What is a good method for welding mixers?
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The stirrer has two flat blades; should welding be done using tack welding or with the help of clamps? Which one is more effective? If there are other methods, please recommend them! Thank you!
It is possible to mill 2 positioning grooves on the mixer hub first, which helps to ensure the verticality of the blades better
As for whether to use that type of spot welding, I really can’t say. The reason for the lack of a response so far is the welding of the mixer blades; no matter how you weld them, it is essential to ensure their rotational dynamic balance. This is what matters most.
It is preferable not to weld the blades of the mixer to the shaft; instead, clamps can be used for connection
Welding causes significant welding deformation, and it is difficult to control its balance. If welding is necessary, it is better to use fixtures for welding; in addition, proper process measures to prevent welding deformation must be taken into account
The guy on the 2nd floor mentioned milling positioning grooves, which is a creative idea. But wouldn’t milling such grooves on each hub take a lot of time? Also, it’s not easy to machine grooves in hubs on a lathe! Is what the guy on the 4th floor said a bit off? Which one, the mixer or the shaft, was welded directly? This definitely requires welding the blades to the hub, and reinforcement ribs are needed for the welding as well! The guy on the 5th floor is even more puzzling to me – if the paddle blades aren’t welded, are they cast as one piece directly? Each mixer comes in different sizes and models, so how many molds are needed?
It is necessary to use jig positioning for welding, as the blades rotate, and it is very difficult to adjust their dynamic balance after deformation.
To be honest, what they say makes sense; there are actual cases in practice, so there’s no need to be surprised, haha. There are many methods: 1. Direct welding by positioning with fixtures. 2. Weld after positioning the tank. 3. The blade is welded to the hub and connected via a flat key, with a pressure plate for positioning. 4. Make it in the form of a clamp. 5. The blade and hub are connected by bolts, while the hub and shaft are welded together. Wait a moment.