Welded sprocket

It is best to first process the sprocket blank and then carry out tooth cutting, followed by local heat treatment, which should help ensure minimal end play

It is recommended that the poster make their intentions clear when posting! Taken literally, it means ensuring the runout of the wheel’s turning surface, which might be contrary to the actual intention! It is impossible to ensure that the end face of the rotating wheel does not wobble at all. There needs to be a concept of quantity here. Depending on the application, different accuracy grades are used, and the requirements regarding runout vary greatly. The key is to meet the usage requirements. There are many factors that determine the end face runout of sprockets: factors related to machining processes, factors due to heat treatment deformation, as well as installation factors, and so on. I’m not sure whether the original poster is discussing a single mechanical component – chains – in isolation, or chains that are used within mechanisms The opinions are for reference only! Please forgive any exaggerations!

The sprocket and the hub are separate components; after welding, the runout is not well controlled. What can be done to solve this issue?

I see. I think it can be solved from the following aspects: 1. The clearance between the sprocket and the hub should be as small as possible; if necessary, a static fit (thermal fitting) can be used before welding. 2. During machining of the sprocket and hub, it is important to ensure the perpendicularity and coaxiality of the relevant parts. 3. Appropriate measures must be taken during welding to avoid excessive deformation. Whether this can solve your problem is for reference only!

Does anyone here know the method for labeling welding electrodes and how to distinguish between different types of them? How to tell from the representation method whether a welding rod is acidic or alkaline. Thank you!