Method for controlling heat treatment deformation of large-modulus gear

The invention relates to a method for controlling heat treatment deformation of a large-modulus gear. The method is characterized by comprising the following steps: Cr-Ni-Mo steel comprises 0.13-0.25 of C; 0.17 to 0.37% of Si; 0.50 to 0.95% of Mn; s is less than or equal to 0.020; p < = 0.020; 0....

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Bibliographische Detailangaben
Hauptverfasser:	AO ZHONG, SONG RENBO, PAN ZHANXIA, SHE JILOU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention relates to a method for controlling heat treatment deformation of a large-modulus gear. The method is characterized by comprising the following steps: Cr-Ni-Mo steel comprises 0.13-0.25 of C; 0.17 to 0.37% of Si; 0.50 to 0.95% of Mn; s is less than or equal to 0.020; p < = 0.020; 0.40 to 1.80% of Cr; 0.35 to 1.70% of Ni; 0.20 to 0.60% of Mo; 0.20% or less of Cu; v < = 0.15; 0.020 to 0.040% of Al; 0.015 to 0.035% of Nb; fe: the balance; 2 < = Al/N < = 4; the method comprises the following steps: step 1, two-stage temperature equalization; 2, carburizing at 950 +/-10 DEG C; 3, quickly cooling to 650 +/-5 DEG C; fourthly, oil quenching is conducted after temperature equalization is conducted at the temperature of 820-840 DEG C; step 5, cleaning; and sixthly, low-temperature tempering is conducted. The carburizing efficiency is remarkably improved, and deformation is effectively controlled. 一种控制大模数齿轮热处理变形的方法，其特征在于：针对Cr-Ni-Mo钢包括：C：0.13～0.25；Si：0.17～0.37；Mn：0.50～0.95；S≤0.020；P≤0.020；Cr：0.40～1.80；Ni：0.