6101006106J6IA N0GTiaa n-c0Ghi-iI1 CG0 N6a1GI eGJ GC g1d0gu sga oG-c0iaaG0JIANG Tian-chi Chengdu Gas Compressor Plant Sichuan Petroleum Administration Chengdu Sichuan 610100 ChinamsprPl tS95 5 .5 5 29r84P2rp 922P 2P42232429 1965. 05 028-884534352005-12-091 1 053 2 200 mm 1989 20CrNiMo b+739 MPa s+637MPa 5+17% +50% K+80 J/ cm2 220 250 HB 880 920 22. 5 h + 560 580 2. 5 3. 5 h 1 Fig. 1 Scheme of the compressor piston rod 150 200 m +735 HV0. 2 2003 4 38CrMoAl 20CrNiMo 240 280 HB 5+15% +520 HV0. 2 80 150 m 20CrNiMo 930 950 1. 5 2. 5 h + 650 690 2. 5 3. 5 h 12 4 b= 961. 92 MPa s= 857. 59MPa 5=17. 63% =64. 58% K=145. 16 J/ cm2 265 HB38CrMoAl 38CrMoAl 500 0. 3 2. 0mm 2 40 kg 2 a b Fig. 2 The stress relieving annealing a and the nitridingprocessbof the piston rod 63. 5 40 kg 0. 4 0. 6 m3/ h 5200. 98 kPa 150 mm 80% 90% ?Fe2 3N 0. 06 mm 6 641HV0. 2 0. 1 mm 600 092006 31 6 ” ” ” 471003 Induction Hardening for the Support Arm of Spade BladeFAN RongSchool of Materials Science and Engineering Henan University of Science and TechnologyLuoyang Henan 471003 China”TG162. 29 ?B ?0254-6051 ?2006? 06-0091-01T90 T120 T140 ”“S 110 S 150 S 127mm “48 55HRC “2. 1 6. 5 mm “T90 1a 1 a b Fig. 1 The sketch of the blade support arma andits inductor for induction hardening b 1 “S 110 90 mm 16 mm ”15 60 HRC fi 1b A “ “ “ fl T90 40 ” fi fi fi”fl18s ”fi “2. 1 6. 5mm “ DGF-252 GC10180Q 2 1 “T90 T90”“55 58HRC