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Help CenterTwin Inner Hole Tungsten Carbide Cylinder Rods
Product Spotlights
2. Mirror polished outer surface, high roundness & precise OD tolerance
3. Balanced hardness and impact toughness, anti-chipping after tool forming
4. Good red hardness, stable performance under high-speed deep hole machining
5. Custom outer diameter, dual hole size, overall length available
6. Multiple carbide grades for gun drill & internal coolant drill production
Related Products
1. Product Introduction
This double-hole tungsten carbide round rod is a solid cemented carbide cylinder with two parallel straight coolant through holes on the end face, with mirror polished outer circular surface. It is the exclusive raw blank for manufacturing gun drills, deep hole internal coolant drills, and precision high-temperature deep hole cutting tools.
2. Material & Production Process
Optional Alloy Grades: YG6X, YG8, YG10X, ultra-fine grain cutting tool carbide
Production Flow: WC-Co powder cylindrical pressing → HIP high-temperature sintering → Precision outer cylindrical grinding → Double parallel deep hole drilling → Outer circle mirror polishing
Structural Feature: Two evenly distributed straight coolant holes, consistent wall thickness between holes and outer circle, smooth unobstructed coolant circulation channel
3. Core Advantages
✅ Two parallel cooling holes with stable concentricity, cutting fluid circulates evenly during deep hole drilling, effective cooling and chip removal
✅ Mirror polished outer surface, high roundness, tight outer diameter tolerance, easy secondary grinding and fluting to complete drill tools
✅ Ultra-fine grain carbide substrate, balanced wear resistance and impact resistance, finished gun drills resist edge chipping and breakage
✅ Excellent red hardness, adapt to continuous high-speed deep hole processing under high temperature friction
✅ Full customized dimensions: outer diameter, dual coolant hole diameter, total rod length
✅ Multiple alloy formulas optional, match deep hole machining of steel, stainless steel, aluminum alloy and superalloy
4. Main Application
Cutting Tool Manufacturing: Gun drill blanks, double-hole internal coolant deep hole drill blanks
Precision Deep Hole Machining Industry: Automobile engine parts, fuel injection parts, aerospace precision component drill tools
Mold Processing: High-precision mold deep cooling hole drill blanks
Medical & Precision Equipment: Micro deep hole special drill raw material
5. Customization Service
Size Customization: Custom outer diameter, double coolant hole inner diameter, total rod length
Alloy Grade: Adjust cobalt content to balance wear resistance and anti-impact toughness
Surface Treatment: Sintered matte surface / mirror polished bright outer circle optional
Hole Layout: Custom hole spacing, parallel dual holes or offset double holes per technical drawings
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