Cold Plate Factory FSW Process Workshop

Many kinds of making process, different production technology and materials, it can provide customers with the best cost-effective products, Of course, stable and mature process is the guarantee of product quality


The friction stir welding process workshop for making liquid cold plates

The friction stir welding method is the same as conventional friction welding. Friction stir welding also uses friction heat and plastic deformation heat as welding heat sources. The difference is that the welding process of friction stir welding is that a welding pin of a cylinder or other shape (such as a threaded cylinder) is inserted into the joint of the workpiece, and the high-speed rotation of the welding head is used to make it and welding.

The workpiece material rubs, so that the temperature of the material at the connection part increases and softens. At the same time, the material is subjected to friction stir to complete the welding. The welding process is shown in the figure.

During the welding process, the workpiece should be rigidly fixed on the back pad, the welding head rotates at a high speed, and the edge moves relative to the workpiece along the seam of the workpiece. The protruding section of the welding head protrudes into the material for friction and stirring, and the shoulder of the welding head rubs against the surface of the workpiece to generate heat, and is used to prevent the overflow of the plastic material, and at the same time, it can remove the oxide film on the surface.

During the welding process, the stirring needle extends into the seam of the workpiece while rotating, and the frictional heat between the rotating stirring head (mainly the shaft shoulder) and the workpiece causes strong plastic deformation of the material in front of the welding head, and then with the With the movement of the welding head, the highly plastically deformed material is gradually deposited behind the mixing head to form a friction stir welding seam.

The requirements of friction stir welding on equipment are not high. The most basic requirements are the rotational movement of the welding head and the relative movement of the workpiece. Even a milling machine can easily meet the requirements of small flat plate butt welding. But the rigidity of welding equipment and fixtures is extremely important.

The stirring head is generally made of tool steel, and the length of the welding head is generally slightly shorter than the required welding depth. It should be noted that the end of the friction stir weld leaves a keyhole in the terminal. Usually this keyhole can be cut off, or it can be sealed by other welding methods. In response to the keyhole problem, a telescopic stirring head has been successfully developed, and the welding keyhole will not be left after welding.

What is the maximum size to be processed?

Our processing size is 40- 3000mm long,40- 1200mm wide, and the product welding thickness is 1-15mm, which can be customized according to the different needs of customers and products. In general, this process is generally used for high-power water-cooled plate production. The material of the water-cooling plate can be aluminum 6063/6061/1060 or copper1100. The stable and reliable process ensures that the water-cooling plate will not have the risk of leakage. Usually, the pressure we generally test is 0.2Mpa-1.5Mpa. At the same time, it can also pass the strict helium detection test.