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Chapter 129 Stainless Steel Production Process

The establishment of diplomatic relations between China and the United States and the suspension of shelling Kinmen were an exciting topic for Qi Jinsong. Others were talking about the dishes on the table, but he talked endlessly about his views on these two things, single analysis, joint digging, vertical comparison, and horizontal association, and almost spitting.

Qin Wenbo sighed after eating a shrimp, "Jianhua, in the future, you can only cook one-fifth of this one. Eat less and have more flavor, and you don't have to listen to this guy's noise... Jinsong, if there weren't so many dishes, you wouldn't be so calm, right?"

Long Jianhua asked Qi Jinsong, "You great poet, do you have any friends in another school? You can help me borrow a book loan certificate, which will take up to one week."

Qi Jinsong hurriedly said, "Yes! Renda University and Guoda University have them. Where do you think you can borrow them?"

Long Jianhua nodded, "You are from the University of Technology. You are only half a month away from the holiday, and you also have to prepare for the final exam, which will not delay others."

Zhao Hongying asked, "Since you want to read books, your uncle has so many schools, just go there to read, why do you have to go to other schools?"

Long Jianhua smiled and shook his head, "Uncle's school can go to see it at any time, but other schools are different. You can only go to see it at the end of the period, which will not affect others' borrowing of books."

Long Haojun took out a stack of paper from his clothes and handed it to him, "Jianhua, these are some ideas for me to improve the stainless steel production process. Please help me with the staff."

Long Jianhua took it and read it quickly for two pages and smiled, "Okay, I happened to be taking the task to read the book."

Qi Jinsong opened his eyes wide and looked at Long Jianhua, then turned to look at Long Haojun, and then looked at Long Jianhua, "Jianhua, do you even understand this?"

Long Jianhua chuckled, "Who said I understand? Isn't this a task assigned to me by my uncle? I just happened to use the time I read the book to study these things. I can only let you learn, so I won't be allowed to learn too?"

Qi Jinsong shook his head into a rattle, "It's not that you are not allowed to study, but that your study surprised me too much. Uncle is an associate professor, the world's cutting-edge science you are studying, you actually have the courage to help your uncle advise... you are so bold."

Uncle and others laughed without saying a word, drinking and eating vegetables leisurely...

After having a meal and having fun for a while, Qin Wenbo and Qi Jinsong went shopping. Yunyan took Yuehua and Yuehe to her courtyard to play, while Zhao Hongying took on the task of washing dishes, and only Long Jianhua and his nephew sat on the sofa.

After Long Jianhua finished reading the plan, Long Haojun asked lightly, "How is it?"

Long Jianhua shook his head, "I don't know what the current production process is like, so I can't give any comments on this... However, I have some ideas..."

In fact, when looking at this plan, a large number of stainless steel production processes and formulas emerged in his mind, but in front of Long Haojun, he couldn't say it.

Long Haojun rubbed his face and introduced the domestic stainless steel situation to him.

The domestic stainless steel industry has a weak foundation. Only special steel mills produce a small amount of stainless steel. Only thirteen standards have been included, including only 65 brands. Neither quantity, quality nor varieties can meet the needs, and the scope of use is also very limited.

In addition to formula problems, backward production process is also a very important reason.

In 1968, the world's first AOD furnace (argon-oxygen refining furnace) was built in the United States. This AOD furnace does not require vacuum, has small equipment investment, is simple to operate, and has a fast decarbonization speed. It does not require pre-decarbonization in the electric furnace. It can replace argon with cheap nitrogen, which further reduces the cost.

In the 1950s, Demand tried to refine liquid steel under normal pressure, and developed a simple DH method and RH method with a simple process. After introducing these two technologies, the island Japan developed the technology of blowing oxygen into a vacuum tank, established a process for combining oxygen converters and RH-OB, and was produced in industrialized in 1972;

Some domestically have adopted Elu furnaces, while others are still using high-frequency induction furnaces...

After listening to the introduction, Long Jianhua laughed and said, "Uncle, since he has developed the AOD furnace, why do we still need to study AOD based on VOD, not directly research AOD, or conduct research on this basis?"

Long Haojun glared at him, "I just want to run without even learning to leave. Are you afraid of falling?"

Long Jianhua laughed and said, "Uncle, I have read a lot of books and journals during this period. Some basic journals have generally mentioned AOD. I calculated it and felt that AOD was just that..."

At this time, Zhao Hongying walked in and said loudly, "Jianhua, I have to help him. During this period, he has been crazy and often stayed up until two or three o'clock. Apart from reading, he is working on this plan."

Long Jianhua chuckled.

He knew that domestic technology has been blocked for too long, and the same is true for stainless steel production.

In August 1968, two sets of 50-ton converter steelmaking equipment were introduced from Osley; in March 1970, a complete set of cold-rolled stainless steel equipment was introduced from Demand. As for production and refining technology, I have been relying on my own exploration for the past ten years and have made little progress.

The domestic AOD furnace was not put into production until September 1983, and it only had a processing capacity of 18 tons, which had been left behind for more than ten years.

But with someone who can intercept the truth, these things will catch up soon.

Long Jianhua took out a stack of straw paper and quickly wrote it, and soon filled sixteen pages, "Uncle, this is what I thought of, take a look."

Long Haojun took the straw paper and became more and more excited as he looked at it. He kept beating on the table with his hands.

"This works!"

“This is wonderful!”

"Why didn't I expect to do this?"

"This view is up to be discussed, but there is nothing wrong with it in theory, you can try it!"...

Zhao Hongying looked at Long Haojun with a flushed face. Every time she wanted to pat him, her hand that had just reached out shrank back.

After reading Long Jianhua's plan, Long Haojun grabbed the straw paper tightly, "Jianhua, you mentioned a stainless steel formula later. Where did you get it?"

Long Jianhua laughed and said, "This 3Cr12 ferrite-martensite stainless steel is a product produced by Nanfei in the second half of the year before yesterday. It is said to be the steel with the highest strength level, and it is wear-resistant and corrosion-resistant, so I pushed it, but it may not be correct."

Zhao Hongying disagreed, "How can we achieve things overnight? It's already good to have ideas."

Long Haojun also nodded repeatedly, "A new product is not so easy to make. It's good to have ideas... I won't tell you, I want to go back and straighten out my ideas and strive to enter the experimental stage as soon as possible... But this seems to be a complete experimental plan, and there is no need for me to write it again..."

After saying that, he stood up and patted Long Jianhua heavily on his shoulder, "Jianhua, you have a clever idea of ​​mass production of stainless steel by melting the top layer reblowing converter and degassing it with RH equipment!"

Zhao Hongying laughed and scolded, "You won't be gentler? I almost slapped Jianhua on the table."

Long Haojun laughed, "He has practiced martial arts, and he is away from shooting... he is leaving!"

Seeing that Long Haojun talked more and more, Long Jianhua felt beautiful in his heart.

People will change according to changes in the environment, and Long Haojun is a best example.
Chapter completed!
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