Experts argue endlessly, and some people insist that in order to improve the refining quality and expand the refining range, the domestic electroslag remelting furnace should be technologically transformed. www.biquge.info√From laboratory research, it was found that although the vacuum environment is effective for refining, the improvement is limited, and the investment is too large, the difficulty of equipment manufacturing has been greatly improved, and the cost performance is very low, which is not suitable for large-scale promotion.

At first, it was only domestic experts who were discussing, and later teachers and technicians who saw that the vacuum electroslag remelting furnace that could not be transformed by the military division was repeatedly denied could not help but add it. The two sides were arguing with each other and expounding their own views, and the arguments were extremely fierce.

"Comrade Guan Fei, in your vacuum electroslag remelting furnace, I feel that the thickness redundancy of the slag is a little bigger?"

Just when everyone was arguing, an old expert of the Chinese Academy of Sciences, who did not participate in the dispute, squeezed to Guan Fei's side with a solemn face, pointed to the detection screen, and said in a low voice.

"Oh? Hello, Commissioner Joe. Do you think there is a problem? With the assistance of the biological auxiliary brain, even if everyone only introduced it once at the beginning, Guan Fei would not forget the other party's name, unit, and position, and hurriedly said politely, and looked in the direction he pointed, checked the displayed data, and found nothing abnormal.

"Isn't your dripping speed too slow? I think it should be because the slag layer is too thick, which leads to poor heat transfer and affects the melting rate of the steel. Committee member Qiao was kind-hearted and spoke very tactfully, without directly saying that there was a problem with Guan Fei's design, and only discussed the slag layer on a case-by-case basis.

Committee member Qiao is a member of the Faculty of the Chinese Academy of Sciences, and he has a very high status among this group of domestic experts and is the focus of attention. Although his movements were hidden, there were still many people who 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 just pointed, read the above parameters with their eyes, and quickly extracted the data in their memories in their brains.

Indeed, the melting speed and dripping speed of molten steel in this vacuum electroslag remelting furnace in the military division are too slow!

Taking the domestic ordinary electroslag remelting furnace as an example, a 20-ton large-scale double-electrode furnace (the domestic standard of this era) takes three days to refine a furnace of steel normally.

According to this standard, the speed at which molten steel drips is 70 grams per second.

Everyone verbally says that it is dripping, but in fact, if 70 grams of molten steel are dripped every second, each drop of molten steel is about the size of a wine glass. The continuous dripping will form a continuous line of water with a diameter of about five centimeters, rather than really dripping drop by drop like a cave.

We use the standard of ordinary electroslag remelting furnace, and then look at the vacuum electroslag remelting furnace in the military division, but find that although the size of the furnace body has increased and the electrodes have increased from two to three, the actual dripping speed is slower than that of ordinary domestic electroslag remelting furnaces.

The amount of molten steel dripping per second is estimated to be only around 60 grams!

Everyone is an expert in this area, and it can be seen at a glance that this data is outrageous.

At this rate, it would take at least eight days to smelt into a 40-ton ingot, which is more than 60 percent more than the calculated time!

There must be a problem!

The noisy sound on the side of the console gradually stopped, and everyone silently calculated the data in their hearts, and then looked at Guan Fei with doubts and hesitation.

"This is a major design error, right?"

"Be quiet, it can't be said to be a mistake, at least until now, the molten steel is still seeping normally. If it melts smoothly, it can only be regarded as a miscalculation, right? ”

"I'm really envious, he is the highest person in charge here, even if he is held responsible, he can't be held accountable. The same mistake, if we were to be criticized, would be affirmed, and most of the hats that caused heavy losses to the country would have been buckled. In the cracks, I don't know who whispered a sour word.

For some experts, Guan Fei's design of this vacuum electroslag remelting furnace that cannot be developed in China is a denial of their work. Although seeing its successful operation, everyone still upholds a sense of collective honor and honor. But it is inevitable that there is no strange mood for Guan Fei, a layman and a young man, before everyone was not easy to say, and there was no chance to say it, but now seeing that there seems to be a serious mistake in the design of the vacuum electroslag remelting furnace, some people can't help but say something sarcastic.

As he said, this kind of design mistake must be investigated to the end in China. If you are unlucky and run into the wind, it may not be considered a political event.

"Don't talk nonsense! It can only be regarded as not reaching the design capacity, how do you speak? His colleague glared at him and quietly pulled him into the crowd for protection.

"I think you're talking nonsense!" Committee member Qiao is already in his early seventies for a few years, his face is clear, and he said loudly and unceremoniously, "Who dares to pat his chest and say that it is smooth sailing to conduct research on his own, and he has never made a mistake?" We haven't done a vacuum electroslag remelting furnace before, and there is something wrong with the design, which is normal! In his life, the old man has been successful in his research, but more often than not. Could it be that the state has arrested me and treated me as a spy? If there is a problem, talk about the problem, and whoever is irresponsible and nonsense again, get out of here! ”

With him in the background, others didn't dare to say anything, so they smiled and let go of the problem, and the topic turned to why this furnace was melting so slowly and how to solve it.

"There is no problem with the electrode, which is produced by our Shangzhong factory. The same type of electrode has achieved good melting effect in other electroslag remelting furnaces in China, and it is impossible to change it here! An expert from a heavy factory is not only to send out possible problems, but also to defend his own products.

"Is it a problem with the slag formula ratio? You see, according to the sensor display, the electrode temperature has not decreased, it stands to reason that it should not melt so slowly, could it be that the slag material reduces the thermal conductivity coefficient, so that the temperature of the surrounding steel is too low to melt? ”

……

Committee member Qiao also pulled Guan Fei and actively helped him make suggestions and discuss where the problem was.

Guan Fei couldn't interrupt him, so he could only listen to him break down and analyze them one by one with a smile, and waited until he was done before he spoke: "Commissioner Qiao, what about this, in fact, the melting speed of this furnace is sixty grams per second, and when it was originally designed, it was designed according to this parameter." Now the data fed back by the sensor also proves that it is operating normally according to the original design. ”

"That's how it was designed, you mean?" Commissioner Qiao blinked, raised his head, and looked at Guan Fei suspiciously, his expression a little hesitant.

Seeing Guan Fei's calm expression, he didn't seem to be pretending to be a deer and a horse.

But why does the addition of a vacuum shell slow down the melting speed of the electroslag remelting furnace? Is this a physicochemical factor, or is it intentionally controlled?

What is its purpose?

Committee member Qiao is willing to believe that Guan Fei is telling the truth, but it does not mean that everyone will believe it. There was a burst of suppressed laughter in the crowd, obviously laughing at Guan Fei's dead duck's hard mouth, obviously the design was wrong, causing the performance to decline, but he still insisted that it should be like this.

Speaking of which, Guan Fei is still too young.

To become a qualified expert in the metallurgical industry, how can it be successful without time for experience and polishing. Guan Fei's delicate skin and face are only twenty-one and twelve, and some people believe that he is a college student, and he doesn't look like a scientific researcher who often enters the steel plant to collect data and do 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, but everyone has to pick a thumbs up. However, this cannot be a reason for him to cover up his mistakes and turn his shortcomings into advantages, because he does not have the courage to admit defeat, and not admitting mistakes is the biggest problem of a scientific research worker.

Some experts who had been impressed with him also lost interest in talking to him, and just continued to discuss with their familiar peers why the melting speed of this electric furnace was too slow.

Guan Fei was neither angry nor concerned about this.

There are still too few studies in this area in China, and the only one or two experiments have failed, and the data collected is pitiful. They do not understand that the environmental changes in electroslag remelting furnaces and vacuum electroslag remelting furnaces are excusable for the changes in the physical properties of steel melting.

To say that he is wrong is just to hold on to his own inherent thinking and try to point fingers at him with the mentality of academic authority.

It doesn't matter.

was said by others, and there were a lot of pieces of meat. Don't waste your tongue trying to convince them, wait until the ingot is formed, and the decision will be your own.

However, with Committee member Qiao, the two had a lot of common language, and had a frank exchange on why the melting speed of the vacuum electroslag remelting furnace is slower than that of the ordinary electroslag remelting furnace.

During this special period, he did not insist on getting off the army in the morning, but directly moved the marching beds to the workshop to monitor the progress of the steel ingot forming at any time.

In the interval, he held discussions with Committee member Qiao and other experts who were calm and able to talk fairly. It is said that it is a discussion, but in fact, it is mainly the other party who asks questions, and he answers them according to his own understanding. It's just that he has the knowledge stored by the biological side brain, and the relevant data is also very complete, even if it is a field that he is not familiar with, he can speak the truth.

This had a great impact on the experts who communicated with him, and during the discussion, they felt that Guan Fei's theoretical foundation was very solid, and the formulas were casually explained. When it comes to the changes in various parameters in metallurgy, he also blurted out, almost without thinking, some data are very little or even no in China, but the other party can analyze one, two, three, extremely certain, as if this is the case.

And after observing the shape of the semi-solidified zone of molten steel in the remelting furnace, those who were still laughing openly and secretly at his design mistake also kept their mouths shut.

In the semi-solidification zone of ordinary remelting furnace, a deep pit is formed in the solidification zone due to a large amount of high-temperature molten steel dripping and down-shear force. However, the semi-condensation area of this vacuum electroslag remelting furnace in the military division is in the shape of a crescent-shaped shallow arc. The flatter the arc line, the more uniform the solidification speed of the alloy steel ingot, and the more consistent the internal metallographic is naturally there.

The final tests have not yet begun, but most people are already reluctant.

Combined with the understanding of the multi-day discussion, the attitude of the members of the expert group towards Guan Fei has changed 180 degrees.

Even if there are still some people who are slightly pantothenic in their hearts, they can't help but admit that Guan Fei's achievements in metallurgy are extremely high, no less than them. …… Well, to be fair, maybe, probably, probably better than them.

As for how much stronger, since what he said cannot be verified for the time being, everyone can only listen to it in vain, and when he returns to China in the future, he will find an opportunity to do experiments to see if he is talking nonsense or has real materials.

After eight days, the formed ingots are extracted and placed in an incubator to maintain the temperature.

Normally, this can be sent for casting or finishing. However, this time it was only a trial production, using the most basic mold steel formula, and the military division did not have a continuous casting production line for the time being, so only a small part of the steel ingot was cut and used for analysis after it was naturally cooled. Most of them are still put into the incubator and gradually cooled down.

……

"Is this test data?"

Chairman Qiao's hands were full of age spots, clenched the test report handed over, looked at it again and again, and took off his reading glasses several times during the period, wiped them back and forth several times, and then put them on, back and forth several times.

He can't be blamed for his gaffe, but the test results are too unexpected for him.

The test report clearly indicates that the physical properties of the refined steel ingots in the military division greatly exceed the best data of the die steel refined by the domestic electroslag remelting furnace!

Among them, the various gas components that are most difficult to remove in the electroslag remelting furnace are very small in the refined steel ingots of the military division, and they are almost absolutely pure!

In actual use tests, the mold made of steel ingots in the traditional electroslag remelting furnace can be guaranteed to be about 30,000 times without mold repair. However, the mold steel refined by the military division can ensure the service life of 130,000 times without mold repair, which is more than three times!

Through the impact test, the maximum impact force that the refined die steel of the military division can withstand reaches 500 joules per square centimeter, and the normal electroslag remelting furnace is only 300, an increase of 66.6 percent!

This, this, it's just against God!

Committee member Qiao's hands were trembling, clutching this thin report tightly, saying that he would not let go of anything.

Such a good thing, even if you fight for this old life, you have to move back to China!

With this vacuum electroslag remelting furnace, the domestically made engine can withstand higher pressure, more power and fly faster;

With this vacuum electroslag remelting furnace, domestically made armor will be stronger at the same thickness, and the barrel will be able to withstand higher chamber pressure and have stronger penetration;

With this vacuum electroslag remelting furnace, the domestically made bearings will be more wear-resistant, and the power spindle will be stronger and tougher, so as to create more durable and precise machine tools;

If there is this vacuum electroslag remelting furnace in China......