Qingyun Hongsheng Machinery Parts Co., Ltd. is one of the most reliable manufacturers and suppliers of the factory sells chromium-based heat-resistant cast iron parts. in China. We warmly welcome you to wholesale high quality the factory sells chromium-based heat-resistant cast iron parts. at low price from our factory. If you have any enquiry about quotation, please feel free to email us.
Reciprocating grate furnaces are suitable for the commonly used furnace types in slightly high-quality coal and biomass combustion devices. Reciprocating grate mainly consists of fixed grate plates, movable grate plates, transmission mechanism and reciprocating mechanism, etc. The tail end of the movable grate plate is clamped on the movable crossbeam, and the front end is directly placed on the adjacent next-level fixed grate plate, forming a stepped structure and having a certain inclination Angle to facilitate the downward movement of fuel. The movable grate is driven by an electric motor to drive the eccentric wheel and push and pull rods to reciprocate back and forth for a stroke of about 30-100 mm at a frequency of 1-5 times per minute
Products Description
The manufacturer's sale of heat-resistant cast iron parts refers to cast iron components that possess anti-oxidation and anti-growth properties in high-temperature environments, and are widely used in industrial furnaces, heat exchangers, metallurgical equipment, etc. in high-temperature conditions. The following is a summary of its key characteristics and applications:
1. Material Properties
Antioxidant property: A dense oxide film (such as Cr₂O₃, Al₂O₃, SiO₂) is formed by adding elements like silicon, chromium, and aluminum. The oxidation rate should be less than 0.5g/(m²·h) after 150 hours of heating.
Anti-growth property: The volume expansion rate at high temperatures is less than 0.2%, avoiding dimensional deformation caused by oxidation and graphitization.
Classification: Classified by alloy elements into silicon series (such as medium silicon cast iron), chromium series (such as high chromium cast iron), aluminum series, and nickel series (such as nickel-chromium-silicon cast iron).
2. Typical Applications
Industrial furnace components: Furnace bottom plates, conveyor components, sintering machine trolleys, etc..
Heat exchange equipment: High-temperature heat exchangers, gas turbine combustion chamber liners.
Extreme conditions: Ash incineration furnace grate, ethylene cracking furnace supports (requires nickel series austenitic cast iron to enhance toughness).
3. Process Improvements
Melting process: Use the iron-aluminum mixed melting method to reduce energy consumption and avoid segregation defects.
Graphite optimization: Fine-grain graphite structure is achieved by using a spheroidizing agent, enhancing thermal resistance (such as the worm-shaped graphite in Globerloy cast iron).
Heat treatment: Two-stage annealing (850°C holding + furnace cooling to 600°C) eliminates casting stress.
4. Material Selection Suggestions
Temperature matching: Silicon series is applicable below 900°C, chromium series can reach 1200°C, and nickel series is suitable for heat shock resistance scenarios.
Performance balance: Both high-temperature strength (such as RuT400 grade with tensile strength ≥ 400MPa) and antioxidant property need to be considered.
5. Production Standards
Must comply with the GB/T 9437 standard for heat-resistant cast iron parts, controlling pouring temperature (1350-1420°C) and graphite morphology formation rate (≥85%).
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why choose our products
1. 20 years of experience in casting cast iron plate, quality assurance, timely delivery
2. Perfect machining and inspection equipment can directly provide finished parts and meet the inspection requirements of customers
3. It has independent import and export rights and can export products to all parts of the world
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