Siheyuan starts from a good life

All the technicians in the workshop are knowledgeable people. When Jiang Yan spoke clearly, he knew that he was a master.

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

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

The operating table is relatively simple, with various warheads and cartridge cases made of other metals placed on it.

"Do you want 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, whose main advantages are good ductility and certain strength. Copper is soft in texture and has good ductility. It can expand and deform slightly when high pressure and high heat are fired. It has good air tightness and will not crack. Copper has excellent metal lubricity. It has low resistance when pulling out the shell and does not require lubrication. It is easy to break and get stuck. The probability is extremely low. Copper does not rust easily and is easy to preserve.

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

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

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

Although there are many copper deposits in our country, 88% are small deposits. The biggest difference between small deposits and large deposits is the copper content. For the same financial and material resources, the copper ore mined is much less than other places, and the price/performance ratio is extremely low.

Moreover, almost all of our country's copper deposits are in the mountainous southwest and northwest. Mining is inherently difficult, and the quality of the copper deposits is actually not high. You must know that the average mining value of the world's proven copper deposits has reached 0.87, but the mining value of most copper mines in our country is less than 0.4, and almost all the deposits above 0.4 have been developed. Therefore, in terms of actual development results, our country is indeed a copper-poor country.

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

"What about steel bullets?" Jiang Yan asked.

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

"The bigger point is that it's not easy to store."

Jiang Gong, you also know that the chemical properties of this steel are relatively active. It is mainly composed of iron elements, so it easily reacts 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 will be very troublesome if they are opened and rusted inside during combat."

Hearing his words, Jiang Yan nodded. It seemed that this man was careful.

"Then have you heard of copper pouring technology?"

When Jiang Yan asked, the technician nodded and then shook his head.

This action of his completely confused Jiang Yan. He shook his head and nodded whether he knew or didn't know.

Before Jiang Yan asked, he continued: "I have heard of this technology before, but I have never understood it."

After he said this, he saw Jiang Yan's face light up and asked Jiang Yan hopefully.

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

Hearing him ask, Jiang Yan wanted to tell him, can you remove that? Jiang Yan knew this copper pouring technique very well.

My previous factory produced copper-clad steel for a while, and I could create this process with my eyes closed.

"Excuse me, what's your last name?"

The engineer was stunned when he heard Jiang Yan suddenly ask his name.

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

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

"Gong Hu, I did do some research on copper pouring technology when I was studying abroad in SL."

To put it simply, copper coating technology is to add a layer of metallic copper to the steel, so that it has the strong properties of steel and the special properties of metallic copper. "

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

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

"Gong Jiang, 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 not difficult for our factory."

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

What you are talking about is nonsense. This technology was used by many domestic factories to produce copper clad laminates in the previous life. It has been refined over time.

Moreover, using this technology to produce copper-clad laminates, the copper coverage is uniform and the production cost is extremely low.

Although he knew that his technology was reliable, Jiang Yan did not dare to guarantee it and said vaguely: "I have never produced it before. This is all the process I calculated. There shouldn't be a big difference."

After saying this, Jiang Yan remembered again that he had been curious about the paint on bullets in our country and had learned more about it. Also know the benefits of painted steel cartridge cases.

So he said: "Actually, it's not a bad idea to make the bullet entirely from steel. Are you worried that the steel is not lubricated enough and is prone to rust? Have you ever thought about adding a protective layer to it?"

"For example, if you apply a layer of paint on the surface of a bullet shell, you can see that this layer of paint not only lubricates it, but also protects the bullet from rusting easily. Isn't this a multi-purpose thing?"

"Yes, yes, put on 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 looked like they were made of steel from a drawer on the workbench, and then carefully put the green paint on Apply to bullet casings.

But when he saw him taking out the bullet from the drawer, Jiang Yan felt his scalp numb. The bullet could be placed casually in the drawer. What if it exploded.

Thinking of this, he looked at other people's workbenches. Who knows what kind of contraband these people have in their workbench.

Changes must be made, even if the King of Heaven comes.

I have to work here. If I don't sort out the records here and the storage regulations for dangerous goods, if something happens, I don't know how I will die. For my own life, I will do it. For the sake of this group of technicians, it must be rectified.

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