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Chapter 155 If there was it in the country...

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    Experts debate endlessly, and some insist that in order to further improve the refining quality and expand the refining scope, domestic electroslag resmelting furnaces should be technologically transformed.  ¡Ì¨N Another point of view is that it is completely unnecessary. From laboratory research, it is found that although the vacuum environment is indeed effective for refining, the improvement is limited, and the investment is too large. The difficulty of equipment manufacturing has been greatly increased, and the cost performance is extremely low and uncomfortable.  for large-scale promotion.  At first, it was only domestic experts who started the discussion. Later, teachers and technicians who saw that the vacuum electroslag resmelting furnace that could be renovated by military divisions was repeatedly rejected could not help but join in.  Both sides were quarreling and at war with each other, each expounding their own views, and the debate was extremely heated.  "Comrade Guan Fei, in this vacuum electroslag remelting furnace of yours, I feel that the thickness of the slag material is a little too redundant?" Just as everyone was arguing, an old expert from the Chinese Academy of Sciences who did not participate in the dispute  He squeezed to Guan Fei's side with a stern look on his face, pointed at the detection screen, and whispered.  "Oh? Hello, Commissioner Qiao. Do you think there is any problem?" With the help of the biological assistant brain, even though everyone was only introduced once, Guan Fei would not forget the other person's name, unit, and position, and he quickly said politely  , and looked in the direction he pointed, checked the displayed data, and found nothing unusual.  "Is your dripping speed too slow? I feel that the slag layer is too thick, which leads to poor heat transfer and affects the melting speed of the steel." Commissioner Qiao is kind-hearted and speaks tactfully, not directly.  It is said that there is a problem with Guan Fei's design, and the discussion is based on the slag layer alone.  Committee member Qiao is a member of the Chinese Academy of Sciences. He has a very high status among this group of domestic experts and is the focus of everyone's attention.  Although his movements were hidden, many people noticed the changes here and pricked up their ears to listen to the content of their conversation.  Many experts gathered in front of the console looked in the direction he pointed just now, their eyes read the parameters above, and their minds quickly retrieved the data in their memory. When they compared the two sides, they immediately frowned, their expressions on their faces.  It also became serious.  Indeed, the melting speed and dripping speed of molten steel in this vacuum electroslag remelting furnace in the Military Division are too slow!  Taking an ordinary domestic electroslag resmelting furnace as an example, a large 20-ton double-electrode furnace (domestic standard in this era) normally takes three days to refine a furnace of steel.  Using this standard calculation, the speed of molten steel dripping is 70 grams per second.  ???????????????????????????????????????????????????????????????????????????In fact, if 70 grams of molten steel is dripped per second, each drop of molten steel is almost the size of a wine glass.  Continuous dripping will form a stretching water line about five centimeters in diameter, rather than truly dripping drop by drop like in a cave.  We use the standards of ordinary electroslag remelting furnaces, and then look at the vacuum electroslag remelting furnace in the Military Division. We find that although the size of the furnace body has increased and the electrodes have also increased from two to three, the actual dripping speed is actually higher than that in China.  Ordinary electroslag remelting furnaces are even slower.  The amount of molten steel dripping per second is estimated to be only around 60 grams!  ?We are all experts in this field, and we can see at a glance that this data is too outrageous.  At this rate, it will take at least eight days to smelt into a 40-ton steel ingot, which is more than 60% longer than the calculated time!  There must be a problem!  The noisy sounds at the console gradually stopped. Everyone was calculating the data silently in their hearts, and then looked at Guan Fei with doubts and hesitation.  "Is this a major design error?" "Keep your voice down. It can't be said to be a mistake. At least up to now, the molten steel is still seeping out normally. If it melts smoothly, it can only be regarded as a miscalculation, right?" "I'm so envious.  Even if the top person in charge here is held accountable, he will not be held responsible for the same mistake. If it were us, he would definitely be criticized, and he would probably be blamed for causing heavy losses to the country."  I don't know who said something sourly in a low voice.  For some experts, Guan Fei¡¯s design of this vacuum electroslag remelting furnace, which cannot be developed in China, is a negative for their work.  Although seeing its successful operation, everyone still upholds a sense of collective honor and feels proud.  But it is inevitable that there is no strange feeling towards Guan Fei, a layman and a young man. It was difficult for everyone to say it before, and they had no chance to say it. Now that they see that there seems to be a serious error in the design of the vacuum electroslag remelting furnace, some people can't help but say something.  Sarcastic words.  ¡°As he said, this kind of design error will definitely be investigated to the end in China.  If you are unlucky enough to catch the wind, it may not be considered a political incident.  "Don't talk nonsense! It can only be said that the designed production capacity has not been reached. How can you talk?" The colleague next to him glared at him and quietly pulled him into the crowd for protection.  &nbsp"I think you are talking nonsense!" Committee member Qiao, who has been in his early seventies for several years, with a clear face, said loudly and unceremoniously, "Who dares to pat his chest and say that doing research by himself is smooth sailing and he never makes any mistakes?  We have never done anything with a vacuum electroslag resmelting furnace. It is normal that there are some problems in the design! The old man has made some successes in his research, but most of them have failed. Is it possible that the country will arrest me?  , are you treated like a spy? If you have a problem, just talk about it. If anyone talks irresponsibly, get out of here!" With him coming forward, others didn't dare to say anything. They just smiled and let the problem go, and the topic turned to this melting pot.  Why is the melting speed so slow and how to solve it.  "There is nothing wrong with the electrodes. They are produced by our Shangzhong Factory. The same type of electrodes have achieved good melting results in other domestic electroslag remelting furnaces. It is impossible to change them here and it will not work!" A person from Shangzhong Factory  The experts not only sent out possible links to the problem, but also defended their own products.  "Is it a problem with the slag ratio? You see, according to the sensor, the electrode temperature has not dropped. Logically speaking, it should not melt so slowly. Could it be that the slag reduces the thermal conductivity coefficient, making the surrounding steel temperature too low?  Can¡¯t be melted? "Commissioner Qiao also pulled Guan Fei and actively helped him make suggestions to discuss what the problem was.  Guan Fei couldn't interrupt him, so he could only listen to him analyze each item with a smile. When he came to an end, he said: "Commissioner Qiao, what about this? In fact, the melting speed of this furnace is six times per second."  Ten grams, when it was originally designed, it was designed according to this parameter. The data fed back by the sensor now also proves that it is operating normally according to the original design. "You mean it was originally designed like this?"  He raised his head and looked at Guan Fei doubtfully, with a somewhat hesitant expression. ? Seeing Guan Fei¡¯s calm expression, it doesn¡¯t seem like he is trying to cover up his faults and call a deer a horse.  But why does the melting speed of the electroslag remelting furnace slow down when a vacuum shell is added?  Is this a physical and chemical factor, or is it a deliberate control?  What is its purpose?  Commissioner Qiao is willing to believe that Guan Fei is telling the truth, but that doesn¡¯t mean everyone will believe it.  There was a burst of suppressed laughter from the crowd, obviously mocking Guan Fei for his tough mouth. It was obvious that the design was wrong, causing performance degradation, but he still insisted on saying that it should be like this.  After all is said and done, Guan Fei is still too young.  To become a qualified expert in the metallurgical industry, how can one be successful without time and practice.  Guan Fei has delicate skin and a face that is no more than 21 or 21. Some people believe that he is a college student. He does not look like a scientific researcher who often enters the steel plant to collect data and does research in a down-to-earth manner.  It is indeed not easy for him to design a vacuum electroslag remelting furnace. Although I don¡¯t know how he did it, everyone has to give it a thumbs up.  However, this cannot be the reason for him to cover up his faults and turn shortcomings into advantages. He does not have the courage to admit failure. Not admitting mistakes is the biggest problem for a scientific researcher.  Some experts who were originally impressed by him also lost interest in talking to him. They just continued to discuss with familiar colleagues about why the melting speed of this electric furnace was too slow.  Guan Fei is neither angry nor concerned about this.  There is still too little research in this area in China. The only one or two experiments have failed, and the data collected are pitiful.  They do not understand the environmental changes in electroslag remelting furnaces and vacuum electroslag remelting furnaces, which are excusable for the changes in the physical properties of steel melting. ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????:  It doesn¡¯t matter.  Being said a few words by others is a lot of meat.  There is no need to waste your time trying to convince them, wait until the steel ingot is formed and you will come to a conclusion.  With Commissioner Qiao, the two of them had a lot in common, and they had a frank exchange of views on why vacuum electroslag remelting furnaces melt slower than ordinary electroslag remelting furnaces.  During this special period, he no longer insisted on leaving the army in the morning, but directly moved the camp beds to the workshop to monitor the progress of the steel ingot forming at any time.  During the break, he discussed with Commissioner Qiao and other experts who were calm and able to talk fairly.  It is said to be a discussion, but in fact the main thing is that the other party raises questions and he answers them based on his own understanding.  It's just that he has the knowledge stored in the biological secondary brain, and the relevant data is also very complete. Even in areas that he is not familiar with, he can speak clearly.  This had a great impact on the experts who communicated with him. During the discussion, they felt that Guan Fei's theoretical foundation was very solid, and various formulas were explained casually.  When it comes to the changes in various parameters in metallurgy, he blurts it out without thinking, and some of the data are rarely available in the country.??Not even, but the other party was able to analyze everything and was extremely sure, as if this was the fact.  ¡°And after observing the shape of the semi-solidified zone of molten steel in the heavy melting furnace, those who were still laughing at his design error, secretly or openly, also shut their mouths.  In the semi-solidified zone of an ordinary remelting furnace, due to the dripping of a large amount of high-temperature molten steel, a deep pit is formed in the solidified zone under the action of downward shearing force.  However, the semi-condensing zone of this vacuum electroslag remelting furnace in the Military Division is in the shape of a crescent-shaped shallow arc.  The flatter the arc-shaped line, the more uniform the solidification speed of the alloy steel ingot, and the more consistent its internal metallographic phase will naturally be.  The final testing has not yet begun, but most people have already given up.  Combined with the understanding gained from many days of discussions, the attitude of the members of the expert group towards Guan Fei has undergone a 180-degree change.  Even though there are still some people who feel a little sore, they have to admit that Guan Fei's achievements in metallurgy are extremely high, no less than them.  Well, to be fair, maybe, probably, probably even better than them.  As for how much stronger it is, since what he said cannot be verified for the time being, everyone can only listen to it. When he returns to China in the future, he will find an opportunity to conduct experiments to see if he is just talking nonsense or if he has real materials.  Eight days later, the formed steel ingot is extracted and placed in an insulating box to continue maintaining temperature.  Normally, this can be sent for casting or finishing.  However, this time it was just a trial production, using the most basic mold steel formula. In addition, the military district did not have a continuous casting production line for the time being, so only a small part of the steel ingot was cut off, and it was used for analysis after it cooled down naturally.  Most of them are still placed in an insulated box to gradually cool them down.  ¡­ ¡°Is this the test data?¡± Chairman Qiao¡¯s hands covered with age spots were holding the test report handed over tightly. He read it again and again. During this period, he took off his reading glasses several times and wiped them back and forth several times before putting them on.  , back and forth several times.  "You can't blame him for losing his composure. The test results were really beyond his expectation."  The test report clearly shows that the physical properties of the steel ingots refined by the military division significantly exceed the best data of mold steel refined in domestic electroslag remelting furnaces!  Among them, the various gas components that are most difficult to remove in electroslag resmelting furnaces are very small in the refined steel ingots of military divisions, and are almost absolutely pure!  Actual use tests have shown that molds made from traditional electroslag remelting furnace steel ingots can be used approximately 30,000 times without the need for mold repair.  However, the mold steel refined by the military division can guarantee a service life of 130,000 times without mold repair, which is more than three times higher!  ??Through the impact test, the maximum impact force that the military refined mold steel can withstand reaches 500 joules per square centimeter, while the normal electroslag remelting furnace only has 300, an increase of 66.6%!  This, this, is simply contrary to heaven!  Commissioner Qiao¡¯s hands were trembling, and he was holding on to this thin report, refusing to let go of it no matter what.  Such a good thing, even if you risk your life, you have to move it back to the country!  With this vacuum electroslag remelting furnace, domestically manufactured engines can withstand higher pressure, have more power, and fly faster; With this vacuum electroslag remelting furnace, domestically manufactured armor can withstand higher pressures at the same thickness.  It will be stronger, the barrel can withstand higher chamber pressure, and the penetration force will be stronger; With this vacuum electroslag remelting furnace, the domestically made bearings will be more wear-resistant, and the power spindle will be stronger and higher in toughness  , thereby creating more durable and precise machine tools; If there were this vacuum electroslag remelting furnace in China
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