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Chapter 1123: The Oxygen Problem

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    However, it is not easy to smelt it. Smelting pig iron into steel requires a complicated reaction process.  A large number of impurities in it need to be eliminated, especially, it is even more difficult to reach the level of gun steel.

    There are dozens of countries in the world that can smelt steel, and there are no more than ten countries that can smelt steel for cannons. Among them, Krupp is definitely one of the most advanced manufacturers. Lu Da once worked as an intern at Krupp  But, that's seen the big world.

    For a country, to examine the level of a country's industrial base is to see how much steel the country has smelted.  The annual output of steel is an important indicator, which is why there was a large steelmaking movement decades later.  It's a pity that the steel smelted in that earthen furnace is basically waste.  Although Qin Baoshan has not experienced that period, he is very interested in that period, so he has heard many things about that period. In a word, ironmaking can be done, but it is not so simple to make steel by local methods.  For the Eighth Route Army, wanting to smelt steel that can make cannons is simply a dream.

    "From pig iron to steel, it is necessary to further reduce the carbon content in the steel, and at the same time reduce the content of various impurities. The specific method is to re-melt the steel, and then pass it into the air, relying on the oxygen in the air to oxidize the impurities.  , into various gases or separated from waste slag, leaving relatively pure steel.¡± Lu Da explained: ¡°However, since the air contains a lot of nitrogen, the smelted steel will be nitrogenized and become brittle.  When I was at Krupp, I studied with many metallurgical experts. If pure oxygen is used to make steel, the quality of steel will be better. Therefore, although our current equipment is inferior, if pure oxygen is used  If you come to make steel, then, I believe, the quality of the steel will not be bad."

    Hearing Lu Da's words, Qin Baoshan frowned even more.

    "Pure oxygen? Are you asking me to solve this problem?" Qin Baoshan asked.

    Qin Baoshan, who came from later generations, naturally knows that steelmaking with pure oxygen is inevitable. Only the use of pure oxygen can improve the quality of steel. However, obtaining this oxygen is not easy.  It needs to liquefy the air.

    The air will be liquefied after it is pressurized and cooled, and after it is liquefied, it is then allowed to volatilize. According to the difference in boiling point, the nitrogen is let out first, and the rest is oxygen.  The principle is simple, but the equipment is complex.

    "Yes." Lu Da nodded: "If we can't get oxygen, then with our current conditions, we won't be able to manufacture advanced steel at all, and the smelted steel will definitely not reach the level of gun steel."

    After hearing Lu Da's words, Qin Baoshan continued to ponder, "It's hard for a clever woman to cook without rice, but I really can't figure it out.

    As if knowing the problems Qin Baoshan was considering, Lu Da continued on the sidelines: "Not only does steelmaking need oxygen, but hospitals also need oxygen. As far as I know, there is a factory in Beiping that specializes in the production of medical oxygen.  However, this factory was occupied by the devils after the devils invaded. Only a small part of the oxygen produced in it was used in the medical field, and most of the oxygen was used in the military field. The oxygen used in the little devil's plane is  Made in this factory."

    Oxygen is useful in many places, not only in industry, but also in medicine and weaponry.  The hospital uses oxygen to inhale the dying people, which may delay their death, although it will not completely save their lives, it is delicious to hang their lives for a few more days.  Of course, in this era, only a few people can enjoy this kind of treatment.

    ?Because China's production technology is very backward, even an oxygen cylinder has to be imported from abroad, so it is quite expensive. In hospitals, the oxygen used by many patients actually uses glass bottles.

    In the military field, oxygen is also used a lot, mainly on airplanes.  Pilots fly in the sky. As the altitude increases, the air will become thinner and thinner. Therefore, at an altitude of several thousand meters, the pilots will not be able to inhale enough oxygen, which will lead to hypoxic coma. They must inhale oxygen.

    Many civil aviation accidents are caused by oxygen.  I don¡¯t see the use of oxygen masks when I take a passenger plane, because the entire cabin of the passenger plane is sealed, and the interior is pressurized to maintain a relatively comfortable environment.  But if there is an accident, for example, the seal of the cabin is damaged, the pressure in the cabin is lost, or more simply, a glass is broken, then the cabin will lose pressure.  Pilots are also prone to not breathing enough oxygen due to cabin depressurization and falling into a coma as a result.  By that time, the air crash is almost 100 percent.

    Now, Lu Da has spoken out his thoughts.  Now that he has those metal element analysis equipment, he is confident that he can manufacture the steel needed for the cannon.  But if you want to achieveFor this level of smelting, there must be oxygen.

    "As for the issue of the steel-making furnace, we can find a solution by ourselves, but we need a lot of oxygen. I ask Director Qin to worry about this." Lu Da said.

    "How to solve this problem, it doesn't matter what Director Qin said, it must be approved by senior leaders." At this time, Wei Shuqin from behind spoke.

    Just now, Wei Shuqin had been silently being an audience, but when she heard Lu Da's words, Wei Shuqin's heart began to beat thumpingly.  She naturally knew what Lu Da was trying to express, he wanted Qin Baoshan to go to the capital to Beiping, and get back the equipment there!

    However, it's not Datong or Taiyuan, it's Beiping!  If you want to go to Beiping to move these equipment back, what a risk you need to take.

    It can be said that it is almost a narrow escape.  From a personal point of view, Wei Shuqin certainly didn't want Qin Baoshan to take this risk.  But Wei Shuqin knew how beneficial it would be if these devices could be brought back.

    The military factories of the Eighth Route Army can smelt advanced steel, and even manufacture cannons, so they no longer need the railways used by the devils.  For the Eighth Route Army, this is a major breakthrough!  So Wei Shuqin knew that she couldn't stop her, even if there was a risk, she had to let Qin Baoshan do it.  Of course, whether it can be done or not depends on the leader's intentions. After all, in the eyes of the leader, Qin Baoshan is definitely a talent who needs to be protected. Is it appropriate to let him take risks?  (Remember the site URL: www.hlnovel.com
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