Siheyuan starts from a better life

Chapter 251, Copper and Paint
All the technicians in the workshop are knowledgeable people, and when they heard what Jiang Yan said, they knew that they were masters.

At this time, a middle-aged man with glasses said to Jiang Yan: "Jiang Gong, please give me some guidance."

Hearing his words, Jiang Yan nodded, and followed him to his console.

Its operating table is relatively simple, with various bullets and shells made of other metals placed on it.

"Are you trying to use other metals instead of copper to make bullets?"

"Yes, I just want to find a substitute for copper."

The material used to produce bullets is copper, which has the advantages of good ductility and certain strength.Copper is soft and has good ductility. It can have a little expansion and deformation when firing high pressure and high heat. It has good air tightness and will not crack. Copper metal has excellent lubricity, and the resistance is small when pulling out the shell. The odds are extremely low.Copper does not rust easily and is easy to preserve.

But everyone knows that my country is a copper-deficient country.

But generally speaking, my country's copper ore resources are not small, accounting for 4% of the world's total reserves. It stands to reason that self-exploitation and imports are enough.

But in fact, my country's copper reserves may look good in terms of data, but actual mining is extremely difficult.

Although there are many copper deposits in my country, 88% of them are small deposits.The biggest difference between small-scale mines and large-scale mines is the copper content, which means that with the same financial and material resources, the copper ore mined is much less than other places, and the cost performance is extremely low.

Moreover, almost all of my country's copper deposits are located in the mountainous southwest and northwest. The mining difficulty is relatively high, and the quality of the copper mines is actually not high. It must be known that the average mining value of the copper mines that have been proven in the world has reached 0.87, but the mining value of most copper mines in my country is lower than 0.4, and the deposits above 0.4 are almost all developed, so from the actual development effect, my country is indeed a copper-poor country.

"The production of domestic copper is too low, which limits the production of bullets. I have tried many metals, and the bullets made of them are generally not as good as those made of brass."

"How about the steel bullet?" Jiang Yan asked.

Hearing Jiang Yan's question, the man lowered his head and thought for a while, and said, "Although the shooting accuracy of bullets made of steel is not much different from that of bullets made of copper, you also know that steel is harder, and the processing accuracy is not high enough and the barrel In the case of sand, dust, and dirt, there will be a gap with the barrel, causing air leakage; it is not easy to recover and extract the shell after deformation.”

"More importantly, it's not easy to store."

Mr. Jiang, you also know that the chemical properties of this steel are relatively active. It is mainly composed of iron, so it is easy to react with other components in the environment, which means that it is not easy to store. "

"Most of the bullets we produce are used for storage. It would be very troublesome if the bullets were opened and rusted during battle."

Hearing what he said, Jiang Yan nodded, it seems that this person is paying attention.

"Then have you heard of copper pour technology?"

Hearing Jiang Yan ask, the technician nodded and then shook his head.

This action of his completely confused Jiang Yan, shaking his head and nodding whether he knew or not.

Before Jiang Yan asked, he continued, "I've heard of this technology before, but I didn't understand it."

After he finished speaking, he looked at Jiang Yan's face brightened, and asked Jiang Yan with hope.

"Jiang Gong, do you know about this technique?"

Hearing him ask, Jiang Yan really wanted to tell him, you remove that? Jiang Yan understands this copper cladding technology too well.

The factory before me produced copper-clad steel for a while, and I could figure out this craft with my eyes closed.

"Excuse me, what is your last name?"

Hearing Jiang Yan suddenly asked his name, the engineer froze.

At this time, Guo Jianjun who was following Jiang Yan said, "His name is Hu Dahai."

Hearing Guo Jianjun's words, Jiang Yan glanced at him approvingly.

"Mr. Hu, when I was studying in SL, I did have some research on copper cladding technology."

To put it bluntly, the copper-clad technology is to add a layer of metal copper on the steel, so that it has the strong performance of steel and the special performance of metal copper. "

Then Jiang Yan told about the method of producing copper clad laminates in his factory in his previous life.

Hu Dahai listened most attentively, recording in his notebook while listening.

"Jiang Gong, I feel that the technology you mentioned is quite mature. According to your technology, it can be produced as long as the relevant materials are prepared. It is almost no difficulty for our factory."

Hearing this, Jiang Yan rolled Hu Dahai's eyes in his heart.

What you said is nonsense. This technology was used by many domestic factories to produce copper clad laminates in the previous life, and it has been honed and honed.

Moreover, copper clad laminates are produced with this technology, the copper coverage is uniform, and the production cost is extremely low.

Although he knew that his technology was reliable, Jiang Yan didn't dare to guarantee it, but said vaguely: "I haven't produced it before. This is the process I calculated, and there shouldn't be a big difference."

After saying this, Jiang Yan remembered that he was very curious about the varnish on the bullets in our country, and he had a deep understanding of it.Also know the benefits of painted steel shell casings.

So he said, "Actually, it's okay for the bullet to be made entirely of steel. You're not worried that the steel is not lubricated enough and it's easy to rust. Have you thought about adding a protective layer to it?"

"For example, a layer of paint is applied to the surface of the bullet casing. You can see that this layer of paint not only lubricates it, but also protects the bullet from rusting well. Isn't this killing multiple birds with one stone?"

"Yes, yes, apply a protective layer, why didn't I think of it, why didn't I think of it." After hearing Jiang Yan's words, Hu Dahai muttered in his mouth, but his eyes became brighter and brighter.

He ran to the tool cabinet and took out a bucket of green paint, returned to his workbench, and then took out a few bullets that were made of steel from a drawer of the workbench, and carefully put the green paint Apply to bullet casings.

But when he saw him take out the bullets from the drawer, Jiang Yan felt his scalp tingle, the bullets could be placed in the drawer casually, what if it exploded.

Thinking of this, he looked at other people's workbenches again, who knows what contraband is in this group of people's workbenches.

Reform must be rectified, even if the Heavenly King and Lao Tzu come.

I want to work here, if I don't rectify the records here, and the regulations on the storage of dangerous goods, if something happens to me, I don't know how to die, for my own life, it is also For this group of technicians, rectification is necessary.

Jiang Yan, who was thinking about the problem, didn't know. Seeing that Jiang Yan solved the problem that Hu Dahai had been troubled for a long time, everyone looked at Jiang Yan with enthusiasm.

(End of this chapter)