Microstructure and Properties of Non-Quenched Prehardened Steel for Plastic Mould with 700 mm Thickness

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Non-quenched prehardened steel for plastic mould with 700 mm thickness (NQP700) has been developed in order to save energy and shorten the producing cycle. Microstructure and properties of the NQP700 steel are studied. The results show that microstructure of the NQP700 steel block is bainite distributing uniformly through the whole section, whose hardness fluctuation is not more than ±1.5HRC. Its polishing ability and pattern etching properties satisfy the needs of plastic mould, and it has better machinability

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1072-1075

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June 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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