WCB NT & QT tensile fail...
WCB NT & QT tensile fail...
(OP)
Sometimes WCB Normalized (920 Deg C), Tempered (640 Deg C) & Quenched (920 Deg C), Tempered (640 Deg C) also getting ail in tensile test.
Required value: 485 - 655 MPa
Actual Value: 465 MPa
Please give your input for the same.
Required value: 485 - 655 MPa
Actual Value: 465 MPa
Please give your input for the same.





RE: WCB NT & QT tensile fail...
RE: WCB NT & QT tensile fail...
RE: WCB NT & QT tensile fail...
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( read somewhere on the internet)
RE: WCB NT & QT tensile fail...
RE: WCB NT & QT tensile fail...
RE: WCB NT & QT tensile fail...
Carbon: 0.21 %
Carbon Equivalent : 0.40
I have lowered the tempering temeperature to increase the strength but still its not working. Pouring temperatures are similar and only slight variations observed.
Tramp elements ? what kind of grain refiners has to be added ???
Sn, Sb, As are < 0.003 %
We are adding FeTi so Ti will be 0.035 %
FeSiZr, Misch Metal, CaSi & Selenium to some extent.
RE: WCB NT & QT tensile fail...
RE: WCB NT & QT tensile fail...
RE: WCB NT & QT tensile fail...
How the tensile test bar looks after the test(clean,microshrinkage porosity,...)
Are you adding so much Ti because there is a big wall thickness(>200 mm) of the casting and you are afraid of AlN cracks (rock candy)?
The hardenability of the material with so low CEV will also be minimal.
RE: WCB NT & QT tensile fail...