Re: A crankshaft.

Posted by scott#2 on January 13, 2005 at 17:24:38 from (141.156.147.166):

In Reply to: A crankshaft. posted by Opa A on January 13, 2005 at 16:05:30:

This is a type of induction hardness treating with results that are similar to flame hardening except that the tocco process uses electrical induction to achieve a specified temp. before quenching. Most commonly used in the treating of cams, cranks, etc. This is usually a "complete hardening" process and not usually used as a surface or area specific treatment. However it depends on the technician that performed the process to adhere to specific time intervals to achieve the proper hareness treatment. Tocco hardness will usually test out to 55+- on a rockwell c scale. No problem turning the shaft. Have a hardness test performed on the counter weights and areas close to or on the journal itself if your concerned. This will tell the tail on the quality of the original hardness job.

Hope this helps,

scott#2

Follow Ups:

• Re: A crankshaft. Opa A 12:28:55 01/14/05 (0)

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