to be fusingly bonded and solidified onto the outer peripheral surface of the steel pipes to be covered. SOLUTION: By installing an annular burner so as to cover the butt-weld WP of steel pipes to be covered Pa and Pb and its peripheral part, the above-mentioned parts are heated with the annular burner for a predetermined period of time. Next, the annular burner is removed from the steel pipes Pa and Pb to be covered and then a split mold 8 is installed so as to cove the heated weld WP and its peripheral part. Next, a particulate thermoplastic resin CP is supplied from a covering material supplying hole 6 of a split mold 8 and filled in a gap A formed between the inner surface of the split mold and the outer surface of the steel pipes to be covered Pa and Pb. Then, the resin CP is bonded with the weld WP and its peripheral part by fusing the proper amount of the filled resin CP. Further, by allowing to gradually cool the split mold 8, the split mold 8 is removed so as to form the covering with the resin CP.

6. 发明专利

JPH08300554A POWDER COATED STEEL TUBE 失效
公开(公告)号：JPH08300554A
公开(公告)日：1996-11-19
申请号：JP12884695
申请日：1995-05-01
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： FUNATSU SHINICHI , SUEUCHI YASUHIRO , SASAKI TOSHIYUKI , ENDO MASAHIRO , KAWASE YOSHIYUKI , ANDO TOYOO , KUSANO YOSHITAKA
IPC分类号： B05D7/24 , B05D7/14 , B32B15/08 , B32B27/30 , B32B27/38
摘要： PURPOSE: To provide a powder coated steel tube coated with powdered fluorine for the purpose of improving its bonding properties. CONSTITUTION: A powder epoxy layer 2 and a powder fluorine layer 3 are laminated successively on the surface of a steel tube 1 to which ground coating such as blast finishing is applied. Thus superior bonding properties are provided, and oxygen or rainwater is not permeated from flaws or ends when the steel tube is used outdoors to keep superior resistance to corrosion for a long period of time.

7. 发明专利

JPH06210234A JOINTER FOR CONTINUOUSLY PRODUCING PLASTIC COATED METAL PIPE 失效
公开(公告)号：JPH06210234A
公开(公告)日：1994-08-02
申请号：JP29435192
申请日：1992-11-02
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： FUNATSU SHINICHI , KUSANO YOSHITAKA , ORIKAWA TADASHI
IPC分类号： B05B13/02 , B05C13/00 , B29C63/00
摘要： PURPOSE:To shorten the time taken for attachment and detachment, reduce labor and to enable detection even when iron is indiscernible by a magnetic sensor is used as material quality by forming a single end having a bowl-shaped wire insertion part and a body part and tapering the body part so that reflected ultrasonic waves do not return to a range finder. CONSTITUTION:A joiner has a single end wherein an insertion part is constituted of wires 2 formed into a bowl-shape and is fixed to a metal pipe 1' by the spring-back of the wires 2 while the other end thereof consists of a taper part 3 and a body part 7 constituted of a cylindrical part 4 and bent parts 5, 6 and, when the ultrasonic waves 9 emitted from an ultrasonic range finder 8 are applied to the taper part 3 of the body part 7, reflected waves change in the angle of propagation does not return to the ultrasonic range finder 8, and is not detected. Therefore, the distance becomes infinite, and the space between metal pipes 1, 1' is confirmed. Therefore, even when the same metal is used in the metal pipes 1, 1' of the joiner, the space between both metal pipes 1, 1' can be confirmed.

8. 发明专利

JPH1144394A MANUFACTURE OF HEAT INSULATING PIPE 失效
公开(公告)号：JPH1144394A
公开(公告)日：1999-02-16
申请号：JP20268197
申请日：1997-07-29
申请人： NITTETSU BOSHOKU KK , NIPPON STEEL CORP
发明人： ISHIDA MASAMI , CHIKADA KYOJI , YOSHIDA KOTARO , ANDO TOYOO , KAWASE YOSHIYUKI , KUSANO YOSHITAKA
IPC分类号： F16L59/147 , B29C63/06
摘要： PROBLEM TO BE SOLVED: To provide a method to efficiently form a plastic coating film excellent in an appearance property and watertightness on a surface of a heat insulating layer of foaming plastic in the case of manufacturing a heat insulating pipe having the heat insulating layer of foaming plastic on an outer periphery of a pipe and a plastic protective coating film on its surface. SOLUTION: A beltlike plastic film 5 pushed out in a melting condition from a slit nozzle by a T die method, is cooled on a cooling roller 6, and after its temperature is set to a prescribed temperature higher than a softening point temperature of a plastic material, it is wound in a spiral shape while applying pressing force to an outer periphery of a heat insulating layer 2 of foaming plastic. A surface temperature of the plastic film 5 before winding is set higher by 60 to 120 deg.C than a softening point temperature of the plastic material. This temperature is also controlled by adjusting a temperature of the cooling roller 6.

9. 发明专利

JPH09327834A METHOD AND DEVICE FOR COVERING STEEL MATERIAL TO BE COVERED WITH COVERING AGENT 失效
公开(公告)号：JPH09327834A
公开(公告)日：1997-12-22
申请号：JP14894896
申请日：1996-06-11
申请人： NIPPON STEEL CORP , NITTETSU BOSHOKU KK
发明人： ISHIDA MASAMI , CHIKADA KYOJI , YOSHIDA KOTARO , KUSANO YOSHITAKA , ANDO TOYOO , ENDO MASAHIRO
IPC分类号： B29C33/10 , B29C39/10 , B29C39/42 , B29K101/10 , B29L9/00
摘要： PROBLEM TO BE SOLVED: To prevent the oxidation of a steel pipe die to the residual air at the covering part of materials to be covered from developing by a method wherein a thermosetting covering agent is charged in an enclosed gap made between the outer peripheral surface of steel pipes to be covered and the inner surfaces of split molds, which are installed on the region aiming at covering with the covering material of the steel pipes to be covered and then cured. SOLUTION: A split mold 13 having a vent hole 12 is installed so as to cover the butt-weld of steel pipes to be covered Pa and Pb and its peripheral part. Next, a thermosetting covering agent PU is prepared by mixing a urethane resin solution and a hardener with a mixing device so as to be supplied through the covering agent supplying hole of the splid mold 13 into an enclosed gap A, which is formed between the inner surface of the split mold and the outer surface of the steel pipes to be covered Pa and Pb. Next, after the covering agent PU is confirmed to be fully filled in the enclosed gap A by means of a vent hole 12, the covering agent PU is cured and hardened for a predetermined period of time, the covering agent PU covers the weld WP and its peripheral part. Then, after the elapse of the predetermined curing time, the split mold 13 is removed.

10. 发明专利

JPH1181229A STRUCTURE FOR PREVENTING CORROSION NEAR SADDLE PART OF SUSPENSION-BRIDGE CABLE AND METHOD FOR CONSTRUCTING THE SAME 失效
公开(公告)号：JPH1181229A
公开(公告)日：1999-03-26
申请号：JP26510797
申请日：1997-09-12
申请人： NIPPON STEEL CORP , HOKKAIDO KAIHATSUKYOKU MURORAN , NITTETSU BOSHOKU KK
发明人： SUZUMURA KEITA , HONMA TORU , SHIBUYA HAJIME , YAMAJI KENJI , TAKADA ATSUSHI , GOTO HIROYUKI , KAWASE YOSHIYUKI , KUSANO YOSHITAKA
IPC分类号： E01D11/00 , E01D11/02 , E01D19/16 , E01D101/40
摘要： PROBLEM TO BE SOLVED: To provide an anticorrosion structure capable of surely preventing corrosion near the saddle part of a suspension-bridge cable over a long period and a method for constructing the same. SOLUTION: A cable near the saddle part of a suspension-bridge cable is covered on its surface with an anticorrosion layer via a shutoff sheet 12. The anticorrosion layer is disposed from above the shutoff sheet 12 in such a way that it can be attached to and removed from the cable via spacers 21, 22 and the anticorrosion layer is formed by an anticorrosion resin filled into a closed gap inside a tubular cover 14, which has an injection hole and a exhaust hole, through an injection hole and hardened.

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