Square steel C0.42~0.48 Si 0.15~0.35 Mn 0.60~0.90 P < 0.030 S < 0.035 Cu < 0.30 Ni < 0.20 Cr < 0.20 forged by S45C
Forging round steel 80-1000mm, forging billet 80-1000mm,
Ingot 1-35 tons, ESR ingot: 1-25 tons length: spot 4-6 meters. It can produce up to 18 meters per unit, or deliver the goods according to customer's requirement.
2. Product surface quality and dimension tolerance Rough car diameter tolerance: -0/+3mm; Black skin diameter tolerance: -0/+5mm
Surface delivery status: forged black leather/annealed polishing/rough turning;
Surface finish implementation GB/T1031-2009 Standard Surface Roughness Implementation GB/T1031-1995 Standard
3. Quality Assurance Forging Ratio: > 4:1; Straightness: > 3mm/1000mm Grain Size: > 6grade H:= 2.0ppm Non-metallic Inclusion: Coarse System Value < 2.0 Fine System Value < 2.0 Process: EAF Arc Furnace + LF Refining + VD Vacuum Degassing Furnace + Ingot + Precision Forging + Annealing + Black Skin Grinding + GB/T6402-91 Grade II Flaw Detection + Two-end Sawing Furnace is inspected by three times of chemical composition, and two forgings ensure the quality of products. As well as mechanical properties, each product has undergone ultrasonic testing, eliminating the problems of white spots, cracks and slag addition. It can also be produced according to the requirements of customers, which can better ensure the variability of processed products and reduce the waste of raw materials.
4. Qualification Certification Company has passed ISO 9001:2000 Quality Management System Certification. CCS of China, RINA of Italy, KR of Korea, NK of Japan Maritime Association, BV of France, ABS of USA, RS of Russia, LR of UK, GL of Germany, and certification of Chinese military equipment quality system.