The third-place test paper belongs to Zhang Xiangyang, who was originally a test driver, and naturally has some opinions on the power system of the tank, and this is not a direct request for the world's advanced level, but a reasonable plan put forward by a reasonable basis and in combination with his own reality.

If you don't take into account the current industrial base, and rush to get a 1500 horsepower engine, it will definitely be a disaster to produce.

Needless to say about the current motherland, even if it is another twenty years, the Germans sold their 1500 horsepower tank engines to the third brother, all the parts and components are produced in Germany, just let the third brother assemble, and the assembled ones can only emit 1200 horsepower, if they use their own production of parts, it is estimated that even 800 horsepower is enough, this is determined by the industrial base.

Of course, now it's just talking on paper, but the theory is combined with practice, the talk is quite in place, very brilliant, the three of them have given high scores, even Ma Panshan, are nodding again and again, in fact, now, the domestic industrial base, is the level of the fifties and sixties abroad, the things you want are too good, I'm afraid you don't have the appetite to swallow it.

"Well, let's move on to the second one." Ma Panshan said.

The second part, written even more sprinkled, the first sentence, it was written very formally, tanks, firepower is king! Whether it is to develop a new second-generation tank or improve our existing tank, we need to introduce the NATO standard L7 105mm tank gun!

Now, NATO's standard is this 105mm tank gun, except for the German Leopard 2 equipped with their own developed 120mm tank gun, the others use this 105mm tank gun.

Compared with their current tank guns, people's technology is quite advanced, which lists the two most important technologies, electroslag remelting steel and body tube self-tightening technology, which is the most critical technology to achieve high pressure tank guns!

To make a cannon, you need to use the best steel to build, this kind of steel, you need to use the technology of electroslag remelting, through the electric current, so that the steel is melted, the magazine becomes electroslag discharged, and the rest is a compact steel ingot, and then enter the process of making cannons.

Without this steel, tank guns could not withstand sufficiently high chamber pressures.

The other is that the body tube is self-tightened, and when making a cannon, the inner chamber is squeezed to make the steel more dense, so that it is naturally stronger and can withstand higher chamber pressure.

Only a higher chamber pressure can have a larger propellant, so that the cannon can be ejected at a greater speed and more powerful.

The introduction of 105 mm tank guns, and at the same time piggyback, the introduction of these gun-making technologies, after that, whether it is a modification of existing tanks, or a new second-generation tank, even if it is their own manufacture of 120 mm smoothbore guns, these technologies can be used.

In fact, there are many articles mentioning 105 mm tank guns, but it is very organized to be able to write such a beautiful article and connect it with the reality of its own side, especially the introduction of these industrial technologies, and even the expansion of the chamber in the later stage.

"This article was written by Li Changjiang. It seems that although he is in the maintenance workshop, he is still very concerned about technology. Ma Panshan sighed.

The two test papers in a row are all written by the personnel in the maintenance workshop, and Ma Panshan can also accept them, because these articles are really well written, which shows that they are really attentive.

In the tank factory, it is not only necessary to use your hands, but also to be able to use your brain, these two articles are typical of using your brain.

So, what should be the highest score?

Ma Panshan finally set his sights on the first score, that is, the test paper where all three of them gave full marks, and when he picked it up, he immediately frowned.

On the urgency of the introduction of Western CNC machine tools.

Looking at this title, Ma Panshan couldn't help but murmur: "This article should be off-topic, right?" ”

At that time, the conversation between Qin Zhenhua and Du Youwen, Ma Panshan heard it clearly, Du Youwen wrote freely that he wanted to introduce Leopard 2 tank technology, so that Qin Zhenhua said that it was off topic, now think about it, those words are reasonable, let's be pragmatic, we must not imagine that we can change from the level of the 50s to the level of the late 70s all of a sudden, and first reach the level of the 60s, which is already very good.

And now, why is the CNC machine tool pulled up again? This thing has nothing to do with this topic.

"Of course not, this is the subject matter, whether it is to improve our existing tanks, or to develop a new second-generation tank, it is inseparable from the process." Qin Zhenhua said: "The process is the most important, just like the transmission system of the M48 tank that we surveyed and copied, why did it work at the beginning, but then it didn't?" It's not about the materials and the processing technology. Director Ma, in our factory, in fact, the most important thing to solve is the problem of high-precision CNC machine tools. ”

After speaking, Qin Zhenhua thought of the CNC machine tool that he had been playing very smoothly, in fact, it was not a CNC machine tool at all.

The real CNC machine tool does not need the user to write the program code at all, what the user needs to do is to give the CNC machine tool a product design drawing, and then, how to process, that is the CNC machine tool itself to calculate to get the plan, the built-in program of the CNC machine tool can do this.

The designer draws the design drawings on the computer, and then the drawings are transmitted to the CNC machine tool for processing, and the specific processing is not required by the designer to intervene.

This is called a real CNC machine tool, if you have this kind of machine tool, you can use yourself to repeatedly modify the code, and then you can process the parts of different sizes of armor-piercing bullets?

As long as you are on the computer, you can move a few data values.

Moreover, this article, written in detail, CNC machine tools, that is just a general concept, there are lathes, milling machines, grinding machines, etc., all kinds of processing tools, if introduced, you can improve your own processing technology by an order of magnitude!

Take the shell of the transmission that has not been poured in the R&D room, if there is a special CNC lathe, the sand mold for pouring is directly carved on the CNC lathe, and the meticulous oil circuit can definitely be easily made.

If only one of these articles can be selected to be introduced, Qin Zhenhua will definitely choose this CNC machine tool to introduce.

Ma Panshan listened to Qin Zhenhua's introduction, and finally nodded: "It seems that I'm still old, and I can't keep up with my concepts, well, look at this article, who wrote it." ”

Unwrapping the part of the name where the glue was glued, Ma Panshan looked at the name on it, and was immediately taken aback: "Wang Erzhu? ”