F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 47/02 (2006.01) B29C 47/02 (2006.01) B29C 65/36 (2006.01) B29D 23/00 (2006.01) F16L 47/03 (2006.01)
Patent
CA 2074724
An electro-fusion fitting includes a body, and a magnetic alloy member which is continuous in the axial direction is embedded in the vicinity of a joint surface of the body. A shield member is arranged on the outer surface of the body in a portion where a cold zone is to be formed. The joint surface of the body and a joint surface of a member to be joined are brought into contact with each other. When a high frequency current is applied to the magnetic alloy member from a high frequency power supply by electromagnetic induction in this state, the magnetic alloy member generates heat, so that the body and the member to be joined are fused, and joined to each other. Since the shield member shields the electromagnetic induction, the magnetic alloy member in a portion where the shield member is provided does not generate heat, so that the cold zone is formed in the portion.
L'invention se rapporte à un joint obtenu par soudage électrique, qui comporte un corps principal et, dans le prolongement de sa direction axiale, un matériau en alliage magnétique incorporé dans le corps principal à proximité de sa surface de jointure. Dans la partie destinée à former une zone froide sur la surface extérieure du corps principal, on prévoit un élément barrière. La surface de jointure du corps principal est alors mise en contact avec l'élément à joindre. Dans ces conditions, lorsqu'on applique un courant haute fréquence au matériau en alliage magnétique par induction électromagnétique, le matériau en alliage magnétique génère de la chaleur et le corps principal s'assemble par fusion avec l'élément à joindre. Etant donné que l'élément barrière protège le matériau en alliage magnétique contre les ondes électromagnétiques, ce matériau ne génère pas de chaleur et la zone froide est alors formée dans cette partie.
Kasa Hideki
Kyomen Junsuke
Okusaka Shigeru
Sakaguchi Masayuki
Tago Takashi
Bereskin & Parr
Kubota Corporation
Uponor Aldyl Company
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