The door of the courtyard house has been welded dead

Chapter 979 Bridge Design Planning

"The parameters are roughly this value. If you meet the department leader of the Equipment Division of the Logistics Department, you can reveal a little bit~!"

I roughly recalled that in the experimental records upstairs, Li Feng left conservative data on the letterhead and took a rough average.

Considering the instability of the boiler, it is impossible to achieve the best experimental parameters this time. Ideals are always ideals, and the cowhide should not be blown too much. He has confidence in Ran Qilin and is betting on a future for the Red Star Steel Rolling Mill.

"This type of special alloy steel has been upgraded and combined on the basis of Type 921, and its corrosion resistance has been greatly improved. Its yield strength can currently reach 921% to % of that of Type alloy steel. We are combining actual processing technology and welding technology to overcome the difficulties of reducing large-scale production and improving weld quality!"

"This type of special steel is tentatively named 921A alloy steel. It is urgent for relevant professionals to enter the factory to conduct research and verification and lay the foundation for subsequent production~!"

The pen finally left black ink marks on the letterhead, and Li Feng's name was signed on it.

Seeing Li Feng finish writing, Jiang Defu scratched his chin. From the above values, if Li Feng said it was a two-handed sword, then he was a complete layman. Although he had been cramming this part of the book recently, it still seemed like he was struggling.

"I'll contact them first~!"

After getting this letter, Jiang Defu's hand trembled slightly. Since he couldn't understand it, there must be someone in the naval equipment department who could. He picked up the phone on the table and called his superiors.

"Hmm, interesting~!"

Li Feng's gaze stayed on the phone for a moment, then he looked at the books on the desk.

Unexpectedly, Jiang Defu, who looks simple and honest, has actually started to secretly make up classes. They are all about mechanical processing and other books. After opening them, you can see the relevant notes he took, and you can tell that he has read them carefully.

After a while, after reporting the situation here, Jiang Defu hung up the phone and took off the officer's uniform hanging on the wall. It seemed that he wanted to put it on immediately.

Li Feng waved his hand, tapped the letterhead on the table, and reminded him that after all, this was still in the factory.

"Don't worry, I'll change it after I get out. There are many people in the factory, so take good care of your things and don't lose them~!"

After Jiang Defu nodded, he rolled up his clothes and pants, kept the letter close to his body, and left the heavily guarded research laboratory with Li Feng.

At noon, after a simple lunch, Li Feng took a short rest in the office.

After waking up, I looked at the folder that Secretary Wang had just delivered to the table.

The budget report for the design of the Anjiazhuang bridge has been rushed out. Although it is not a professional bridge construction company, it is not a bridge with a span of several hundred meters. A steel frame bridge of several tens of meters can barely make do. Used.

The technical department provided two options. One is to choose the narrowest section of Liangma River, and the other is to choose the place closest to the main road in Anjiazhuang. The difference is the span of the bridge.

Accurate measurements have been made at both places. The design span of the former is 32.8 meters and the design span of the latter is 47.6 meters. The width of the former is 6 meters and the latter is 8 meters. The expected load of the bridge deck is about 20 tons.

The relevant designers were very careful and made all the front, side, and overhead views and put them in folders, so that a layman like Li Feng could roughly understand what the bridge would look like after it was built.

Both use steel truss structures. Although the design appearance and load capacity are basically the same, the estimated steel usage is nearly doubled.

The former is expected to consume 145 tons of steel, and the latter is expected to consume 280 tons. For the steel rolling mill, the cost of both is approximately zero. State-owned enterprises use the steel produced in their own factories, and the workers are also their own workers. That is, the concrete for the pile foundation needs to be "coordinated" from the brother unit.

There is not much else in the steel rolling mill, but there is a lot of construction materials. The steel rolling mill can bear the usage of 47 tons, but if the span increases to meters, the usage of nearly tons will be somewhat beyond the planned limit.

The annual output of the Hongxing Steel Rolling Mill is about 120,000 tons, and the average monthly output is about 10,000 tons. Although 300 tons only accounts for 3%, in this era when steel is needed everywhere, Li Feng does not dare to wave his hand. Use these three hundred tons here. Li Feng had to squeeze more than a hundred tons here, like squeezing out toothpaste, and move slowly like ants, so that he could feel a little more relaxed. There was a big man waiting for him behind the family area of ​​the steel rolling mill!
For the steel rolling mill, there is no need to spend this money, but for the country, the relevant finances are still equivalent to using this money. If you can save a little, you will go two extra steps, but the steel will be saved.

in the afternoon.

Li Feng took the time to go to the third workshop, which is the welding workshop.

Standing at the door, you can see the raging flames sliding on the metal in the workshop. The air is filled with the smell of melted metal, mixed with the smell of welding wire.

The roar of the machine was intertwined with the crackle of the welding gun. The molten metal dripped on the ground and made a sizzling sound. Various finished and semi-finished metal components were neatly arranged on the shelves.

In the steel rolling mill, every workshop is very hot. To say that it is the hottest, it has to be here. Especially in summer, the temperature inside the workshop is completely different from that outside. When you walk to the door of the workshop, you can feel the heat wave inside. Come.

Considering labor protection during work, the workers had to wear heavy protective aprons and canvas gloves. It was very hard work while sweating like rain.

In order to prevent heatstroke, you have to take a break after working for a while. There is an uninterrupted supply of cold white popsicles. The popsicles in the cold storage in the cafeteria are almost frozen and have to be delivered to them. All comers are welcome, and as many as they come can be consumed.

This is the steel rolling mill in the 60s. There was no air conditioning or electric fans. Everything was accomplished by relying on people's tenacious will to complete the set targets and tasks.

This is why he doesn't like too many people sitting in the office.

"Deputy Director Li~!"

"Deputy Director Li~!"

Seeing Li Feng's arrival, the workers took off the black masks on their heads, some took off the dark sunglasses specially designed for welders, and greeted Li Feng enthusiastically.

"Thank you for your hard work~!"

"Thank you for your hard work~!"

Li Feng accepted everyone who came to shake hands. Even if his arms were covered with sweat and welding slag, he did not dislike them at all.

"Director Zheng, you can ask the Purchasing Department to get more ceiling fans and install them at some workstations. This money should be paid as needed to improve the working environment~!"

Not long after he came in, Li Feng's shirt had already stuck to his skin. The moment he came in, he felt like he was in a sauna.

Originally, he wanted to talk to the workers about bridge construction, but Li Feng put this aside and tried his best to help them improve the working environment.

"We reported it last year, but the power consumption in the factory has been overloaded, and the transformer must also be considered in summer!"

Director Zheng seemed to be used to it, and gave Li Feng a wry smile. The problem of high temperatures in summer is a commonplace problem. It is not that it has not been solved in a year or two, but it affects the whole body. In the event of a power outage, it will even affect production. They are all tightening their belts.

"The load is not enough, then increase the number of transformers, how many electric fans, how much electricity can be consumed, and I will find a way to communicate with the power supply department~!"

When he walked into the workshop office, he saw an old-fashioned electric fan with a sense of age. It was spinning feebly in circles, blowing hot air, which made Li Feng feel a little restless.

"Go and invite all the welder comrades above level seven~!"