The fat man went to find Sun Dasheng, and brought a seventy-year-old "old expert" surnamed Li, this person is a mechanic, who worked in the Red Sun Machinery Factory in the seventies, which was an ordnance factory in the era of "entering the mountains and caves", although the technology is outdated, but it is also the most professional person in the industry at present. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

After seeing Sun Dasheng, the fat man's first words made Sun Dasheng a little inexplicable: "Brother Sheng, you are unfair to me, compared to Jiang Hongfei, I am your descendant, right?" Why is my treatment not as good as Jiang Hongfei's old boy? ”

Sun Dasheng glanced at him: "Hurry up and do things, and have the heart to be coquettish here, be careful that I kick your ass." ”

Expert Lao Li listened to it, it seems that the new ruling faction of Yuanfeng is quite easy.

"Am I wrong? You promised Jiang Hongfei a machete yesterday, and today you sent more than fifty of them, listening to everyone's discussion, that thing can cut off steel bars, no matter how you cut it, it can't roll the blade, it's an artifact, Jiang Hongfei's old boy is so happy that he doesn't know what his surname is. But what about me, you want me to build a team of at least 300 people, but I only have 60 guns now, and you have to help me find a way to find the remaining gap. ”

Sun Dasheng blinked: "Fatty, of course I know that this matter is very difficult, if it is not difficult, will I ask you to do it?" ”

"Well, it's useless to wear a high hat, it's hard for a good daughter-in-law to cook without rice, if you don't help me solve the problem of firearms, then I can only pick a pick."

Sun Dasheng was helpless: "I haven't ever made a gun, how can I help you?" Why don't you go and find it, the huge Yuanfeng District, maybe there are people you need? ”

The fat man pushed Lao Li in front of him: "Solemnly recommended, this is the firearms expert I was looking for, but the problem is that now we don't have the equipment and can't make guns." ”

"But where am I going to get the equipment for you? Yuanfeng doesn't even have a lathe? I used to hear that many folk masters can use lathes to process guns. ”

Lao Li smiled and spoke: "Mr. Sun, the lathe can indeed process guns, but there are two fatal flaws, the first barrel material can not be guaranteed, for example, in the past, the imitation Soviet rifle was basically universal 7.62mm bullets, but the caliber of the barrel was not 7.62mm, that is to say, the diameter of the bullet was greater than the muzzle. But why didn't the bullet get stuck in the barrel because of this? There is a "interference" fit between this bullet and the barrel, and the automatic loading of the bullet is achieved by the recoil force generated by this good sealing performance. That is, this barrel actually has a certain "elasticity". This "elasticity" is achieved by materials and processing technologies. If this problem is not solved, there will be no accuracy at a range of more than 20 meters due to poor sealing between the bullet and the barrel. ”

The fat man obviously didn't understand, and he didn't want to understand, but he also nodded desperately with Sun Dasheng, looking like he thought it was true.

Lao Li continued: "There is another one that you must have heard of, the barrel is rifled, relying on the current lathe, the four left-handed rifling in the barrel cannot be accurately processed. ”

The fat man stretched out his hands, looking helpless: "Brother Sheng, now you understand, it's not that I don't want to work hard, if I can, I'd rather eat grass than hold my milk." ”

What kind of metaphor is this, Sun Dasheng ignored him, and continued to communicate with Lao Li: "Old Li, speaking of which, now it is a problem of a gun barrel, if the problem of the gun barrel is solved, will all other problems be solved?" ”

Lao Li nodded, he was also a little helpless, speaking of which, since the end of the world, he really didn't think that he would live for a few days, but the new world is willing to lead everyone to fight, as an old revolutionary, he still has a feeling that the blood is still not cold, he really wants to help, helping is equivalent to saving himself, but now, he really can't overcome this technical problem.

"Then leave the problem of the barrel to me, you still have more than 200 guns, then I will get 300 barrels for you, and the fat man can come to pick up the goods tomorrow."

Lao Li suddenly showed the symptoms of Alzheimer's disease, and the whole person was a little ignorant, although he knew that it was very impolite, he still said angrily: "Mr. Sun, do you know what you are talking about?" The material of the barrel is definitely not as easy as you think, ordinary steel is inelastic and cannot be processed by relying on ordinary lathes. ”

Sun Dasheng understood his doubts, but he didn't explain, just asked: "Old Li, what kind of barrel do you need to process, just bring me a sample." By the way, we need guns that are more penetrating, preferably fast-fired. ”

Lao Li was stunned for a while, and his head, which was already a little old, came back to his senses from the surprise just now and restarted: "Although the Type 95 is more advanced, the 5.8mm bullet can only penetrate the 8mm steel plate, which is not as penetrating as the AK47, and the AK is also better made." ”

The fat man wanted to laugh in his heart, AK47 This gun is old-fashioned, the products before the 70s of the last century, Lao Li admired it so much, but because he was familiar with it and had more confidence in doing it.

Sun Dasheng nodded: "Okay, you send a sample of the barrel as soon as possible, there are only two of the 85 snipers that are not enough, you also send the sample, I will help you get 10." ”

Lao Li felt that this young man was really a bit arrogant, how could he make a barrel that conformed to the standard standard? The material and rifling are not at all the craftsmanship that he can imagine as a second hanger, not to mention that Sun Dasheng's words have made it clear that he doesn't understand firearms, so where does he get his confidence? It's so inexplicable.

Sun Dasheng didn't explain either, but the fat man trusted him unconditionally, and Lao Li could only sigh helplessly. He thought that this young man would not be able to get the barrel of the gun in the end, and then he would destroy two guns, especially one of which was still an 85 sniper.

The things that Sun Dasheng wanted, the fat man naturally delivered them as soon as possible, and only ten minutes later, the barrel was delivered to him.

After getting the barrel, he quickly analyzed the composition of it, in his eyes, in fact, there is no secret to the metal element, even if it is a complex alloy, as long as it comes to him, it can be clearly separated and obediently reported to the house.

In fact, the material of the barrel is not special, that is, alloy steel plus molybdenum and tungsten, and these materials are not difficult to find.

As for some processing techniques: such as surface heat treatment of the inner chamber, high-frequency quenching, nitriding and other surface heat treatment, etc., he can directly reorder the metal elements according to the particle structure of the finished barrel. As for rifling, it is a piece of cake, with his control over the metal elements, the rifling is made, and the error is micron.

So Sun Dasheng didn't spend a lot of time on the barrel of the gun, and after the production was completed, he went to the unfinished building alone, and he had a bold plan: to capture the silver bat. The outland creature was pressing, giving him a sense of urgency, and he wanted to test his ability to fight ice from the Silver Bat, and he hoped to obtain a higher level of metal from the Silver Bat.

The fat man happily transported all the barrels into the processing workshop, and Lao Li was very surprised to see that the barrels were processed so quickly, but he still didn't believe that these barrels could fully meet the standards.

After assembling an AK, after the shooting test, the accuracy is completely up to standard, and after continuous firing, the barrel does not become soft, that is, everything meets the standard of the standard!

There is no way to test the durability of the end, and although the bullets are being manufactured now, they simply cannot afford to be wasted considering the current enemy.

But even so, Lao Li was completely surrendered, and he muttered a little distractedly: "It's incredible, Mr. Sun, how did he do it?" It's incredible......"

The fat man smiled: "Lao Li, don't be stimulated to Alzheimer's disease, if you are demented, then who will I find to be a technical guide." Hurry up, you have to help me train a few more young successors, it's really scary to see you like this, dementia from time to time. ”

Lao Li doesn't blame the fat man, in his eyes, the fat man is a naughty boy, Tong Yan is unscrupulous, he asked the fat man: "This Mr. Sun, is he an expert in metal materials?" ”

"That's nature, otherwise how could he do it so quickly?"

"Then he should still be a master of precision forging, the process of this barrel is very complicated, and it can be completed so quickly...... No, it can be done so quickly, unless there is an assembly line processing plant behind him......"

Seeing Lao Li's puzzled look, the fat man laughed at him and couldn't see through: "Lao Li, this is your fault, you look at me, don't think about those brain-consuming things, and it's no good." Anyway, now that the problem of the barrel is solved, you step up the assembly. I'm going to go to training, alas, it's really annoying, my sister-in-law has to join my gun team, isn't this adding to the chaos? ”

"Sister-in-law?" Lao Li wanted to ask who he was, but thinking about those messy things, what was the use of asking by himself? I didn't talk any more.

But the fat man thought about it and became happy again: "But the little sister-in-law joined the knife team, hehe, Jiang Hongfei, that old boy, you can see now, life is much more difficult than me." ”

(The third watch is completed, and the occasional writing is very exciting, can everyone vote a little excited?) ）