Mo – the addition of alloying element Mo in CA6NM martensitic stainless steel is beneficial to the strength. And also to toughness and corrosion resistance. Mo is a ferrite forming element. It can reduce the Ms temperature.
Ni – the alloying element has no strengthening effect on the matrix of stainless steel CA6NM. According to the known Cr will promote the formation of ferrite.
Cr – one of the major alloying elements in martensitic stainless steel CA6NM. Cr in CA6NM plays a decisive role in corrosion resistance.
CA6NM ASTM A743 is a kind of low carbon martensitic stainless steel. It has good mechanical properties, CA6NM equivalent grades are as following
Since martensite will be produced after air cooling, CA6NM is not suitable for cutting, so it must be softened by heat treatment before machining. CA6NM heat treatment can be divided into high-temperature tempering and complete annealing
Ways of preventive measures against crack, shrinkage hole, and loosening of stainless steel sleeve.
This paper introduces the centrifugal casting steel sleeve process and the selection of centrifugal casting speed
The inclusion and pore defects of centrifugal casting are much less than those of gravity casting. However, due to centrifugal force, cracks, shrinkage, pore and component segregation defects of centrifugal casting are outstanding.
Recognition on Technical Parameter Selection of Steel Sleeve Centrifugal Casting Speed
By comparative test on the surface temperature distribution of W-type radiant tube with different burner structure，the main factors having effect on tube temperature uniformity for coaxially parallel jet burner are analyzed.