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1. 发明专利

JPH047124A BONDING METHOD AND APPARATUS OF HEAT-SHRINKABLE COVERING MATERIAL 失效
公开(公告)号：JPH047124A
公开(公告)日：1992-01-10
申请号：JP10975490
申请日：1990-04-25
申请人： DAI ICHI HIGH FREQUENCY CO LTD , NIPPON STEEL CORP
发明人： TSUCHIDA ISAMU , YAMATANI YATARO , MATSUOKA KIYOMI , KUROKI RYOICHI
IPC分类号： B29C35/08 , B29C63/00 , B29C63/42 , B29C65/32 , B29C65/66 , B29K105/02 , B29L23/00
摘要： PURPOSE:To satisfactorily bond heat-shrinkable covering material onto the outer surface of pipe by a method wherein the heat-shrinkable covering material is mounted onto the outer surface of the pipe and induction-heatable heat generating tube and induction heating coil are arranged around the covering material and energized and, at the same time, heat is generated in the pipe inside the covering material by induction heating. CONSTITUTION:When energizing of induction heating coil 7 is started, the temperature of heat generating tube 8 is raised by induction heating and covering material 13 is heat-shrunk by being applied with radiation heat and, at the same time, the temperature of the space in an oven is raised and, simultaneously, the heat of pipe 2 is raised by induction heating. The covering material 13 starts to shrink peripherally from its middle so as to tightly adhere to the outer surface of the pipe and the shrunk part of the material moves toward both ends. As a result, the air between the outer surface of the pipe and the covering material 13 is expelled from the middle of the material to both ends, resulting in leaving no bubbles between the outer surface of the pipe and the covering material 13. When the covering material 13 is shrunk and brought into close contact with the outer surface of the pipe, the bonding layer of the covering material 13 is melted by the heat, which is conducted from the outer surface of the covering material 13 and from the outer surface of the pipe, resulting in realizing better adhesion between the covering material 13 and the outer surface of the heating pipe. Further, the contact area between the covering material 13 and film 12 is heated and melt-bonded through the heating from the outer surface of the covering material 13 and the conduction of heat from the pipe 2 to the film 12.

2. 发明专利

JP2002301567A METHOD FOR PRODUCING COMPLEXED CYLINDRICAL OR COLUMNAR BODY 失效
公开(公告)号：JP2002301567A
公开(公告)日：2002-10-15
申请号：JP2001104400
申请日：2001-04-03
申请人： DAI ICHI HIGH FREQUENCY CO LTD
发明人： MATSUBARA YOICHI , TAKEYA AKIHIRO , KOBAYASHI RYOJI , MATSUOKA TOSHIHARU , MATSUOKA KIYOMI
IPC分类号： F16C13/00 , B21C37/06 , B23K1/00 , B23K1/14 , B23K1/20 , B23K101/06 , C25D7/06
摘要： PROBLEM TO BE SOLVED: To provide a method for easily producing a complexed cylindrical or columnar body which is excellent in mechanical joined strength and electrical conductivity of a core material and a sleeve material, and has a constitution where the metal-made sleeve material is complexed to the cylindrical or colum nar metal-made core material concentrically. SOLUTION: The core material 1 and the sleeve material 2 are prepared with a dimensional relation so as to interpose a brazing material therebetween, and the brazing material 3 is plated to one or both of the circumferential surface of the core material and the inner peripheral surface of the sleeve material, and the sleeve material 2 is shrinkage-fitted to the core material 1. Thereafter, an operation of heating, melting and successively, solidifying the brazing material 3 between the core material 1 and the sleeve material 2 is performed in the form of progressing from the lower part to the upper part in order, and the core material and the sleeve material are brazed while automatically shifting upward gas bubble and impurity in the brazing material to produce the complexed cylindrical or columnar body excellent in the mechanical joined strength and the electric conductivity.

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