Jiang Yan showed their documents at the barbed wire gate before they stepped into the scope 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 occupied almost half of the factory.

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

"It's so well guarded."

Jiang Yan asked Guo Jianjun next to him.

"There were spies from the state government who sabotaged it before, so it was a little stricter, our factory also produced guns and ammunition for ZYJ fighters before, and it belonged to a key production factory, and a few anti-aircraft guns were deliberately placed in those positions."

Guo Jianjun said, pointing to a few of them.

Jiang Yan glanced at it curiously, those places were almost the relatively empty places here, and the view was very good.

Walking into the bullet production workshop, the huge roar of life wears through, which is a bit deafening.

"Lao Hu, Lao 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.

"Jiang Gong, why are you here?"

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

"I haven't seen a bullet production line yet, so I came to visit it to satisfy my curiosity, and by the way, the bullets of copper-clad steel have begun to be produced?"

"Not yet, now I am arranging workers to cut the foundation of the copper-clad steel, and then the next step of production can be carried out."

"Okay, you go get busy first, I'll take a look at it myself."

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

"It's all arranged, they can produce according to the previous production method, anyway, I'm waiting here, why don't I take you to see it."

Hearing Hu Dahai say this, Jiang Yan did not refuse.

"It looks like they're some years old." Jiang Yan looked at these old devices and sighed a little.

"No, these equipment are almost ten years old, and these are the equipment of the former Fengtian Ordnance Factory."

Hearing Hu Dahai's words, Jiang Yan was a little strange, how could there be the equipment of the chief of Fengtian Ordnance Industry in this arsenal. All of them asked.

Random Hu Dahai explained the origin of these devices.

It turned out before the SL withdrew from the northeast; All the factories and equipment in the Northeast were dismantled and shipped back to China, but 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 General Ordnance Factory of the Dadong District, the Wenguantun Tank Repair Factory, and the Gujiazi Gunpowder Factory in the Fengtian Prefecture. The Red Party Military Industry Department took away more than 30 machines and more than 200 tons of supplies. SL also successively handed over Fushun, Benxi, Ji'an (now 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 of the hole cards in our party's hands.

Originally, the 663 Arsenal was a military factory located in Yanbian, but due to the resistance to M and aid C, Yanbian was too close to the national border, and China did not have absolute air supremacy, so the 663 Arsenal was relocated to the ice city.

"Each warhead of Jiang Gong is composed of a warhead shell and a core, which are produced separately and assembled together in the final link. The processing process is as follows: extension processing, punching, manufacturing bullet core, warhead assembly. ”

After Hu Dahai introduced these, he pointed to one of the machines and said: "This machine is a drawing machine, which mainly uses the processing method of stamping metal raw materials into hollow parts with a bottom. ”

"This is a basic process of metalworking, in the manufacture of warheads, the round blank is gradually deformed under the pressure of the punch, and finally the raw material is stamped into a cup shape with a bottom."

While Hu Dahai was explaining, the workers came to the stealth processing machine with the cut copper-clad steel, and with the rotation of the machine, a large number of bullet embryos were produced.

At this time, Hu Dahai continued: "This extension processing machine can produce almost 3,000 embryos of such bullets in an 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 to carry out the punching process, with the purpose of making the warhead shell rough embryo form the shape of the warhead. ”

"At this point, the manufacture of warhead casings has basically come to an end."

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

Hearing Jiang Yan's question, Hu Dahai took Jiang Yan and them to a machine and said: "The bullet core is generally composed of a steel core and a lead sleeve, and the use of a softer lead sleeve is to minimize the wear and tear of the warhead and rifling. The technician melts the lead into a mold to form the shape of the bullet, and finally presses the manufacturing steel core into the lead sleeve, so the bullet core is made. ”

"After the core is completed, it is time for the warhead assembly. After the core is loaded into the warhead case, the tail of the warhead shell still needs to be processed to prevent the bottom from curling. The bullet core and the warhead shell are rolled tightly into a single unit, and then the excess material is removed, and the warhead part is assembled. ”

After Hu Dahai finished introducing, 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 was made of copper-clad steel that had not been treated with chemicals, it looked like it was made of copper, and it was turned twice at random, and it felt quite heavy, but it looked very well mixed into one, as if it was made of a whole piece of steel.

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

The manufacture of shells also mainly lies in the processing of metal, and in principle, the extrusion method is also the main method. However, the bullet case has a larger length-to-width ratio than the warhead, and the material is also a rod-shaped copper-clad steel with greater hardness.

Its deformation is large, the processing force and processing temperature requirements are high, and the factory generally uses the reverse extrusion method in the extrusion manufacturing of the cartridge case.

After the reverse extrusion processing, the cartridge shell barrel is basically formed, and then the waste material formed above the cartridge shell barrel needs to be cut off by a cutting machine, and the manufacturing process of the cartridge case is completed after the cleaning of chemical reagents and the surface treatment of the bottom of the cartridge case.

It was not until this time that the two bullets were officially completed, and it was not a simple matter to finally form a bullet, through Guo Dahai's introduction, Jiang Yan understood at this time why the later generations were so developed, and some countries still could not produce qualified bullets.

On this small bullet, there are so many black technologies, and they are so technical.

(End of chapter)