If you want to talk about what is the most difficult thing to make, I wonder what your friends will think of? Is it an atomic bomb or something else? The atomic bomb can be said to be the most difficult thing to make in the world. Only 10 countries in the world can make it. But today I want to talk about this thing. It can be said to be much more difficult to make than the atomic bomb. It is a ballpoint pen. head.
Only three countries in the world can produce it, namely Japan, Switzerland and China. Even some developed countries such as the United States cannot produce it. The seemingly simple ballpoint pen tip (the ball on the tip of the ballpoint pen or the Ballpoint pen ball), what is the difficulty in manufacturing it?
The first is the problem of process. China is overcoming the problem of ballpoint pens, which are all imported from Japan and Switzerland. Because the patented technologies are all locked up by Japan and Switzerland, China Taiyuan Group spent a lot of money to finally bypass Japan and Switzerland. Switzerland invented its own patent. The second issue is the material. Ballpoint pen beads cannot be stuffed into ordinary materials. It needs to be very lubricated, wear-resistant, and hard. It requires a suitable proportion of trace elements to be mixed in the material. .
The formula of ballpoint pen ball material is very delicate, and it must achieve a perfect fit (the processing error cannot exceed 0.003 mm), even one thousandth less than that. China has been testing it for 5 years. I just debugged it. Secondly, the diameter of the ballpoint pen ball is very small. The machine tool that processes the ballpoint pen must be very precise. The pen tip must wrap the ballpoint. This groove is extremely difficult to grasp. If it is too large, it will leak easily, and if it is too small, it will not leak water. It must be round enough and the water discharged evenly enough, so the difficulty can be imagined.
The last thing is the cost issue. China produces more than 40 billion ballpoint pens every year, but the ballpoint pen balls cannot be produced and need to be imported. This is something that most people don’t know. China also imported its own ballpoint pens before 2016. The machine tool was produced by oneself, but what if Japan and Switzerland stopped selling it, what would Chinese students do, so they decided to develop and develop ballpoint pen beads~