The bimetallic hole opener is an efficient and durable drilling tool. Its functions and application scenarios are mainly based on its special structure and material design. The following are its core functions and features:
1. Multi-material applicability
Metallic materials: can cut metal plates such as stainless steel, low carbon steel, aluminum, copper alloy, etc.
Non-metallic materials: suitable for wood, plastic, acrylic, composite materials, etc.
Special scenarios: commonly used in fields such as pipeline installation and electrical wiring that require precise hole opening.
2. Advantages of bimetallic structure
Outer layer high hardness material: usually high-speed steel (HSS) or cobalt-containing alloy, providing wear resistance and high temperature resistance.
Inner layer tough matrix: using materials such as spring steel to absorb impact vibration and reduce the risk of tooth collapse.
Laser welding process: ensure that the two metals are tightly combined and improve overall strength.
3. Efficient cutting performance
Tooth shape optimization design: alternating tooth shape (such as left/right helical teeth) reduces friction heat and smooth chip discharge.
High speed compatibility: supports high-speed operation of equipment such as angle grinders and magnetic drills (such as above 3000 RPM).
Thin plate special models: Some hole openers are designed with fine pitch to prevent deformation of thin plate materials.
4. Special function expansion
Center positioning pin: Some models have built-in spring-loaded positioning pins to ensure that the drill does not slip.
Stepped aperture: Through the adjustable cutter head design, multi-diameter stepped holes can be achieved in a single operation.
Surface treatment technology: Titanium nitride (TiN) coating can reduce the friction coefficient and extend the life by more than 30%.
5. Economic and environmental protection
Repeated grinding characteristics: Support professional tool grinders to repair tooth shape and reduce long-term use costs.
Low energy consumption design: Compared with plasma cutting, energy consumption is reduced by 90% and no harmful gases are generated.
Material utilization: Precise hole opening reduces waste, especially suitable for precious metal processing scenarios.
Typical application cases:
HVAC system installation: Quickly open holes on galvanized air ducts to connect branch pipes.
Automobile modification: machining positioning holes for roll cages or chassis parts.
Art installation production: realizing precise pattern opening on special-shaped metal surfaces.
Precautions for use:
Cooling and lubrication: It is recommended to use special cutting fluid during metal processing to reduce thermal stress.
Speed matching: Adjust the speed according to the size of the hole diameter. It is recommended to be ≤1500 RPM for holes above Φ30mm.
Safety protection: It must be used with a safety shield to prevent chips from splashing.
The bimetallic hole opener balances cost and performance through innovations in material science, becoming an indispensable and efficient processing tool in modern manufacturing. Its technical iteration direction is developing in the direction of nano-coating, intelligent wear monitoring, etc.
Hole Saws, metal hole saw, bi-meal hole saw
Bi-Metal hole saws
High speed steel Bi-metal Hole Saws are rugged cutting tools designed to cut accurate holes in machinable materials up to 1-3/8'', 35mm thick.
Ranging in size form12mm to 65mm in diameter, they can be uses in portable electric, air tools, drill presses, lathes, boring mills, milling machines or any other machine which has a rotating spindle.
Hole Saws have 4/6 vari-pitch tooth design and are recommended for cutting steel and cast iron pipe, steel plates, aluminium, copper, brass, stainless steel, wood and plastics, Furnished in standard size as listed and in handy assortments
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