. Railway mechanical engineer . Broken Compressor Casting phosphides and sulphides. And as they all have differentfreezing points they form groups by segregation. Now the welder ma\ notice sometime when he has hiscast iron job in the molten condition that it has a tendencyto chill in spots and form little pools of frozen metal. Thisis the iron carbide, sometimes called combined carbon, inaction. It will be noticed more in the white irons. -Again manganese sulphide will show itself in a cast ironweld as a peculiar film or scum on the surface of the moltenmetal, and the welder will soon learn th
. Railway mechanical engineer . Broken Compressor Casting phosphides and sulphides. And as they all have differentfreezing points they form groups by segregation. Now the welder ma\ notice sometime when he has hiscast iron job in the molten condition that it has a tendencyto chill in spots and form little pools of frozen metal. Thisis the iron carbide, sometimes called combined carbon, inaction. It will be noticed more in the white irons. -Again manganese sulphide will show itself in a cast ironweld as a peculiar film or scum on the surface of the moltenmetal, and the welder will soon learn that it looks quitedifferent from the ordinary molten slag. The .segregation of the silicides shows itself in molten castiron in the iform of small lumps whicli do not want to is the silicon a small amount of iron andforming a gloljule which is pasty and .low to melt. The phosphides sometimes cause the inferior of a castingto be .pfjngy and difficult to weld. The wehler will noticethat the metal is of a weak s
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
