It didn't take long for Zhao Guoyang to see the whole process of secondary smelting.
Secondary smelting, also known as off-the-furnace refining in the industry, is complementary to continuous casting technology.
The application of continuous casting technology is not too complicated in the nineties, and most of the steel grades can be produced by continuous casting technology.
However, the joint movement of secondary smelting and continuous casting technology is still extremely rare in China.
The advantages of secondary smelting are many, in addition to high efficiency, it can also provide uniform temperature, accurate alloy composition, high purity of molten steel, so that the internal slag inclusion, porosity, central segregation and other defects of the continuous casting billet have been significantly improved.
In front of us, the secondary smelting technology of Shagang Group has obviously mastered the essence.
In Zhao Guoyang's view, it is basically not much different from the process he understood in his previous life.
When Chen Guolin on the side observed the whole process, he did not forget to explain to Zhao Guoyang: "Researcher Zhao, what we see now is the continuous casting process after the secondary smelting, you see that these molten steel are being decarburized and degassed in a vacuum smelting, and they will be baked soon."
Zhao Guoyang nodded and agreed with Minister Chen's words.
However, after seeing that the molten steel was slowly about to cool down, but immediately entered a state of secondary heating, Zhao Guoyang couldn't help frowning.
Chen Guolin has been paying attention to Zhao Guoyang's demeanor, and seeing his brows slightly locked at this time, Chen Guolin was stunned.
"Researcher Zhao, do you think there's anything wrong with that?"
he couldn't help but ask.
Zhao Guoyang exhaled a breath of turbidity, nodded to Chen Guolin and Xia Chunming beside him, and said, "Minister Chen, Director Xia, I think I have found the problem of cracks on the casting embryo." ” "Ah" Hearing this, Xia Chunming was a little confused.
He didn't know where Zhao Guoyang came from, so he felt that this young man seemed to be exaggerating.
Xia Chunming sneered in his heart, and said quietly: "Researcher Zhao, it's amazing that you can see the problem so quickly." ” "So, can you explain to the big guys what is going on, so that we can learn a little more?"
Zhao Guoyang could naturally hear the meaning of Director Xia's words, what he meant was to say: How capable you are to call you a researcher to be a researcher, what can you know as a young man, it's just grandstanding.
This said that he wanted Zhao Guoyang to let everyone know, but in fact, he didn't believe that Zhao Guoyang could say that he was ugly.
In the face of Xia Chunming's questioning, Zhao Guoyang was very calm, and said lightly: "Director Xia, this is not in a hurry, I will definitely explain it to you later, but now this batch of casting embryos is about to be baked, let's see if there are still problems with them." ” Looking at the puzzled look on Xia Chunming's face, Zhao Guoyang added: "According to my estimate, there are still problems with this batch of casting embryos."
When Zhao Guoyang said this, Lao Zhu, the senior operator over there, was a little unhappy.
He operated this process from beginning to end just now, and he didn't let Xiao Guan do it again.
If there is still a problem with the casting embryo that came out this time, it will be tantamount to slapping yourself in the face After thinking about this, Lao Zhu snorted and said, "Hmph, I don't have the same opinion as this researcher Zhao.
I think this casting embryo will definitely be qualified."
When Zhao Guoyang heard this, he just smiled and didn't argue with him much.
In his opinion, facts speak louder than words, and after the embryo is baked later, a glance will explain the problem.
Not long after, the casting embryo after the completion of cooling was officially baked, and Director Xia, Lao Zhu and others also surrounded the past.
"Look, I'm talking about it.
This time I'll do it myself, and I'll definitely be fine," Lao Zhu glanced at the casting embryo and said with a full sense of conceit.
Zhao Guoyang, who was watching coldly, coughed, didn't say anything, and raised his hand to one of the less conspicuous positions of the casting embryo.
Everyone looked in the direction of his finger, and sure enough, they saw a faint crack on the casting embryo.
"Ah, how can this be" Seeing this crack, Lao Zhu's face suddenly fell.
Xia Chunming's face next to him was also blue and red for a while, and he didn't know what to say.
As for Xiao Guan, a young worker who had been wronged before, he looked at Zhao Guoyang with admiration and was very grateful to him for helping him wash away his grievances.
At this moment, the situation is already clear.
Obviously, what Zhao Guoyang just said was right.
There is indeed something wrong with the secondary smelting process of Shagang Group.
After a while, everyone gradually came to their senses.
Chen Guolin endured the doubts in his heart, turned his head to look at Zhao Guoyang and said, "Researcher Zhao, I am really a five-body cast on your prophetic prescience now.
Tell us what causes these cracks."
Zhao Guoyang bowed his head slightly, pointed to the casting embryo in front of him, and explained in 1510: "That's the case, if I'm not mistaken, the carbon content of Q345, Q235, and 20 should be within the 017024 range, Master Zhu."
Seeing Zhao Guoyang's gaze coming over, the muscles on the old Master Zhu's face trembled.
He replied with some confusion: "Yes, Researcher Zhao, you are right.
The carbon content of these three materials is roughly in this range, which is relatively high among steels."
Zhao Guoyang nodded and continued to explain: "Master Zhu is right, due to the high carbon content, in the metallurgical process of these three types of steel, sometimes it is easy to have a clad crystal structure. ” "After the emergence of this structure, the sensitivity to cracks inside the steel increases, and it is easy to leave cracks on the casting embryo."
Zhao Guoyang paused and continued: "Therefore, in the process of secondary smelting, we must pay attention to the adjustment of temperature and water quantity, and also control the temperature rise of the surface temperature of the casting billet. ” Speaking of this, Zhao Guoyang said to Xia Chunming: "When I watched Master Zhu's operation just now, his movements were very skillful, but this process is not something that one person can do. ” "Master Zhu needs an assistant to keep an eye on the temperature and water volume changes.
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In this way, the temperature of the surface of the casting embryo can be avoided. ” "It's as if when Master Zhu was just engrossed in the second smelting, Master Xiaoguan could assist him in observing the changes in temperature and water quantity, so that he could basically be foolproof."
After Zhao Guoyang's words were finished, everyone showed a look of sudden realization.
Xia Chunming was the most active, and he made a gesture directly to Lao Zhu and said, "Hurry up, Lao Zhu."
According to the method taught by Researcher Zhao, let's try again. ” "If this problem can be solved, it will be a great benefit to the production of our three basic steels, maybe, after the director of the factory knows that our production process has been improved and optimized, he will reward us."
As soon as they heard that there was a commendation, Lao Zhu and Xiao Guan immediately came to the spirit.
The two glanced at each other, and Lao Zhu said to Xiao Guan: "Xiao Guan, this time I will control the secondary smelting, you can help me control the temperature and water volume, let's see what happens."
"No problem, Master Zhu, wrap it on me" Listening to the master's attitude towards himself, his attitude changed, and his little concern was as sweet as eating honey.
When the two of them started the second round of smelting step by step, Xiao Ruoyu couldn't help but come to Zhao Guoyang's side and whispered to him: "Damn, Guoyang, you guy is too mysterious, even my current professional steel smelting, you know so much and don't let people live."
Zhao Guoyang pushed Xiao Ruoyu with his elbow, lowered his voice and said, "You kid, don't have a text, take a good look at how the two masters in the workshop make steel." ” What follows, there is basically no suspense.
As the newly baked batch of casting embryos cooled, everyone couldn't find a single crack on it.
After confirming again, Xia Chunming sighed when he looked at Zhao Guoyang.
He shook hands with Zhao Guoyang a little apologetically and said, "Researcher Zhao, you are too powerful, you are simply my idol."
Listening to this crosstalk-like words, Zhao Guoyang felt a little embarrassed.
"Director Xia, you are too awarded, in fact, this kind of industrial technology is not complicated, you only need to send a special person to assist from the side."
"Hehe, no matter what, Guoyang, you really helped us a lot in today's matter.
Looking back, I will definitely go to our director of the factory and apply for a technical improvement award for you, and I must ensure that you can get a bonus," Chen Guolin couldn't help but interject.
"If it's a bonus, you don't have to."
Zhao Guoyang smiled disappreciatively and said, "Actually, I just came up with an idea."
It was Master Zhu and Master Xiaoguan who really solved the problem, and I didn't dare to take credit. ” Everyone saw that Zhao Guoyang's words did not seem to be fake, and they were all a little strange at the moment.
Chen Guolin's eyes were appreciative, and Xia Chunming's eyes were surprised and relieved.
As for Xiao Ruoyu, he stared at Zhao Guoyang with a sad look for a long time, which made Zhao Guoyang think that he was sick of something.
Until the end of the visit, Xiao Ruoyu couldn't help but pull Zhao Guoyang aside to ask.
"Guoyang, I said that you have read too many books and become stupid.
The amount of technical improvement rewards in our factory is very expensive, with a four-digit base and a five-digit base. ” Listening to the complaint in Xiao Ruoyu's words, Zhao Guoyang waved his hand at him and didn't say anything.
The banquet in the evening was held on the top floor of the Shagang Group Hotel.
After listening to Chen Guolin's words about what happened in the workshop in the afternoon, Director Shen held Zhao Guoyang's hand with a burst of praise.
In the end, he confirmed the approximate time of the next meeting with Zhao Guoyang, and asked him to come over and have a good chat as soon as possible, regardless of whether there is news from the niobium-tantalum mine.
For Director Shen's invitation, Zhao Guoyang naturally agreed happily.
For a while, the atmosphere on the wine table also became more harmonious: