Chapter 43 Thermocouple, done!
Another busy day has passed. On Friday night, Gao Zhendong sat at home, sorting out his recent affairs and current progress. There have been more and more things recently, and he had to sort them out.
There is a piece of paper in front of Gao Zhendong. He is writing and drawing on it, and the lines of writing are vividly written on the paper.
Thermocouple: The electrode trial production is basically completed, comparative tests are in progress, the protective tube material is waiting for the 3Z-591 progress, and the welding and assembly of the secondary meter trial product is completed. [Progress is normal] [Priority - High]
ESR: Learning to digest. [Progress is normal] [Priority-low]
3Z-591: Personal batching and trial production have been completed, and heat treatment has been completed. It is being handed over to Fang Yinghong and Liu Rongguo for performance verification tests. Its new research plan has been submitted to Lao Chen for third-level review. [Progress is normal] [Priority - High]
Transistor Computer System: Transcription of instructional materials [not yet started], configuration of input and output devices [not yet started], basic operating environment preparation [not yet started]. [Priority - High]
Special materials: The trial production of 3Z-591 has been completed, and the heat treatment has been completed. Performance verification needs to be done in person. [Progress is normal] [Priority - Medium]
The special material Gao Zhendong wrote here is the alloy material he pulled out from the GJB standard he drew earlier.
I looked carefully and went through it in my head. There is nothing wrong with the thermocouple. Just go as planned. Moreover, there are enough manpower, so Gao Zhendong basically does not need to worry about the details.
The trial production of 3Z-591 high-temperature alloy is okay except for confidentiality issues. Regarding confidentiality, Gao Zhendong believes that Sister Fang and Xiao Liu also felt something from the trial production process of this material. With Gao Zhendong’s explanation, the two of them At work, you basically just do the work, don’t ask questions, and don’t worry about confidentiality.
The special materials matter is relatively smooth, and there is no need to rush. Even if there is a problem with the finished product of this trial production, as long as either of the two projects of thermocouple and 3Z-591 has not been completed, it will be OK. Feel free to do it again.
ESR, less than half of it has been digested. Gao Zhendong is not in a hurry about this matter. It will be possible to promote it only after a long period of time after the dust of the thermocouple and 3Z-591 projects has settled and the positive impact has appeared. , he has plenty of time. The technology time span in "Electro Slag Remelting (ESR) Technology Principles and Latest Progress" is large enough, so earlier or later will not have a big impact on technological advancement.
Transistor computer system, this is the most urgent. Copying can start at any time, but the input and output devices must be touched, otherwise there will be no way to prepare the basic operating environment for the next step.
Gao Zhendong decided to go to consignment stores, supply and marketing cooperatives, hardware stores, etc. on Sunday. He had some formed ideas in mind, but he wanted to see if he could find what he needed. If he couldn't find it, he would think again. Other ways.
After arranging his next personal work plan, Gao Zhendong took out paper, pens, and drawing tools and began to copy CPU instruction materials.
The first thing he copied was the architecture and instruction set. After completing the copying work of these two parts, he had the ability to compile a basic working environment. After all, the architecture and instruction set of 8086/8088 in his previous life were not his. Although I am familiar with it, I have never learned about 8008, so there is a certain difference.
In this way, he can copy books for a while, program for a while, and change his mind while working. Everyone knows that doing the same thing for a long time is not a good enjoyment.
He can do this work first without waiting for the configuration of input and output devices and program memory, because he can write it on paper first.
When I think about putting the explanatory materials and original programming paper records I copied in a glass display case in a museum related to the history of the development of domestic computer technology in the future, there is a line of large characters on the explanatory plate: "The first domestic computer "All-transistor computer design data and original program manuscript" - Compiled by: Gao Zhendong. Coupled with the commentator and the cute children who came to visit, Gao Zhendong was so beautiful that his nose almost burst with tears. . Hi! After thinking too much, Gao Zhendong collected his thoughts and continued working.
At four o'clock on Saturday afternoon, Gao Zhendong and his colleagues were in jubilation in the vacuum induction furnace laboratory.
"Successful! Successful!"
Deputy Section Chief Wu is also here. He is responsible for the coordination and cooperation of the technical department. He is usually not in the laboratory, but he is about to take a step towards thermocouple research. In the most critical step, Gao Zhendong specially invited him over.
What Gao Zhendong is holding are two test records.
One part is a K-type (nickel-chromium-nickel-silicon) thermocouple. The nickel-chromium ratio of the positive electrode material is 90:10, the nickel-silicon ratio of the negative electrode material is 97:3, and the electrode insulating material is magnesium oxide.
One part is an N-type (nickel-chromium-silicon-nickel-silicon) thermocouple. The nickel-chromium-silicon ratio of the positive electrode material is 84.4:14.2:1.4, and the nickel-silicon-magnesium ratio of the negative electrode material is 95.5:4.4:0.1 , the electrode insulating material is also magnesium oxide.
After cold end temperature compensation, the output thermoelectromotive force is around 40mV at 1000°C. Since there is no ultra-low temperature equipment, the current test working range is -20°C~1300°C without a protective tube.
According to verification experiments and comparative test records, both thermocouples have good linearity, large thermoelectromotive force, high sensitivity, good stability and uniformity, strong oxidation resistance, and low price. Advantages: Can be used in oxidizing inert atmosphere.
At the same time, the electrode repeatability verification showed that the manufacturing process of the electrode was very successful. Both K-type and N-type used the same material ratio. Three sets were continuously trial-produced with the same process, and their respective repeatability was very good.
The biggest difference is that from the temperature-electromotive force curve, the N-type is smoother than the K-type.
At this point, it can be said with certainty that the thermocouple is done! Even if there is no 3Z-591 high-temperature alloy, existing materials can still show its talents in many applications. After all, not all applications that require high temperature measurement must be as high as 1300°C. For an environment of 1300°C, special alloys can be used. The material protection tube, and 3Z-591, is the last shortcoming to make up for it, and it is a thermocouple that can be used in an environment of 1300°C.
Gao Zhendong took the test record and explained each record in it to Deputy Section Chief Wu. Deputy Section Chief Wu smiled happily. As the deputy section chief of the Technical Section, he understood the value of this thing very well. Not only could it be used in our factory It has made great achievements in production, and can also provide a large amount of support to brother factories and mines.
When everyone's emotions were almost vented, Gao Zhendong raised his hand and pressed it down.
The members of the scientific research team knew that he was going to arrange work, and they all became quiet.
Gao Zhendong first made a summary and set a tone: "I know everyone is very happy, and I am also very happy. At this point, it can be said that this thing is done. We will continue to work hard and do the remaining work well. , we can report our work to the organization!"
Everyone responded: "Okay!"
(End of this chapter) br>