Friction Stir Welding Materials Division

Stirring head is the core of friction stir welding technology. According to the production experiment data of several university project teams and welding research institutes cooperated by our company, compared with traditional high temperature and high strength tool steel, stainless steel, nickel-based superalloy and other materials, tungsten is used The welding head processed by the stir head made of rhenium alloy has more advantages in terms of macroscopic appearance, microstructure and mechanical properties. Especially the friction stir welding of high melting point materials, due to the higher working environment temperature, the traditional High-temperature and high-strength tool steel, stainless steel, and nickel-based superalloy materials cannot provide sufficient strength and rigidity to meet welding requirements, while other materials with higher temperatures such as cermets, high melting point metals (W, Mo) and other materials can be machined The performance is relatively poor, and can not provide enough toughness to bear the vibration during friction stir welding. Due to the "rhenium effect", the stirring head made of tungsten rhenium alloy can provide sufficient strength and toughness at the same time under high temperature environment.

What services does the Friction Stir Welding Materials Division provide?

Provide friction stir welding solutions

The joints obtained by welding magnesium, aluminum, copper, titanium alloys or heavy steel with traditional fusion welding methods have defects such as pores and microcracks, and have wide heat-affected zones and large deformations, which limit the welding structure and restrict the use of weldments in related fields. Wide range of applications. Frictionstir welding (FSW), as a new type of solid phase welding technology, can effectively solve this problem. Friction stir welding does not require filler metal, the welding heat affected zone is small, the joint deformation is small, and the welding process is free of smoke and dust pollution. It is a green and environmentally friendly welding technology. The working principle of friction stir welding is: During welding, the stirring head composed of the shaft shoulder and the stirring needle rotates and inserts the workpiece until the shaft shoulder contacts the workpiece, and the friction between the shaft shoulder and the stirring needle (mainly the shaft shoulder) and the workpiece produces a lot of friction The friction heat makes the metal around the stirring head plasticize, and at the same time, under the action of the stirring head, the metal in the front of the stirring head is transferred to the rear of the stirring head, and then the friction stir weld is formed by pressing and forging of the shaft shoulder. The stirring head is the core component of friction stir welding. The geometry and material selection of the stirring head is very important to the performance of the workpiece joint. Tool and die steel mixing heads are generally used to weld light alloys such as aluminum and magnesium alloys. The tungsten rhenium alloy stirring head has excellent high temperature strength, toughness, and wear resistance, which can meet the needs of friction stir welding of steel, titanium, copper alloy and other materials.

What products does the Friction Stir Welding Materials Division provide?

W-25Re
.All copper alloys and titanium alloys
.A36, AISI1020, AISI4140 steel
.A572, HSLA80 steel
.X80, X70 steel
.Austenitic stainless steel, ferritic stainless steel
.Inconel600, Inconel800 steel

W-25Re-HfC
.All copper alloys, titanium alloys and W-25Re steels that can be welded
.Martensitic stainless steel
.Hot Work Tool Steel H-13
.High temperature alloy steel Inconel718