"Boss, today I will take your "nephew" to work. At the dinner table, Xu Damao ran out after eating in two bites, dropping a word.

Then He Yuzhu also hurriedly finished eating and ran out.

Seeing these two people, Jiang Yan was a little speechless.

At this time, Shishi, who was also eating at the dining table, said, "Boss, I'll ride your bike to work today." ”

Hearing the stone's words, Jiang Yan nodded.

Xu Damao and He Yuzhu are fighting over who sits in the funnel, and the fight is that no one will let anyone with red faces.

Jiang Yan, who was about to ride a bicycle, saw this situation and shouted directly: "The pillar sits on the funnel, and Da Mao goes to sit in the back." ”

"Boss, why can the pillar sit on the funnel."

Hearing Xu Damao's words, Jiang Yan spoke a little helplessly. "He's big, and he's squeezed in the back."

Hearing Jiang Yan's words, Xu Damao looked at himself and then at the saddle, and could only sit helplessly behind Jiang Yan and Xiao Liuzi.

After everyone got on the motorcycle, Jiang Yan stepped on the accelerator, the motorcycle started, and walked towards the rolling mill in the dust.

In the blink of an eye, Jiang Yan had been back to the rolling mill for two days, and at this time, there were a lot of straw papers full of words scattered on the ground in Jiang Yan's office.

After finishing the calculation, Jiang Yan rubbed his wrist, which was a little painful, and glanced at the recipe and process flow he had written. Nodding in satisfaction. It took about a week before and after, and it was finally done.

I still put the data I sorted out during the day on the space computer every night, and it took me so long.

If you use these rudimentary calculation tools in the department, I guess I won't be able to finish it in a month or two.

Seeing these rudimentary calculation tools, Jiang Yan couldn't help but admire the predecessors who used these tools to grow mushroom clouds.

Jiang Yan got up and put the sorted materials into the safe.

After putting it away, Jiang Yan picked up the phone and dialed the phone in the guardhouse on the second floor, asking the guard to notify the cleaner to clean up his house, and asked all the handwritten papers to be destroyed.

After putting down the phone, Jiang Yan left the office directly and walked towards the fifth workshop.

The five and six workshops of the rolling mill are also called steelmaking workshops, and it should be understood from a literal point of view that the main role of these two workshops is steelmaking.

A large part of the steel required for the production of the rolling mill is produced by these two workshops.

"Jiang Gong, why do you have time to come to our workshop today."

In the rolling mill, Jiang Yan is almost always referred to as the section chief on formal occasions, but the workers prefer to call Jiang Yan Jiang Gong.

"What, Director Guo, I heard you mean to be picky! This means that I blame me for not coming to our steelmaking workshop. ”

Director Guo Minghui, who was told by Jiang Yan, scratched his head embarrassedly and smiled at Jiang Yan.

Director Guo, who was already very dark, smiled and set off his teeth, which were really white.

"I'm to blame for this, I should have come to our steelmaking workshop earlier. I'm here to apologize to my brothers. ”

Jiang Yan's apology made Director Guo a little embarrassed.

So he directly pulled Jiang Yan to the workshop, and introduced the situation in the workshop as he walked.

"Our fifth and sixth workshops are the two workshops with the most workers in the whole factory, and the work of our workshop is relatively light compared to the other workshops."

"There are three steel-making open-hearth furnaces in our fifth workshop, two are 300T, and the other is 500T.

"Our workshop plus one 300T and two 200T open-hearth furnaces in the sixth workshop can produce up to 20W tons of steel per year, and the steel produced can not only meet our rolling mills, but also supply some enterprises."

As he spoke, Jiang Yan could feel Guo Minghui's slow pride.

Jiang Yan nodded while listening, and just walked into the workshop, a heat wave swept in, and the workers working in the workshop were dressed relatively simply.

Every time Jiang Yan passed by a worker, the workers greeted Jiang Yan warmly.

From the beginning of entering the factory, they also saw what Jiang Yan did clearly, and knew that Jiang Yan was a capable person. Naturally, I was much more enthusiastic.

After Jiang Yan finished visiting the two workshops, he returned to his office and sighed at his safe.

It seems that his share of 7075 aluminum alloy will be taken out later, and the top priority now is to increase the output of steel and update the equipment.

Jiang Yan knew that in 1955, the country's steel output was only 2.85 million tons, and the country's annual steel output at that time was not comparable to a large steel plant in Europe and the United States.

At that time, the country's population was almost 615 million, and per capita steel production increased to 4.64 kilograms. This year, India's per capita steel production was only 4.35 kilograms. Although it surpassed India, North Korea, with a population of only 9.07 million in 1955, produced 137,000 tons of crude steel, or 15.1 kilograms per capita, more than 3.2 times that of China.

Construction is underway all over the country, and it can't be done without steel. Steel is the backbone of a country.

When Jiang Yan visited the two steelmaking workshops just now, he noticed that these open-hearth furnaces in these two workshops have been used for a long time, and the latest open-hearth furnace is the equipment of the little devil more than ten years ago.

It takes about eight hours to produce a furnace of steel, which is too inefficient.

In the later stage, I have to do a lot of experiments, and I urgently need an experimental workshop, so I can't go to the steelmaking workshop or other workshops to collaborate every experiment. It's a little too cumbersome.

Jiang Yan laid a new blank sheet of paper on the drawing board and began to write and draw on it.

The steelmaking furnace designed by Jiang Yan is called oxygen side blowing converter steelmaking, which blows air or oxygen into the molten pool from the side of the converter wall, and smelts molten steel into molten steel by using carbon, silicon, manganese, phosphorus and other elements in molten iron oxide and heating to increase the temperature of the molten pool.

Jiang Yan remembered that alkaline air side-blowing converter steelmaking was a steelmaking method that was successfully tested after liberation and rapidly developed in 1958 during the mass movement to run iron and steel. It has better adapted to the needs of local industrial and agricultural development when China's resource conditions are not suitable for the time, and has made certain contributions to the development and improvement of the layout of China's iron and steel industry for more than 20 years.

Previously, Jiang Yan's factory had a 30T oxygen side-blown converter steelmaking furnace.

In his own time, this type of steelmaking furnace has been replaced by more advanced steelmaking furnaces, but now oxygen converter steelmaking furnaces are the world's mainstream steelmaking method.

Compared with the current open-hearth, this method consumes less fuel and has much higher productivity, and more importantly, the cost of manufacturing an open-hearth furnace is only about 60 percent of that of an open-hearth.

The furnace is composed of converter furnace body, tilting system, oxygen lance and oxygen supply system, which can be produced according to the current technology level.

Jiang Yan, the company's oxygen side-blowing converter before, was disassembled and repaired, and the various structures inside were very familiar.

So Jiang Yan painted quickly, almost without any pause. It didn't take long for Jiang Yan to work hard, and Jiang Yan's side was full of drawn design drawings.

After stopping for the last stroke, Jiang Yan put away all the drawings, and then wrote a detailed introduction to the oxygen side blowing converter.

After writing, Jiang Yan went directly to the factory director's office.

(End of chapter)