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Qin Jingbin's words were like a basin of cold water poured on the heads of everyone in the venue in an instant, so that the people present instantly woke up from the series of reports that went smoothly just now, and their hearts seemed to fall from the clouds to the bottom, and the participants gathered around the conference table in addition to the noise of bowing their heads and discussing, the smoke from the layers of cigarettes floating in the venue gradually thickened, and even Lu Jiadong couldn't help frowning in the face of such a problem, and then unconsciously, took out the cigarette from his pocket, lit it himself, and smoked it sullenly

However, Wang Chuanchen, who was sitting next to Lu Jiadong, did not smoke, but thought for a while with a solemn face, and then raised his head, with a little puzzlement in his eyes, but more full of hope, looking at Qin Jingbin with his head down and a helpless face:

"Researcher Qin, you have the advanced foreign cannon steel formula we got from a special channel, can't you develop it with this?"

Wang Chuanchen's words were like a shot in the arm, so that the spirit of everyone at the venue couldn't help but be raised again, Wang Chuanchen was right, Qin Jingbin did have a list of alloy metal proportions of advanced cannon steel, which Lu Jiadong commissioned Blomberg to get from the German Danube Metal Company when he introduced mechanical equipment such as artillery body tube self-tightening equipment.

After getting this formula, Lu Jiadong directly handed it over to Qin Jingbin for research, hoping to get the ideal material soon like the FRP when developing a portable bazooka, originally Lu Jiadong forgot about this because of his recent busyness, and now Wang Chuanchen mentioned it, so Lu Jiadong remembered this matter, so his face was full of hope again, and his eyes were once again focused on Qin Jingbin's body, looking forward to Qin Jingbin's answer. I didn't even bother to smoke the cigarette in my hand, and let it burn slowly on its own.

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% expectations, so Qin Jingbin once again became the focus of the venue. And although Qin Jingbin was not as cramped as he was last time, his face became even more ugly, and his tone of voice was a little frustrated in addition to helplessness:

"The formula is there, but the cannon steel we tried to produce according to the formula has never met the requirements!"

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

"Why?"

"Calculate according to the technical and tactical indicators of 52 times caliber artillery," Qin Jingbin said as he took out a thick stack of technical information from his black briefcase. Pushing the black-rimmed glasses on the bridge of his nose, he rummaged through them a few times, stopped on a file full of parameters, and continued:

"The body of the new 52 times caliber gun needs to be more than 6000 bar base chamber pressure, which requires the yield strength of the gun steel to reach more than 1100 megapascals, in addition to the body life of the new gun to maintain more than 2400 rounds in the full charge state, which requires the new gun steel not only to have a high index in terms of strength. There are also extraordinary requirements for the ductility of cannon steel materials!"

Speaking of this, Qin Jingbin put down the information in his hand. Then he sighed deeply and said: "But according to the formula, the cannon steel we developed can only barely reach 750 megapascals, not only the strength is far from enough, but the ductility is not up to the requirements at all!"

As soon as Qin Jingbin's words fell, Lu Jiadong snuffed out the cigarette butt that he had finished smoking in the ashtray in front of him, and then asked suspiciously:

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

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

"What's the problem then?"

"Smelting and processing technology!" Lu Jiadong had just finished speaking. Qin Jingbin opened his mouth to reply, but as soon as he was halfway through his words, Qin Jingbin suddenly stopped, and at this time, his face changed a few times, and finally froze under a dark tone. The voice became a little darker:

"And the most important reason is that there is not enough experience!"

Although Qin Jingbin's words shattered the remaining hope in the hearts of the people present, none of them were discussing it, all of them looked gloomy or lowered their heads, or smoked a stuffy cigarette, or simply looked at the ceiling in a daze, the whole venue was instantly shrouded in a gloomy and depressing atmosphere, even Wang Chuanchen, who had not smoked a cigarette before, also had a gloomy face, stretched out his hand to Lu Jiadong, and said softly:

"Little Lu, give me a cigarette!"

Lu Jiadong took out a cigarette and handed it to Wang Chuanchen, helped him light it, and then lit one himself, took a deep breath, and then spit out the smoke, the dull brain was slightly relaxed under the effect of the cigarette, Qin Jingbin was right, the most important thing at present is experience, although there is a complete cannon steel formula in his hand, but even so, it is not easy to refine qualified cannon steel.

For example, the temperature, the size of the heat, the timing and sequence of adding alloying elements, etc., are not provided by a formula, and this requires people with rich experience in steel smelting to do and understand thoroughly, just like stir-frying, the method of stir-frying is clearly written, and what should and should not be used is also clearly listed.

But the dishes fried by novices are still one heaven and one underground compared to the master, and the truth is in experience, how to put the appropriate amount of seasoning, how to adjust the size of the fire, and how to grasp the timing of the pot, these are not just the recipes that can be learned, the same is true for the cannon steel of the artillery, Qin Jingbin, as a material expert, has also dabbled in metal materials.

It's not that Qin Jingbin is not strong in theoretical knowledge, nor is it that his own ability is not good, it's just that he is far from being proficient in practical operation, and he is a little lacking in experience, but this seemingly illusory experience has become an insurmountable gap on the road to the development of artillery steel

"Chief Master Lu, Chief Wang, see if this method works!" Just as Lu Jiadong was thinking about it, Lu Weijun, the military representative sitting on his side, suddenly spoke, which made Lu Jiadong, Wang Chuanchen and even everyone in the venue look at Lu Weijun to see what good way he has it, and Lu Weijun did not feel half uncomfortable with these focused gazes, and then said:

"I once followed the head of the military region to the steel mill to conduct research, 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 plate will be increased to ensure strength, so I wondered, should we also increase the thickness of the gun barrel appropriately."

"No, no!" Without waiting for Lu Weijun to finish speaking, Qi Junwen, who was sitting on the side, shook his head like a rattle: "Our indicator is that the total weight of the new artillery does not exceed 15 tons, and if the thickness of the barrel is increased, the weight will inevitably increase, so that the horsepower of our tractor will increase, the operation of the gun will become complicated, and the mobility will be greatly affected, so this new large-caliber artillery will inevitably become an embarrassing chicken rib, if so, what is the point of us developing this new artillery?"

"This" Lu Weijun just came up with this method in a hurry, and he didn't think about it seriously, and now he was asked by Qi Junfeng like this, so that Lu Weijun didn't know what to say, but at this moment, Lu Jiadong, who was sitting next to him, had a bright eye, but then dimmed again, and then frowned and muttered to himself:

"Steel mills, steel mills, if steel mills"

"Xiao Lu, what do you say if?"

"What if we join forces with the steel mill?" Facing Wang Chuanchen's question, Lu Jiadong raised his head and replied quickly, and after listening to 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 puzzled eyes, but Lu Jiadong's words did not stop there:

"Representative Lu's words have inspired me, and I am thinking that at present, our new artillery mainly relies on the Wanshan Factory, but the Wanshan Plant can be in manufacturing and final assembly, but it has indispensable shortcomings in the development of sub-projects. ”

As he spoke, Lu Jiadong flicked the half-burned cigarette ash in his hand into the ashtray, then took a sip of the water cup in front of him and moistened his throat, and then said:

"Originally, we wanted to wait for the completion of the development of artillery steel, and then allocate it to the corresponding steel mill as a supporting Wanshan plant for mass production, from the current development, such a practice has great limitations, that is, the materials research institute, after all, is not the main production and manufacturing of steel, lack of relevant experience is inevitable, and it is easy to fall into the embarrassment of behind closed doors!

So I'm thinking, should we change our thinking, expand the joint research and development of basic factories and scientific research institutes to the joint development of several joint factories and scientific research institutes, and upgrade the supporting factories from passive undertaking to active innovation, so as to increase the production enthusiasm of each factory at the same time, it can also promote the improvement of their technical level and research and development capabilities.

What's more important is that these factories have hidden technical masters, maybe they don't look amazing, but the technology and unique experience in their hands are indeed incomparable to us, and this just makes up for our shortcomings, so many birds with one stone, I think the joint production of two or more factories should be an inevitable choice!"

"Chief Master Lu's idea is good, but who and how can we unite?" As soon as Lu Jiadong's words fell, Qin Jingbin frowned and looked at Lu Jiadong on the main seat, and his words also made the newly active minds of the people present fall into silence again (to be continued......

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