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Hastelloy material manufacturing stainless steel reactor and defect repair


Release time:

2019-07-22

The mechanical properties of Hastelloy are very prominent, it has the characteristics of high strength and high toughness, so it has certain difficulty in machining, and its strain hardening tendency is very strong, when the deformation rate reaches 15%, it is about twice that of 18-8 stainless steel. The Hastelloy alloy also has a medium-temperature sensitization region, and its sensitization tendency increases with the increase of deformation rate. When the temperature is high, Hastelloy is easy to absorb harmful elements, which makes its mechanical properties and corrosion resistance decrease. For the laboratory high pressure cracks, first of all should determine whether the material itself is the problem or the machine material has corrosion to the material, the laboratory stainless steel reactor shell has local corrosion, using arc

The mechanical properties of Hastelloy are very prominent, it has the characteristics of high strength and high toughness, so it is difficult to machine, and its strain hardening tendency is very strong, when the deformation rate reaches 15%, it is about twice that of 18-8 stainless steel. The Hastelloy alloy also has a medium-temperature sensitization region, and its sensitization tendency increases with the increase of deformation rate. When the temperature is high, Hastelloy is easy to absorb harmful elements, which makes its mechanical properties and corrosion resistance decrease.

For cracks in the laboratory under high pressure, it should first be determined whether it is the problem of the material itself or whether the machine material corrodes the material.Stainless steel reaction kettleIf the shell is locally corroded, it can be repaired by arc surfacing method. IfStainless steel reaction kettleThe local corrosion area of the shell is large, so repair it by patching method. If the crack depth is lessStainless steel reaction kettle10% of the wall thickness, and not more than 1mm, can use the grinding wheel to smooth the crack, and smooth transition with the metal surface. The new products developed by Weihai Xingyu Chemical in recent years not only have beautiful appearance, tight structure, convenient operation and other characteristics, but also rarely have quality problems.