Does heat from drilling cause damage to drill bits?

In summary, heating up a drill bit before drilling can result in less coefficient of friction between the drill bit and the material being drilled. However, it may also result in quicker wear and damage to the drill bit due to high temperatures. It is generally best to avoid high temperatures while drilling, and to use lubrication and sharp drill bits to minimize friction and heat transfer. In particular, when drilling harder metals like stainless steel, it is important to use sharp drill bits and lubrication to prevent slippage and damage to the cutting edges.
  • #1
ahmed11
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if i heat up my drill bit before drilling, will that result in less coefficient of friction between the drill bit and wood material or metal material?
and if so yes will it give me more time before the drill bit wears out because of high temperature as it will be harder to reach high temperature that will damage the bit or will it just wear out really quickly?
 
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  • #2
This is really not my field of expertise, so I hope that someone else will chime in, but I would think that heating up the drill bit will hasten the wear.

Also, by experience, drill bits heat up quite quickly when you use them, so pre-heating them would not change much.
 
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  • #3
The short answer to your question is that heat from and while drilling is bad. For a longer answer to your question see the below.

High temperatures are to be avoided when drilling because the drill point fluke sharp cutting edges are where the most friction and heating occurs and on hardened metal alloy drills these thin edges can easily be heated to a temperature at which they begin to lose hardness and become worn and damaged.

With any cutting tool, it is necessary to either cut slowly enough to allow heat transfer away from the cutting edges to the base and cut materials and, in the case of drills, up the shaft to cool the cutting edges. For wood this also means reducing drilling speed to heat charring of the wood. For metals, it is best to also use a lubricant.to minimize the cutting edge friction and carry heat away from the drill tip cutting edges.

When drilling plastics, and low melting temperature metals like aluminum, excessive drill heating must be avoided because excess heat will result in melting of the drilled material, which then hardens in the drill"s spirals so that cut material cannot be removed from the hole.

When cutting nickel alloy metals like stainless steels, particularly 316 SST, using only very sharp drills and lubrication is particularly important because higher drill loads are required to insure that the drill tip edges cut without slipping on the SST material surface because slippage will result in surface hardening of the material which then requires added pressure to resume material cutting which increases friction heating that then results in wear and damage to the drills cutting edges. With hardened metal alloy drills the friction from trying to restart the drilling can damage the cutting edges enough to prevent resuming cutting of the material with that drill.
 
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  • #4
JBA said:
The short answer to your question is that heat from and while drilling is bad. For a longer answer to your question see the below.

High temperatures are to be avoided when drilling because the drill point fluke sharp cutting edges are where the most friction and heating occurs and on hardened metal alloy drills these thin edges can easily be heated to a temperature at which they begin to lose hardness and become worn and damaged.

With any cutting tool, it is necessary to either cut slowly enough to allow heat transfer away from the cutting edges to the base and cut materials and, in the case of drills, up the shaft to cool the cutting edges. For wood this also means reducing drilling speed to heat charring of the wood. For metals, it is best to also use a lubricant.to minimize the cutting edge friction and carry heat away from the drill tip cutting edges.

When drilling plastics, and low melting temperature metals like aluminum, excessive drill heating must be avoided because excess heat will result in melting of the drilled material, which then hardens in the drill"s spirals so that cut material cannot be removed from the hole.

When cutting nickel alloy metals like stainless steels, particularly 316 SST, using only very sharp drills and lubrication is particularly important because higher drill loads are required to insure that the drill tip edges cut without slipping on the SST material surface because slippage will result in surface hardening of the material which then requires added pressure to resume material cutting which increases friction heating that then results in wear and damage to the drills cutting edges. With hardened metal alloy drills the friction from trying to restart the drilling can damage the cutting edges enough to prevent resuming cutting of the material with that drill.
thank you for the thorough info
 

1. What is high temperature and how does it affect friction?

High temperature refers to a state of matter where the temperature is significantly above the surrounding environment. High temperature can increase the movement and energy of particles, causing them to collide more frequently and with greater force, leading to an increase in friction.

2. Can high temperature reduce friction?

In some cases, high temperature can reduce friction. When two surfaces are heated, they can expand and become smoother, resulting in less friction between them. However, this is not always the case as high temperature can also lead to increased wear and tear of materials, resulting in higher friction.

3. How does the type of material affect friction at high temperatures?

The type of material can greatly affect the amount of friction at high temperatures. Some materials, such as metals, can withstand high temperatures and maintain their strength and smoothness, resulting in lower friction. Other materials, such as plastics, can melt or deform at high temperatures, leading to an increase in friction.

4. What are some examples of high temperature and friction in everyday life?

In everyday life, high temperature and friction can be seen in various scenarios such as rubbing your hands together to create heat, using a stove to cook food, or the friction between tires and the road when driving a car. High temperature and friction are also important in industrial processes such as welding or grinding.

5. How do scientists study high temperature and friction?

Scientists use various methods to study high temperature and friction, including conducting experiments in controlled environments, using computer simulations, and analyzing real-world data. They also study the properties of different materials and their behavior at high temperatures to better understand and predict friction under these conditions.

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