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[Chemical Knowledge]：What drill bit is used to drill plastic? Hand in hand to teach you how to choose

Read： 1628 Time：14months ago Source：Transform the World with Simplicity

Drill bit is one of the most basic tools for drilling operations. There are many types of drill bits, and choosing a drill bit suitable for drilling plastics also requires careful consideration and selection. The following is an introduction to what kind of drill bit is more suitable for drilling plastic and how to choose the right drill bit.

1. drill bit type

1. Cobalt carbide drill bit

Cobalt carbide drill bit is one of the most commonly used drill bits, but also the first choice in the hearts of many workers. Their cutting angle is relatively sharp, can be polyethylene, polyoxymethylene and other wear-resistant plastic drilling. Moreover, the cobalt carbide drill bit has high strength, good wear resistance and long service life.

2. High-speed steel drill

high-speed steel drill bits have good cutting performance and are suitable for many plastic materials. However, it should be noted that the high-speed steel drill should take a lower speed, so as not to break the drill or burn.

3. tungsten steel drill bit

relative to cobalt carbide drill bit, high speed steel drill bit, tungsten steel drill bit cutting angle is not particularly sharp. However, its hardness is very high and its service life is long. Tungsten steel drill bits can effectively drill some plastics, but you need to pay attention to changing the speed and feed speed to avoid sliding the drill hole.

2. drill bit material

1. Carbide

drill bit material affects its performance, accuracy and durability. Carbide materials are widely used in various mechanical processing because of their high hardness and low thermal expansion rate. Among them, cobalt carbide is the most commonly used drill bit material.

2. high-speed steel

high-speed steel has become a material widely used in drill manufacturing because of its high cutting performance and strong wear resistance. However, the wear resistance of high-speed steel is relatively poor compared to other materials, and it is necessary to pay attention to adjusting the speed, coolant and other factors during use.

3. tungsten steel

tungsten steel is commonly used in the system of drill raw materials, because of its high hardness and thermal stability, suitable for hard plastic, wood-plastic materials for drilling.

3. Precautions

1. Select the appropriate speed. The speed of the drill bit is too low will cause the heat to be too high, and even cause the drill bit to break; the speed is too high will cause melting, barbecue, vibration and other phenomena.

2. Choose the right drill diameter. If the diameter of the drill bit is too small, it will cause problems such as difficulty in operation and jam, and if it is too large, it will easily crack the plastic material.

3. Select the appropriate coolant. During the drilling process, both the drill bit and the plastic material require proper cooling.

summary: In the process of drilling plastics, choosing the appropriate bit type and material can greatly improve work efficiency. At the same time, it is also necessary to pay attention to factors such as selecting the appropriate speed, bit diameter and coolant. I hope the above suggestions can help you get better results in the process of drilling plastics.