The 4-button carbide drill bit is the upgraded version of the 3-button bit, specifically designed for ultra-hard and high-intensity drilling operations in blast furnace taphole opening, mine rock drilling and tunnel engineering. Featuring four symmetrically arranged tungsten carbide button teeth, it delivers more balanced force distribution, stronger impact and steadier penetration, making it the go-to tool for extremely hard furnace linings and super-hard rock layers, as well as a cost-effective choice for heavy-duty taphole drilling in metallurgy and mining industries.
Material Composition
The bit body is forged from high-quality 45# steel, 40Cr or 42CrMo alloy steel, offering high toughness and excellent resistance to fracture under continuous impact. The four button teeth are made of YG8 tungsten carbide, which features ultra-high hardness, strong wear resistance and high temperature resistance, keeping sharp cutting edges even in extremely hard media. The combination of a high-strength steel body and premium carbide teeth ensures stable performance under heavy-load, high-temperature and strong-impact working conditions.
Functions and Working Efficiency
The four-tooth symmetrical design delivers more uniform impact force to the bottom of the hole, providing a larger cutting surface and higher rock-breaking efficiency. It effectively breaks high-temperature furnace mud, coke layers, extremely hard furnace linings and super-hard rock layers, with high drilling straightness, smooth hole forming and low vibration. Compared with the 3-button bit, the 4-tooth structure offers stronger impact and pressure resistance. Under the same working conditions, it achieves faster drilling speed and a longer service life per bit, significantly reducing the overall cost of heavy-duty opening operations.
Key Advantages
- Stronger impact force: Even distribution across four teeth reduces load per tooth, delivering more efficient rock breaking and greater ease in hard layers.
- Impact and pressure resistance: The more robust structure resists tooth chipping, loss and body fracture under ultra-high-strength drilling conditions.
- Stable drilling: The symmetrical four-tooth design effectively suppresses wobbling, prevents hole deviation and ensures high hole quality.
- Longer service life: Wear-resistant, high-temperature-resistant carbide teeth combined with a high-strength steel body extend service cycles and reduce replacement frequency.
- Better cost efficiency: Superior service life and efficiency in heavy-load conditions offer higher long-term value than 3-button bits.
Suitable Working Conditions
The 4-button carbide drill bit is ideal for demanding operations that place higher requirements on the tool:
- Blast furnace taphole opening and opening of extremely hard furnace linings
- Drilling in super-hard rock layers and high-intensity rock drilling
- Heavy-duty rock breaking in tunnel and mining projects
- An upgraded choice for higher drilling efficiency in conventional and medium-hard conditions
Note: For conventional and medium-hard operations, the 3-button bit is sufficient and more economical; the 4-button bit is better suited for hard layers, heavy loads and applications requiring higher drilling efficiency.
Application and Customization
The 4-button carbide drill bit is widely used in heavy-duty scenarios such as blast furnace opening, mine rock drilling and tunnel engineering. We support customized sizes, steel materials and tooth formulas according to customer equipment, bore size and working conditions. All products are strictly inspected before shipment to ensure stable quality and reliable performance.
Shandong Feiteng Metal Products Co., Ltd. provides reliable drilling tools with stable quality and competitive price. We sincerely welcome global customers for visits, testing and long-term win-win cooperation.