Since 1974 the research work on gas soft nitriding of nodular castiron crankshafts used in agricultural diesel engine has started.
用气体软氮化强化农用柴油机球铁曲轴的研究始于1974年。
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HONIC 400 is not only recommended for cylinder honing on hard, soft and close-grained castiron but also for flat honing and lapping operations on gauge blocks and gudgeon pins.