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1. 发明专利

JPS62158570A REINFORCEMENT WELDING METHOD FOR EXISTING PIPE 失效
公开(公告)号：JPS62158570A
公开(公告)日：1987-07-14
申请号：JP29740085
申请日：1985-12-28
申请人： SUMITOMO METAL IND , SUMIKIN KOKAN KOJI KK
发明人： MIYAZAKI JUNICHI , KASATANI TATSUYA
IPC分类号： B23K31/00 , B23K9/02 , B23K9/028
摘要： PURPOSE:To execute repair welding with a high efficiency by inclining and holding a welding torch against a pipe axis, executing the weaving to the pipe axis in a set state at every turning, and also bringing it to an automatic return or stop, when a welding condition is out of a set range. CONSTITUTION:A profile sensor 20 is positioned at the top part of a steel pipe W and a torch 16 is run plural times along a fillet weld zone A, lamination welding is executed, and a repair band B is joined to the steel pipe W. In the inside of a user program, a weaving data of about 45 deg. of every time is contained, and by the data of the upper and lower, and the right and left positions of the welding torch 16 which has been inclined about 45 deg., weaving is realized extending over each turning. The welding condition is integrated into the user program, and the pipe top part is set as an initial position at every movement of 10mm. In this way, the welding condition is always monitored, a stop and an automatic return of an automatic welding equipment can be executed, also a bead having no defect can be obtained, and repair welding can be executed with a high work efficiency.

2. 发明专利

JPH02241677A METHOD FOR JOINING BAR MATERIALS 失效
公开(公告)号：JPH02241677A
公开(公告)日：1990-09-26
申请号：JP6019289
申请日：1989-03-13
申请人： SUMITOMO METAL IND
发明人： KISHI SHINSUKE , MIYAZAKI JUNICHI , KASHIMOTO FUMIO
IPC分类号： B23K20/00
摘要： PURPOSE:To easily and surely join bar materials by inserting insert material between the joining surfaces thereof, loading initial load in the axial direction of the bar materials with respect to the joining surfaces to give strain to the insert material and pressing these materials under heating at the time of joining the bar materials. CONSTITUTION:Reinforcing bars which are materials 4 to be joined are set on clamp mechanisms 3 and amorphous metallic material is inserted between the joining surfaces as the insert material 5 and the reinforcing bars are fixed by tightening a fixing bolt 8. A head 2 is moved by a hydraulic jack 6 so that the prescribed load is applied in the axial direction of the reinforcing bars and the initial load is loaded. The size of load is measured and controlled by a load cell 11. The vicinity of a joining part is heated to the prescribed temperature by intense reducing flame gas by using a ring burner 72 and the materials to be joined are pressed plural times. After heating is finished, the burner is kept away. When a high-frequency heating coil is used as a heating method, nonoxidizing gas is blown in a seal box to carry out heating. By this method, joining conditions are controlled and the bar materials are joined easily and surely.

3. 发明专利

JPH0275478A METHOD FOR JOINING BAR MATERIALS 失效
公开(公告)号：JPH0275478A
公开(公告)日：1990-03-15
申请号：JP22799088
申请日：1988-09-12
申请人： KAJIMA CORP , SUMITOMO METAL IND
发明人： OSHIMA MASAAKI , MIMURA CHOJIRO , KISHI SHINSUKE , MIYAZAKI JUNICHI , KASHIMOTO FUMIO
IPC分类号： B23K20/00
摘要： PURPOSE:To easily and surely join the title materials by holding insert material between the joining faces and applying initial load on these faces and subjecting the vicinities of the joining faces to heating and diffusion joining. CONSTITUTION:The materials 4 to be joined are abutted on each other in a state with the insert material 5 held between the joining faces by clamp mechanisms 3 fixed on a connecting body 1 and a head 2. The head 2 is moved along the connecting body 1 by a jack 6 to apply load on the joining faces. Heating equipment 7 is placed on a joining part and the vicinity of the joining part is heated and subjected to diffusion joining. As a heating method, a high-frequency heating coil 71 is placed on the joining part and the vicinity of the joining part including the coil is surrounded by a seal box 10 and resistance joining is carried out in a nonoxidizing atmosphere by inert gas shielding such as Ar and N. In addition, a ring burner 72 is placed on the joining part and resistance joining in a reducing atmosphere is carried out by intense reducing flames by a heating method using gas heating. By this method, the initial load stress, heating time, etc., are set and easy and sure joining is carried out and the quality can be stabilized.

4. 发明专利

JPH03268883A BUTT JOINING METHOD AND JOINING EQUIPMENT FOR TUBES 失效
公开(公告)号：JPH03268883A
公开(公告)日：1991-11-29
申请号：JP6618890
申请日：1990-03-16
申请人： SUMITOMO METAL IND
发明人： IIDA HISAO , KATO SATOSHI , KISHI SHINSUKE , MIYAZAKI JUNICHI , KASHIMOTO FUMIO
IPC分类号： B23K20/00 , B23K20/14
摘要： PURPOSE:To reduce a term of work and the cost of work in field joining and to maintain the quality by heating the joining faces in order partially along the circumference in abutting and holding the joining faces with insert material between and heating the joining faces to diffusion-join the tubes. CONSTITUTION:Movable heating equipment 4 capable of heating a part of the joining faces 3 of a tube 1 to be joined and a tube 2 to be joined in order along the circumferential direction thereof is used. Accordingly, the joined part quality is maintained more stably by rapid cooling in accordance with heating the joining faces 3 in order. In addition, since the overall peripheries of the joining faces 3 are not heated at the same time, heat capacity of the heating equipment can be suppressed and power equipment of small capacity is set up at a field and an increase of the working cost is prevented at the time of preforming joining and the size and weight of the heating equipment can be reduced.

5. 发明专利

JPH03230874A METHOD FOR JOINING REINFORCING BARS 失效
公开(公告)号：JPH03230874A
公开(公告)日：1991-10-14
申请号：JP2363990
申请日：1990-02-03
申请人： KAJIMA CORP , SUMITOMO METAL IND
发明人： YASUNAGA MASAMICHI , AKIYAMA TERU , OSHIMA MASAAKI , KISHI SHINSUKE , MIYAZAKI JUNICHI , KASHIMOTO FUMIO
IPC分类号： E04G21/12 , B23K13/01
摘要： PURPOSE:To obtain joining of high quality without weakness by ribs by operation at high speed by inserting a steel disk provided with amorphous material thin layers between the end faces in opposition to joint the reinforcing bars. CONSTITUTION:The amorphous material thin layers 12 are formed on both sides of the steel disk 10 with various thicknesses having the outside diameter almost equal to the maximum diameter of the reinforcing bars 1 and 1 and the steel disk 10 with thickness in accordance with an interval between the end faces 1a and 1a in opposition is inserted between the end faces 1a and 1a in opposition of the corresponding reinforcing bars 1 and 1 to be connected in both major assembly reinforcing bars and then, both end faces 1a and 1a are abutted on each other via the disk 10 and both end faces 1a and 1a are joined by high-frequency induction heating. By this method, since the ribs 7 in the longitudinal direction on both sides of a joined part are perfectly coupled with the disk 10, respectively, the rib part does not cause weakness of joining.

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