Sometimes we need to use a Drill Bit to make a hole in the surface of iron, but what kind of drill is good for drilling iron? Do you know the types and uses of Drill Bits?
In fact, there are many types of drill, mainly according to its different uses and distinguish, that is, drill what kind of drill. In order to let you better understand the knowledge of drill, the following xiaobian will give you a simple introduction to the use of various commonly used drill.
Type of drill iron
Drill bits are usually made of high-speed Tool steel or cemented carbide. In factories, high-speed steel is often used, and coolant is added at different speeds depending on the material used.
1, generally is black bit, drill the metal bit material is generally high speed steel, in the general metal material (steel, alloy steel, cast iron, cast steel, non-ferrous metals) on drilling, cooperate to use metalworking bit. However, pay attention to drilling on metal materials, the speed should not be too high, easy to burn the edge of the drill.
Some are now gold-plated with rare hard metal films, made of tools steel and the like, hardened by heat treatment. The tip is ground to an equal Angle and slightly backward to form an acute edge. Drilling does not harden steel, iron, aluminum heat treatment, which tends to stick to the drill bit, drilling needs to be lubricated with soapy water.
2, in the concrete material and stone material drilling, the use of Impact Drill, with stone drill, cutter head material is generally hard alloy. Ordinary household, not cement wall drilling, with ordinary 10mm specifications of the hand electric drill.
3. Drill wood. Drilling on wood materials, with the use of woodworking drill, woodworking drill cutting sales, the hardness of the tool is not high, the tool material is generally general high-speed steel. There is a small sharp point in the center of the drill tip, and the opposite Angle is relatively large, or even no Angle. For good holding position. The same drill that drills metal can also drill wood. Because wood is easy to heat, brittle chips are not easy to come out, so we must slow down the speed, often exit to remove brittle chips.
4, in the higher hardness of ceramic tile and glass drilling ceramic tile drill, Cutting Tool material using tungsten carbon alloy, because the tool hardness is higher, poor toughness, need to pay attention to the use of low speed and no impact.
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