CNC Lathe With Customized SS303 Steel 3D Hub Machining Non-standard Auto Parts

The processing process of the automobile wheel hub is: positioning and clamping the outer circle and end face of one end of the blank, and then proceed to sequential processing: rough and finish turning the outer circle, end face and inner hole of the other end to ensure the length and finishing allowance of the inner hole; Process the inner hole and end face for positioning and clamping, rough and finish turning the outer circle, end face, inner hole and groove at the other end; use the end face and small inner hole for positioning and clamping, drill each tire threaded mounting hole, drill the threaded bottom hole, and tap ; On the dynamic balancing machine, carry out dynamic balance measurement on the processed brake drum, measure the unbalanced amount and unbalanced position, and mark the unbalanced position.

Application of SUS303
SUS303 is used to process deep holes and complex-shaped parts that are difficult to machine with SUS304.
On the other hand, its corrosion resistance is not as good as SUS304, so it is not suitable for applications in contact with seawater or corrosive fluids.

Machinability of SUS303
In SUS303, MnS reduces the fracture energy of machined parts, thereby reducing cutting resistance and improving tool holding force.
In addition, SUS304 chips are difficult to split and are easily caught in the tool, while SUS303 is easy to split and it is easier to process deep holes.
SUS303 corresponds to austenitic stainless steel. Austenitic stainless steels are corrosion resistant and can be welded by TIG welding and plasma welding. In addition, even in a high-temperature environment, there is little decrease in strength. Also, since austenitic stainless steel is non-magnetic, it will hardly stick to magnets.
As a unique feature of SUS303, it has the same machinability as irons such as SS400 and S45C.
For example, SUS304, which is widely distributed in the market, has a band-like chip when cutting, which is easy to entangle with the blade. On the other hand, SUS303 contains a large amount of phosphorus (P) and sulfur (S), so chips discharged during cutting become finer. The finer the chips, the better they come out of the blade, the easier they are to clean, and the less risk of scoring or injuring the material being machined.
SUS303 is a material that is less likely to seize than SUS304. Aging is the phenomenon in which surfaces stick to each other when metals rub against each other and cannot be removed.