"This is the main rolling line, including the slab library, heating furnace area, rough rolling area, finishing rolling area, coiling area, and steel coil transportation area. The slabs sent from the continuous casting machine or the initial rolling mill are first inspected and cleaned, and then sent to the heating furnace, and after being released, high-pressure water descaling..."

Xu Wenliang pointed to the figure on the drawing and talked to Feng Xiaochen and Wang Genji. His eyebrows were full of energy, and there was no longer the dusk aura he deliberately pretended to have just been. What was the pain in the waist, presbyopia and astigmatism, no longer existed at this moment. His arms were flying on the drawing and wherever his fingers pointed, Feng Xiaochen even felt that he could hear the clanging sound of heavy metal.

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

After Xu Wenliang was fully introduced, Feng Xiaochen clapped his hands and said with emotion. Although his words were somewhat complimentary, they were not completely sincere. With Feng Xiaochen's eyes, it can be seen that Xu Wenliang has spent a lot of effort on this set of drawings, and the designs in many places are unique. Compared with the Soviet equipment used before abroad, it has indeed been very obvious optimization.

"How much is the cost of such a set of equipment?" Wang Genji asked from the side.

Xu Wenliang said: "Abstract a total of 800 million yuan, which is about 500 million US dollars, 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. According to this ratio, it is much cheaper to manufacture this set of equipment yourself than importing."

"It's only 800 million yuan, which is indeed very cheap." Wang Genji nodded. He didn't know much about metallurgical equipment, but he made up for it these days, which was quite common sense.

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

But in fact, this exchange rate is just a wishful thinking rule. On the domestic black market, 1 US dollar can be exchanged for 10 yuan. The country's export goods are sold at a price lower. After selling, the country will have to subsidize the export companies to ensure their profits. If the comprehensive exchange cost is calculated, 1 US dollar to 5 yuan is considered underestimated. In this way, 800 million yuan is equivalent to 160 million US dollars, which is of course considered cheap.

"Of course, my design is indeed a bit behind." Xu Wenliang said again, "Now the new foreign rolling mills have used hydraulic bending roll and continuous plate control technology, that is, CVC technology, and we are still lacking in this regard. In addition, the automatic width control technology of rolling parts is also a shortcoming, which is good at in this regard. There are also full hydraulic coilers, swing fly shears, and optimized head length control. We have not mastered these technologies, which need to be learned from abroad."

"You are talking about design, and there are actually many problems in craftsmanship, right?" Feng Xiaochen reminded.

"There are indeed many problems in terms of process." Xu Wenliang said, "The low-frequency pulse argon arc welding process you mentioned last time is an example. This is a relatively simple technology. Our technical bottleneck is mainly the precision processing of large parts, high-precision, hard tooth surface and special tooth-shaped gear processing, as well as wear-resistant alloy spray welding on the roller surface, etc., which is quite different from Western countries, and we admit that this is."

"Since that's the case, why is Qin Chong so resistant to the introduction of Clinz technology?" Feng Xiaochen asked sharply.

"Contradiction?" Xu Wenliang was stunned for a moment, then smiled faintly, "Are you saying that I am not the technical director of the project? This cannot be said to be a resistance, at best, I personally am a little... negative about this."

"Just because we didn't accept your drawing?" Feng Xiaochen pointed to the pile of drawings and asked.

Xu Wenliang stroked the drawings with his hand and said leisurely: "I know I shouldn't think so, and I should obey the country. But I'm not willing to give up. Xiao Feng, Xiao Wang, you are still young and cannot understand the mood of our generation. Since I first learned about metallurgical machinery manufacturing, I have dreamed of designing a rolling mill production line with the leading international level. What you see now is just a bunch of drawings, but to me, they are more precious than my life."

Feng Xiaochen had heard these words once in Cui Yongfeng. At this time, Feng Xiaochen sighed a little more. He was silent for a moment and asked, "Master Xu, if we cancel our cooperation with Clinz now and use your set of drawings to build the hot rolling mill in Nangang, would you like?"

"This assumption... doesn't make any sense?" Xu Wenliang said.

"Since you also know it's a hypothesis, then you might as well assume it." Feng Xiaochen said with a smile.

Xu Wenliang thought for a while and said, "If this is the case, I will feel that there is no regret in this life. Don't worry, I am not a conservative person, I will integrate the latest technology into it."

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

"What does it mean?" Xu Wenliang asked in surprise.

Feng Xiaochen said: "I think if you really use your drawings to build the 1780mm rolling mill of Nangang, even with some new technologies, what you will get will not be famous for all your lives, but will be regrets forever."

"Why?" Xu Wenliang widened his eyes.

Feng Xiaochen pointed to the drawing with his finger and said, "As far as I know, a series of new hot rolling technologies are being developed abroad. First of all, the idea of ​​hot loading, direct hot loading and direct rolling has been widely accepted. Its advantages are energy saving, reducing the inventory of slabs, and is conducive to accelerating the turnover of continuous casting billets. Secondly, Riben is developing a slab fixed width side pressure device. The idea is to rely on the stepping action of the module to continuously and continuously apply pressure to achieve the side pressure reduction width, which helps to improve the rolling quality of the head, tail and section.

Before finishing rolling, you can consider heating the edge of the intermediate strip, which will help improve and improve the temperature distribution and metallographic structure of the strip cross section and prevent the occurrence of edge cracks. In terms of plate shape control, if the upper and lower pairs of rolls are used to cross each other, the shape curve of the working roller can be simplified and the control accuracy of the convex part of the strip can be improved..."

Feng Xiaochen was too lazy to hide his shortcomings, so he combined the design ideas of rolling mills that appeared in later generations. When talking about complexities such as cross-rolling design, he simply picked up a drawing pencil and drew a schematic diagram for Xu Wenliang on the blank paper.

Xu Wenliang didn't feel much at first, but after hearing a few words, his face changed color. After all, he had been soaked in the rolling mill for many years, and his understanding of rolling mill technology was far better than Feng Xiaochen. Feng Xiaochen looked at these technologies from the perspective of an equipment research and development manager. He only knew that these technologies were more advanced than the current technologies, but he could only say the mystery of them.

Xu Wenliang is different. As soon as Feng Xiaochen said it, he understood what this technology means. Feng Xiaochen's schematic diagram was somewhat inaccurate and could not be fully explained in principle, but Xu Wenliang was able to understand the profoundness of this design idea.

Feng Xiaochen talked more than a dozen items in a row. Xu Wenliang became more and more shocked when he listened. By the time Feng Xiaochen finished speaking, Xu Wenliang was already looking a little as if he was dead.

"General Manager Xu...General Manager Xu..." Feng Xiaochen looked at Xu Wenliang, who was stunned and called out twice.

"Huh?" Xu Wenliang woke up as if he was dreaming. He looked at Feng Xiaochen, then looked down at the pictures drawn by Feng Xiaochen, then took a step back dejectedly and sat back heavily on his rattan chair.

"Trump, it's all garbage!" Xu Wenliang murmured.

"What did you say!" Wang Genji stood up his eyes, "Mr. Xu, what do you mean!"

"No, no, Director Wang, you misunderstood!" Xu Wenliang realized that his words were misunderstood. He pointed to Feng Xiaochen's pictures, pointed to his own pile of drawings, and said, "After listening to what Director Feng said, I realized that the pictures I spent more than ten years drawing were all garbage! If I do it according to my design, the equipment would be out of date before it was put into production. By that day, as Director Feng said, I will regret it for the rest of my life."

"Uh..." Wang Genji was stunned. He turned to look at Feng Xiaochen and asked, "Xiao Feng, what did you say? Why did you stimulate Chief Executive Xu like this?"

"Mr. Xu, you are so serious." Feng Xiaochen pulled his chair over, sat next to Xu Wenliang, and said, "Mr. Xu, I just want to tell you that metallurgical technology is a thousand miles a day. If we cannot open our eyes to see the world, not learn advanced foreign technologies, but blindly stick to the shortcomings, then we will eventually be left far away by others.

However, your set of drawings cannot be considered very backward, but it only needs to be improved on this basis, adopt some technologies introduced from abroad, and some new technologies that we have created ourselves. What I just said is also relatively advanced internationally. If General Manager Xu doesn’t mind, you can do it in the design of the rolling mill.”

"You mean, the country really plans to use its own technology to build the rolling mill for Nangang?" Xu Wenliang asked. This time, he did not show any excitement. Feng Xiaochen's blow to him just now was too big. He understood that even if the country really plans to let Qin Chonglai take charge of the Nangang production line, he does not have the courage to take out his design because he is already disappointed with this design.
Chapter completed!