Excess moisture will produce an oxidizing atmosphere in the mold, promote excess gas evolution and lower permeability, cause high dry and hot strength
, reduce mold hardness and result in poor flowability of the sand.
This phenomenon can be seen more easily when the rolling load values are converted into steel hot strength
using an inverse hot rolling model, like Sims.
It started with their ready-made jambalaya, continued with their tinned hot strength
chicken curry and now the Curse of Skinner has hit their freshly squeezed orange ice lollies.
If hot strength
is the main requirement such as in the machining of heat resisting alloys then M42 is used.
Molding first against the male tool chills the sheet enough to improve hot strength
, Arrem says.
Any variation in temperature of the hot sheet dramatically affects the hot strength
or elasticity of the plastic.
3 -5 illustrate the tensile strength development, reactivity and hot strength
of three levels of polymeric MDI (in this case, high functionality MDI).
The latter can help reduce shrinkage and improve hot strength
and heat-distortion resistance.
It exhibits good hot strength
and creep resistance and is useful up to 3,002F (1,650C).
There is not a good test out there that tells me how to measure the quality of incoming resin that will relate to the hot strength
of the material as it is processed.
This is because shell sands tend to combine the highest hot strength
and resin level with the finest grain of any chemical sand.
The CDC process provides an inexpensive approach to manufacturing engine blocks by combining the wear and hot strength
of alloy A390 on the bore surfaces with the advantages of castability and machinability of A356 in the main body of the component.