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Date: 06/16/02 at 1:55 AM
Posted by: Arun Rao
E-mail: kasc@satyam.net.in

During the manufacture of high chrome iron pump parts,we have been getting low hardness350-400BHN. It is desired to get a hardness of over 500BHN.
Often the as cast hardness is in the range of 450-470,but upon hardening the hardness drops.
The nominal chemistry is 23-24% Cr and 2.8-3.1%C . Also the hardening cycle is heat to 980*C soak for 4 hrs and fast air cool.
Please suggest suitable corrective measures
Thanks

Follow Ups:

  Re: Hardness problem in high chrome iron. saeed ghani moghadam   Posted at: 09/07/02 (0)

  Re: Hardness problem in high chrome iron. Aguinaldo Gonsalez   Posted at: 07/16/02 (0)

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