| Flute Diameter1（mm） | Flute Length1 （mm） | Flute Diameter2（mm） | Flute Length2（mm） | Shank Diameter（mm） | Overall length（mm） |
| 3 | 8 | 6 | 30 | 6 | 75 |
| 4 | 11 | 6 | 30 | 6 | 75 |
| 5 | 15 | 8 | 40 | 8 | 100 |
| 6 | 20 | 8 | 45 | 8 | 100 |
| 8 | 25 | 10 | 50 | 10 | 100 |
| 10 | 30 | 14 | 60 | 14 | 120 |
| 12 | 35 | 16 | 70 | 16 | 150 |
| 14 | 40 | 18 | 75 | 18 | 150 |
Carbide step drills, like other carbide cutting tools, are known for their durability, hardness, and resistance to wear. These tools are designed for drilling holes with multiple diameters in a single operation, often referred to as step drilling. Here are some key features and characteristics of carbide step drills:
Carbide step drills are primarily made from tungsten carbide, a hard and wear-resistant material that provides superior cutting performance and longevity.
Tungsten carbide is exceptionally hard, allowing carbide step drills to maintain their sharp cutting edges even when drilling through tough materials.
Carbide step drills have multiple cutting steps or levels along their flutes. Each step corresponds to a specific hole diameter, allowing for drilling different-sized holes in a single pass.
These drills can operate at high cutting speeds, making them efficient for machining operations where productivity and precision are essential.
Carbide step drills can be used on a variety of materials, including metals (e.g., steel, aluminum, stainless steel), plastics, wood, and composites. Their versatility is valuable in different industries.
Carbide step drills are designed for creating holes with precise depths and diameters, making them suitable for applications where hole tolerances are critical.
These drills can withstand high temperatures generated during drilling, reducing the risk of overheating and workpiece deformation.
Carbide step drills typically have a helical flute design that aids in efficient chip evacuation, reducing the chance of chip clogging and improving the drilling process's overall efficiency.
Many carbide step drills are coated with specialized coatings such as titanium nitride (TiN), titanium carbonitride (TiCN), or titanium aluminum nitride (TiAlN). These coatings enhance performance by reducing friction, increasing wear resistance, and extending tool life.
Due to their hardness and wear resistance, carbide step drills have a longer lifespan compared to some other drilling tools, reducing the frequency of tool changes and increasing productivity.
Although carbide step drills may have a higher initial cost than some other drills, their extended tool life and ability to perform multiple operations in one pass often make them cost-effective in the long run.
Proper care and maintenance, including avoiding excessive heat generation and using cutting fluids as needed, can help prolong the lifespan and maintain the sharpness of carbide step drills.
The primary advantage of carbide step drills is their ability to create holes with multiple diameters in a single operation. This eliminates the need for multiple tool changes and setups, streamlining the drilling process and reducing machining time.
With carbide step drills, there's no need to change tools or adjust machine settings between drilling different-sized holes. This significantly reduces setup time and minimizes the chance of errors associated with tool changes.
Carbide step drills are designed to provide precise hole diameters and depths. This level of accuracy is crucial in industries where tight tolerances are required, such as aerospace and automotive manufacturing.
These drills can operate at high cutting speeds, which improves productivity and reduces cycle times in machining operations.
Carbide step drills can be used on various materials, including metals, plastics, wood, and composites. Their versatility makes them suitable for a wide range of applications across different industries.
Carbide step drills are made from tungsten carbide, a hard and wear-resistant material. This results in extended tool life, reducing the frequency of tool replacements and associated costs.
Carbide step drills can withstand high temperatures generated during drilling, reducing the risk of overheating workpieces and tool wear.
Many carbide step drills feature a helical flute design that aids in efficient chip removal. This design minimizes chip clogging and ensures smoother drilling operations.
The precise geometry and sharp cutting edges of carbide step drills contribute to a smoother and more finished hole surface compared to some other drilling tools.
While carbide step drills may have a higher initial cost than some other drilling tools, their ability to perform multiple operations in a single pass and their long tool life often make them cost-effective in the long run.
The heat resistance and precision of carbide step drills help minimize workpiece deformation during the drilling process, ensuring that the final product meets dimensional requirements.
Carbide step drills are particularly useful in mass production environments where efficiency and consistency are critical factors in meeting production targets.
The purpose of applying a coating to a Carbide step drills is to enhance its performance, durability, and overall effectiveness in various machining operations.
TiN is a popular coating choice for Carbide step drills. It offers excellent wear resistance and provides a protective layer on the tool's surface, reducing friction and extending tool life. TiN coatings are effective when machining non-ferrous materials and can enhance performance in general-purpose milling applications.
TiCN coatings offer improved hardness and heat resistance compared to TiN. They are suitable for machining ferrous materials, including steel and cast iron. TiCN coatings provide excellent wear resistance, reduced friction, and increased tool life.
AlTiN coatings are known for their exceptional hardness, high-temperature resistance, and excellent wear resistance. They are suitable for machining abrasive materials, such as hardened steels and stainless steels. AlTiN coatings provide extended tool life and enhanced performance in high-speed machining applications.
DLC coatings offer excellent hardness, low friction, and high lubricity. They are effective when machining aluminum, copper, and non-ferrous materials. DLC coatings can reduce built-up edge and enhance the chip flow, resulting in improved surface finish and reduced cutting forces.
Carbide step drills find applications in various industries and are particularly useful in scenarios where multi-step hole drilling, precision, and efficiency are essential. Here are some common applications for carbide step drills:
Carbide step drills are often used to create holes in sheet metal for fasteners, such as rivets, screws, and bolts. They are crucial in industries like automotive, aerospace, and HVAC for assembling components.
In the production of electrical enclosures, control panels, and circuit boards, carbide step drills are used to create holes for cable glands, connectors, and other electrical components.
Carbide step drills are employed to create various-sized holes in pipes and pipe fittings for plumbing applications, including drilling holes for faucets, valves, and drainage systems.
In automotive manufacturing, carbide step drills are used for drilling holes in body panels, chassis components, and engine parts. They are crucial for assembly and fastening operations.
Carbide step drills are utilized for drilling holes in aircraft components, including wing structures, landing gear, and engine components. They contribute to the assembly and maintenance of aircraft.
Furniture makers use carbide step drills to create holes for dowels, screws, and other fasteners when assembling wooden furniture pieces.
Carbide step drills are employed in metalworking applications for drilling holes in a variety of materials, including steel, aluminum, brass, and copper.
In the manufacturing of wind turbines and solar panels, carbide step drills are used for drilling holes in structural components and mounting systems.
Carbide step drills can be used in the fabrication of plastic and composite components, such as drilling holes in automotive body panels, marine structures, and sporting goods.
In HVAC systems, carbide step drills are employed for drilling holes in ductwork and air handling units to accommodate pipes, sensors, and control components.
Medical device manufacturers use carbide step drills to create holes in surgical instruments, implants, and medical equipment.
In the telecommunications industry, carbide step drills are used for creating holes in enclosures and equipment racks to accommodate cables, connectors, and networking components.
In woodworking applications, carbide step drills can be used to drill holes in wooden structures, furniture, and cabinetry for joinery and fastening purposes.
Carbide step drills are employed in the production of molds used in the plastics and die-casting industries. They create holes for ejector pins, cooling channels, and other mold components.
In dental laboratories and clinics, carbide step drills are used for creating holes in dental prosthetics, implant components, and orthodontic appliances.
A carbide step drill is a cutting tool designed to drill holes with multiple diameters in a single operation. It is made primarily of tungsten carbide, a hard and wear-resistant material.
Carbide step drills have multiple steps along their flutes, each corresponding to a different hole diameter. As the drill is fed into the workpiece, it sequentially enlarges the hole diameter as it progresses through the steps.
Carbide step drills can be used on a variety of materials, including metals (e.g., steel, aluminum, stainless steel), plastics, wood, and composites.
The primary advantages include multi-step hole drilling capabilities, reduced setup time, precision, high-speed drilling, versatility, and long tool life.
Consider factors such as the material you're drilling, the required hole sizes, depths, and the specific steps you need. Consult the manufacturer's recommendations for guidance.
Carbide step drills can be reconditioned by specialized tooling services. However, resharpening may be limited due to the complex multi-step design.
Carbide step drills find applications in industries such as automotive manufacturing, aerospace, metalworking, woodworking, plumbing, and electronics manufacturing, among others.
Safety precautions include wearing appropriate personal protective equipment (PPE), securing workpieces, and following manufacturer-recommended speeds and feeds to ensure safe and efficient drilling operations.
Carbide step drills are ideal for specific applications where multiple hole sizes are needed in one operation. However, for standard single-hole drilling, traditional twist drills may be more economical.
Proper maintenance includes avoiding excessive heat generation during drilling, using cutting fluids when needed, and periodically inspecting and reconditioning the drill to maintain its cutting edge sharpness.
Carbide step drills are typically more expensive upfront due to their specialized design and carbide material. However, their efficiency and longevity often make them cost-effective for specific applications.
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