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Ductile Iron Casting Part Series 4
JHshukong
Cast from ASTM A532 Grade IIIB and EN-GJS-1200-2, these parts feature a martensitic matrix with embedded carbides, ideal for components in mining, chemical processing, and marine applications.
Dual-Resistance Design
Wear Resistance:
Hardness HRC 55-60 (surface), achieved via induction hardening (depth 3-5mm), reducing abrasion loss by 50% compared to standard ductile iron (ASTM G65 Method B, ≤20mg/1000 cycles).
Carbide volume fraction ≥20%, resisting cutting wear from high-hardness particulates (e.g., quartz, iron ore).
Corrosion Resistance:
Nickel-chromium alloy (Ni 3-5%, Cr 1-2%) pass 1500h H2S testing (NACE TM0177), suitable for sour gas (H2S ≤3.5MPa) and seawater environments.
Advanced Alloy Formulation
Microstructure Control: Heat treatment produces a duplex matrix (martensite + retained austenite), balancing surface hardness with core ductility (elongation ≥5%, impact resistance ≥25J).
Casting Process: Vacuum-assisted sand casting reduces gas porosity, achieving density ≥99% and improving corrosion resistance by minimizing microstructural defects.
Surface Engineering
Tungsten Carbide Cladding: Optional 2mm-thick WC coating (bond strength ≥50MPa) for extreme wear zones, extending service life by 3x in slurry pumps and classifier blades.
Electroless Nickel Plating: 20μm coating provides uniform corrosion protection (salt spray 3000h, ASTM B117), ideal for subsea components.
Dimensional & Structural Quality
Precision Tolerance: CT10-11 (ISO 8062), with CNC machining achieving IT11 for critical dimensions (e.g., threaded connections, sealing surfaces).
Defect Rate: ≤0.8%, verified via X-ray and metallographic analysis, surpassing industry standards for dual-resistance castings.
Mining & Mineral Processing:
Slurry pump impellers, cyclone liners, and ore classifier components, resisting wear from 60% solids-laden slurries (hardness ≥650HV).
Chemical Processing:
Agitator blades, reactor internals, and valve trim in fertilizer plants, withstanding 30% HCl and 40% NaOH (ASTM D543 immersion test).
Marine Engineering:
Propeller shaft brackets, seawater pump casings, and offshore platform fittings (Lloyd’s Register certified), combating biofouling and galvanic corrosion.
Dual-Resistance Expertise
Only supplier offering ductile iron castings with both HRC 55+ hardness and NACE MR0175 compliance, validated by field trials in Saudi Aramco projects.
Custom Alloy Development
In-house metallurgists design proprietary alloys for specific corrosion-wear combinations (e.g., high-silicon ductile iron for sulfuric acid), with MOQ 100kg for custom chemistries.
Rigorous Testing
In-house slurry erosion tester (ASTM G73) and salt fog chamber, providing detailed performance reports for each batch to ensure fit-for-purpose solutions.
Global Project Support
Dedicated team for offshore and mining projects, offering on-site material compatibility consulting and lifecycle management (e.g., 5-year wear predictions).
Cast from ASTM A532 Grade IIIB and EN-GJS-1200-2, these parts feature a martensitic matrix with embedded carbides, ideal for components in mining, chemical processing, and marine applications.
Dual-Resistance Design
Wear Resistance:
Hardness HRC 55-60 (surface), achieved via induction hardening (depth 3-5mm), reducing abrasion loss by 50% compared to standard ductile iron (ASTM G65 Method B, ≤20mg/1000 cycles).
Carbide volume fraction ≥20%, resisting cutting wear from high-hardness particulates (e.g., quartz, iron ore).
Corrosion Resistance:
Nickel-chromium alloy (Ni 3-5%, Cr 1-2%) pass 1500h H2S testing (NACE TM0177), suitable for sour gas (H2S ≤3.5MPa) and seawater environments.
Advanced Alloy Formulation
Microstructure Control: Heat treatment produces a duplex matrix (martensite + retained austenite), balancing surface hardness with core ductility (elongation ≥5%, impact resistance ≥25J).
Casting Process: Vacuum-assisted sand casting reduces gas porosity, achieving density ≥99% and improving corrosion resistance by minimizing microstructural defects.
Surface Engineering
Tungsten Carbide Cladding: Optional 2mm-thick WC coating (bond strength ≥50MPa) for extreme wear zones, extending service life by 3x in slurry pumps and classifier blades.
Electroless Nickel Plating: 20μm coating provides uniform corrosion protection (salt spray 3000h, ASTM B117), ideal for subsea components.
Dimensional & Structural Quality
Precision Tolerance: CT10-11 (ISO 8062), with CNC machining achieving IT11 for critical dimensions (e.g., threaded connections, sealing surfaces).
Defect Rate: ≤0.8%, verified via X-ray and metallographic analysis, surpassing industry standards for dual-resistance castings.
Mining & Mineral Processing:
Slurry pump impellers, cyclone liners, and ore classifier components, resisting wear from 60% solids-laden slurries (hardness ≥650HV).
Chemical Processing:
Agitator blades, reactor internals, and valve trim in fertilizer plants, withstanding 30% HCl and 40% NaOH (ASTM D543 immersion test).
Marine Engineering:
Propeller shaft brackets, seawater pump casings, and offshore platform fittings (Lloyd’s Register certified), combating biofouling and galvanic corrosion.
Dual-Resistance Expertise
Only supplier offering ductile iron castings with both HRC 55+ hardness and NACE MR0175 compliance, validated by field trials in Saudi Aramco projects.
Custom Alloy Development
In-house metallurgists design proprietary alloys for specific corrosion-wear combinations (e.g., high-silicon ductile iron for sulfuric acid), with MOQ 100kg for custom chemistries.
Rigorous Testing
In-house slurry erosion tester (ASTM G73) and salt fog chamber, providing detailed performance reports for each batch to ensure fit-for-purpose solutions.
Global Project Support
Dedicated team for offshore and mining projects, offering on-site material compatibility consulting and lifecycle management (e.g., 5-year wear predictions).
