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| Quantity: | |
|---|---|
| Parameter | Details |
|---|---|
| Chromium (Cr) | 18%-28%. Improves wear and oxidation resistance, forming hard chromium carbide. |
| Carbon (C) | 1.6%-2.2%. Affects hardness and toughness, ensuring good wear resistance. |
| Silicon (Si) | 1.0%-1.4%. Enhances oxidation resistance and casting performance. |
| Manganese (Mn) | 0.7%-1.0%. Increases toughness and improves mechanical properties. |
| Sulfur (S) | <0.03%. Low sulfur content reduces brittleness. |
| Phosphorus (P) | <0.03%. Low phosphorus content reduces brittleness. |
| Size Range | Customizable for various applications. Standard lengths range from cm to meters. |
| Tolerance | CT9-12. Ensures interchangeability and precise assembly. |
| Surface Treatment | Sand blasting to remove impurities, improving surface roughness and enhancing wear and corrosion resistance. |
| Surface Roughness | Ra6.4~12.5. Ensures surface quality and reduces wear and corrosion. |
| Casting Method | Thermal gravity casting or shell mold casting for increased precision and quality. |
| Mold Materials | Metal or coated sand molds ensure durability and accuracy. |
| Mold Usage | Single-use molds for consistent product quality in each casting. |
| Wear Resistance | Excellent resistance to wear, handling high-temperature sintering and mineral impact. |
| Oxidation Resistance | Forms a dense chromium oxide layer at high temperatures, extending service life. |
| High-Temperature Strength | Maintains mechanical strength at elevated temperatures, withstanding the weight and thermal loads of minerals. |
| Applications | Sintering machines, industrial boilers, waste incineration, metal heat treatment. |
Chromium (Cr): 18%-28%. Chromium improves wear resistance and oxidation resistance, forming hard chromium carbide.
Carbon (C): 1.6%-2.2%. Carbon affects hardness and toughness, ensuring good wear resistance.
Silicon (Si): 1.0%-1.4%. Silicon enhances oxidation resistance and casting performance.
Manganese (Mn): 0.7%-1.0%. Manganese increases toughness and improves mechanical properties.
Sulfur (S): <0.03%. Sulfur is an impurity. Low content reduces brittleness.
Phosphorus (P): <0.03%. Phosphorus is an impurity. Low content reduces brittleness.
Size Range: Grate Bars can be customized for different applications. Standard lengths range from centimeters to meters, with various widths and thicknesses.
Tolerance: CT9-12, ensuring interchangeability and precise assembly.
Surface Treatment: Common methods include sand blasting, which removes impurities and improves surface roughness, enhancing wear and corrosion resistance.
Surface Roughness: Ra6.4~12.5. This range ensures surface quality, reducing wear and corrosion.
Casting Method: Special methods such as thermal gravity casting or shell mold casting increase precision and product quality.
Mold Materials: Metal or coated sand molds ensure durability and accuracy.
Mold Usage: Single-use molds guarantee consistent product quality in each casting.
Wear Resistance: High chromium cast iron has excellent wear resistance, capable of withstanding high-temperature sintering and mineral impact.
Oxidation Resistance: Forms a dense chromium oxide layer at high temperatures to prevent further oxidation, extending service life.
High-Temperature Strength: Maintains high mechanical strength at elevated temperatures, withstanding the weight and thermal loads of minerals.
Sintering Machines: Used for grate bars in sintering machines, bearing high temperatures and mineral friction.
Industrial Boilers: Designed for high-temperature environments, ensuring efficient fuel combustion in the furnace.
Waste Incineration: The chromium oxide protective layer resists corrosion from waste, while the hard material withstands repeated friction from residues.
Metal Heat Treatment: Maintains stable structure and performance under high temperature and frequent thermal cycling, ensuring uniform heat transfer in metal parts.
The High Chromium Steel Iron Casting Grate Bar has the following notable features:
High Hardness: Chromium content forms hard chromium carbides, enhancing material hardness to HRC50+, effectively resisting mineral impact and wear.
Stable Performance: It maintains good wear resistance in high-temperature, high-wear conditions, reducing the need for frequent replacements and lowering maintenance costs.
Dense Oxide Layer: At high temperatures, a dense chromium oxide layer forms on the surface, preventing further oxidation and extending product life.
High-Temperature Corrosion Resistance: The material has excellent chemical stability at high temperatures, making it ideal for sintering machines and industrial boilers.
Maintains Strength: The material retains high mechanical strength in high-temperature environments, preventing softening or deformation under heavy loads.
Thermal Shock Resistance: It withstands rapid temperature changes without cracking, making it suitable for processes with frequent temperature fluctuations, like sintering.
Chemical Resistance: The material resists acids, bases, and salts, making it suitable for corrosive environments such as waste incineration.
Surface Protection: The chromium oxide layer enhances its resistance to corrosion, protecting the internal metal and reducing wear even in harsh conditions.
Mature Casting Technology: Specialized casting methods like thermal gravity or shell mold casting ensure precise dimensions and consistent quality.
Durable Molds: Metal or coated sand molds have high durability and long life, ensuring consistent product quality in each cast.
Strict Tolerance Control: Tolerances of CT9-12 ensure the product fits perfectly with equipment, improving installation accuracy and operational efficiency.
Custom Production: Custom sizes are available to meet specific requirements, offering flexibility for different applications.
Sandblasting Treatment: Sandblasting ensures high surface cleanliness and a suitable roughness (Ra6.4~12.5), enhancing wear and corrosion resistance.
Defect-Free: The casting process ensures that products are free from defects like air holes, sand spots, and cracks, guaranteeing performance reliability.
Multiple Industries: Widely used in sintering machines, industrial boilers, waste incineration, and metal heat treatment, it adapts to harsh, high-wear, and high-corrosion environments.
Good Compatibility: The product is a versatile alternative to traditional low-chromium cast iron and ductile iron, offering competitive advantages in various applications.
The production process of High Chromium Steel Iron Casting Grate Bar involves the following key steps:
Material Selection: High-purity alloys like cast iron, chromium, vanadium, and silicon are measured and cleaned.
Cleaning and Crushing: Raw materials are cleaned and crushed to ensure consistency and quality.
Melting Equipment: The raw materials are melted in an electric furnace at controlled temperatures.
Microalloying: The material undergoes microalloying to improve its properties.
Composition Adjustment: Once the composition is correct, the temperature is raised to 1580–1640°C for further alloying.
Casting Process: The molten metal is poured into molds to form the desired shape.
Lost Wax Casting: A lost-wax casting method is used for higher precision and efficiency.
Pouring Temperature: The molten metal is poured at 1420–1480°C, filtered with refractory fiber mesh.
High-Temperature Quenching: The cast bars undergo high-temperature quenching to achieve high hardness and wear resistance.
Tempering: After quenching, tempering is done at 300–420°C for 3–6 hours to stabilize the material.
Cooling and Cleaning: After casting, the bars are cooled to room temperature and cleaned using high-pressure water jets and mechanical methods.
Surface Treatment: Sandblasting is used to improve wear and corrosion resistance, achieving a surface roughness of Ra6.4~12.5.
Chemical Composition Analysis: Samples are tested to ensure they meet the required composition.
Hardness Testing: Hardness is tested on a 20mm section, typically reaching 439HBS.
Impact Toughness Testing: A 10mm×10mm×55mm sample is tested for impact toughness, usually 12.5J/cm².
These processes ensure the High Chromium Steel Iron Casting Grate Bar performs well under high temperatures, wear, and corrosion, offering a long service life.
The project quality control for High Chromium Steel Iron Casting Grate Bar involves the following key steps:
Timeline Management: A detailed project schedule is created to ensure timely completion and delivery.
Coordination: Ongoing communication between all departments to ensure technical requirements are met.
Clarifications: All technical issues are addressed before production begins to avoid delays.
Planning: A detailed ITP is prepared to define the inspection criteria and procedures for quality checks.
Non-Destructive Testing: NDT is performed based on a set chart to ensure no defects or internal issues.
Welding Preparation: Inspection of the groove ensures proper preparation for welding.
Measurement: Dimensions are checked to ensure accuracy and compliance with specifications.
Quality Check: The raw materials are inspected to ensure they meet the required standards before use.
Welding Procedures: Welding procedure specifications and qualification records are prepared before welding begins.
Process Monitoring: The fabrication process is continuously monitored for adherence to technical standards.
Weld Integrity: The shell welds are inspected to ensure they are free from defects and meet quality standards.
Groove Preparation: The groove is properly cut, preheated, and ultrasonic tested for quality assurance.
Machining Verification: Parts are inspected both before and after machining to ensure dimensional accuracy.
Hardness Testing: Hardness is checked and certified by TVU to verify the material meets the required standards.
Weld Inspection: Inspection is carried out to check the quality of trunnion welds for strength and durability.
Lifting Lug Check: The lifting lug dimensions are carefully inspected to ensure correct fit and function.
Visual Inspection: The welds are visually inspected to ensure proper appearance and consistency.
Independent Verification: A third-party examination is performed to verify that all quality standards are met.
Final Checks: A comprehensive final inspection is carried out to ensure the product is free of defects.
Documentation: Detailed records of the final inspection are maintained for quality assurance purposes.
Record Keeping: All inspection results are documented for traceability and future reference.
Surface Protection: The product is painted and packed to ensure protection during transit.
Shipping: The product is carefully prepared for transportation to the customer, ensuring safe delivery.
Final Report: A project summary is prepared, detailing all steps taken and the final outcome.
| Parameter | Details |
|---|---|
| Chromium (Cr) | 18%-28%. Improves wear and oxidation resistance, forming hard chromium carbide. |
| Carbon (C) | 1.6%-2.2%. Affects hardness and toughness, ensuring good wear resistance. |
| Silicon (Si) | 1.0%-1.4%. Enhances oxidation resistance and casting performance. |
| Manganese (Mn) | 0.7%-1.0%. Increases toughness and improves mechanical properties. |
| Sulfur (S) | <0.03%. Low sulfur content reduces brittleness. |
| Phosphorus (P) | <0.03%. Low phosphorus content reduces brittleness. |
| Size Range | Customizable for various applications. Standard lengths range from cm to meters. |
| Tolerance | CT9-12. Ensures interchangeability and precise assembly. |
| Surface Treatment | Sand blasting to remove impurities, improving surface roughness and enhancing wear and corrosion resistance. |
| Surface Roughness | Ra6.4~12.5. Ensures surface quality and reduces wear and corrosion. |
| Casting Method | Thermal gravity casting or shell mold casting for increased precision and quality. |
| Mold Materials | Metal or coated sand molds ensure durability and accuracy. |
| Mold Usage | Single-use molds for consistent product quality in each casting. |
| Wear Resistance | Excellent resistance to wear, handling high-temperature sintering and mineral impact. |
| Oxidation Resistance | Forms a dense chromium oxide layer at high temperatures, extending service life. |
| High-Temperature Strength | Maintains mechanical strength at elevated temperatures, withstanding the weight and thermal loads of minerals. |
| Applications | Sintering machines, industrial boilers, waste incineration, metal heat treatment. |
Chromium (Cr): 18%-28%. Chromium improves wear resistance and oxidation resistance, forming hard chromium carbide.
Carbon (C): 1.6%-2.2%. Carbon affects hardness and toughness, ensuring good wear resistance.
Silicon (Si): 1.0%-1.4%. Silicon enhances oxidation resistance and casting performance.
Manganese (Mn): 0.7%-1.0%. Manganese increases toughness and improves mechanical properties.
Sulfur (S): <0.03%. Sulfur is an impurity. Low content reduces brittleness.
Phosphorus (P): <0.03%. Phosphorus is an impurity. Low content reduces brittleness.
Size Range: Grate Bars can be customized for different applications. Standard lengths range from centimeters to meters, with various widths and thicknesses.
Tolerance: CT9-12, ensuring interchangeability and precise assembly.
Surface Treatment: Common methods include sand blasting, which removes impurities and improves surface roughness, enhancing wear and corrosion resistance.
Surface Roughness: Ra6.4~12.5. This range ensures surface quality, reducing wear and corrosion.
Casting Method: Special methods such as thermal gravity casting or shell mold casting increase precision and product quality.
Mold Materials: Metal or coated sand molds ensure durability and accuracy.
Mold Usage: Single-use molds guarantee consistent product quality in each casting.
Wear Resistance: High chromium cast iron has excellent wear resistance, capable of withstanding high-temperature sintering and mineral impact.
Oxidation Resistance: Forms a dense chromium oxide layer at high temperatures to prevent further oxidation, extending service life.
High-Temperature Strength: Maintains high mechanical strength at elevated temperatures, withstanding the weight and thermal loads of minerals.
Sintering Machines: Used for grate bars in sintering machines, bearing high temperatures and mineral friction.
Industrial Boilers: Designed for high-temperature environments, ensuring efficient fuel combustion in the furnace.
Waste Incineration: The chromium oxide protective layer resists corrosion from waste, while the hard material withstands repeated friction from residues.
Metal Heat Treatment: Maintains stable structure and performance under high temperature and frequent thermal cycling, ensuring uniform heat transfer in metal parts.
The High Chromium Steel Iron Casting Grate Bar has the following notable features:
High Hardness: Chromium content forms hard chromium carbides, enhancing material hardness to HRC50+, effectively resisting mineral impact and wear.
Stable Performance: It maintains good wear resistance in high-temperature, high-wear conditions, reducing the need for frequent replacements and lowering maintenance costs.
Dense Oxide Layer: At high temperatures, a dense chromium oxide layer forms on the surface, preventing further oxidation and extending product life.
High-Temperature Corrosion Resistance: The material has excellent chemical stability at high temperatures, making it ideal for sintering machines and industrial boilers.
Maintains Strength: The material retains high mechanical strength in high-temperature environments, preventing softening or deformation under heavy loads.
Thermal Shock Resistance: It withstands rapid temperature changes without cracking, making it suitable for processes with frequent temperature fluctuations, like sintering.
Chemical Resistance: The material resists acids, bases, and salts, making it suitable for corrosive environments such as waste incineration.
Surface Protection: The chromium oxide layer enhances its resistance to corrosion, protecting the internal metal and reducing wear even in harsh conditions.
Mature Casting Technology: Specialized casting methods like thermal gravity or shell mold casting ensure precise dimensions and consistent quality.
Durable Molds: Metal or coated sand molds have high durability and long life, ensuring consistent product quality in each cast.
Strict Tolerance Control: Tolerances of CT9-12 ensure the product fits perfectly with equipment, improving installation accuracy and operational efficiency.
Custom Production: Custom sizes are available to meet specific requirements, offering flexibility for different applications.
Sandblasting Treatment: Sandblasting ensures high surface cleanliness and a suitable roughness (Ra6.4~12.5), enhancing wear and corrosion resistance.
Defect-Free: The casting process ensures that products are free from defects like air holes, sand spots, and cracks, guaranteeing performance reliability.
Multiple Industries: Widely used in sintering machines, industrial boilers, waste incineration, and metal heat treatment, it adapts to harsh, high-wear, and high-corrosion environments.
Good Compatibility: The product is a versatile alternative to traditional low-chromium cast iron and ductile iron, offering competitive advantages in various applications.
The production process of High Chromium Steel Iron Casting Grate Bar involves the following key steps:
Material Selection: High-purity alloys like cast iron, chromium, vanadium, and silicon are measured and cleaned.
Cleaning and Crushing: Raw materials are cleaned and crushed to ensure consistency and quality.
Melting Equipment: The raw materials are melted in an electric furnace at controlled temperatures.
Microalloying: The material undergoes microalloying to improve its properties.
Composition Adjustment: Once the composition is correct, the temperature is raised to 1580–1640°C for further alloying.
Casting Process: The molten metal is poured into molds to form the desired shape.
Lost Wax Casting: A lost-wax casting method is used for higher precision and efficiency.
Pouring Temperature: The molten metal is poured at 1420–1480°C, filtered with refractory fiber mesh.
High-Temperature Quenching: The cast bars undergo high-temperature quenching to achieve high hardness and wear resistance.
Tempering: After quenching, tempering is done at 300–420°C for 3–6 hours to stabilize the material.
Cooling and Cleaning: After casting, the bars are cooled to room temperature and cleaned using high-pressure water jets and mechanical methods.
Surface Treatment: Sandblasting is used to improve wear and corrosion resistance, achieving a surface roughness of Ra6.4~12.5.
Chemical Composition Analysis: Samples are tested to ensure they meet the required composition.
Hardness Testing: Hardness is tested on a 20mm section, typically reaching 439HBS.
Impact Toughness Testing: A 10mm×10mm×55mm sample is tested for impact toughness, usually 12.5J/cm².
These processes ensure the High Chromium Steel Iron Casting Grate Bar performs well under high temperatures, wear, and corrosion, offering a long service life.
The project quality control for High Chromium Steel Iron Casting Grate Bar involves the following key steps:
Timeline Management: A detailed project schedule is created to ensure timely completion and delivery.
Coordination: Ongoing communication between all departments to ensure technical requirements are met.
Clarifications: All technical issues are addressed before production begins to avoid delays.
Planning: A detailed ITP is prepared to define the inspection criteria and procedures for quality checks.
Non-Destructive Testing: NDT is performed based on a set chart to ensure no defects or internal issues.
Welding Preparation: Inspection of the groove ensures proper preparation for welding.
Measurement: Dimensions are checked to ensure accuracy and compliance with specifications.
Quality Check: The raw materials are inspected to ensure they meet the required standards before use.
Welding Procedures: Welding procedure specifications and qualification records are prepared before welding begins.
Process Monitoring: The fabrication process is continuously monitored for adherence to technical standards.
Weld Integrity: The shell welds are inspected to ensure they are free from defects and meet quality standards.
Groove Preparation: The groove is properly cut, preheated, and ultrasonic tested for quality assurance.
Machining Verification: Parts are inspected both before and after machining to ensure dimensional accuracy.
Hardness Testing: Hardness is checked and certified by TVU to verify the material meets the required standards.
Weld Inspection: Inspection is carried out to check the quality of trunnion welds for strength and durability.
Lifting Lug Check: The lifting lug dimensions are carefully inspected to ensure correct fit and function.
Visual Inspection: The welds are visually inspected to ensure proper appearance and consistency.
Independent Verification: A third-party examination is performed to verify that all quality standards are met.
Final Checks: A comprehensive final inspection is carried out to ensure the product is free of defects.
Documentation: Detailed records of the final inspection are maintained for quality assurance purposes.
Record Keeping: All inspection results are documented for traceability and future reference.
Surface Protection: The product is painted and packed to ensure protection during transit.
Shipping: The product is carefully prepared for transportation to the customer, ensuring safe delivery.
Final Report: A project summary is prepared, detailing all steps taken and the final outcome.
