Why doesn t drill bits made of diamonds evaporate at high temperatures?

This student, your question is very good, but your observation is not enough.

Diamond (commonly known as diamond) has a burning temperature of about 900 degrees Celsius and a melting point of more than 3,000 degrees Celsius.

When drilling underground, as long as the diamond bit does not reach 900 degrees Celsius, it will not burn.

But your question ignores the artificial cooling during drilling, that is, the diamond drill bit is always hit by water during drilling, and we all know that the specific heat of water is very large, which is an excellent coolant. When drilling, the temperature of the drill bit can be basically controlled between 300 degrees Celsius and 500 degrees Celsius, so there is no need to worry about the drill bit burning out...

At present, diamonds are not used for drill bits, and most drill bits use synthetic diamond or cemented carbide. The reason why it did not melt was that the temperature was not yet reached (the ground temperature gradient was 3 degrees 100m).The deepest well in the world is about 10,000 meters, and it was drilled by the former Soviet Union for 13 years.

Second, there is drilling fluid cooling and cooling.

Because diamonds have a high melting point, a high melting point and strong stability.

Diamonds burn at a temperature of around 900 degrees Celsius, and at the same time, the melting point is very high, which can withstand high temperatures, and it is difficult to reach 900 degrees Celsius under normal circumstances, so it will not burn

High melting point, strong stability, evaporation, will not ......?

Have you seen it? Fake, let me make a joke, isn't diamond c......C+O2==(ignition) CO2 (pure funny, don't point me) is actually possible to lower the melting point??

The temperature reaches the ignition point, and of course it burns in contact with oxygen, and the question is what does this have to do with evaporation?

Because diamonds have a high melting point.

Diamond turns into carbon at high temperatures.

Summary. In fact, diamonds are afraid of high temperatures, we all know what diamonds are made of, diamonds are composed of carbon elements, carbon is a very easy to burn substance, so diamonds will be directly sublimated and burned at high temperatures.

In fact, diamonds are afraid of high temperatures, we all know what diamonds are composed of burning silver, and diamonds are composed of carbon, which is a very easy to burn substance, so diamonds will directly sublimate and burn at high temperatures.

Although diamonds are considered the hardest thing in the world, it does not mean that diamonds are indestructible and fearless of anything. Brilliant diamonds have a color that is difficult to compare with other gemstones, in professional terms to cover the branch is the fire of diamonds, some people think that diamonds are very hard, but in fact, diamonds are afraid of high temperatures, we all know what diamonds are made of, diamonds are composed of carbon elements, carbon is a very easy to burn substance, so diamonds will be directly sublimated and burned at high temperatures. Because diamonds are formed by crystallization in an environment of high temperature and pressure.

Therefore, the temperature exposed to in daily life will not cause harm to diamond jewelry. But diamonds burn when heated to 800 in air and 720 in oxygen. Formation of stool carbon dioxide Hermin gas.

Therefore, diamonds can also burn at high temperatures, and diamonds are the most expensive jewelry in the world, so it is best not to verify this phenomenon in person.

The four things that diamonds are most afraid of are said to be the hardest substances in the world, but diamonds also have weaknesses: one diamond is afraid of oil: diamonds are lipophilic, so oil stains will be very easy to stain on the diamond, so that your diamond will lose its luster.

It is recommended to take off the diamond ring when cooking, and wash it with a brush and hand sanitizer if it is stained with oil. Second, the diamond is afraid of the impact of the royal pair: although the diamond has high hardness and is not afraid of daily wear and tear, but when there is a large enough external impact, the diamond will be broken, and no one wants their diamond ring to be missing a corner, so it is recommended to take it off when exercising vigorously.

Three diamonds are afraid of high temperatures: real gold is not afraid of fire, but diamonds can not be smelted by fire, when the diamond encounters a high temperature of 800 degrees, it will change color and turn into carbon dioxide hand gas, so you must not let the trace of your diamond to get close to the high temperature.

Summary. Diamonds are afraid of high temperatures. Diamonds are made up of carbon, which is a very flammable substance that starts to burn at 800 degrees Celsius.

Therefore, diamonds will sublimate and burn directly at high temperatures. In order not to damage the diamond, try to avoid touching barbecue grills, stoves and other items during wearing, so as to avoid the diamond being exposed to high temperature and open flames, damaging its surface and affecting the original color. I hope mine can help you, if you are satisfied with my service, please give a thumbs up, I wish you all the best!

I hope mine is helpful to you and I wish you a great life (

Diamonds are afraid of high temperatures. Diamonds are made up of carbon, which is a very flammable substance that starts to burn at 800 degrees Celsius. Therefore, diamonds will sublimate and burn directly at high temperatures.

In order to be careful not to damage the diamond, try to avoid touching the barbecue grill, stove and other items when wearing it, so as not to contact the diamond with high temperature, bright sparrow swimming in the fire, damage its surface, and affect the original color. I hope mine can help you, if you are satisfied with my service, please give a thumbs up, I wish you all the best! I hope mine is helpful to you and I wish you a great life (

Fellow, I really didn't understand, I can be more specific.

Diamonds are made up of carbon, a substance that burns easily at 800 degrees Celsius. Therefore, diamonds will sublimate and burn directly at high temperatures. In order not to damage the diamond, try to avoid touching barbecue grills, stoves and other objects when wearing, so as not to expose the diamond to high temperature and open flame, damage its surface, and affect the original color.

The rough stone of a traditional diamond is a diamond, which takes billions of years, and deep in the earth, it also requires extreme pressure and extremely high temperatures to produce the right conditions for carbon to crystallize.

According to foreign reports, researchers from the Australian National University and the Royal University of Melbourne recently created a diamond in just a few minutes under the temperature of the chamber macro. The researchers are using a completely new technology, using a diamond anvil device at ordinary room temperature, to apply an unexpected high pressure to the carbon atoms, equivalent to the pressure of 640 African elephants, to put the carbon atoms in place, and after a few minutes, hexagonal meteorite diamonds and conventional diamonds are formed. Hexagonal meteorite diamonds, also known as blue stellite diamonds, are 58% harder than ordinary diamonds.

According to the researchers, the production of Blue Stale will be mainly used to cut ultra-solid materials in the mine. It is their long-term goal to create more of these rare but super-useful diamonds. (Wang Xinqiang).