Chapter 048 Refining outside the furnace
The work section chief Meng Shuizhi took the initiative to take responsibility, and Director Qin was tolerant and generous and expressed his understanding: "Who can be better than a sage? Lao Meng doesn't have to blame the worker brothers too much. 10 tons of scrap steel can continue to work as raw materials for scrap steel. It is enough to make the best use of everything. Don't attack the production enthusiasm of front-line workers because of occasional carelessness."
Meng Shuizhi held Director Qin's hand tightly: "Director Qin is right, long live understanding! I promise, we will never make the same mistake a second time!"
"Director Ye, Xiao Zhao, colleagues, you will maintain close cooperation with Ergang Steel, refine military steel well, and live up to the trust of the people's soldiers."
Director Qin finished his instructions and left.
Ye Guoli really has a lot of troubles at hand. He is in charge of two research offices, more than 100 people, and his subordinates apply for housing allocation, professional title evaluation, regular personnel promotions that are not within the scope of this cadre recruitment, etc. He cares about these chores and cannot give up these chores.
However, Director Qin's instructions had to be implemented, and Ye Guoli stayed in the steelmaking workshop to supervise the smelting of 945 steel.
Iron and scrap steel are sent to the steelmaking furnace, and the new furnace of 945 steel is being smelted.
Meng Shuizhi did not doubt the use of people. Even though Wei Zi made a mistake, Meng Shuizhi insisted on letting Wei Zi inject ingots.
Wei Zi, who knew shame and then bravely acted like a tiger, and Meng Shuizhi monitored Wei Zi's injecting operations throughout the whole process.
The oxygen pressure and carbon temperature of this furnace of 945 molten steel remained stable, and there were no abnormalities in the sampling and testing data.
Ye Guoli asked: "Xiao Zhao, how do you feel?"
Zhao Qingshan replied: "Feeling good, please go to RH to refine it."
The 945 steel water is first refined and released, and then discharged into the ladle and then transported to the RH equipment.
External refining is the transfer of the initial refining of the converter or electric furnace to another reaction vessel for refining, also known as secondary refining.
The rh vacuum refining technology was born in the late 1950s and dominated the outside furnace refining.
Under vacuum and inert gas conditions, the 945 molten steel has deep decarbonization, deoxidation, decontamination of inclusions and inclusions, adjusting the composition, and controlling the temperature of the molten steel.
Jianggang's only set of rh equipment uses the rh-ob method. This method first appeared in 1972. It was successfully developed by Nippon Steel and put into industrial production. Jianggang obtained the right to use its patented technology.
The RH equipment that Baosteel put into production in November 1985 also uses the RH-ob method, and the technical routes of the two good brothers are relatively similar.
More advanced than the rh-ob method is the rh-ij method, and the inventor is Professor Xu Kuangdi, a famous steel expert in my country.
In 1982, Professor Xu, then deputy director of the Department of Metallurgical Engineering of Shanghai University of Technology, published a paper on rh-ij method and constructed a complete set of refining rh-ij method theory.
How to transform the theoretical research results of rh-ij into industrial application technology?
my country's steel mills did not have enough industrial transformation strength five years ago.
Through reasonable and legal commercial transactions, Nippon Steel began industrial experiments on the rh-ij method in 1985 and was officially used in industrial production at the Nagoya factory under the Co., Ltd. at the end of 1986.
"Rh-ob's decarbonization speed is fast, but there are many disadvantages, such as low efficiency, severe splashing, and the rh vacuum chamber is prone to nodding, etc. In contrast, the Xu rh-ij method invented by Principal Xu is more efficient and reliable." Ye Guoli stared at the rh furnace monitoring instrument and looked at the watch from time to time.
Professor Xu, born in the War of Resistance Against Japan, was originally named Xu Kangdi, which was exactly the same as Lin Podi.
Professor Xu, who has achieved remarkable results in scientific research, has now been promoted to executive vice president of Shanghai University of Technology, and Ye Guoli is his fan.
"Rh-ij, rh-ktb are all very advanced, but our RH equipment cannot be changed for a while. Director Bao and his team's technical restructuring, hey, a little fight." Liu Yahui was obviously eager to achieve results, but he always liked to whisper behind others' backs.
"Time is tight, the task is heavy and the risk is high. We cannot blame Director Bao for technical reform. He did right." Zhao Qingshan said a fair word for Director Bao.
Most of the operators in the rh operating room are undergraduates and college students. Under their precise control, the vacuum pump converts the pressure energy of the steam into kinetic energy, and the high-speed steam is mixed with the furnace gas. The two airflows undergo violent energy exchange. The exhausted gas continues to mix with the high-speed steam while gradually compressing, the speed reaches the speed of sound, and the pressure continues to rise.
All chemical reactions occur in the vacuum chamber, forced decarbonization to 20ppm when blowing oxygen to the top gun. The chemical reaction heat of the aluminum alloy added significantly increases the temperature of the liquid steel, but the reaction products of the aluminum may contaminate the liquid steel. The operator's exquisite operation makes the heating range not exceed 20 degrees Celsius, thus ensuring the quality of the refining of the steel steel.
The vertical belt machine loads various metallurgical materials into the high-level silo, and the wire feeder feeds various wires to the ladle. The argon gas is fully stirred, and oxygen and sulfur are further removed. The fine adjustment of the alloy composition can reach trace amounts below 0.001%.
"Everything goes well, you can feed boron wire." Ye Guoli issued an order, and he had been squatting in Ersteel for the whole day.
Ye Guoli often looks at watches, and watches every 10 minutes on average.
His Shanghai watch is a good watch, shining golden and dazzling.
Ye Guoli is definitely not showing off his wealth. He keeps looking at his watch because he has something to do.
Zhao Qingshan said: "Director Ye, please go back to the office first. This furnace of steel casting is late at night."
"To be honest, there are several important documents in the institute that I need to sign. Then you continue to follow up and I will go back to process the documents. Thank you for your hard work, you should have a meal, you should rest, and you don't have to work and rest. You should combine work and rest. Report to me in time if there is any situation." Ye Guoli strided away from the operation room and went to busy with his administrative business.
Liu Yahui said deeply: "Director Ye is really busy, and being a leader is really tiring."
Liang Minfang asked: "Don't you apply for a cadre position too? Are you afraid of being tired?"
"If you are afraid of hardship and fatigue, you won't be a leading cadre?" Liu Yahui asked back, and said, "Mr. Liang, Zhang, we three are all 30 years old this year. Even if the Organization Department does not engage in this cadre recruitment, we should be promoted to the section chief. If we don't give the position of section chief, we should also give us brackets--Is it a section-level treatment?"
"It's you, you're crazy to be an official?" Liang Minfang scoffed. She said: "People's energy is limited, and it's difficult to concentrate on technical research after becoming an official. Our country has never lacked extremely smart scholars, but what we lack is perseverance."
"Mr. Liang, you are noble and majestic, I am just a vulgar. Keep two people guarding you, and the other two go to get food."
The four engineers from the Steel Research Institute also worked very hard. The operating room was changed, and no one could change the four engineers, so they could only take turns to have supper.
The brother who had just changed shifts said, "We are here to guard it. You four will go for dinner together."
Chapter completed!