quenching to achieve a uniform, fine grained homogenous structure is
NOT the same as quenching in thermal heat treatment to achieve a 100%
martensite structure that is required for Q&T thermal treatment.
The alternative accelerated cooling methods as described in ASME
Specifications were provided to assure that thicker plate sections or
other wrought, geometric product forms can be reasonably assured to
achieve a fine grain, consistent structure (in this case either 100%
fine pearlite or a uniform mixture of fine pearlite and bainite
(depending on the alloy composition)prior to tempering (if
specified).
Jaspal Singh, CWI-AWS, CSWIP-3.1
Quality Assurance
Process Equipment Division
ISGEC, Yamuna Nagar, Haryana -135001
Phone: 911732307251
Ext: 251 Mb: +91 9996624244
On Oct 7, 1:24 am, Jason Carter <jason.andrew.car...@gmail.com> wrote:
> Hello,
>
> I have a question about SA387 (1.25 Cr 0.5 Mo) steel. The ASME code
> in Section II notes that SA387 may be air blasted or liquid quenched.
> Where in the ASME code does it define the procedures for air blasting
> or water quenching.
>
> Thanks for your help,
>
> Jason
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