DM M12 Ø10.9mm Long Flat Bit for High-Speed Thermal Friction Drilling
Tungsten Carbide Chipless Flow Drilling Tool for Flush Surface Collar Trimming & High-Strength Thread Forming
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Features
Thermal Friction Flow Forming: Operates at 600°C+ to plasticize metal and extrude a strong threaded bushing in seconds.
Replaces Rivet & Weld Nuts: Creates a monolithic extruded boss with 3x the original sheet metal wall thickness.
Ultra-Hard Tungsten Carbide: Micro-grain solid carbide substrate provides extreme heat resistance and 10,000+ hole tool life.
Flat-Mouth Flush Seating: Produces a clean, flat counterbored rim ideal for flush fastener seating without raised collars.
In-Depth Engineering Description & Technical Overview
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Overview of DM M12 Ø10.9mm Long Flat Thermal Friction Drill Bit
The DM M12 Ø10.9mm Long Flat Bit for Thermal Friction Drilling by DUOMI CNC is an advanced tungsten carbide flow drilling tool engineered for high-efficiency, chipless hole forming in thin-walled metals and structural profiles. By generating localized frictional heat (reaching 600°C–800°C), this tool plasticizes the target material to form a continuous cylindrical bushing underneath while simultaneously milling off the raised surface collar. The result is a smooth, flush surface ready for high-torque thread tapping without secondary deburring.
Technical Specifications & Operating Parameters
- Thread Compatibility: Formed for M12 metric threads (pre-hole size Ø10.9 mm)
- Cutting Geometry: Long Flat-Mouth (Planed Surface finish)
- Material Composition: Micro-grain Solid Tungsten Carbide (ISO K20/K30 grade)
- Recommended Spindle Speed: 1,500 – 3,000 RPM (workpiece material dependent)
- Process Temperature: 600°C – 800°C friction zone plasticization
- Hole Accuracy: Tolerances within ±0.02 mm
- Tool Life Expectancy: 5,000 to 10,000 cycles with proper thermal paste application
Technical Advantages & Value Proposition
- Chipless Friction Hole Forming: Eliminates metal swarf and chip removal steps, maintaining a clean workspace and preventing internal contamination in sealed pipes or liquid-cooling manifolds.
- Integrated Surface Milling: The long flat-mouth design features a cutting collar that flushes the surface during penetration, delivering clean aesthetics and precise component alignment.
- 3x Wall Thickness & Thread Strength: Expands thin sheet metal into a thick bushing, providing 200% to 300% higher thread pull-out and torsional resistance compared to riveted fasteners or weld nuts.
- Rapid Operational Cycle: Complete hole forming and collar milling in 2 to 6 seconds per hole, dramatically increasing throughput on automated CNC machining centers.
- Versatile Material Support: Suitable for carbon steel, stainless steel (304, 316), aluminum alloys, copper, brass, and high-temp alloys.
Industrial Applications
- Automotive & Aerospace: Chassis attachment points, exhaust brackets, structural framing, and fluid tubing.
- HVAC & Liquid-Cooling Systems: Multi-layer heat exchanger manifolds, radiator tubes, and central heating piping.
- Stainless Steel Fabrication: Flush joints for metal furniture, architectural handrails, and lighting structures.
- Machinery Manufacturing: Heavy-duty bearing housings and sensor mounting ports.
Purchase & Delivery Guarantees
Direct Factory Assurance — Built, Tested, and Supported from Dongguan to Your Shop Floor
Runs on Your System
Standard GSK control (100% Fanuc G-code compatible) or optional Mitsubishi/Siemens. Direct CAD file import for code-free toolpath generation.
Factory Video FAT
Live drilling/tapping tests on your actual workpiece recorded before dispatch. Final 50% balance payment is paid only after your video approval.
40-Day Build & Rugged Crate
Guaranteed maximum 40-day manufacturing cycle. Sealed in anti-rust vacuum aluminum foil and bolted in fumigation-free timber crates (EXW/FOB/CIF).
Direct Engineer Care
Direct 1-on-1 WhatsApp group with your machine's build engineers, 12-month full warranty, and critical replacement parts dispatched via DHL within 24–48h.
Every DUOMI machine is built under a transparent 13-step factory production & responsibility chain.
Parameters
Download Technical Brochure| Thread Size | M12 |
| Diameter | Ø10.9 mm |
| Finishing | Plane Surface |
| Materials | Tungsten Carbide |
| Brand | DUOMI ( DM ) |
Machining Samples
Real parts processed by our machines
Frequently Asked Questions
We “only” do drilling & tapping. Why do customers still choose Duomi over general-purpose CNC machines?
What does “Your part defines the solution” mean in practice?
What is the key difference between a standard type and a long flat type thermal drill bit?
What spindle speed and axial force are required for the DM M12 Ø10.9mm flat bit?
What materials can be processed with this thermal friction drill bit?
How does thermal friction drilling enhance thread strength compared to traditional tapping?
Is special lubrication or thermal paste required during operation?
Can this bit be used on standard CNC milling or drilling machines?
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