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Chapter 440 Solve the problem of the barrel

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    "Mr. Lu is from Germany?" Qin Baoshan was very happy when he got the news. When he greeted a group of people outside the Huangyadong Arsenal, next to the iconic quadruple anti-aircraft machine gun,  Qin Baoshan immediately asked, "Have you ever been to the Krupp factory?"

    In this era, the industrial technology of the Germans is also top-notch, and among the various metallurgical factories of the Germans, Krupp is naturally second to none. Krupp is a steel factory that produces the best steel, of course  It was used to make cannons.

    Lu Da nodded: "Director Qin knows about the Krupp factory?"

    He has already heard that Factory Manager Qin here is quite famous. He has a clever mind, and the weapons he designs are very practical. The assault rifle he made recently has even faintly become a world-leading famous gun. Maybe in the future  It will be imitated as a trend, but this director Qin has never been to school and is an expert in soil.

    When I saw it today, I didn't expect the soil experts to know Krupp?

    "Yes." Qin Baoshan said: "The cannon produced by the Krupp factory has been quite famous since the time of Li Hongzhang in the Republic of China. How could I not know about it?"

    Hearing the other party's answer, Lu Da nodded again, yes, why didn't I think of this, the big eastern country actually likes Krupp's cannons the most.

    As a metallurgical engineer, Lu Da also stayed in various metallurgical factories in Germany during his study in Germany. The Krupp company left a deep impression on him.  It is estimated that he has agreed to the German invitation and stayed in Krupp.

    Now, looking at the young Qin Baoshan in front of him, Lu Da felt unreal. Why is this person so young and knows so much?  This is not scientific.

    "Since you have stayed in the Krupp company, you should have seen the cannons they produce." Qin Baoshan said: "Mr. Lu, look at our factory, can we improve it and produce 88mm cannons?"

    88mm gun?  Hearing Qin Baoshan's words, Lu Da couldn't help showing a bitter smile on his face: "Director Qin, I'm here to help solve the problem of white pig iron. It's not easy to smelt this iron into gun steel.  ah."

    This is not a matter of saying a word. Modern steelmaking plants cannot be imitated by indigenous steelmaking methods. Making gun steel requires modern industry as the foundation.

    In the simplest terms, the process from pig iron to steel is a refining process. Commonly used electric furnaces consume a lot of electricity, which is impossible to afford here. Moreover, the most commonly used method of oxygen top blowing to remove impurities is also  A large amount of oxygen is needed, and there is no supporting industrial base in the country, so it cannot be solved at all.

    Besides, the base of this military factory is not safe, and it may face bombing by devils at any time. At this time, it is too difficult for them to produce 88mm guns.

    "Yes," Qin Baoshan said, "I originally thought that if we could produce 88mm anti-aircraft guns, we would no longer have to be afraid of the little devil's planes. Now, we can only make do with 75mm anti-aircraft guns. However, Mr. Lu  , since you are here, you can help us solve the problem more, let alone the barrel, the problem of the barrel must be solved."

    "Baoshan, Engineer Lu" The brigade commander on the side wanted to persuade him. Engineer Lu came here after so many comrades did so much work. Don't scare people away all at once.

    People come to the mountains to help the Eighth Route Army solve problems. The conditions are so difficult. If they go to the Kuomintang, the treatment will be much better.  You boy, don't do such a thing.

    However, before the brigade commander finished persuading him, Lu Da had already said, "What about the barrel?"

    "Yes." Qin Baoshan said: "Our Eighth Route Army makes its own guns, and we can only use rail steel. The barrels made of this steel are too low in strength and can only fire a few hundred rounds. Therefore, we can only  It is to manufacture bolt-action rifles. Now the assault rifles we have developed by ourselves use a lot of bullets and the barrel can¡¯t bear it.  It¡¯s convenient if you can make a durable barrel yourself.¡±

    This is a problem that Qin Baoshan wants to solve at the moment, but he can't solve it for the time being. In his vision, with the mining of copper mines and the continuous expansion of arsenals, the problem of the Eighth Route Army's ammunition shortage will gradually decrease. Therefore,  Advanced firearms such as assault rifles will definitely have a certain demand in the end. Other parts are easy to say, the key is the barrel!  How many 38 large caps can withstand the destructive use of one's own side?

    Only if you can make it yourself, everything else is easy to say, this has to be solved, besides, it is really solved, eightThe barrel of a rifle can also be used in this way, which can greatly improve the service life of the weapon.

    "Then how do you plan to solve it?" Lu Da asked Qin Baoshan.

    How to improve the life of the barrel?

    This is an important issue in the metallurgical industry. The environment in which the barrel is used is quite complicated. It must withstand the pressure of the bullet when it is fired, reduce the corrosion of the barrel by the propellant, and withstand the wear and tear of the barrel when it is released.  Different countries, different technologies, and different solutions.

    "The best way, of course, is to re-smelt the steel used to make the gun barrel and turn it into high-carbon steel. If high-frequency quenching and nitriding are used, then the hardness of the gun barrel can reach 60hrc. However, it is estimated that we have  Without these metal smelting methods, this method is probably not enough." Qin Baoshan said to Lu Da.

    Lu Da was shocked deep in his heart. Did Qin Baoshan in front of him really never go to school?  How do you say that they are all the most professional?  High-frequency quenching and nitriding are the most cutting-edge technologies researched in Krupp, and he actually said it directly from his mouth?

    However, these technologies are really not something that local methods can solve.

    "So, I think our most reliable solution at present is chrome plating." Qin Baoshan said: "Chrome plating on the barrel can increase the life of the barrel by ten times. If it was able to fire 500 rounds before, now it can at least  It can fire 5,000 rounds, or even tens of thousands of rounds, which is enough for us to use."

    "Chrome plating?" Liu Daquan approached: "We've heard of gold plating and silver plating, but we haven't heard of chrome plating. What is this chromium?"

    Liu Daquan didn't know, but Lu Da's heart could already be described as shock: "Chrome plating?"

    "That's right, the Czech-made machine gun, the piston rod is chrome-plated, the tube of the kid's 99 light machine gun is chrome-plated, and the old man's" (Remember the website URL: www.hlnovel.com
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