Shen Wanqing said with a smile: "When I was stacking cards, I had already written down what each card was, and then watched these cards being caught by you in your hands, so that I could not win?" ”

Chen Bo exclaimed: "You can remember what so many cards are!" ”

Shen Wanqing smiled and said nothing, Chen Bo smiled: "Okay! The future is terrifying, and it is considered that I Chen Bo did not work in vain to see such a master, send me the pattern of what you want to do, and I will take my apprentices to make it for you day and night. ”

Out of the gate, Shen Wanqing asked Lin Yuan with a smile: "Look, I did you a big favor again, how can you thank me." ”

Lin Yuan smiled: "What do you say? ”

Shen Wanqing smiled and didn't say anything.

After Lin Yuan returned to the station, Liu Jinqiu had already arranged for engineers to draw the drawings of various molds of steel casting, most of these drawings were stored in the personal computer, and they could be printed out, in order to make the 19th century master craftsmen understand the drawings of the 21st century, Lin Yuan specially arranged for an engineer to stay with Chen Bo to be responsible for guidance.

Then Lin Yuan invited Liu Jinqiu, Su Zhengming and other experts together, and Lin Yuan said straight to the point: "Professors, war may break out at any time, can we produce rifles now?" ”

At this time, an old man spoke, his name is Luo Chaoying, an academician of the Chinese Academy of Engineering, and the chief engineer of the ejection system of the Beijing ship, Luo Chaoying said: "According to the captain's arrangement, I found a few engineers to design an automatic rifle, and I believe that several of you have seen it." ”

Su Zhengming smiled: "Lao Luo, is that your own design?" How do I look no different from the AK47, let me ask a few questions about the materials, first, what is the barrel made of? ”

Liu Jinqiu said: "We used the spectrometer on the Beijing ship to test the batch of iron ore shipped in, and found that it contained a certain amount of chromium, so we can smelt a batch of chromium alloy for the barrel of the gun, which can withstand high temperatures." ”

Lin Yuan was a little hesitant when he saw Liu Jinqiu say this, so he asked, "Old Liu, is there any difficulty in smelting this alloy?" ”

Liu Jinqiu said: "We lack temperature detection equipment, I wonder if the road can be solved from the Beijing ship?" ”

Lin Yuan said: "Now that our nuclear reactor is in the stage of low-power operation, nothing should happen, so I will bring the temperature detection equipment there for the time being." ”

Liu Jinqiu nodded and said: "With the temperature detection equipment, combined with the relevant smelting theories of our time, we can almost make heat-resistant alloys, but the relevant national standards are definitely not met, so let's solve the urgent need like this." ”

Su Zhengming said: "Also, how to solve the processing problem? ”

Luo Chaoying said: "In our firearms factory, there is a special workshop to process rifling, we have a special industrial robot, so the rifling processing is very fast, but now, we have to use the simplest method to do, first of all, we have to drill holes in the bar, that is, the cylindrical steel rod, this is still easy to do, I know that there are some machining equipment on the Beijing ship, and the problem of drilling is not big." ”

Luo Chaoying said again: "Then it's rifling, I suggest, in order to process it quickly, let's just make a smoothbore gun." ”

Lin Yuan said: "The accuracy of the smoothbore gun is too poor, can you think of a way." ”

Luo Chaoying said: "The processing of rifling is not very difficult, we let the tool move horizontally, and let the barrel rotate around the axis of the tool, so that as long as the two speeds are right, we can process the appropriate rifling." But we don't have special equipment, I think so, we can build some of these equipment. ”

Luo Chaoying continued: "This kind of equipment can be operated by manpower, first of all, there is a large runner, shake by manpower, our force arm is longer, so a person can shake it completely, this runner is connected to the slider through a connecting rod, so that the rotation is transformed into translation, the end of the slider is connected to the knife, the knife can be extended to the barrel, the barrel is fixed on the chuck, the chuck and a ratchet are fixed, the slider pushes the ratchet through the connecting rod that touches the ratchet at the other end while doing horizontal movement, The ratchet drives the chuck to rotate, so that the rifling can be processed. The knives are available on the Beijing ship, but they can't be used directly, so I'll go back and improve them. ”

Su Zhengming said: "The problem of the barrel is solved, I suggest that the receiver, magazine and other related parts use cast iron, and then use stamping equipment to press into the corresponding shape, we can also manufacture the stamping machine ourselves, cast iron is softer, and it is easier to stamp." ”

Luo Chaoying said: "Then what do we use as motivation? ”

Su Zhengming said: "The stamping machines of our era were driven by electric motors, and we were the same when we arrived here, I remember that the tractor on the Beijing ship was driven by electricity, so it was better for us to take down the motor on it and use it first." ”

Lin Yuan said: "That's fine, but do you also have to do relevant improvement work?" ”

Luo Chaoying said: "There is no problem with this, I will take someone to do it." ”

Su Zhengming said again: "Gun butt or something, I think we will follow the original design of the AK gun family, that is, just use wood, as for the processing and anti-corrosion of wood, I believe that there must be many carpenters in this country, and they should be much better at these things than us." ”

Su Zhengming said: "Since it is an automatic rifle, it is inevitable to use a re-entry spring, and the steel used in the spring is called 'spring steel', which has always been listed as a special steel in our country, can we get this kind of steel out." ”

Liu Jinqiu said: "In our time, alloy spring steel was generally used, but now we have a shortage of alloying elements, we can use carbon spring steel, and the relevant manufacturing theories are very complete, and we can make suitable spring steel." ”

Luo Chaoying said: "We also need to use relevant tools in the production of springs, and we can still make them ourselves." We let the steel wire move horizontally in a slot, and then block the steel wire with something on the motion path, so that the steel wire will be separated from the plane where the groove is located and move to the vertical plane of the plane where the groove is located, so that the steel wire will be pressed into a spiral shape, and we will get the spring, and the power problem can be as Academician Su said, the motor on the tractor can be removed for our use. ”

Lin Yuan said: "What about the other parts on the firearm?" ”

Luo Chaoying said: "We have reduced the parts as much as possible when designing, and the necessary batch of parts and components can be completely solved by the steel factory. ”

Lin Yuan nodded and said, "The next question, how to solve the bullet?" ”

The experts present shook their heads, Su Zhengming said: "The problem of bullets is even greater, first of all, in order to prevent corrosion, the bullet must be plated with a layer of copper on the outside, but we are now short of copper, even if it is completely made of steel, we are also facing one of the biggest difficulties, that is, our production and manufacturing capacity is seriously insufficient, and it is difficult for us to produce enough bullets." ”

Lin Yuan said: "Then let's do this, I see that there are still a lot of bullets in the ammunition depot of the Ryukyu Kingdom, so it is better for us to make the caliber the same as their bullets." ”

Seeing that the experts present nodded one after another, Lin Yuan said, "Then let's do it, let's go our separate ways." ”