The third place test paper belongs to Zhang Xiangyang. Zhang Xiangyang was originally a test driver. He naturally has some insights into the power system of tanks. Moreover, this does not directly require the world's advanced level, but is well-founded and combined with his own experience.
Actually, a reasonable plan was proposed.
If you ignore the current industrial base and rashly build a 1,500-horsepower engine, it will definitely be a disaster in production.
Needless to say about the current motherland, even if it takes another twenty years, the Germans will sell their 1,500-horsepower tank engine to the third brother. All the parts are produced in Germany, and they will only let the third brother assemble and assemble it.
What comes out can only produce 1,200 horsepower. If they use their own production parts, it is estimated that even 800 horsepower is not enough. This is determined by the industrial base.
Of course, it's just talk on paper now, but the theory is combined with practice, and the talk is quite good. All three people gave high marks. Even Ma Panshan nodded repeatedly. In fact, the domestic industrial base now is
At the level of foreign countries in the 1950s and 1960s, the things I want are so good that I might not have the appetite to swallow them.
"Well, let's look at the second one." Ma Panshan said.
The second one was written even more eloquently. The first sentence was very formal. Tanks and firepower are king! Whether we are developing new second-generation tanks or improving our existing tanks, we need to introduce
NATO standard L7 105mm tank gun!
Now, the NATO standard is this 105mm tank gun. Except for the German Leopard 2, which is equipped with a 120mm tank gun developed by them, the others all use this 105mm tank gun.
Compared with our current tank guns, their technology is quite advanced. It lists the two most important technologies, electroslag remelting steel and barrel self-tightening technology. This is the ultimate way to realize high chamber pressure tank guns.
Key technology!
To build a cannon, you need to use the best steel. This kind of steel requires the use of electroslag remelting technology. The steel is melted by electric current. The magazines in it turn into electroslag and are discharged. The remainder is a compact steel ingot.
, and then enter the process of making the cannon.
Without this steel, tank guns would not be able to withstand high enough chamber pressures.
The other type is that the barrel is self-tightening. When making the cannon, the inner bore is squeezed to make the steel denser, which naturally makes it stronger and can withstand higher chamber pressures.
Only with higher chamber pressure can there be larger propellant, making the projectile faster and more powerful when ejected.
Introduce the 105mm tank gun, and at the same time introduce these gun-making technologies. After that, whether it is to modify existing tanks, or new second-generation tanks, or even make your own 120mm smoothbore gun, you can
Use these techniques.
In fact, there are many articles mentioning the 105mm tank gun, but the article can be written so beautifully and linked to our own reality, especially the introduction of these industrial technologies, and even the later expansion of the bore, and it is very logical.
Therefore, it can stand out and have a unique perspective.
"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 consecutive test papers were all written by staff in the maintenance workshop, and Ma Panshan could accept it, because these articles were indeed well written, showing that they were really careful.
In the tank factory, you not only have to use your hands, but you also have to use your brain. These two articles are both typical examples of using your brain.
So, what should be the highest score?
Ma Panshan finally set his sights on the test paper with the highest score, which was the one that all three people gave full marks to. When he picked it up and looked at it, he immediately frowned.
On the urgency of introducing Western CNC machine tools.
Looking at this title, Ma Panshan couldn't help but murmured: "This article must be off-topic, right?"
At that time, Ma Panshan heard the conversation between Qin Zhenhua and Du Youwen clearly. Du Youwen wrote eloquently about introducing Leopard 2 tank technology, which Qin Zhenhua thought was off topic. Now that I think about it, those words make sense. We must be pragmatic.
Well, we must not imagine that we can change from the level of the 1950s to the level of the late 1970s all at once. We should first reach the level of the 1960s, which is already very good.
And now, why are we talking about CNC machine tools again? This thing has nothing to do with this topic.
"Of course not, this is the main theme. Whether we are improving our existing tanks or developing new second-generation tanks, we cannot do without craftsmanship." Qin Zhenhua said: "Craftsmanship is the most important, just like
We were surveying and mapping the transmission system of the M48 tank that we copied. Why did it work at first, but then stopped working? It’s not a matter of materials and processing technology. Director Ma, in fact, the most important thing to solve in our factory is high-precision CNC.
Machine tool problems.”
After finishing speaking, Qin Zhenhua thought of the CNC machine tool he had been playing with so smoothly. In fact, it was not a CNC machine tool at all.
A real CNC machine tool does not require the user to write program code at all. All the user needs to do is to give the CNC machine tool a product design drawing, and then how to process it is the CNC machine tool's own calculations to get the plan. The CNC machine tool's built-in program
That's all you can do.
The designer draws the design drawing on the computer, and then passes the drawing to the CNC machine tool for processing. The specific processing method does not require the intervention of the designer.
This is what we call a real CNC machine tool. If we had this kind of machine tool, would we have to modify the code repeatedly before we could process parts of armor-piercing projectiles with different sizes?
Just move a few data values on the computer.
Moreover, this article is even more detailed. CNC machine tools are just a general concept. There are lathes, milling machines, grinders, etc. Various processing tools, if introduced, can improve one's processing technology by an order of magnitude.
!
Take the transmission shell that has never been poured in the R&D room. If there was a special CNC lathe, the sand mold used for pouring would have been carved directly on the CNC lathe. The detailed oil circuit would also be absolutely perfect.
Can be made easily.
If only one of these articles could be chosen to introduce, Qin Zhenhua would definitely choose this CNC machine tool to introduce.
Ma Panshan listened to Qin Zhenhua's introduction and finally nodded: "It seems that I am still old and my ideas can't keep up. Well, let's see who wrote this article."
After removing the glued name part, Ma Panshan looked at the name on it and was immediately shocked: "Wang Erzhu?"