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Document Title |
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7185619 |
A rocker arm 1 made of sheet metal is formed so that Vickers hardness H v of the surface layer portion 9 a of the valve stem receiver 9 is set at H v 650 to 800 and a quantity of the retained austenite γR is set at 25 to 35 vol %.
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6800144 |
Disclosed is a process for producing a retainer for a constant velocity joint for automobiles or the like, which has improved flexural strength properties without sacrificing the machinability, using a steel corresponding to SCr 415 (JIS...
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6746546 |
A composition for nitrocarburizing stainless steel parts and a method for producing a nitride or hard case on such parts using the composition, are provided. The composition includes alkali metal cyanate and alkali metal carbonate, where...
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6641680 |
Disclosed is a process for producing an inner race for a constant velocity joint comprising the steps of: providing a steel comprising by weight carbon 0.10 to 0.25%, silicon 0.03 to 0.15%, manganese 0.20 to 0.60%, sulfur 0.003 to 0.030%...
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5944916 |
A method of heat treating steel for use in transmission gears of a vehicle including the steps of carburizing the steel to 900-950° C. quenching the carburizing steel at 830-850° C., reheating the steel with ammonia gas to a temperatur...
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5336338 |
A bearing component is prepared from a carburazing steel and having a surface hardness of 63 to 67 in terms of Rockwell hardness C and a surface retained austenite content of at least 20% to less than 25%. The bearing component is produc...
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4853046 |
A heat treat process is disclosed for use in an ion glow discharge chamber for carburizing ferrous workpieces. The process provides rapid carburizing cycles by optimizing the power supplied to the glow discharge correlated to temperature...
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3650853 |
Heat treating apparatus which includes a heat treating furnace, a chute at the back of the furnace, and a quench bath at the bottom of the chute. The chute has at least one opening in it located at a level above the quench bath, through ...
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3615908 |
The present invention relates to the heattreatment of steel. More particularly it relates to the heattreatment of all types of iron and steel which are capable of hardening on heating to the austenitising range and then quenching, withou...
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2760924 |
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2538239 |
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2519127 |
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2007136 |
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1796248 |
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1499801 |
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1379722 |
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3795551 |
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1121572 |
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0309492 |
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0052796 |
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