A kind of friction stir welding stirring head material and preparation method of stirring head

A friction stir welding and stirring head technology, which is applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve the problems of low mechanical properties, short service life and high production cost of the stirring head, so as to shorten the sintering time and improve the service life , The effect of reducing the cost of raw materials
CN108677075BActive Publication Date: 2019-07-23SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2019-07-23

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Abstract

The invention discloses a friction stir welding stirring head material and a preparation method of the stirring head, belonging to the technical field of welding stirring head preparation. The material of the friction stir welding stirring head includes: 75-85% of tungsten powder and 15-25% of carbon alloy powder in terms of weight percentage, and the carbon alloy powder is one or a combination of titanium carbide powder and zirconium carbide powder . The preparation method of the stirring head includes: (1) mixing the tungsten powder and the carbon alloy powder according to the above-mentioned ratio and placing them in the stirring head mold for preforming to obtain a preformed green body; (2) making the preformed The green body is placed in the furnace, and the temperature is raised to 2000-2200°C with the furnace, the pressure in the furnace is adjusted to 20-25MPa, and the temperature is kept for 1-1.5h, and it is produced after natural cooling with the furnace. The stirring head prepared by the invention has excellent strength and wear resistance, can significantly improve the service life of the stirring head, the alloy powder used is easy to obtain, and the cost of raw materials is greatly reduced.
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Description

technical field

[0001] The invention relates to the technical field of welding stirring head preparation, in particular to a friction stir welding stirring head material and a preparation method of the stirring head, which are mainly used in friction stir welding processes of alloys such as aluminum alloys, magnesium alloys, copper alloys, and titanium alloys. Background technique

[0002] Friction stir welding technology, with its unique working principle and technical characteristics, has become a new star and research hotspot in the field of welding. Friction stir welding does not require welding wire, electrode and shielding gas, and is a green and environmentally friendly welding technology. Stirring head is its most important consumable, but it is also the most fatal weakness of friction stir welding; the quality of stirring head not only determines the performance of friction stir welding joint, but also determines the production cost of friction stir welding. During...

Claims

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