What are the special requirements for adjusting the height of the leaf wheel when grinding welds of different materials?

Stainless steel welds:
Stainless steel welds usually have high hardness and toughness. So, when grinding, you need to pick the right height for the leaf wheel to make sure you can get rid of the flaws on the weld surface effectively without causing too much damage to the weld.
Generally speaking, for stainless steel welds, you can make the leaf wheel height a bit higher. That way, you can use a larger contact area and cutting force to remove the oxide film and welding slag on the weld surface.

Carbon steel welds:
Carbon steel welds have a relatively low hardness but good wear resistance. When grinding, you need to avoid using a too high leaf wheel height to prevent unnecessary scratches or wear on the weld surface.
Instead, you can lower the leaf wheel height a little to control the grinding force and angle more precisely, and get a smoother weld surface.

Aluminum alloy welds:
Aluminum alloy welds have low hardness and are easy to get scratched. When grinding, you have to be really careful to control the height and force of the leaf wheel.
Usually, it's suggested to set the leaf wheel height lower and use finer abrasive materials to grind gently to avoid damaging the weld surface.

Titanium alloy welds:
Titanium alloy welds have very high hardness and wear resistance, but they're also very fragile. When grinding, you need to choose very fine abrasive materials and the right leaf wheel height.
Because titanium alloy welds are likely to change when they get heated, you also need to pay attention to controlling the temperature during the grinding process to avoid the weld's performance getting worse because of overheating.

Nickel-based alloy welds:
Nickel-based alloy welds usually have high high-temperature resistance and corrosion resistance, but the hardness is also relatively high. When grinding, you need to pick the right leaf wheel height and abrasive particle size.
Since nickel-based alloy welds might produce a lot of heat and dust during the grinding process, you also need to pay attention to ventilation and protective measures.