Siheyuan starts from a good life

After Jiang Yan and the others showed their IDs at the barbed wire gate, they entered the workshops where guns and ammunition were produced.

Through Guo Jianjun's introduction, Jiang Yan knew that the entire area on the right side of the factory was a workshop that produced forced ammunition. This area occupied almost half of the factory.

These workshops were separated by barbed wire, and there were soldiers standing guard at the entrance. After entering, Jiang Yan and the others came face to face with soldiers holding firearms and patrolling the workshops.

"It's so well guarded."

Jiang Yan asked Guo Jianjun next to him.

"There were government spies who sabotaged it before, so we were a little stricter. Our factory had produced guns and ammunition for ZYJ fighters before, and it was a key production factory. Several anti-aircraft guns were specially placed in those locations."

Guo Jianjun said, pointing to several places.

Jiang Yan took a curious look, and found that those places were almost the relatively empty areas with a good view.

Walking into the bullet production workshop, a huge roar came through, which was a bit deafening.

"Lao Hu, Lao Hu."

Hu Dahai, who was talking to the workers, heard someone calling him. He turned around and saw Jiang Yan and the three of them. After seeing this, Hu Dahai left the workers alone and walked quickly towards Jiang Yan.

"Gong Jiang, why are you here?"

Walking up to Jiang Yan, Hu Dahai asked a little strangely.

"I haven't seen the bullet production line yet, so I came here to visit and satisfy my curiosity. Has the production of copper-clad steel bullets started?"

"Not yet. Now I am arranging workers to do some basic cutting of the copper-clad steel. Only after cutting can we proceed to the next step of production."

"Okay, you go and do your work first, and I'll take a look around by myself."

Hu Dahai shook his head after hearing Jiang Yan's words.

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

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

"These equipments seem to be quite old." Jiang Yan said with a sigh as he looked at these somewhat old equipments.

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

Hearing Hu Dahai's words, Jiang Yan was a little surprised as to why there was equipment belonging to the Chief of Fengtian Ordnance Industry in this arsenal. Everyone asked.

Randomly Hu Dahai explained the origin of these devices.

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

Later, after the establishment of the Ministry of Military Industry of our party, through negotiations, we took over from the S Army many important arsenals such as Dadong District Ordnance Factory, Wenguantun Tank Repair Factory and Gujiazi Gunpowder Factory in Fengtian area. The Red Party's 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 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 of the trump cards in our party's hands.

Originally, the 663 Arsenal was a military factory located in Yanbian. Due to the resistance to M and the aid to C, Yanbian was too close to the national border, and our country did not have absolute air superiority, so the 663 Arsenal was moved to Bingcheng.

"Each warhead by Gong Jiang is composed of a warhead shell and a core. These two parts are produced separately and assembled together in the final step. The processing flow is as follows: drawing processing - punching - making the 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 extrusion processing machine. It mainly uses a processing method of stamping metal raw materials into bottomed hollow parts."

"This is a basic process of metal processing. In the manufacture of warheads, the round blank is gradually deformed under the pressure of the punch, and the raw material is finally punched 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. As the machine rotated, a large number of bullet embryos were produced.

At this time, Hu Dahai continued: "This extrusion processing machine can produce almost three thousand embryos of such bullets in one hour.

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

"At this point, the manufacturing of the warhead casing has basically come to an end."

After hearing Hu Dahai's introduction, Jiang Yan nodded, and then Jiang Yan asked. "What needs to be filled inside to form the final bullet head."

Hearing Jiang Yan's question, Hu Dahai took Jiang Yan and the others to a machine and said, "The bullet core is generally composed of a steel core and a lead sheath. The use of a softer lead sheath is to minimize the wear of the warhead and rifling. Technical staff The lead will first be melted into the mold to form the shape of the bullet, and finally the manufactured steel core will be pressed into the lead sleeve, thus completing the production of the bullet core."

"After the bullet core is completed, it is time to assemble the bullet. After the bullet core is installed into the bullet shell, the tail of the bullet shell still needs to be processed 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 introduced it, he casually took a manufactured bullet from a worker and handed it to Jiang Yan.

Jiang Yan took the bullet and looked at it carefully. 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. He shook it casually twice and it felt like it was still there. It's quite heavy, but it looks like it handles well. It's like it's made of one piece of steel.

According to Hu Dahai, there are similarities and differences between cartridge case manufacturing and warhead manufacturing.

The manufacturing of cartridge cases also mainly involves the processing of metal, and in principle the extrusion method is the main method. However, the cartridge case has a larger aspect ratio than the warhead, and the material is also a rod-shaped copper-clad steel with higher hardness.

The amount of deformation is large, and the processing force and processing temperature requirements are high. Factories generally use the reverse extrusion method in the extrusion manufacturing of cartridge cases.

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

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

This small bullet has so many black technologies and is so skilled.