The cooling characteristics of standard and high phosphorus cast iron brakeblocks (TM-MS-38)

When attempts were first made to manufacture 3% phosphorus cast iron brakeblocks at BREL Horwich, it was found that the blocks cracked at the "knock-out" stage. Two measures to prevent cracking were considered:- a) slowing down the cooling track to allow more cooling time between casting and "knock-out". ...