Large Crank Shaft

Application:  Marine spare parts

Forged steel shaft- hyower spindle forging
 
Material
 Alloy steel (20SiMn etc.)
 
Material Standard
 ASTM or GB/T3077-1999
 
Dimension
 Customized
 

Smelting Process:EAF+LF+VD/VOD+VC

MPP: Smelting→Inspection→Ingot→Inspection→Heating→Forging→Inspection→Rough Machining→Inspection→HeatTreatment→Inspection→Semi-Final-Machining →Final Machining →Inspection→Blasting→Inspection →Painting →Inspection→Packing
Technics:Forging Ratio>3.5, Strictly In Accordance With EN10228-3; ASME388;DIN;JIS

Equipments & Processing Capacity:
Smelting
 100T EAF;150T VD/VOD;80T ESR;100T Ladle Casting Cart;450T VC. Annual Output 1 Million Tons.
 
Forging
 120MN Forging Press;W6*L18*H5M Heating Furnaces;W5*L25*H4M Heat Treatment Furnaces;
?2.6*30M Vertical Furnaces;30MN Straightening Machine.
Max 450T Ingot Can Be Forged.Annual Forging Capacity 180 Thousand Tons.
 
Machining
 L:30*D3.6M Deep Hole Drilling&Boring Machine;260T,D8*H5M Vertical Lathe;
D4*L15M/25M,160T Horizontal Lathe;300T,L17.5*W5.8*H5M Milling&Boring Machine;
D3M,250T Grinding Machine. Turbine Shaft Processing Capacity:5000pcs/Year  

Inspection:Approved By CNAS. Advanced Inspection Equipments Including GE SM35XS UT Machine; Swiss ARL 4460 Spectrum; America AXIO Zeiss Microscope; ONH2000 Analyzer; CMT5305 Digital Testing Machine; ZBC2302C Impact Testin Machine, ICP7000 Spectrometer lcp, ONH2000 Analyzer,CMM, etc.