Stir induction welding method and stirring head
A welding method and stirring head technology are applied in welding equipment, high-frequency current welding equipment, non-electric welding equipment, etc., which can solve the problems of high upsetting pressure and high top pressure.
Pending Publication Date: 2020-10-23
张洪涛
View PDF11 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The invention provides an induction stirring welding method and a stirring head. Aiming at the problem that frictional heat requires high top pressure, induction heating is used instead of friction heating workpieces, and the skin effect characteristic of induction heating is fully utilized to overcome friction stir welding. Due to the disadvantage of high forging pressure, the "stirring + friction" welding method is improved to "stirring + induction" welding method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] The following examples illustrate the technical solution of the present invention, but the following cases do not limit the protection scope of the present invention.
[0026] The induction stirring head used in the present invention is at least composed of a shaft shoulder, a stirring needle and an induction coil. The invention provides induction stirring heads with three different structural forms, namely: embedded, detachable and double-shaft shoulder induction stirring heads. in figure 1 It is a schematic diagram of the structure of the embedded induction stirring head, figure 2 It is a schematic diagram of the detachable induction stirring head, image 3 It is a schematic diagram of the structure of the double-shaft induction stirring head. The embedded and detachable induction stirring head structure at least includes a shaft shoulder 1 , a stirring needle 2 and induction coils 3 and 4 . The double shoulder stirring head is at least composed of a shoulder 5 ,...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an induction stir welding method and a stirring head. The method is characterized in that an induction stirring head for welding is internally provided with an induction coil,the induction coil is in communication with a welding power supply during welding, an included angle between an axis of the induction stirring head and a normal of the surface of a welded workpiece is kept, the stirring head is inserted into the welded workpiece in a rotational or non-rotational mode by a certain depth and then moves in a welding seam direction, part of a base material close to the induction coil is heated rapidly to a certain temperature under the action of a skin effect of induction heating, and is made to reach a plasticity or molten state, and metal connection is achieved under the mechanical stirring effect of the stirring head at the same time. The induction stirring head at least comprises a shaft shoulder, a stirring needle, an induction coil and the like, wherein the shaft shoulder and the stirring needle are made from non-magnetic conductive materials, and the induction coil is built inside the shaft shoulder and the stirring needle. According to the method, by utilizing the skin effect of induction heating, the defect that a friction stir welding upsetting pressure is large is overcome, the structure is simple, operation is convenient, the welding quality is high, and the high practical value is achieved.
Description
technical field [0001] The invention belongs to the application of electromagnetic induction technology in the field of welding, in particular to a stirring induction welding method and a stirring head. Background technique [0002] Friction stir welding is a solid-phase welding technology, which heats and plasticizes the workpiece through friction, and realizes the metal connection between the workpieces under the mechanical stirring of the stirring head. Compared with traditional welding methods, it has the characteristics of high quality, low consumption, small deformation, and no pollution. However, friction stir welding is a technology that uses frictional heat to achieve welding. The welding upsetting pressure is large, so the welding equipment is heavy and the tooling and fixture are complicated, which is not convenient for welding operation and the application of complex welds. At present, this technology is mainly used in Welding of non-ferrous metals such as alumi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K20/12B23K13/01
CPCB23K28/02B23K20/122B23K13/01
Inventor 张洪涛
Owner 张洪涛