doomsday survival

Chapter 289 Industrial Progress
With these landmines as protection, Shi Jian and Feng Kuang finally felt at ease. Even though the rest of the landmines couldn’t jump up like the test ones, the explosion would definitely not be a problem, and it would also break the zombie’s legs , affecting their actions.

Fengkuang naturally started his own chemical industry, while Shi Jian handed over all ironmaking matters to Wang Gang, and he himself took Meizi, Zhang Jian, and Yi Hengge to research machine tools.

These CNC machine tools have been placed for too long, and the CNC programs inside have been lost, so they cannot be operated at all.However, whether it is a CNC machine tool or a manual machine tool, for him, the most important thing is the knives. These knives are absolutely impossible for Shi Jian to manufacture now, so Shi Jian has a way to deal with it.

This method is very simple, that is to convert the CNC machine tool into a manual machine tool. If it is not possible, you can even consider redesigning a complete set of machine tools and transferring the tools there.

Compared with manual lathes, the structure of CNC machine tools is much more complicated, but its basic principle is still the same, except that it relies on a single-chip microcomputer to operate the lathe. What Shi Jian has to do now is to remove the entire CNC part, and then use castings to Replace some of these parts, and then achieve the purpose of pure manual operation.

The major of mechanical design can be said to be all-encompassing, not just drawing a drawing, engineering mechanics, metal materials and heat treatment, electrical engineering, and machine tool processing are all part of the content of their studies.

There used to be a saying: everything goes well equals everything loose.But Shi Jian is not among them. Although he did not intend to work after graduation when he was in school, he only wanted to be an otaku charterer at home, but he has a good grasp of these knowledge Among them, this panacea-like professional actually made him feel like a fish in water.

With the help of the three of Meizi, Shi Jian dismantled a machine tool to pieces, and then began to reassemble it.After dismantling the CNC system, Shi Jian drew the missing parts of the lathe based on his memory a few years ago, and then asked Yi Hengge to take them to Zhang Weiqiang, who was responsible for making sand molds and then casting.

Now Wang Gang has controlled the temperature very well. He successfully smelted pearlitic cast iron in two consecutive furnaces, and quickly cast the castings Shi Jian needed.

After receiving the castings, Shi Jian began to refit the lathe. After several days of busy work, he finally finished refitting the first lathe.

Looking at the lathe he modified himself, Shi Jian nodded with satisfaction and said, "Does it look good? It should be usable."

"Mr. Shi, didn't you say that castings are not as good as steel, so can we use so many castings?" Meizi asked quietly.

Shi Jian said with a smile: "So our first batch of processed parts is to replace those castings with hidden dangers, and use steel to process completely qualified parts, and there is no need to replace parts such as handles."

Only then did Meizi understand, and said, "Then see what kind of steel you need, I'll look for it."

Shi Jian patted him on the shoulder and said, "Let me go, you don't know those things either."

Compared with iron, steel rusts much slower, and it has not corroded to be unusable like iron, especially here, many of the steels that need to be processed are large-sized pieces, as long as the outer layer of rust is removed, then the It can be used, at least it is not a problem to process the required parts.

The precision of the cast parts is definitely not up to the standard of high-precision machined parts. Shi Jian spent a lot of trouble before finishing these parts.

After each part is processed, Shi Jian immediately replaces it. With the increasing number of finished parts, the precision of the machine tool is getting higher and higher.And Shi Jian continued to replace parts with higher precision, and finally reached the level of Shi Jian's satisfaction.

"Okay, it's finally succeeded. This is the first lathe we own. With it, we can let go of our hands and feet." Shi Jian said to the three of Meizi with relief.

"That," Yi Hengge asked with a smile, "Boss Shi, can we learn this?"

Shi Jian smiled and said, "Of course I have to learn, otherwise why would I have called the three of you here?"

The three looked at each other, and there was a hint of excitement in each other's eyes. They looked at Shi Jian eagerly, wishing they could learn this right away.

Meizi was most familiar with Shi Jian, so she asked, "Boss Shi, when can we start learning?"

Shi Jian said with a smile: "I'm in a hurry now? Wait a minute, how can I modify a few more machines, and the machine tools are not only lathes, turning, milling, planing and grinding pliers, the five types of work can be used for machining It can be used, except for the fitter, all need machine tools to operate, so we have to modify several other machine tools to do it.”

"There are so many, when will I learn it?" Yi Hengge opened his mouth wide and said in surprise.

"This thing is fast and slow, it mainly depends on your understanding. If you learn quickly, you should be able to operate one of them by yourself in a month, but if you learn slowly, you may not be able to learn it in a lifetime. Yes." Shi Jian said with a smile.

Yi Hengge scratched his head, and said with a smile: "I don't think I'm that stupid, so there should be no problem. But..." He didn't continue, but looked at Meizi and Zhang Jian with malicious intent.

Meizi walked up to Yi Hengge's side, patted him on the shoulder, then put her arms around his neck and asked, "Xiao Yizi, what kind of eyes do you have?"

Zhang Jian also clenched his fists and said "crack" and asked, "Yeah, what kind of eyes are you looking at, Heng Ge? If you have anything to say, we are all brothers, so we won't hurt our friendship. "

Yi Hengge felt a chill running down his back to the top of his head, he quickly put on a smiley face, shook his hands and said, "No, no, it doesn't mean anything, I mean it doesn't matter if my comprehension is good or not. understood."

"You're a good kid." Meizi let go of Yi Hengge and said with a smile.

Shi Jian looked at the three people with a smile, and didn't stop their laughter and squabbles. After they calmed down, he clapped his hands and said, "Okay, let's continue now, and then modify a machine tool to come out." .”

With the help of the lathe, the other three machine tools were quickly refitted, and the three machines took the same time as this lathe.

There were also some problems, that is, the motors of the two machine tools burned out after running for a while.But this is not a big problem. There are four machining factories in total, and there are plenty of lathes in them. Shi Jian removed two motors and replaced them, and it was solved.

While Shi Jian was refitting the machine tool, Fengkuang was also working on resuming the production of the chemical plant.The purpose of Fengkuang is to be able to produce the basic chemical products of three acids and two alkalis. The three acids are sulfuric acid, hydrochloric acid and nitric acid, and the two alkalis are soda ash and caustic soda.

If it was in the old days, these three acids and two bases could be easily prepared, but now there is a shortage of too many raw materials.

For example, the production of hydrochloric acid mainly uses the salt electrolysis method, and the production of soda ash using the Hou's soda method also requires common salt, but common salt is currently scarce.

Although Shi Jian had taken people to bring back the salt from the salt factory long ago, he would never dare to use the salt without finding a new source of salt.

In addition, the pyrite needed for sulfuric acid is not easy to find raw materials, and it is almost impossible to produce without using the inventory.

Hearing Feng Kuang mention these difficulties, Shi Jian was also helpless, the current situation is indeed not optimistic.Seeing that with the production of explosives, the raw materials in stock are getting less and less, Shi Jian is also as anxious as Feng Kuang.

"What raw materials can we solve now?" Shi Jian asked with a frown.

Feng Kuang sighed and said: "The only thing that can be solved now is ammonia gas. The equipment in the chemical plant has high requirements for corrosion resistance, so basically all of them can be used. It is completely possible to use the Haber method to extract ammonia gas at high temperature and high pressure." accomplish."

"It's that extremely bad-smelling gas? What's the use of that thing?" Shi Jian asked after thinking for a while, and that's all he knew about ammonia gas.

Feng Kuang glared at him, and said, "I don't know much about it, ammonia gas is needed to make soda ash and nitric acid, and nitrogen fertilizer can also be produced."

It was only then that Shi Jian realized that ammonia gas had such great uses, so he said, "Then what are you talking about, let's make ammonia gas first, and also make some fertilizer by the way, just for next spring plowing."

Feng Kuang sighed and said: "Chemical fertilizer needs salt, and it can be made together with alkali, but there is no problem in making nitric acid, and more explosives can be made."

"That's fine," Shi Jian nodded, comforting Feng Kuang and said, "Old Feng, no matter when, all technologies are first applied to the military, so first prepare the combat supplies, it's a big deal, and then I will bring Let someone go to the beach to dry the salt for you."

Feng Kuang laughed after hearing this, and said: "That's not necessary, there will always be a way, how can you use Mr. Shi to come out of the mountain?" After making Shi Jian's joke, Feng Kuang was silent for a while, and then said in a deep voice: "The reason why I am anxious is that I feel that I am getting old and want to pass on these things as soon as possible."

When Shi Jian heard Feng Kuang mentioning this again, he felt speechless for a while, patted Feng Kuang on the shoulder, and said, "Old Feng, you think too much."

"I hope so," Feng Kuang said with a sigh, "I've been debugging those devices these days, I hope they can keep learning."

The time was spent in Fengkuang debugging the chemical plant equipment, and Shi Jian constantly refitting the machine tools. The day when the four major machine tools of turning, milling, planing and grinding were refitted happened to be the last day of 2074 in the Gregorian calendar. Unknowingly Another new year has come.

　Double ask for a monthly ticket!

　　
　
(End of this chapter)