Hello everyone, I am the youngest girl in the factory.
In the production of vermicular graphite iron castings,
excessive treatment, too much creeping agent or small amount of
molten iron will easily lead to the phenomenon of low creeping rate.
How to interpret whether it is a low creep rate?
There are four judgment methods,
and now I will share them with you.
1. The triangular test piece in front of the furnace
has a thin fracture and is silver-gray
2. Severe shrinkage on both sides or central shrinkage
3. Metallographic structure of castings: nodular ≥φ60%
4. Castings have shrinkage porosity and shrinkage holes
How to solve the low creep rate?
Follow me, the next small class will teach you how to solve it.
In the production of vermicular graphite iron castings,
excessive treatment, too much creeping agent or small amount of
molten iron will easily lead to the phenomenon of low creeping rate.
How to interpret whether it is a low creep rate?
There are four judgment methods,
and now I will share them with you.
1. The triangular test piece in front of the furnace
has a thin fracture and is silver-gray
2. Severe shrinkage on both sides or central shrinkage
3. Metallographic structure of castings: nodular ≥φ60%
4. Castings have shrinkage porosity and shrinkage holes
How to solve the low creep rate?
Follow me, the next small class will teach you how to solve it.
