Normally cobalt is mixed with tungsten carbide to reduce the iron’s reactivity. These tools can be used to drill hard materials such as cast iron. HSS requires more sharpening terms due to abrasion.Ĭobalt drill bits are made when 5-8% cobalt is mixed with the steel alloy. HSS is much faster than the regular steel drill bits. HSS drill bits can be used for wood, plastic, and soft steel drilling. It is mostly used for cutting tools, blades, and drill bits. These can be optional for the tungsten carbide drill bits. These 09 types of masonry drill bits are highly recommended for your tasks. But those are not harder than tungsten carbide. Tungsten Carbide and Other Drill BitsĪs I mentioned above, cobalt, titanium, and HSS are used for making drill bits. Masonry carbide drill bits are used on rotary hammers hence, you do not need to apply additional force or pressure for the drilling task. You can maintain 9000 – 11000 surface feet per minute (SFM). When using a carbide drill bit on concrete, you should use lower RPM like 400 – 600 RPM with a hammering action. Carbide drill bits can be used as a huge versatile drill bit. As well as, some carbide drill bits are available for metal, wood, cast iron, titanium, PVC, fiber and plastic, etc. Carbide Drill Bit Usage and Cutting SpeedĬarbide drill bits can be used to drill harder and tough materials like concrete, stone, tiles (without hammering action), and concrete with rebars. Hence these bits can be used to drill different materials like concrete and rebars together. As well as, these bits are stronger than regular cutting heads. The material can crush into powder when the cutting head has more edges. In some special cases, it has 5-6 cutting heads. The carbide drill bit cutting head has 2 edges, 4 edges mainly. As a result of this, it can transfer more debris to the outside, even at lower RPM. The carbide drill has an expanded flute design. It has designed to remove inside debris through the flute.
Normally, the drill bit flute design is spiral. But rail-structured carbide drill bits are used on rotary hammers. And also, we can see circular and hex-shaped shanks in light hammer drills.
CARBIDE DRILL BITS PLUS
These bits are named as SDS plus and SDS max drill bits. Mostly, carbide drill bit shank is 4 rails or 5 rails. According to the purpose of the drill bit, shank geometry can be varied. Carbide Drill Bit StructureĪ drill bit shank is named as the driving end of the drill bit. There are other materials for the drilling process, such as cobalt, HSS, and Titanium. Hammer drill bits are made with tungsten carbide to resist the hammering function, thermal resistance, and wearing resistance during the drilling process.
Most drill bits, and cutting tools are made with tungsten carbide. Using this table, you can realize how hard is the tungsten carbide material.ĭue to its high toughness, it is used for cutting materials. K −1 Hardness 4-4.5 Mohs scale 9-9.5 Mohs scale.In order to reduce the interaction with iron, cobalt is mixed with carbide.Ĭarbide Drill Bit Compare with Steel Properties Steel Tungsten Carbide Melting point 1,370 ☌ (2,500 ☏) 2,870 ☌ (5,200 ☏) Boiling point 2,800 ☌ (5,072 ☏) 6,000 ☌ (10,830 ☏) Thermal Expansion 11.0 ~ 13.0 µm
Tungston is a really hard material, and its hardness has increased by adding carbon. The Carbide drill bit is made with tungsten and carbon mixing.
CARBIDE DRILL BITS HOW TO
How to Sharpen a Carbide Drill Bit? How Is Carbide Drill Bit Made?.Carbide Drill Bit Usage and Cutting Speed.
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