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How to Extend the Service Life of Drill Rods Through Regular Inspections
Regular inspections of drill rods and key measures to extend their service life must be combined with structural optimization, maintenance standards, and operational conditions. The specific methods are as follows:
1. Regular Inspections and Wear Control
High-frequency inspection standards
Inspect the drill rod surface for cracks, dents, and wear at connection points (such as the drill rod tail and threads) before and after each shift. If diameter wear exceeds 10%, replace immediately.
Use a caliper to measure critical dimensions (e.g., taper fit length ≥25mm) to ensure compatibility with the rock drill and prevent misalignment.
Cleaning and Lubrication
After removing rock dust and oil stains, apply specialized lubricant (e.g., NLGI Grade 2 lithium-based grease) to threaded connections to reduce friction resistance.
Flush the central hole in reverse to prevent rock dust buildup and blockages.
2. Operational and Process Optimization
Standardized Operation
Use a chisel remover to disassemble the chisel rod to avoid hammering damage to the threads.
Adjust the drilling position when encountering hard foreign objects to reduce impact loads.
Technical Adaptation
Prioritize hydraulic rock drilling technology to improve energy transmission efficiency and reduce fatigue stress on the chisel tail.
Adjust the striking frequency based on rock hardness to avoid prolonged impact on a single point (exceeding 20 seconds).
III. Storage and Repair
Storage Conditions
Store in a dry, well-ventilated area, apply anti-rust oil, and stack neatly to prevent deformation.
Repair Strategies
Minor wear can be repaired by weld overlay; severe damage requires replacement. Backup drill rods must be regularly inspected for initial cracks.
IV. Long-Term Maintenance Recommendations
Conduct a comprehensive inspection of the sleeve clearance (replace if exceeding 8 mm) and drill rod guidance monthly.
Maintain maintenance records to track drill rod usage cycles and replacement frequencies.
Through systematic inspections and maintenance, the risk of drill rod breakage can be significantly reduced, extending service life by 30%–50%.
How to Extend the Service Life of Drill Rods Through Regular Inspections
Regular inspections of drill rods and key measures to extend their service life must be combined with structural optimization, maintenance standards, and operational conditions. The specific methods are as follows:
1. Regular Inspections and Wear Control
High-frequency inspection standards
Inspect the drill rod surface for cracks, dents, and wear at connection points (such as the drill rod tail and threads) before and after each shift. If diameter wear exceeds 10%, replace immediately.
Use a caliper to measure critical dimensions (e.g., taper fit length ≥25mm) to ensure compatibility with the rock drill and prevent misalignment.
Cleaning and Lubrication
After removing rock dust and oil stains, apply specialized lubricant (e.g., NLGI Grade 2 lithium-based grease) to threaded connections to reduce friction resistance.
Flush the central hole in reverse to prevent rock dust buildup and blockages.
2. Operational and Process Optimization
Standardized Operation
Use a chisel remover to disassemble the chisel rod to avoid hammering damage to the threads.
Adjust the drilling position when encountering hard foreign objects to reduce impact loads.
Technical Adaptation
Prioritize hydraulic rock drilling technology to improve energy transmission efficiency and reduce fatigue stress on the chisel tail.
Adjust the striking frequency based on rock hardness to avoid prolonged impact on a single point (exceeding 20 seconds).
III. Storage and Repair
Storage Conditions
Store in a dry, well-ventilated area, apply anti-rust oil, and stack neatly to prevent deformation.
Repair Strategies
Minor wear can be repaired by weld overlay; severe damage requires replacement. Backup drill rods must be regularly inspected for initial cracks.
IV. Long-Term Maintenance Recommendations
Conduct a comprehensive inspection of the sleeve clearance (replace if exceeding 8 mm) and drill rod guidance monthly.
Maintain maintenance records to track drill rod usage cycles and replacement frequencies.
Through systematic inspections and maintenance, the risk of drill rod breakage can be significantly reduced, extending service life by 30%–50%.
