Synergistic Effects of Material and Manufacturing Process on Pulverized Coal Distributors and Optimization Directions

Synergistic Effects and Optimization Directions of Material and Manufacturing Process for Pulverized Coal Distributors

Material and manufacturing process are not isolated; their synergistic matching is key to achieving performance:

1. Case Study of Synergistic Matching:
   If NM500 wear-resistant steel is selected as the base material but manual welding is used without polishing the weld seams, the raised welds will disrupt the flow field. Even with wear-resistant material, distribution accuracy will decline. Conversely, if ordinary carbon steel is used but treated with precision machining and ceramic coating, good performance can still be achieved under medium to low loads.
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3. Optimization Directions:
   • Low Cost, High Wear Resistance: Adopt a composite structure of "Q345 carbon steel + localized NM500 overlay welding" to control costs while reinforcing vulnerable wear areas.
   • High Precision Automation: Promote integrated processes such as "CNC machining + robotic welding + online precision inspection" to ensure geometric accuracy and batch stability.
   • Long-Term Corrosion and Wear Resistance: For corrosive working conditions, use a combination of "316L stainless steel + ceramic coating" to balance corrosion resistance and wear resistance. Summary

The performance of a pulverized coal distributor is essentially a comprehensive reflection of "material wear resistance" and "manufacturing process precision":

• Material determines the equipment's "durability baseline"—whether it can resist coal powder erosion and extend service life.
• Manufacturing Process determines the equipment's "performance ceiling"—whether it can accurately realize flow field design and ensure distribution precision.
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In practical applications, it is necessary to select the optimal matching scheme of "material - process" based on blast furnace coal injection volume, coal powder characteristics (hardness, corrosiveness), and cost budget to ensure long-term stable operation of the equipment and provide guarantees for efficient blast furnace production.