Qin Jingbin's words were like a basin of cold water in winter and instantly poured on the heads of everyone in the venue, which made the people present instantly wake up from the series of smooth reports just now. A heart seemed to fall from the clouds to the bottom of the valley. In addition to the increasing noise of bowing their heads and talking, the smoke from the layers of cigarettes floating on the venue gradually became thicker. Even Lu Jiadong couldn't help but frown in the face of such a problem, and then, unconsciously, took out the cigarette from his pocket, lit it himself, and smoked it in a cowardly manner...

However, Wang Chuanchen, who was sitting next to Lu Jiadong, did not smoke, but thought for a while with a serious expression, then raised his head, with a little puzzled look in his eyes, but more full of hope, looking at Qin Jingbin, who lowered his head and looked helpless:

"Researcher Qin, do you have the advanced foreign cannon steel formula we got from special channels. Can't we develop it with this?"

Wang Chuanchen's words were like a shot of a cardiotonic agent, which made everyone in the venue raise their spirits again. Wang Chuanchen was right. Qin Jingbin did have an alloy metal ratio composition list for advanced cannon steel. This was obtained by Lu Jiadong from the German Danube Metal Company when introducing mechanical equipment such as cannon body tube self-tightening equipment.

After getting this recipe, Lu Jiadong handed it to Qin Jingbin for research, hoping that he could get the ideal materials like the fiberglass used to develop portable rocket launchers. Originally, Lu Jiadong forgot about this because of his recent busyness. Now that Wang Chuanchen mentioned it, Lu Jiadong remembered this incident, so his face was filled with a glimmer of hope again, and his eyes were once again focused on Qin Jingbin, looking forward to Qin Jingbin's answer. He didn't even bother to smoke the cigarette in his hand, so he let it burn slowly.

Not only Lu Jiadong, but everyone in the venue is like this. Even if there is only one percent hope, it will make people have 100% expectation. So Qin Jingbin once again became the focus of the venue. Although Qin Jingbin was not as cramped as the last time, his face became even more ugly. His tone of speaking was not only helpless, but also a little frustrated:

"There is a formula, but the cannon steel we tried to make according to the formula never meets the requirements!"

After hearing Qin Jingbin's words, Wang Chuanchen, who was originally impatient, couldn't sit still at this time, his body straightened slightly, and he couldn't wait to ask:

"Why?"

"Predict the technical and tactical indicators of 52-caliber artillery..." Qin Jingbin said, taking out a stack of thick technical information from his black briefcase, pushing the black-framed glasses on the bridge of his nose, then searched for a few times, paused on a file full of parameters, and then said:

"The body tube of the new 52-caliber artillery needs to withstand a standard chamber pressure of more than 6,000 bar, which requires the yield strength of the cannon steel to reach more than 1,100 megapas. In addition, the life of the new cannon steel must be maintained at a full charge state of more than 2,400 rounds. This requires that the new cannon steel not only have high indicators in terms of strength, but also have extraordinary requirements in terms of the ductility of the cannon steel material!"

Speaking of this, Qin Jingbin put down the information in his hand, then sighed deeply and continued: "But based on the formula, the cannon steel we developed cannon steel can only barely reach 750 megapas. Not only is the strength far from enough, but the ductility is also not enough at all!"

As soon as Qin Jingbin finished speaking, Lu Jiadong snatched out the cigarette butts he had already smoked in the ashtray in front of him, and then frowned and asked in confusion:

"Is it a problem with the cannon steel formula?"

"It shouldn't be!" Qin Jingbin shook his head.

"What's the problem?"

"Smelting and processing technology! And..." As soon as Lu Jiadong finished his question, Qin Jingbin answered, but just after he was halfway through, Qin Jingbin suddenly stopped. At this time, his face changed a few times, and finally he was frozen in a dark tone, and his voice became a little dim:

"And...the most important reason is...that's...that's just not enough experience!"

Although Qin Jingbin's words shattered the remaining hope in the hearts of the people present, none of them were talking about it. They all looked gloomy with their heads down, smoked smoke, or stared at the ceiling in a daze. The entire venue was instantly shrouded in a dark and depressing atmosphere. Even Wang Chuanchen, who had not smoked a cigarette before, had a gloomy face, stretched out his hand to Lu Jiadong and said softly:

"Xiao Lu, give me a cigarette!"

Lu Jiadong took out a cigarette and handed it to Wang Chuanchen, lit it for him, then lit it himself, took a deep breath, and then vomited the smoke. His dull brain relaxed a little under the influence of the cigarette. Qin Jingbin was right, the most important thing at the moment is experience. Although he has a complete cannon steel formula in his hand, it is not easy to make qualified cannon steel even if he wants to make such a qualified cannon steel.

For example, the temperature, the temperature, the timing and order of adding alloy elements, etc. are not provided by a recipe. These are all required for people with rich experience in steel smelting to do and understand them thoroughly. Just like cooking, the cooking method is clearly written, and what should be used and what should not be used is listed clearly.

But the dishes fried by novice are still one in the sky and one underground when compared with the master. The reason lies in the experience. How to put the appropriate amount of seasoning, how to adjust the temperature, and how to grasp the timing of the cooking. These are not something you can learn by just looking at the recipe. The same is true for cannon steel. As a material expert, Qin Jingbin has also been involved in metal materials.

It’s not that Qin Jingbin is not strong in theoretical knowledge, nor that he is not capable of his own ability. It’s just that he is far from being proficient in practical operations and has some lack of experience. However, this seemingly illusory experience has become an insurmountable gap in the development of cannon steel. How to overcome and how to overcome it? Lu Jiadong fell into deep thoughts in the face of this problem...

"Chief Commander Lu, Chief Wang! Look at whether this method works!" Just as Lu Jiadong was thinking, Lu Weijun, the military representative sitting on his side, suddenly spoke, which made Lu Jiadong, Wang Chuanchen and even everyone at the venue look at Lu Weijun to see what good ideas he had. Lu Weijun was not discomfortable at these focused gazes. After rectifying the ideas, he continued to say:

"I once followed the head of the military region to conduct research on the steel mill. At that time, they were producing marine steel. I saw that in order to increase the strength of some ship compartments, sometimes the thickness of the steel plates would be increased to ensure the strength, so I was wondering whether we should also appropriately increase the thickness of the barrel..."

"No, no!" Before Lu Weijun finished speaking, Qi Junwen, who was sitting on one side, shook his head like a rattle: "Our indicator is that the total weight of the new gun is not more than 15 tons. If the barrel thickness is increased, the weight will be increased. In this way, our tractor horsepower will increase, the operation of the artillery will become complicated, and the maneuverability will be greatly affected. In this way, this new large-caliber cannon will inevitably become an embarrassing waste. If this is the case, what is the point of developing this new gun?"

"This..." Lu Weijun just came up with this solution in a hurry, without thinking seriously. Now that Qi Junfeng asked this question, Lu Weijun didn't know what to say, but at this moment, Lu Jiadong, who was sitting next to him, had his eyes lit up, but then it became dim again, and then he frowned and muttered to himself:

"Steel mill...steel mill...if you follow the steel mill..."

"Xiao Lu, what do you think if?"

"What if we join forces with the steel mill?" Faced with Wang Chuanchen's question, Lu Jiadong raised his head and answered quickly. After hearing Lu Jiadong's words, Wang Chuanchen couldn't help but be stunned. Not only Wang Chuanchen, but everyone present looked at the young chief engineer with confusion, but Lu Jiadong's words did not stop there:

"Representative Lu's words inspired me. I was thinking that our new artillery is mainly carried out by Wanshan Factory at present. However, Wanshan Factory can do it in terms of manufacturing and assembly, but it has an indispensable shortcoming in the development of sub-projects. Take the cannon steel materials led by Researcher Qin as an example. Although the experimental equipment of the Materials Research Institute is one of the best."

As he said that, Lu Jiadong flipped the ash that had been burnt in his hand into the ashtray, then picked up the water cup in front of him and took a sip, moistening his throat and continued:

"Originally, we wanted to wait until the development of the cannon steel was completed and allocated to the corresponding steel mill as a supporting facility for mass production. However, from the current development, this approach has great limitations, that is, the Materials Research Institute, after all, is not the main place for steel production and manufacturing, and it is inevitable that there will be a lack of relevant experience, and it is easy to fall into the embarrassing situation of building behind closed doors!

So I was wondering whether we should change our thinking and expand the joint development of basic factories and research institutes into joint development of several joint factories and research institutes, and improve the supporting factories from passive acceptance to active innovation. In this way, while increasing the production enthusiasm of each factory, it can also promote the improvement of their technical level and R&D capabilities.

What’s more important is that these factories have hidden technical experts. Maybe they are not amazing, but the technology and unique experience they have in their hands are indeed unmatched, and this just makes up for our shortcomings. This kills multiple goals in one fell swoop. I think the joint production of two or more factories should be an inevitable choice!”
Chapter completed!