A pencil lets you master all the knowledge of graphite
Everyone knows. The pencil is used to write characters, but it has another trick - it can cure rust locks.
The rusted lock cannot be opened. Adding a little pencil powder in the hole of the key can often open the rust lock.
How can a pencil lead have this trick? Originally, the pencil lead contained graphite, and graphite had lubricity. Touching the powder of the pencil lead by hand will have a creamy feel. Therefore, the pencil core can lubricate the rust lock.
Graphite has a high melting point of more than 3,000 degrees. As a lubricant, it is particularly suitable for machines operating at high temperatures. At high temperatures, the general engine oil will decompose, however, graphite is "safe and safe" and continues to play a role in lubrication.
There is a bearing, which is added with graphite powder during molding. This kind of bearing can work for a long time without having to lubricate and lubricate. It has its own graphite in the lubrication. What a clever bearing this is.
On the doorway of the helicopter cabin, a new type of high-precision pure graphite bearing has been used. This bearing is both resistant to low temperatures and high temperatures, and it is particularly surprising that it maintains good lubricity under vacuum conditions.
For more information, please pay attention to China Pencil Trading Network:
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