Isothermal spheroidizing technique for H13 steel

An isothermal spheroidal annealing technology for H13 steel includes preheating at 680 deg.C for 1 hr, heating to 840-890 deg.C, holding the temp for 2-4 hrs, cooling to 710-740 deg.C, holding the temp for 3-4 hrs, cooling to 500 deg.C, and natural cooling. The die made of is has long service life e...

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Hauptverfasser:	ANQUAN ZOU, PEIRAN DENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
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Zusammenfassung:	An isothermal spheroidal annealing technology for H13 steel includes preheating at 680 deg.C for 1 hr, heating to 840-890 deg.C, holding the temp for 2-4 hrs, cooling to 710-740 deg.C, holding the temp for 3-4 hrs, cooling to 500 deg.C, and natural cooling. The die made of is has long service life elongated by 1-2 times. 本发明涉及一种H#-[13]钢等温球化退火工艺。是在升温到840～890℃保温2～4小时之前，先随炉升温到680℃预热1小时，500℃以下出炉空冷之前先随炉冷至710～740℃后保温3～4小时。采用等温球化退火工艺处理的H#-[13]钢热作模具使用寿命提高1～2倍。