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FAQ
LBC05 Grade Cemented Carbide Round Bar
China Lizhou Hard Alloy Source Factory
Grade: LBC05
Classification :
Carbide Rod
keyword：
lizhou
The LBC05 cemented carbide round bar is made from an ultra-fine-grained alloy, offering excellent adhesion for diamond-coated cutting tools. It is particularly well suited for manufacturing small-diameter deep-hole drills and is ideal for machining graphite, composite materials, and similar workpieces.
Product Attributes:
Grade: LBC05
Cobalt content: 6%
Tungsten carbide content: 88%
Grain size: 1.0 μm
Density: 14.8 g/cm³
Vickers hardness: 1600 kg/mm²
Rockwell hardness: 92.3
Flexural strength: 3100 N/mm²
I. Comparative Advantages and Limitations
Advantages |
Limitations |
| Wear resistance is superior to that of ordinary cemented carbides. | Cost is higher than that of medium-coarse-grained cemented carbide. |
| Suitable for high-precision, small-diameter cutting tools. | Not suitable for heavy roughing operations (e.g., intermittent cutting of steel workpieces). |
| Highly compatible with diamond coatings | Anti-diffusion coatings (e.g., TiAlN) are required when machining steel parts. |
II. Scope of Product Application
1. Applicable Processing Materials
Non-metallic hard and brittle materials: graphite, ceramics, carbon-fiber-reinforced polymer (CFRP), and glass-fiber-reinforced polymer (GFRP).
Nonferrous metals: aluminum alloys, copper alloys (require coated, non-stick cutting tools).
Difficult-to-machine materials: titanium alloys and high-temperature alloys (must be used in conjunction with coatings).
2. Typical Cutting Tool Types
Small-diameter cutting tools: micro-drills, milling cutters, and PCB micro-drills with a diameter ≤ 3 mm.
Deep-hole drilling: cutting tools for machining deep holes with a length-to-diameter ratio of ≥10 (e.g., gun drills, BTA drills).
Diamond-coated cutting tools: milling cutters and drills with a diamond coating on the surface, designed for high-speed dry machining.
3. Main Application Areas
Electronics industry: PCB drilling and semiconductor packaging mold machining.
Aerospace: Milling and drilling of composite components (wings, cabins).
Mold manufacturing: precision machining of graphite electrodes and engraving of glass molds.
Automotive industry: Efficient machining of brake discs (carbon fiber) and engine components (titanium alloy).
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