Steel casting

cast-ironmedium seriesfor marine applications

Cast iron parts have evolved as the preferred choice for essential structural components in heavy machinery, automotive manufacture, and industrial equipment because of their great rigidity, wear resistance, and economic benefits. Cast iron's unusual graphite form and matrix structure design help it to strike a compromise between strength and stress absorption unlike standard steel.Cast iron parts are artifacts obtained through a series of casting processes and finishing treatments. They are customized parts produced according to different customer's drawings. There are two main types of cast iron parts that Hansheng Automation can provide, namely gray cast iron parts and ductile iron parts. The casting methods it can be adapted to include Gravity Casting, etc.Good abrasion resistance: As the composition of cast iron parts contains graphite, graphite itself has a good lubrication effect, so that the cast iron parts in the friction vice shows good wear resistance.Good vibration damping: Graphite can effectively absorb the energy generated by vibration, so that cast iron parts have the performance of reducing noise and vibration transmission.Low tool wear: When cutting cast iron parts, it can play a certain lubricating effect on the tool, and the tool wear is small when processing.In order to better compare the difference between the two materials we use, ductile iron and gray cast iron, I will look at both material composition and material properties.Grey Cast IronDuctile Cast IronCarbon (%)2.5-4.03.0-4.0Silicon (%)1.0-3.01.8-2.8Manganese (%)0.2-1.00.1-1.0Phosphorus (%)0.02-0.250.01-0.03Sulfur (%)0.02-1.00.01-0.1Characterization between Gray Cast Iron and Ductile Iron:CharacterizationGray Cast IronDuctile IronStrengthLow strength, low toughness, brittleGood (better than steel, not as good as gray cast iron)LubricationGood (especially lubricated)FavorableFluidityGood (good fluidity, greater shrinkage)FavorableHardnessOutstandingly goodHighComplexityRelatively simpleThe graphite form (flake/spherical) directly influences the tensile strength (250-600MPa) and elongation (1-10%), using HT250/HT300 gray cast iron or QT450-10 ductile iron. Sand/lost foam casting guarantees dimensional tolerances (CT8-CT10), surface roughness Ra ≤ 12.5 μm, and can process complicated internal hollow shapes. With a steady hardness of 180–250HBW, heat treatment is either normalizing or annealing to release internal stress.Cast iron parts can be used in:Diesel engine cylinder body (superior heat and fatigue resistance)Machine tool bed body (damping coefficient three times higher than steel)Hydraulic valve block (pressure tolerance 35MPa+)Brake disc (stable friction coefficient)Alloy components like Cr and Ni can be included to improve corrosion resistance and fit maritime or chemical surroundings.Why choose us? Hansheng Automation is able to offer a wide range of metal casting services and can tailor the casting machining process to your specific project requirements, ensuring that your parts are suitable for their operating environment. Our custom casting capabilities meet the needs of manufacturers looking for unique and functional designs.One-stop solutionProfessional teamHigh quality