"This is the main rolling line, including slab warehouse, heating furnace area, rough rolling area, finishing rolling area, coiling area, and steel coil transportation area. The www.biquge.info slabs sent from the continuous caster or the primary rolling mill are first inspected and cleaned, and then sent to the heating furnace, and then high-pressure water descaling is carried out after the furnace is released......"

Xu Wenliang pointed to the graphics on the drawings and talked to Feng Xiaochen and Wang Genji, his eyebrows were bright, and he completely lost the twilight that he had deliberately pretended just now. What kind of back pain, what kind of presbyopia and astigmatism, it didn't exist at this moment, his arm was flying on the drawing, and where his fingers pointed, Feng Xiaochen even felt that he could hear the sonorous sound of heavy metal.

"It's so wonderful, it's just a work of art. ”

After Xu Wenliang finished introducing everything, Feng Xiaochen slapped his face and said with emotion. Although his words were somewhat flattering, they were not entirely insincere. From Feng Xiaochen's vision, it can be seen that Xu Wenliang has spent a lot of effort on this set of drawings, and the design of many places is unique, and compared with the Soviet equipment used abroad, it has indeed been very obviously optimized.

"How much does such a set of equipment cost?" asked Wang Genji beside him.

Xu Wenliang said: "The full set of equipment is roughly calculated, about 800 million yuan. At the exchange rate, it was almost $500 million, which is 50% higher than the price of imported German equipment. But in fact, although we now stipulate that 1 US dollar is exchanged for 1.7 yuan, the actual exchange cost is more than 5 yuan. ”

"It's only 800 million yuan, which is really cheap. Wang Genji nodded, he didn't know much about metallurgical equipment, but he made up for it these days, and it was a bit of common sense.

The contract value of the Klinz hot rolling mill introduced by the Nanjiang Iron and Steel Plant is 320 million US dollars, which includes the cost of transferring part of the technology from the German side. If the imported technology is not included, the price can be lower. According to the domestic exchange rate at that time, 320 million US dollars was only equivalent to more than 500 million yuan, which was less than the 800 million yuan Xu Wenliang said.

But in fact, this exchange rate is just wishful thinking, and on the domestic black market, 1 US dollar can be exchanged for almost 10 yuan. The country's export commodities are sold at a low price, and after they are sold, the state has to subsidize the export enterprises in order to ensure their profits. If you calculate the comprehensive exchange cost, 1 US dollar to 5 yuan is considered an underestimate. In this way, 800 million yuan is equivalent to 160 million US dollars, which is of course cheap.

"Of course, I'm a bit behind in this design. Xu Wenliang took a step back and said: "Now the new rolling mills abroad have used hydraulic bending roll and continuous plate shape control technology, that is, CVC technology, and we are still lacking in this regard. In addition, the automatic width control technology of rolling pieces is also a shortcoming, and Klinz is good at this. There are also full hydraulic coilers, pendulum flying shear, and optimized control of the length of the cutting head, which we have not mastered, which needs to be learned from abroad. ”

"You're talking about design, but there are actually a lot of problems in the process, right?" Feng Xiaochen reminded.

"On the craft side, there are a lot of problems. Xu Wenliang said, "The low-frequency pulsed argon arc welding process you mentioned last time is an example. This is a relatively simple technique. Our technical bottlenecks are mainly in the precision machining of large parts, the machining of gears with high precision, hard tooth surface and special tooth shape, as well as the wear-resistant alloy spray welding on the surface of the roller table, etc., and the gap between Western countries is relatively large, which we admit. ”

"In that case, then why is Qin Zhong so resistant to introducing Klinz technology?" Feng Xiaochen asked sharply.

"Resistance?" Xu Wenliang was stunned for a moment, and then smiled faintly, "Are you saying that I am not the technical leader of the project? This can't be said to be resistance, at best, I personally have a little ...... about this matter Negative. ”

"Just because we didn't accept your drawings?" Feng Xiaochen asked, pointing to the pile of drawings.

Xu Wenliang stroked the drawings with his hand and said leisurely: "I know that I shouldn't think like this, individuals should still be subordinate to the state." However, I am not reconciled. Xiao Feng, Xiao Wang, you are still young and can't understand the mood of our generation. Since I first studied metallurgical machinery manufacturing, I dreamed of designing a rolling mill production line with international leading level. All you see is a bunch of drawings, but they are more precious to me than my life. ”

Feng Xiaochen had already heard these words once from Cui Yongfeng, and when they came out of Xu Wenliang's mouth, Feng Xiaochen was a little more embarrassed. He was silent for a moment and asked, "Chief Engineer Xu, if we cancel the cooperation with Klinz now and use your set of drawings to build the hot rolling mill of Nangang instead, would you be willing?"

This hypothesis...... It doesn't make sense, right?" said Xu Wenliang.

"Since you know it's a hypothesis, let's assume it. Feng Xiaochen smiled.

Xu Wenliang thought for a moment and said, "If this is the case, I will feel that I have no regrets in this life." Rest assured, I'm not a conservative person, and I'll incorporate the latest technology. ”

Feng Xiaochen shook his head and said, "I don't think so. ”

"What do you mean?" asked Xu Wenliang in surprise.

Feng Xiaochen said: "I think that if you really use your set of drawings to build the 1780 mm rolling mill of Nanjing Iron and Steel, even if you add some new technologies, what you will end up with will not be a long life, but a lifetime of regrets." ”

"Why?" Xu Wenliang's eyes widened.

Feng Xiaochen pointed to the drawings and said: "As far as I know, a series of new hot-rolling technologies are currently being developed abroad. First of all, the idea of hot charging, direct hot charging and direct rolling has been widely accepted, and its advantages lie in energy saving, reducing slab warehouse inventory, and helping to accelerate the turnover of continuous casting billets. Secondly, Nibenzene is developing a slab fixed-width side pressure device, the idea of which is to rely on the module stepping action to continuously and uninterrupted pressure on the side of the slab to achieve side pressure reduction, which helps to improve the rolling quality of the head, tail and section.

Before finishing rolling, the edge heating of the intermediate strip billet can be considered, which helps to increase and improve the temperature distribution and metallographic structure of the cross-section of the strip and prevent the appearance of edge cracks. In terms of plate shape control, if the upper and lower pairs of rolls are crossed with each other, the shape curve of the work roll can be simplified, and the control accuracy of the strip protrusion can be improved......"

Feng Xiaochen didn't bother to hide it, and put together the design ideas of the rolling mill that appeared in later generations. When it came to complicated places such as the design of cross rolls, he simply picked up a drawing pencil and drew a schematic diagram for Xu Wenliang on a blank piece of paper.

Xu Wenliang didn't feel much at first, but after listening to two sentences, his face changed color. After all, he is a person who has been immersed in the rolling mill for many years, and his understanding of the rolling mill technology is far better than Feng Xiaochen. Feng Xiaochen looked at these technologies from the perspective of an equipment R&D manager, he only knew that these technologies were more advanced than the current technologies, but he could only say three or two points about the mysteries.

Xu Wenliang was different, as soon as Feng Xiaochen said it, he understood what this technology meant. Some of the schematic diagrams drawn by Feng Xiaochen are not accurate, and the principle cannot be fully explained, but Xu Wenliang can understand the profundity of this design idea.

Feng Xiaochen talked about more than a dozen items, and the more Xu Wenliang listened, the more frightened he became, and by the time Feng Xiaochen finished speaking, Xu Wenliang already looked a little dead.

Chief Engineer Xu...... Chief Engineer Xu ......" Feng Xiaochen looked at Xu Wenliang, who was stunned, and called softly twice.

"Huh?" Xu Wenliang woke up like a dream, he looked at Feng Xiaochen, and then looked down at the pictures drawn by Feng Xiaochen, and then took a step back and sat back on his rattan chair.

"Garbage, it's all garbage!" Xu Wenliang muttered.

"What are you talking about!" Wang Jiji set up his eyes, "Chief Engineer Xu, what do you mean by this!"

"No, no, Director Wang, you misunderstood!" Xu Wenliang realized that his words were misunderstood, he pointed to Feng Xiaochen's drawings, and then pointed to his pile of drawings, and said: "After listening to what Director Feng said, I realized that the drawings I spent more than ten years drawing are all rubbish! If I do it according to my design, the equipment will be outdated before it is put into production." On that day, as Director Feng said, I will regret it for the rest of my life. ”

"Uh......" Wang Genji was stunned, he turned his head to look at Feng Xiaochen, and asked, "Xiao Feng, what did you say?

"Chief Engineer Xu, you are serious. Feng Xiaochen pulled his chair over, sat next to Xu Wenliang, and said: "Chief Engineer Xu, I just want to tell you that metallurgical technology is advancing day by day, if we can't open our eyes to the world, don't learn foreign advanced technology, but blindly cling to the incomplete, then we will eventually be left far away by others."

However, your set of drawings is not very backward, but it needs to be improved on this basis, using some foreign imported technology, and we can also use some of our own original new technologies. What I just said is relatively advanced in the world, if Chief Engineer Xu doesn't mind, you can use it in the design of the rolling mill. ”

"Are you saying that the country really intends to use its own technology to build a rolling mill in Nangang?" asked Xu Wenliang. This time, he didn't show any special excitement, the blow Feng Xiaochen gave him just now was too big, he understood that even if the country really planned to let Qin Chonglai be in charge of this production line of Nangang, he didn't have the courage to take out his own design, because he was already disappointed in this design.

He used to have such a strong desire to turn his design drawings into reality. He was also mentally prepared to adopt some international advanced technology to modify his design, and in his original idea, these international advanced technologies were nothing more than that. However, after listening to the series of concepts that Feng Xiaochen told him, he finally understood that he had been thrown far away by the times. (To be continued.) )