Technology is often accumulated in the process of continuous production and research and innovation of new products.

Lao Sun Tou and his son originally thought that it would not be much of a problem to get a batch of steel, but after the actual construction started, they realized that they seemed to imagine these steel materials too simple. Not only the size of each piece of steel should meet the design requirements, but also in the thickness and structure and the casting process of the removal of impurities also have high requirements, if it is a piece of two or even ten pieces of eight pieces, the old grandson they can also personally go into battle to get it, but in the face of the total amount of hundreds of pieces...... The two of them were immediately blinded. Especially for those steel materials with a length of more than three meters, the old grandson felt that for the first time he could not play the technology that was known as a hammer to beat the world......

Knowing that these steel materials could no longer be produced by hand, the old grandson and the grandfather began to cast according to the method given by Deng Shifeng; Because there has never been such a long, special structure of steel, the initial finished product is either uneven thickness or too labor-intensive, fortunately, due to the development of glass do not need Deng Shifeng to stay there every day, a few people plus Zhao carpenter and his apprentices and Deng Shifeng's students, we work together, from how to stabilize the specifications of the mold, to the technology when pouring, one by one the problems in front of us are solved, when the first batch of steel structures in accordance with the requirements of uniform thickness, straight and beautiful appeared in front of everyone, unconsciously, This research on the casting of large steel materials not only allowed them to accumulate rich casting experience, but also accumulated valuable experience in casting larger and more special-shaped steel components in the future!

After completing the production of hundreds of large and small steel components, the work on the side of the iron plant is not over, and Lao Sun Tou and Deng Shifeng have to make a lot of careful preparations for the connection of these steel components.

In later generations, for this kind of large and medium-sized steel component connection mostly using welding and bolt connection, and rivet connection because of the complexity of the work, the workers and technology are very demanding and finally eliminated, originally Deng Shifeng was going to retreat to the second most use rivet connection, because even if Deng Shifeng can disassemble all the bolts collected from the vehicle together, can not meet the entire connection tower bolt total half; Moreover, these bolts are of different sizes and lengths, which brings great trouble to the pre-drilling of steel components.

It's just that after trying the rivet connection process, even the old grandson has been shaking his head and sighing at the cumbersome and high requirements of this technology.

The rivet connection process first of all heats the rivet to burn red, and then the person responsible for burning the rivet shouts to notify a person who specializes in riveting, and then throws the rivet over, and the rivet catches the rivet with a special pocket and quickly hands it over to the master responsible for the connection, and the master quickly plugs the eyelet into the eyelet before the rivet has not cooled down, and quickly hammers the rivet with many years of exquisite and experienced skills, the whole process is completed in less than ten seconds, and even after the connection is completed, The whole rivet is still red (using thermal expansion and contraction to lock the steel body after cooling).

Just looking at this process, we already know how high the rivet connection is for the technical requirements, the master responsible for the connection must be quick and fast, and the hammering force is uniform and accurate, otherwise the rivet head will be hammered unevenly, the connection between the steel rods is easy to loosen, and the overall steel truss is not stable. The person responsible for calcining the rivet also needs to have rich experience to accurately judge the condition of the rivet being heated, otherwise only the surface is red, and the inside is not heated in place, which will bring great trouble to the connection and even have to be reworked, if the rivet is burned too much, it will be too soft or even dissolved. Even the seemingly most unskilled person in charge of connecting rivets in the middle is actually not simple, you have to think about it, all this is working in the air, if you don't have the skills to do it or are not brave enough, in case you don't catch it...... Falling directly to the ground is just a waste of a freshly burned rivet, but in case it comes into contact with the body...... You'll get to experience what it's like to be burned......

After trying the complex surname of the riveting process, Deng Shifeng also had to give up this seemingly relatively simple and less demanding metal processing technology...... It's not that it can't be done, but these techniques are not mastered by masters who have been trained in practice for a long time, and they rely on their own technicians who don't even count half a bucket of water...... It is estimated that the assembly of this tower is either a shoddy tofu slag project, or a terrible delay in the construction period......

The way of rivet process connection is not easy, and Deng Shifeng can only continue to take the technical path of bolt connection; There is no shortage of medium carbon steel plant to make bolts, after many technical studies, the apprentice of the old grandson has explored a more round injection molding technology in order to try to form or basically form, although the first batch of products are not the strange shape of the bolt cap or the bolt column deviates greatly, but there is such a product is basically barely usable; Everything is difficult at the beginning, with a large number of failures and a small number of successes in the first batch of products, the quality of the following batches of products will gradually improve.

After accumulating enough initial bolts with small errors and no embryonic defects, regardless of the bolt cap bolt, Deng Shifeng organized several students and Lao Sun Tou to start the two diesel generators for the first time to supply power to those machine tools after a day of recuperation......

Many years later, Lao Sun Tou recalled the feeling when he saw those machine tools and equipment processing metal parts for the first time:

"The roar of the generator and the hum of the lathe made me, the person who was about to bury himself in the loess, suddenly become as excited as a child who saw a novelty toy, Xiao Deng rotated the crank on the machine tool after judging the stability of the machine tool, when I saw the parts in contact with the cutter head under the high-speed rotation and cut out the first strand of wire, I felt like a child who couldn't shout by himself, at that moment, I felt that Xiao Deng standing in front of the lathe was the possession of Master Luban......"

And the son of Lao Sun Tou, who is the **oss of the future steel giant, Sun Tiegang, recalled the feeling of working as a lathe for the first time:

"I could feel it buzzing as I approached the Iron Beast, and since I was a little scared at first, I didn't even dare to use force when I touched the rotating handle, for fear that I would hurt it because I was overexerting myself......"

Qin Er's second son, Qin Yi, recalled it like this:

"Unlike Sun Lao, I was not interested in the machines themselves, because the teacher had already told me what machines were, and machines were things that were made to work for people. What interests me the most is how to make these machines move, and how to make them more obedient than cattle to do the work according to the teacher's ideas......"

Due to the limited oil, Deng Shifeng did not give these students more opportunities to feel the power of these mechanical production, but that's it, the process of making various parts for seven hours without stop also opened everyone's eyes, especially Lao Sun Tou, he finally saw what Daxian said about mechanical production, looking at the parts that were processed exactly the same appeared in front of him, Lao Sun Tou only had one thought at the moment - to fight hard to build the tower as soon as possible, His old bones also want to taste the freshness of mechanical production!!

After all, in these seven hours, except for a little sitting for ten minutes while eating, Deng Shifeng was all standing, and the overdraft of high concentration for a long time also made him feel fatigue after stopping.

However, what makes him happy is that among the many parts he made for the first time, except for the first dozen or so column parts, there are some processing errors that can still be allowed, and the others can basically maintain a fast and good quality requirements. To be able to reach a production level with at least twenty years of technical experience, thanks to the two old technicians who already exist in his brain, it seems that the other party's experience in this area has been integrated from memory and thinking into his body and even body senses......

;