Chapter 475: Another Shocked One (Part 2)

Guo Tailai was relatively satisfied with this result.

You can't blame others for not believing in your abilities, because Guo Tailai has never shown such abilities before. This is different from how Professor Liu Laowang and others treat Guo Tailai. Mr. Liu always knows that Guo Tailai has this foundation. Professor Wang also knows that Guo Tailai has made high-precision lathes and his skills are becoming more and more exquisite, but the technical management personnel do not know.

Even if someone told him that Guo Tailai had done this before, he had made a high-precision top, but he still felt cautious, and there was nothing wrong with step-by-step improvement. In fact, this is also the thinking of most people who know about this project, and there are only a few people in the school who really support Guo Tailai.

This is also good, Guo Tailai does not need to shovel out the absolute plane under the eyes of everyone, he can find a place to do it himself.

However, the choice of this address is not an easy task. If Guo Tailai wanted to achieve a precision of 50 nanometers, he had to consider an environment with constant temperature and no vibration. It's not the same as making woven ball shades for corporate guys and making chips.

The woven ball lampshade has no blueprints, the fibers are slightly deviated, and the winding angle is slightly changed, and no one can see it. This is especially true for chips. The distance between two transistors is a little closer, and the other two are a little farther away. Who can measure it so accurately?

But the absolute plane is different. If Guo Tailai wants to make the plane not exceed 50 nanometers, and to make such a large area, some things have to be considered. With a temperature change of a few degrees, I am afraid that the height difference on the unfinished plate will exceed 50 nanometers. The influence of gravity should also be considered. This is to make a high-precision absolute plane, which is the most benchmark basis for the CNC machining center in the future. If there is a problem with the accuracy, the absolute accuracy of the manufactured machining center will be affected, and the impact is still magnified. Even if there is a problem with the datum, it would be strange if the processed workpiece can have precision.

Needless to say, the vibration, although the impact of the vibration of the thick cast iron plate will not be too great, but Guo Tailai is more pursuing the ultimate, and he is looking forward to the ultimate product. Guo Tailai feels uncomfortable even if there is a little flaw, especially this time to pursue the limit of 50 nanometer flatness, Guo Tailai wants to minimize the influencing factors.

Therefore, before returning from abroad, Guo Tailai called Zhao Xiangbei and asked him to find a suitable place with constant temperature and humidity, and the land should be firm and flat. As for the sinking, the other is to do anti-vibration treatment.

Zhao Xiangbei didn't feel that Guo Tailai was making a big fuss, he knew what Guo Tailai was going to do, he was very supportive, and helped Guo Tailai find a suitable place seriously. The operation room is located on an island in a lake in the suburbs of Beijing. There are no roads around, and the vibration of the car and subway will basically not affect it. Constant temperature treatment, clean up, just waiting for Guo Tai to come to work.

The room has been inspected by Huang Weiguo and the others, and there is no problem. The lighting is also a large-area shadowless lamp of the operating room level. The light is bright and soft, and will not be dazzling. The temperature was kept constant at twenty degrees Celsius, with an error of plus or minus one degree. The ground has been specially strengthened, and a large cast iron slab will not change if it is placed on it.

The working room is large enough to allow the specially designed forklift to be lifted smoothly from four directions with the lifting device above, without affecting the accuracy due to gravity. Moreover, the size of the cast iron slab is not exactly 3 meters by 3 meters, but 3.5 meters by 3.5 meters, and the edge part is extra in consideration of possible bumps during transportation. In short, all influencing factors have been considered to the extreme.

It took a whole day just to pull the cast iron plate over here. The two work surfaces are flat and not far apart, just waiting for Guo Tai to work.

Guo Tailai drove everyone out, locked the door of the workshop, let Huang Weiguo and the others watch, and no one should interfere with him, and then he started to work with the guys.

In order not to affect the accuracy due to his own weight standing on the large board, Guo Tailai even built a movable workbench that can be moved and fixed. The position of the center of the board.

The large cast iron slab has been roughly machined, but because the slab is too large, the precision of the machined plate is not particularly high, and the precision can reach one tenth of a millimeter. Guo Tailai started from the edge, and all the nano-robots came together to create an absolute plane bit by bit.

The precision required is so high that Guo Tailai was even afraid that his body would touch the large board so that the temperature of his body would change the size of the plane. He processed the plane with an interval of about one centimeter, just like acupuncture on a cast iron large board.

Every time a size of ten centimeters by ten centimeters is processed, Guo Tailai will process the iron chips that have been cut off above to create an illusion of scraping, and then blow them down with air, without touching the large boards with his hands at all. Even when processing to the middle of the large slab, Guo Tailai lay down directly on the movable workbench and processed it bit by bit. No contact with cast iron slabs at all.

For five full days, Guo Tailai never left the workshop except for eating and going to the toilet, and even slept in it. For the best precision, Guo Tailai can be said to be concentrating all the time. Within five days, Guo Tailai lost a total of 20 pounds. Everyone can imagine how hard he has put in for this.

However, Guo Tailai still had a gratified smile on his face when he saw the two 3.5 by 3.5-meter cast iron slabs with neat scraping patterns and a flatness of no more than 50 nanometers. Finally finished!

Guo Tailai called Professor Wang, Mr. Liu and Zhao Xiangbei respectively and asked them to come and test. For the rest of the trouble, I'm afraid it still needs to be transported to a suitable place, but that's not something Guo Tailai has to worry about anymore, his work has already been done.

Less than an hour after the phone call, Professor Wang, Mr. Liu and Zhao Xiangbei arrived one after another. There was also the technical manager with him, but Guo Tailai didn't have his phone number. It was Professor Wang who informed him to come over for inspection and acceptance.

Obviously, the technical management personnel were still a little surprised, but thinking about it, it was just two large cast iron slabs, and they could afford to lose them, so they didn't say much. But when he rushed here and saw the layout of the workshop, his expression changed. I'm afraid this workshop is not hundreds of thousands, so it can't be arranged at all. If Guo Tailai fails the test, I'm afraid the loss will be huge.

"Beautiful!" Completely different from the nervousness of the technical management personnel, Mr. Liu looked at the extremely uniform scraping lines on it, with a smile all over his face, and sincerely praised it.

"How is it possible?" When the technical management personnel checked several points with an optical flat-panel micrometer, no error was found, and the technical management personnel exclaimed on the spot.