Siheyuan starts from a better life

Chapter 251, Copper pouring and painting

Author: Flying Wooden Fish

Chapter 251, Copper pouring and painting

All the technicians outside the workshop are knowledgeable people. When Jiang Yan spoke clearly, he knew that he was a high-legged person.

At that time, a middle-aged man wearing glasses said to Jiang: "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 I want to use other metals instead of copper to make bullets?"

"Wrong, does he want to find a substitute for copper?"

The material used to produce bullets is copper. Its main advantages are good ductility and a certain degree of strength. Copper is soft and has good ductility. It can expand and deform slightly when firing at high pressure and high heat. It has good air tightness and will not

The cracked copper metal has excellent lubricity, has low resistance when pulling out the shell, does not need lubrication, and has a very low chance of breaking and getting stuck. Copper is not easy to rust and is easy to store.

As we all know, our country is a copper-deficient country.

Generally speaking, the copper resources in other countries are not small, accounting for 4% of the world's total reserves. It stands to reason that self-mining and importing are enough.

However, the actual copper resource reserves in other countries may be very good based on the data, but actual mining is extremely difficult.

Although there are many copper deposits in other countries, 88% are small deposits. The biggest difference between small deposits and large deposits is the copper content, which means that with the same financial and material resources, the copper ore mined is less than other places.

Too much, very low cost performance.

Moreover, most of the copper deposits in other countries are in the mountainous southwest, northwest and other places. Mining is inherently difficult, and the quality of the copper mines is actually not high. I want to know that the average mining value of copper mines that have been proven in the world has reached

0.87, but the mining value of most copper mines in other countries is less than 0.4, and almost all the deposits above 0.4 have been developed, so in terms of actual development results, other countries are indeed considered a copper-poor country.

"The output of copper abroad is too low, which limits the production of bullets. He has 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 while, then 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 has higher processing accuracy.

If there is sand, dust, or dirt in the gun barrel, there will be a gap between the gun barrel and the gun barrel, causing air leakage; it will not be easy to recover after deformation and it will not be easy to extract the shell.”

"The more important thing is that it is not easy to store."

I also know, Mr. Jiang, that the nature of the nugget is relatively lively, and it is mainly composed of iron, so it easily reacts with other components in the environment, which means that it is difficult to store."

"Most of the bullets we produce are used for storage, so it will be very troublesome if they are opened during combat and get rusty inside."

Hearing his words, Jiang Yan nodded. It seemed that the man was paying attention.

"Then have I ever heard of copper pouring technology?"

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

That move of his completely confused Jiang Yan. He shook his head and nodded, whether he knew or not.

Jiang Yan didn't ask, so he continued: "He has heard of that technology before, but he has never understood it."

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

"Gong Jiang, do I understand the wrong technique?"

When he heard him ask, Jiang Yan really wanted to tell him, should I remove that? Jiang Yanfou knew the copper pouring technique very well.

My previous factory had been producing copper-clad steel for a while, and I could figure out the craftsmanship with my eyes closed.

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

When Jiang Yan suddenly asked his name, Master Wei Dai was stunned.

At that 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, he did do some research on copper pouring technology when he was studying abroad in SL."

When copper-clad technology becomes popular, it means adding a layer of metallic copper on the surface of steel, so that it has the strength of steel and the special characteristics 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, recording in his notebook while listening.

"Gong Jiang, he feels that the technology I mentioned is quite mature. According to my technology, it can be produced by preparing the relevant materials. It is almost not difficult to make mistakes in our factory."

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

Is what I said nonsense? Can that technology be used by many foreign factories in the past to produce copper clad laminates? Can it be refined over time?

Moreover, using that 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, he thought that Jiang Yan did not dare to vouch for it, so he said vaguely: "I haven't produced it before, so it doesn't depend on the process he calculated. There shouldn't be a big difference."

After saying that, Jiang Yan remembered again that he had been curious about the coating of bullets in other countries, and had learned about Yidong in depth. He also knew the benefits of painted steel bullet cases.

Otherwise, he said: "Actually, it's not a bad idea to make the bullet entirely from steel. I'm worried about the poor lubrication of the steel and its tendency to rust. I've thought about adding a protective layer to it."

"For example, if you apply a layer of paint on the surface of a bullet shell, I think that layer of paint not only lubricates it, but also protects the bullet from rusting easily. Isn't that killing two birds with one stone?"

"Wrong, wrong, it's coated with a protective layer. Why didn't he think of it? Why didn't he think of it." After listening to 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 is applied to the surface of the bullet casing.

When Bu Nao saw him taking out the bullet from the drawer, Jiang Yan felt his scalp numb. The bullet could be placed casually in the drawer, so what if Qiu Fu exploded?

After thinking about that, he looked at other people's workbenches. Who knows what kind of contraband those people had in their workbench.

Change, it must be corrected, even if the king of heaven comes.

You can work there, and if you don't straighten out the records there, there are strict regulations on the storage of dangerous goods. If something happens to you, and you don't know how to die, then it's your fault.

My life, or even that group of technicians, must be rectified.

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

(End of chapter)