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Core Advantages of Boiler Grate Products
As a core load-bearing component of the boiler combustion system, the performance of the boiler grate directly determines the boiler's combustion efficiency, operational stability, and service life. Our company's boiler grates, from material selection and process design to performance adaptation, comprehensively create a differentiated competitive advantage, as detailed below:
I. High Wear-Resistant Material, Extending Service Life The grate operates under harsh conditions of high temperature, high wear, and strong corrosion for extended periods. The material is the core guarantee of its durability. Our grates use customized alloy cast steel (such as ZG35Cr24Ni7SiN, ZG20Cr13, etc.), and through precise control of the proportions of alloying elements such as carbon, chromium, and nickel, the material possesses characteristics of high-temperature oxidation resistance, mechanical wear resistance, and sulfur/chlorine corrosion resistance. Third-party testing shows that the surface hardness of the grate plates can reach over HB400, improving wear resistance by 60% compared to ordinary cast iron grates. In high-frequency wear scenarios such as biomass boilers and coal-fired boilers, the service life can be extended to 5-8 years, significantly reducing equipment replacement and downtime maintenance costs for enterprises.
II. Precision Structural Design, Adaptable to Multiple Fuels
For different boiler fuel types (coal, biomass pellets, waste-derived fuels, etc.), our company's grates adopt a modular and differentiated structural design:
Coal-Specific Grate: Utilizing an "anti-jamming staggered tooth" design, the grate bar spacing is precisely controlled at 3-5mm, preventing coal leakage and loss while ensuring timely slag removal. Combined with arc-shaped ventilation slots, it achieves uniform air distribution across the coal bed, improving combustion efficiency by over 12%.
Biomass-Specific Grate: Optimized grate bar spacing to 8-10mm, with added "anti-bridging protrusions" effectively solving the problems of coking and bridging of biomass fuel. It also enhances the grate surface's thermal conductivity, preventing localized overheating and deformation.
General-Purpose Grate: Supports multi-fuel co-firing. The modular splicing structure allows for flexible combination according to boiler tonnage (0.5-100t/h), adaptable to various equipment such as industrial steam boilers and hot water boilers.
III. Advanced Molding Process Ensures Operational Stability
Our company's grate production utilizes a complete process of precision casting + CNC machining + overall heat treatment:
In the casting stage, lost foam precision casting technology is used, controlling the dimensional tolerance of the grate pieces to ±0.5mm, avoiding uneven assembly gaps and operational jamming caused by dimensional deviations;
In the machining stage, key stress-bearing parts are precision ground using a five-axis CNC machine tool to ensure grate surface flatness, reducing mechanical vibration and noise during operation;
In the heat treatment stage, a "high-temperature quenching + low-temperature tempering" process is used to eliminate casting stress, resulting in a uniform internal metallographic structure, increasing deformation resistance by 50%, and enabling long-term resistance to high-temperature conditions of 800-1000?, eliminating high-temperature creep, fracture, and other failures.
IV. Low-Resistance, High-Efficiency Ventilation Improves Combustion Economy
The grate's ventilation system directly affects fuel combustion completeness and energy consumption. Our company's grate features built-in stepped airflow guide holes, reducing ventilation resistance by 15% compared to traditional grates. This results in more even air distribution and more complete fuel combustion, reducing unburned carbon emissions and lowering the operating power of auxiliary equipment such as induced draft fans. Simultaneously, a leak-proof sealing baffle is added to the bottom of the grate, controlling the air leakage rate to within 3%, preventing cold air from entering and affecting the furnace temperature. Overall, this can improve boiler thermal efficiency by 5%-8%, helping businesses reduce fuel and electricity costs.
V. Easy-to-Maintain Design, Reducing Operation and Maintenance Costs
Considering the ease of operation and maintenance of industrial boilers, our company's grate adopts a split, detachable structure: The grate plates are connected to the crossbeam via special retaining springs, allowing individual grate plates to be independently disassembled and replaced without requiring a complete shutdown, reducing maintenance time to 1/3 of traditional grates;
The grate side seals are made of wear-resistant, flexible materials, eliminating the need for frequent adjustments and extending the seal life to over 3 years;
Specialized maintenance tools and spare parts kits for vulnerable components are provided, along with on-site installation guidance and operation and maintenance training, offering customers full lifecycle service.
VI. Strict Quality Inspection System to Ensure Product Reliability
Each batch of grates must pass three quality inspections before leaving the factory:
Raw Material Inspection: Compositional spectral analysis of alloy steel is performed to prevent inferior raw materials from entering the production process;
Semi-finished Product Inspection: Non-destructive testing is conducted on the grate bars to check for internal defects such as porosity and cracks;
Finished Product Inspection: Load testing is conducted under simulated high-temperature conditions to test the grate's load-bearing capacity, ventilation performance, and operational stability, ensuring that 100% of the products leaving the factory meet standards.
link:http://www.qyhsmachinery.com
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