Before long, Zhao Guoyang saw the entire process of secondary smelting.

Secondary smelting, also known as outside furnace refining in the industry, is a complementary relationship with continuous casting technology.

The application of continuous casting technology was no longer a complicated process in the 1990s. Most steel types could be produced by continuous casting technology.

However, the joint movement of secondary smelting and continuous casting technology is still extremely rare in the country.

There are many advantages of secondary smelting. In addition to high efficiency, it can also provide steel with uniform temperature, accurate alloy composition and high purity, which significantly improves the internal slag inclusion, pores, and central segregation of the continuous casting billet.

The secondary smelting technology of Shagang Group has obviously mastered the essence.

In Zhao Guoyang's opinion, it is basically not much different from the process he learned about in his previous life.

Chen Guolin, who was observing the entire process, did not forget to explain to Zhao Guoyang: "Researcher Zhao, what we are seeing now is the continuous casting process after the secondary smelting. Look at the decarbonization and degassing vacuum smelting, and it will be released soon..."

Zhao Guoyang nodded and agreed with Minister Chen's words.

However, after seeing that the steel was slowly cooling down but immediately entering the secondary heating state, Zhao Guoyang couldn't help but frown.

Chen Guolin had been paying attention to Zhao Guoyang's expression. At this time, Chen Guolin was stunned when he saw his brows slightly locked.

"Researcher Zhao, do you think there is something wrong with it?" he couldn't help but ask.

Zhao Guoyang exhaled a breath of turbid air and 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 cast embryo."

"Ah?" After hearing this, Xia Chunming was a little confused at the time.

He didn't know the origin of Zhao Guoyang, so he felt that this young man seemed to be exaggerating.

Xia Chunming sneered in his heart and said calmly: "Researcher Zhao, right? Did you see the problem so quickly? It's amazing."

"So, can you explain to everyone what's going on, so that we can gain some knowledge..."

Zhao Guoyang could naturally hear what Director Xia meant. His meaning was: If you call me a researcher, you really think that you are so capable. What can you young man know? It's just to attract attention.

This person said that he wanted Zhao Guoyang to let everyone know him, but in fact he didn't believe that Zhao Guoyang could tell him that he was ugly.

Facing Xia Chunming's doubts, Zhao Guoyang was very calm and said lightly: "Director Xia, don't worry about this. I will definitely explain it to you later. However, this batch of cast embryos is about to be released. Let's see if there is still a problem 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 cast embryos!"

When Zhao Guoyang said this, Lao Zhu, a senior operator over there, was a little unhappy.

He just operated this process personally from beginning to end, and he didn't let Xiao Guan do it again.

If there is still a problem with the cast embryo released this time, wouldn’t it be like slapping yourself in the face?

Thinking of this, Lao Zhu groaned and said, "Hmph, I don't have much of the same view as this researcher Zhao. I think this embryo casting will definitely be qualified!"

When Zhao Guoyang heard this, he just smiled and did not argue with him.

In his opinion, facts are better than words. After the casting is released later, it can be explained at a glance.

Soon, the cast embryo after cooling was officially released, and Director Xia, Lao Zhu and others also surrounded him.

"Look, I'm talking about it. This time I'll do it myself, so there's no problem!" Lao Zhu glanced at the cast embryo and said with a proud look.

Zhao Guoyang, who was watching coldly, coughed without saying anything, raised his hand and pointed at one of the less conspicuous places in the casting embryo.

Everyone looked in the direction of his fingers and saw a faint crack on the casting embryo.

"Ah! How could this be like this!" Seeing this crack, Lao Zhu's face suddenly collapsed.

Xia Chunming's face next to him also turned blue and red, and I don't know what to say.

As for Xiao Guan, a young worker who was wronged before, he looked at Zhao Guoyang with admiration and was very grateful to him for helping him clear his grievances.

At this moment, the situation is already very clear.

Obviously, what Zhao Guoyang just said is right. There is indeed something wrong with the secondary smelting process of Shagang Group.

After a while, everyone gradually recovered.

Chen Guolin suppressed the suspicion in his heart, turned to look at Zhao Guoyang and said, "Researcher Zhao, I am really impressed by your foresight now. Tell us quickly, what exactly is the cause of these cracks?"

Zhao Guoyang nodded gently, pointed to the cast embryo in front of him, and explained in detail: "That's right. If I remember correctly, the carbon content of these three steels q345, q235, 20 should be within the range of 0.17 to 0.24, Master Zhu?"

Seeing Zhao Guoyang's gaze coming, the muscles on the old Master Zhu's face trembled.

He replied with some clues, "Yes, Researcher Zhao, you are right. The carbon content of these three materials is roughly in this range, which is considered to be relatively high in steel..."

Zhao Guoyang nodded and continued to explain: "Master Zhu is right. Due to the excessive carbon content, in the metallurgy process of these three steels, an incrystal structure is sometimes prone to appear."

"After this structure appears, the sensitivity to cracks inside the steel increases, and cracks are easily left on the casting embryo."

Zhao Guoyang paused and continued: "So, during the secondary smelting process, we must pay attention to the adjustment of temperature and water volume, and also control the recovery of the surface temperature of the casting billet."

Speaking of this, Zhao Guoyang said to Xia Chunming: "I just saw Master Zhu's movements were very skillful, but this process cannot be handled by one person."

"Master Zhu needs an assistant to pay attention to the changes in temperature and water volume at any time. In this way, the temperature of the casting surface can be avoided."

"It's like when Master Zhu was just concentrating on the second smelting, Master Xiao Guan could help him observe the changes in temperature and water volume, so that he could basically be foolproof!"

After Zhao Guoyang finished speaking, everyone showed a sudden enlightenment.

Xia Chunming was the most active. He made a gesture to Lao Zhu and said, "Hurry, 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 these three basic steels! Maybe Director Shen will reward us after we know that our production process has been improved and optimized!"

As soon as they heard that there was a reward, Lao Zhu and Xiao Guan immediately became energetic.

The two looked at each other, and Lao Zhu said to Xiao Guan: "Xiao Guan, I will control the secondary smelting this time. Come and help me control the temperature and water volume! Is it OK? Let's see this!"

"No problem, Master Zhu, wrap it up with me!" Listening to the master's attitude towards him changed, Xiao Guan was as sweet as eating honey.

When the two started the second round of smelting step by step, Xiao Ruoyu couldn't help but come to Zhao Guoyang and whispered to him: "Damn, Guoyang, you are too mysterious, right? You know so much about my current professional steel smelting? Do you still let people live!"

Zhao Guoyang pushed Xiao Ruoyu with his elbow, lowered his voice and said, "Don't leave the main text, take a good look at how the two masters in the workshop made steel."

There is basically no suspense about what follows.

As the newly released batch of cast embryos cooled down, everyone could no longer find any cracks on it.

After confirming again, Xia Chunming sighed when he looked at Zhao Guoyang.

He shook hands with Zhao Guoyang a little apologized and said, "Researcher Zhao, you are so awesome, you are simply my idol!"

When Zhao Guoyang heard this person's words like crosstalk, he felt a little embarrassed.

"Director Xia, you are too rewarding. In fact, this kind of industrial technology is not complicated. You only need to send someone to help from the side."

"Haha, no matter what, Guoyang, you really helped our Shagang Group in this matter today. Looking back, I must come to our Director Shen and apply for a technical improvement reward for you. Be sure to ensure that you can get a bonus!" Chen Guolin couldn't help but interrupt and said.

"If you have a bonus, you don't have to."

Zhao Guoyang laughed disconcertedly and said, "Actually, I just came up with an idea. The real solution to the problem is Master Zhu and Master Xiao Guan, and I dare not take credit."

Everyone saw that Zhao Guoyang's words were not like fake, and they were all a little strange at the moment.

Chen Guolin's eyes were admiration, and Xia Chunming's eyes were surprised and relieved.

As for Xiao Ruoyu, he stared at Zhao Guoyang with a sad look for a while, which made Zhao Guoyang think he had some illness.

Until the end of the visit, Xiao Ruoyu couldn't help but pull Zhao Guoyang aside to ask.

"Guoyang, I said, have you read too many books and become stupid. The rewards for technological improvement in our factory are quite expensive, with four-digit bases and five-digit bases as well."

Listening to Xiao Ruoyu's complaints, Zhao Guoyang waved his hand to him without saying anything.

...

The evening banquet was held on the top floor of Shagang Group Hotel.

After hearing Chen Guolin's jealousy, Director Shen held Zhao Guoyang's hand and praised him after hearing what happened in the workshop in the afternoon.

Finally, he confirmed the approximate time of meeting next time with Zhao Guoyang, and asked him to come over as soon as possible, regardless of whether there is any news on the niobium tantalum ore ore.

Zhao Guoyang naturally agreed to Director Shen’s invitation.
Chapter completed!