DRILLSTAR CARBIDE TOOLS ARE WORKING IN MANY PLACES AROUND THE WORLD
The Brazed Gun Drill Head is a cost-effective, high-performance solution for deep hole drilling in medium-strength materials, combining a durable carbide cutting tip with a robust steel shank via advanced brazing technology. This design ensures a strong metallurgical bond between the carbide insert and shank, capable of withstanding high axial forces and thermal stresses during prolonged machining. The drill head features a classic dual-flute geometry for balanced chip evacuation and an internal coolant channel to facilitate efficient heat dissipation, making it ideal for applications requiring a balance of precision, productivity, and affordability.
Engineered for hole diameters ranging from 3mm to 50mm and depths up to 1 meter, the Brazed Gun Drill Head offers reliable straightness (≤0.2mm/m deviation) and surface finish (Ra ≤ 1.6μm) in materials like carbon steel, aluminum, and cast iron. Its modular design allows easy replacement of worn carbide tips, reducing tool costs compared to solid carbide alternatives while maintaining consistent performance.
1. High-Quality Brazing Joint: A vacuum-brazed carbide tip (10-15mm length) with a cobalt-rich braze alloy provides a shear strength exceeding 400MPa, ensuring the insert stays securely attached during heavy cutting.
2. Optimized Cutting Geometry: A 118° point angle with a split web design improves centering accuracy and reduces thrust force, while the 25° helix angle promotes smooth chip formation and evacuation in ductile materials.
3. Adjustable Coolant System: The internal coolant channel supports pressures up to 100 bar, with optional nozzles to direct fluid flow for optimal chip flushing in deep bores. External coolant ports are also available for machines without internal delivery systems.
4. Replaceable Inserts: When the carbide tip wears, only the insert is replaced instead of the entire drill, reducing material waste and downtime. Inserts are available in multiple grades for different material groups (ferrous, non-ferrous, abrasive).
5. Standardized Interfaces: The shank features a Morse taper (MT2-MT5) or cylindrical (DIN 228) design, compatible with most gun drilling machines, lathes, and machining centers. Custom shank lengths up to 800mm are available for special applications.
Automotive Components: Processes deep holes in engine blocks, transmission cases, and steering knuckles made from cast aluminum and low-alloy steel, supporting high-volume production with cost-effective tool replacement.
General Machinery: Drills through-holes in gearboxes, pump housings, and flanges, where moderate depth-to-diameter ratios (50:1) and surface finish requirements are common.
Hydraulic Cylinders: Creates bores in mild steel and ductile iron components, ensuring dimensional accuracy for piston rod fitment and seal integrity. The replaceable tip design minimizes downtime in repair shops.
Agricultural Equipment: Used for deep holes in tractor axles and implement frames, handling abrasive cast iron and high-strength steel with consistent performance across varying workpiece sizes.
Mold Making: Machines ejection pin holes in pre-hardened steel molds (35-45 HRC), offering a cost-efficient alternative to solid carbide drills for medium-hardness materials.
Q: How long does the brazed joint last before failing?
A: Properly maintained, the joint can withstand 500+ hours of operation in standard materials. Overloading or insufficient coolant may reduce lifespan, so follow recommended machining parameters.
Q: Can the drill head be resharpened?
A: Yes, the carbide tip can be resharpened 2-3 times using a diamond wheel. After resharpening, recheck the brazed joint for cracks to ensure safety.
Q: What is the temperature limit for the brazed joint?
A: The braze alloy maintains integrity up to 600°C. In high-temperature materials like Inconel, use lower spindle speeds and increased coolant flow to prevent thermal stress.
Q: Is the drill head suitable for blind holes?
A: Yes, but operators must stop feeding 2-3mm before the target depth to avoid damaging the tip when retracting from blind holes.
Q: How to choose between brazed and solid carbide drill heads?
A: Brazed heads are ideal for medium-strength materials (≤45 HRC) and lower aspect ratios (<100:1), offering better cost-performance. Solid carbide is preferred for harder materials and extreme depths.
Product Specification | |
Material | Tungsten Carbide |
Type | Gun Drill Bit |
Model Number | AG Carbide |
Brand Name | DR |
Place of Origin | Shandong, China (Mainland) |
Carbide | ISCAR or Country field |
Certification | CE,ISO |
Use | Metal Drilling |
OEM | Can be OEM |
The Brazed Gun Drill Head is a cost-effective, high-performance solution for deep hole drilling in medium-strength materials, combining a durable carbide cutting tip with a robust steel shank via advanced brazing technology. This design ensures a strong metallurgical bond between the carbide insert and shank, capable of withstanding high axial forces and thermal stresses during prolonged machining. The drill head features a classic dual-flute geometry for balanced chip evacuation and an internal coolant channel to facilitate efficient heat dissipation, making it ideal for applications requiring a balance of precision, productivity, and affordability.
Engineered for hole diameters ranging from 3mm to 50mm and depths up to 1 meter, the Brazed Gun Drill Head offers reliable straightness (≤0.2mm/m deviation) and surface finish (Ra ≤ 1.6μm) in materials like carbon steel, aluminum, and cast iron. Its modular design allows easy replacement of worn carbide tips, reducing tool costs compared to solid carbide alternatives while maintaining consistent performance.
1. High-Quality Brazing Joint: A vacuum-brazed carbide tip (10-15mm length) with a cobalt-rich braze alloy provides a shear strength exceeding 400MPa, ensuring the insert stays securely attached during heavy cutting.
2. Optimized Cutting Geometry: A 118° point angle with a split web design improves centering accuracy and reduces thrust force, while the 25° helix angle promotes smooth chip formation and evacuation in ductile materials.
3. Adjustable Coolant System: The internal coolant channel supports pressures up to 100 bar, with optional nozzles to direct fluid flow for optimal chip flushing in deep bores. External coolant ports are also available for machines without internal delivery systems.
4. Replaceable Inserts: When the carbide tip wears, only the insert is replaced instead of the entire drill, reducing material waste and downtime. Inserts are available in multiple grades for different material groups (ferrous, non-ferrous, abrasive).
5. Standardized Interfaces: The shank features a Morse taper (MT2-MT5) or cylindrical (DIN 228) design, compatible with most gun drilling machines, lathes, and machining centers. Custom shank lengths up to 800mm are available for special applications.
Automotive Components: Processes deep holes in engine blocks, transmission cases, and steering knuckles made from cast aluminum and low-alloy steel, supporting high-volume production with cost-effective tool replacement.
General Machinery: Drills through-holes in gearboxes, pump housings, and flanges, where moderate depth-to-diameter ratios (50:1) and surface finish requirements are common.
Hydraulic Cylinders: Creates bores in mild steel and ductile iron components, ensuring dimensional accuracy for piston rod fitment and seal integrity. The replaceable tip design minimizes downtime in repair shops.
Agricultural Equipment: Used for deep holes in tractor axles and implement frames, handling abrasive cast iron and high-strength steel with consistent performance across varying workpiece sizes.
Mold Making: Machines ejection pin holes in pre-hardened steel molds (35-45 HRC), offering a cost-efficient alternative to solid carbide drills for medium-hardness materials.
Q: How long does the brazed joint last before failing?
A: Properly maintained, the joint can withstand 500+ hours of operation in standard materials. Overloading or insufficient coolant may reduce lifespan, so follow recommended machining parameters.
Q: Can the drill head be resharpened?
A: Yes, the carbide tip can be resharpened 2-3 times using a diamond wheel. After resharpening, recheck the brazed joint for cracks to ensure safety.
Q: What is the temperature limit for the brazed joint?
A: The braze alloy maintains integrity up to 600°C. In high-temperature materials like Inconel, use lower spindle speeds and increased coolant flow to prevent thermal stress.
Q: Is the drill head suitable for blind holes?
A: Yes, but operators must stop feeding 2-3mm before the target depth to avoid damaging the tip when retracting from blind holes.
Q: How to choose between brazed and solid carbide drill heads?
A: Brazed heads are ideal for medium-strength materials (≤45 HRC) and lower aspect ratios (<100:1), offering better cost-performance. Solid carbide is preferred for harder materials and extreme depths.
Product Specification | |
Material | Tungsten Carbide |
Type | Gun Drill Bit |
Model Number | AG Carbide |
Brand Name | DR |
Place of Origin | Shandong, China (Mainland) |
Carbide | ISCAR or Country field |
Certification | CE,ISO |
Use | Metal Drilling |
OEM | Can be OEM |
