|A process of steel making where the impurities are oxidised by blowing high |
purity oxygen through an inclined lance (or lances) on the surface of high
phosphorous molten pig iron held in a basic lined converter which is
inclined at about 20o to the horizontal and is rotated at rates up to 35
|A wedge used for fastening the dies into the hammer tup of into the anvil |
|Patches of scale left on sheets after pickling. This results from two |
sheets having remained in close contact during pickling.
|Knoop Hardness Test|
|An indentation hardness test using calibrated machines to force a |
rhombic-based pyramidal diamond indentor having specified edge angles,
under specified conditions, into the surface of the material under test and
to measure the long diagonal after removal of the load.
|Killed Steel (Solid Steel)|
|Steel which has been fully deoxidized to reduce the oxygen content of the |
steel to a minimum in order that it lies perfectly quiet when poured into
an ingot mould and no reaction takes place between carbon and oxygen during
solidification. There is no evolution of gas in the mould and the to
surface of the ingot solidifies with relative rapidity. Killed steel
generally is used when a homogeneous structure is required in the finished
steel. In general, all steels with more than 0.30% carbon content are
|Tin plate with superior corrosion resistance to mild acid food products; |
must meet four (4) special property tests : 1. Pickle lags 10 or less. 2.
Tin crystal size ASTM 9 or larger. 3. ISV (iron solution value) 20 micro
grams Fe or less. 4. ATC (Alloy tin couple - American Can test) or AMP
(Aerated Media Polarization test) Avg. 0.050 micro amps/sq. cm. Or less –
95% 0.085 or less. No test over 0.120.