Siheyuan: Craftsmen of a Great Country

The waiting time is excruciating.

After Su Changming and others walked back and forth around the converter for an hour, they began to find something to do to kill time.

For example, testing the converter, preparing the materials needed for the next experiment, and testing again and again.

Lu Yuehua even ran to the department responsible for the test just now, urging them to produce the data.

It was already afternoon when the test results came out.

Lu Yuehua came running with the report in his hand: "It's successful, it's successful, our converter steelmaking experiment was successful."

He ran to Jiang Chen and handed the form to Jiang Chen.

Everyone was ecstatic and gathered around, regardless of whether they could understand the complicated data on it or not.

Jiang Chen looked at it carefully. All the data on the steel were very nice.

The expected 30 tons of steel were finally refined to 27.8 tons, all of which met the standards, and the quality was better than the steel produced in the open-hearth blast furnace.

Jiang Chen smiled and said: "Now I can announce that the flower grower's converter steelmaking method has been successfully developed."

There was a burst of cheers at the scene.

Su Changming choked up: "We succeeded, we finally succeeded."

"17 minutes and 24 seconds, 28 tons of steel. What an amazing achievement, we."

He was speechless.

Having worked in a steel mill for many years, he knows better than anyone else what this set of data represents.

Lu Yuehua also felt a little emotional.

One of his mistakes almost turned into a big mistake, which pierced his heart like a thorn.

Now that the experiment was successful, he could finally breathe a little easier.

After everyone cheered, Jiang Chen started his next plan: "Okay, everyone, be quiet. The top-blowing oxygen method was successful, and we took the first step successfully."

"But from the data I got, I think this method is still flawed."

After a few simple words, the scene suddenly became quiet.

Su Changming was stunned: "Director Jiang, this method is far ahead of the current steel-making methods in terms of refining time and steel quality."

"But you're still not satisfied. Are you being a little picky?"

He has paid too much for this child and does not want anyone to veto this outcome.

Not even the person he had children with.

Jiang Chen said slowly: "From the data point of view, there are two obvious flaws in this one just now. One is insufficient desulfurization, and the other is high oxygen content."

"Although it has met the requirements for steel refining, the quality can only be considered qualified, not high. Moreover, if this method is used to refine alloy steel, expensive alloy elements are easily oxidized and lost, and the quality is difficult to improve."

"In addition, during the refining process, the operability is too poor. We can only adjust it by controlling the input of oxygen and adding the charge, but these two points alone are not enough for me to really control it better. .”

"Furthermore, the reaction speed is too fast, and the top blowing does not stir the charge and water enough, resulting in a high content of iron oxide in the residue. Our steel yield is low. A lot of the iron has not had time to turn into steel, and the heat has been consumed. .”

"So we planned to produce 30 tons of steel, but ended up producing less than 28 tons. That's why. Although the slag can be reused to make steel again, it is still troublesome."

"And as the furnace expands, this shortcoming of insufficient stirring power will become more and more prominent."

Everyone was silent.

For those who don’t understand, you can know that these shortcomings mentioned by Jiang Chen do have an impact.

If you understand, you know that these situations do exist.

After a while, Su Changming said: "Gong Jiang is right, can we promote this model and find solutions at the same time?"

Jiang Chen pondered for a moment: "I have thought about it for a long time in the past few days, and I already have a solution in my mind."

"I want to try to solve it according to my ideas first. If it can be solved, then I will present the most perfect solution to the superiors."

"If it can't be solved, then follow Su Gong's idea and promote it while looking for a solution."

Lu Yuehua said: "Jiang Gong, tell me your solution."

Jiang Chen said: "It's actually very simple. We can add another blowpipe at the bottom of the furnace to blow in inert gas. Nitrogen is blown in the early stage to save costs, and argon gas is blown in later to deeply decarburize, deoxygenate, and desulfurize."

"Blowing in inert gas can protect expensive alloy elements from being oxidized, and can also appropriately reduce the reaction speed to provide longer-lasting heat, increase the steel production rate, and allow the converter to efficiently refine alloy steel."

"Blowing in gas from the bottom can make our mixing more thorough, make contact more complete, and increase the tapping rate."

"When necessary, carbon monoxide, natural gas and other substances can even be blown in to assist in temperature control, giving us stronger control during the steelmaking process."

Lu Yuehua kept nodding: "Well, I think Director Jiang's idea is feasible. Although it will take us a few days to adjust, once it succeeds, our benefits will far exceed our efforts."

"Since you already have an idea, just do it. There's nothing to hesitate about."

This guy's character hasn't changed at all.

Su Changming said: "Since both of you think it's feasible, let's do this first."

"Then how should we adjust and improve our converter?"

Jiang Chen took out the schematic diagram of composite blowing converter steelmaking that he and Wan Li had drawn while waiting:

"It's actually very simple. We only need to make appropriate adjustments on the current basis to turn our top-blown oxygen converter into a composite blowing converter to meet my requirements."

Su Changming took the drawing and looked at it: "This modification is indeed not difficult. It should be completed this weekend."

Jiang Chen was stunned: "Let's have a good rest on Sunday first, don't be in a hurry."

Su Changming said: "There is no rush to take a break. Once the research on the steelmaking method is completed, I will apply to the factory to give everyone a few days off to have a good rest."

Lu Yuehua also said: "Then I won't rest either. During the time they are renovating the converter, I will first sort out the steelmaking method of the top-blown converter to facilitate subsequent reports."

Seeing that everyone was working so actively, Jiang Chen couldn't stop him, so he said: "Since everyone is so enthusiastic about work, I won't rest that weekend and will work hard with everyone."

"But Teacher Lu, your most important task is not to organize the report, but to find the equipment and materials for inert gas preparation and have them as backup."

Lu Yuehua was startled: "They had objections when I left Qingbei. Now if I go to them, I don't know if they are willing to help."

Just after I left, I was published in the National Daily. Qingbei University felt that I had been deceived and that I would be happy if I could be happy.

Jiang Chen smiled and said: "This is simple, you just say that they provide relevant materials. After we research the results, we can add their names to the results, such as Qingbei University, the supplier of raw materials."

"But you must remember to keep it secret and don't tell the specifics. Just say that this is a major event that can change the status quo of the flower grower's industry. Its significance and simplicity are more than ten times that of the development of alloy steel."

Lu Yuehua's eyes lit up: "If that's the case, they definitely have no reason to refuse."

"Even if the school doesn't have it, if we steal or rob it, we will find everything we need."