Release time：2020-01-16 18:44 Browse：
How to Maintain Drilling Efficiency When Self-Drilling Screws Get Longer
When self-drilling screws are extended in length, maintaining high drilling efficiency is crucial. Here are some key strategies:
1. Optimize the Drill Point Design
Choose the right drill point size (e.g., #3 or #5):
Longer screws typically use a #5 drill point, which has stronger drilling capability, suitable for thicker steel (up to 6mm).
Use enhanced chip removal design:
Features like triple flutes or crescent grooves help to remove chips quickly and avoid clogging.
2. Use Proper Heat-Treated Materials
Select high-strength alloy steel (e.g., 10B21) with proper heat treatment to ensure the drill tip has sufficient hardness and toughness, preventing tip breakage or dulling.
3. Apply Advanced Coatings
Coatings like Ruspert or Zinc + Sealer reduce friction and heat during drilling, helping the screw maintain performance under continuous operation.
4. Ensure Straightness and Precision
Cold heading process ensures that the screw shank remains straight, preventing wobbling or deviation during drilling.
5. Provide Proper Installation Guidance
Recommend using professional power tools with consistent torque and proper RPM to avoid underperformance.
