Why choose HSS Twist Drill Bits

High-Speed Steel Twist Drill Bit Product Description

High-speed steel (HSS) twist drill bits from DANYANG RIGHTOOL CO., LTD are designed for professional drilling performance across metalworking, woodworking, and industrial manufacturing environments. Made from premium HSS, these drill bits offer excellent hardness, heat resistance, and cutting stability, making them ideal for high-speed drilling operations. The helical flutes of an HSS twist drill bit ensure smooth chip evacuation, reduced friction, and enhanced precision, allowing users to achieve clean, accurate holes with consistent reliability.

Applications
HSS twist drill bits are widely used in machining workshops, construction projects, automotive repair facilities, electrical installations, and DIY applications. They are suitable for drilling in materials such as carbon steel, stainless steel, cast iron, aluminum, copper, brass, hardwood, softwood, and thermoplastics. These bits are commonly used for creating through holes, pilot holes, tapping holes, and precision positioning holes across a variety of industrial processes.

Key Advantages

• Superior Wear Resistance: High-speed steel ensures excellent hardness and maintains cutting edge sharpness even under high temperatures.

• Stable Performance: Helical flute design increases drilling speed and provides smooth chip discharge.

• High Precision: 118° or 135° split-point tip reduces walking and delivers accurate hole placement.

• Versatile Hard-Material Capabilities: Suitable for metals and other rigid materials that require strong cutting force.

• Long Service Life: Optional surface treatments such as black oxide and titanizing further improve durability and corrosion resistance.

Specification Table

Manufacturing Process Flow

1. Material Selection: Premium HSS steel rods are chosen according to grade requirements.

2. Cutting & Preforming: Rods are cut to length and shaped for drilling geometry.

3. CNC Flute Grinding: Multi-axis grinding machines create precise helical flutes.

4. Heat Treatment: Controlled hardening and tempering enhance tool strength and toughness.

5. Surface Finishing: Oxide coating, polishing, or TiN plating improves wear resistance.

6. Quality Control: Each bit undergoes inspection for concentricity, hardness, dimensions, and surface precision.

Usage Instructions

• Select the correct drill bit diameter and tip angle for the material.

• Firmly secure both drill and workpiece to avoid vibration.

• Start drilling at a slow speed, increasing RPM as required.

• Use coolant or cutting oil when drilling metal to reduce heat.

• Clear chips regularly to prevent clogging and bit overheating.

• Replace any dull or damaged bits to maintain drilling efficiency.

FAQ
Q1: Can HSS twist drill bits drill stainless steel?
Yes, especially HSS 6542/M2 with a 135° split point.

Q2: How do I prevent overheating?
Use cutting fluid and proper drilling speed.

Q3: Are these bits suitable for hand drills?
Yes. They are compatible with hand drills, bench drills, and CNC machines.

Core Keywords
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