Siheyuan starts from a better life

Chapter 262, Bullet Production

After Jiang Yan and the others showed their credentials at the barbed wire gate, they stepped into the range of these workshops that produced guns and ammunition.

Through Guo Jianjun's introduction, Jiang Yan knew that the entire area on the right side of the factory was a workshop for the production of compulsory ammunition, which took up almost half of the factory.

The workshops were separated by barbed wire, and there were soldiers standing guard at the entrance. After entering, Jiang Yan and the others met soldiers with guns patrolling the workshop.

"The guards are so tight."

Jiang Yan asked Guo Jianjun next to him.

"Before, there were national secret agents doing sabotage, so it was a little stricter. Our factory also produced guns and ammunition for ZYJ fighters before. It is a key production factory. In those locations, a few anti-aircraft guns were specially placed before."

Guo Jianjun said, pointing to a few of them.

Jiang Yan glanced curiously, and those few places are almost the relatively open places inside, with a good view.

Walking into the workshop where the bullets are produced, the huge roaring life comes through, which is a bit deafening.

"Old Hu, old Hu."

Hu Dahai, who was talking to the workers, heard someone calling him, turned his head and saw Jiang Yan and the three of them. After Hu Dahai saw it, he left the workers and walked towards Jiang Yan quickly.

"Jiang Gong, why are you here?"

Walking in front of Jiang Yan, Hu Dahai asked a little strangely.

"I haven't seen the bullet production line yet, so I'll come over to visit and satisfy my curiosity. By the way, has the production of copper-clad steel bullets started?"

"Not yet. Now I am arranging workers to do a basic cutting of the copper-clad steel. After cutting, the next step of production can proceed."

"That's all right, you go to work first, I will take a casual tour by myself."

Hu Dahai shook his head when he heard Jiang Yan's words.

"It's all been arranged. They can produce it according to the previous production method. Anyway, I'm waiting here. Why don't I show you around."

Hearing what Hu Dahai said, Jiang Yan did not refuse.

"These equipment seem to be quite old." Jiang Yan said with a sigh looking at these somewhat old equipment.

"No, these equipments are about ten years old. These are the equipments of the former Fengtian Ordnance General Factory."

Hearing Hu Dahai's words, Jiang Yan was a little surprised, how could there be the equipment of Fengtian Ordnance Chief in this arsenal.All asked a question.

Random Hu Dahai explained the origin of these devices.

It turned out that before SL withdrew from the Northeast, all the factories and equipment in the Northeast were dismantled and shipped back to China. However, due to the lax military discipline of the S Army at that time, our party obtained a lot of equipment from them through some special means.

Later, at the beginning of the establishment of the Military Industry Department of our party, through negotiations, it took over from the S Army a number of important arsenals such as the Dadong District Ordnance General Factory in Fengtian District, the Wenguantun Tank Repair Factory, and the Gujiazi Gunpowder Factory.The Military Industry Department of the Red Party took away more than 30 machines and more than 200 tons of supplies. SL also successively handed over Fushun, Benxi, Ji'an (now referred to as Ji'an), Anshan, Liaoyang, Yanbian and other places, as well as their arsenals and chemical factories, to the Red Party.

These factories have become some trump cards in our party's hands.

Originally, the [-] Arsenal was a military factory located in Yanbian. Due to the resistance against M and the aid of C, Yanbian was too close to the national border, and our country did not have absolute air supremacy, so the [-] Arsenal was relocated to Bingcheng.

"Each warhead of Jiang Gong is composed of a warhead shell and a bullet core. These two parts are produced separately and assembled together in the final link. The processing flow is as follows: extension processing - punching tip - manufacturing bullet core - There are four processes for warhead assembly."

After Hu Dahai introduced these, he pointed to one of the machines and said: "This machine is an extension processing machine. It mainly uses the processing method of stamping metal raw materials into bottomed hollow parts."

"This is a basic process of metal processing. In the manufacture of bullets, the circular blank is gradually deformed under the pressure of the punch, and finally the raw material is stamped into a cup with a bottom."

While Hu Dahai was explaining, the workers took the cut copper-clad steel to the stealth processing machine. As the machine turned, a large number of bullet embryos were produced.

At this time, Hu Dahai went on to say: "This stretch processing machine can produce about [-] embryos of such bullets in one hour.

After Hu Dahai introduced the extension processing machine, he pointed to several machines next to it and introduced it to Jiang Yan: "After the round cup-shaped blank is manufactured, a professional machine tool is used for point punching, the purpose is to make the warhead shell The rough embryo forms the shape of a warhead."

"So far, the manufacture of the warhead case has basically come to an end."

Hearing Hu Dahai's introduction, Jiang Yan nodded, and then Jiang Yan asked. "There needs to be something filled inside to form the final bullet."

Hearing Jiang Yan's question, Hu Dahai brought Jiang Yan and the others to a machine, and said, "A bullet core is generally composed of a steel core and a lead sleeve. The use of a softer lead sleeve is to minimize the wear of the bullet and the rifling. The technicians The lead is first melted into the mold to form the shape of the bullet, and finally the manufacturing steel core is pressed into the lead sleeve, and the production of the bullet core is completed."

"After the bullet core is completed, it is time to assemble the bullet. After the bullet core is loaded into the bullet shell, it is still necessary to process the tail of the bullet shell to prevent the bottom from curling. The bullet core and bullet shell are rolled together to form a whole, and then the excess is removed. materials, the warhead part is assembled."

After Hu Dahai finished the introduction, he casually took a manufactured bullet from a worker and handed it to Jiang Yan.

Jiang Yan took the bullet and took a closer look. The shell of the bullet is made of copper-clad steel that has not been treated with chemicals. It's heavy, but it looks like it's well handled, as if it's made of a whole piece of steel.

According to Hu Dahai, there are both similarities and differences between the manufacture of bullet casings and the manufacture of warheads.

The manufacture of the cartridge case also mainly lies in the processing of metal, and in principle it is also based on the extrusion method.However, the shell case has a larger aspect ratio than the warhead, and the material is also a rod-shaped copper-clad steel with higher hardness.

It has a large amount of deformation and requires high processing force and processing temperature. The factory generally uses the reverse extrusion method in the extrusion manufacturing of the cartridge case.

After being processed by the reverse extrusion method, the casing barrel is basically formed. After that, it is necessary to use a cutting machine to cut off the waste formed on the top of the casing barrel. After cleaning with chemical reagents and surface treatment on the bottom of the casing, the manufacturing process of the casing is completed.

It was not until this time that the production of two bullets was officially completed. It is not an easy matter to finally form a bullet. Through Guo Dahai’s introduction, Jiang Yan understood at this time why some countries are still so developed in later generations. Qualified bullets cannot be produced.

There is so much black technology on this small bullet, and it is so technical.

(End of this chapter)