"Our tank guns are missing the thermal sheath." Qin Zhenhua said: "This project was originally the second batch of projects introduced by the British. Now, I hope our relevant departments can work harder."
"Hot sheath? Is that hot sheath really useful?" At this time, Xie Huimin, who was standing beside him, made a voice again: "In the past, our gun barrels did not have thermal sheath, so didn't they still use them?"
"That's right, it was like this before, but how accurate can the previous tank guns be fired over two thousand meters?" Qin Zhenhua asked.
Now, many people in China do not realize the importance of this problem. Even this second-machine factory specializing in building artillery has not paid so much attention. We did not have it before, so didn’t we still use it?
However, the accuracy is different.
The basic idea of thermal sheath is that in hot weather, the temperature of the gun barrel increases on the side where the gun barrel is sunken. The principle of thermal expansion and contraction shows that the side with high temperature expands, so the gun barrel bends down, droops its head, and becomes wilted by the sun.
Of course, this arc cannot be seen with the naked eye, but it has an impact when shooting, so it is not accurate.
What is the impact?
If, as before, it is mainly aimed at the sight of the eyes, and it is enough to hit five or six hundred meters. In this case, thermal expansion and contraction really cannot affect much. However, if you want to pursue accurate aiming at a distance of two thousand meters, the difference in heat wave cooling and contraction must be taken into account. After all, a slight mistake can be greatly affected, and a slight deformation will be amplified by the distance factor.
Our side has introduced the L7 tank gun. What we are interested in is its outstanding performance, high chamber pressure, long range and high storage speed. We can't be unable to hit it accurately, right?
In fact, many domestic weapons and equipment are based on the Soviet Union's viewpoint. In the Soviet system, it is important to be manufactured quickly during wartime, and the accuracy requirements are not high. In the Western world, there is no way to assemble equipment or fight for people, so you can only try your best to improve your long-distance strike ability and strive to eliminate the enemy more before the other party gets close. These are two completely different ideas.
Take sniper rifles as an example. If domestically produced, if they are placed internationally, they are not as standard as sniper rifles. When domestic snipers first learn about the accuracy of Western sniper rifles, the feeling and psychological gap are simply shocking.
The principle of this thermal jacket is also very simple. Since it is expanded by the sun, then shouldn't I just let the two sides of it be consistent?
Thermal sheath is an aluminum round tube, which is placed outside the entire tank gun barrel. In this way, because aluminum has good thermal conductivity, after wrapping the gun barrel, the energy accumulated on one side of the sun can be transmitted to the other side. In this way, the temperature difference between the two sides of the gun barrel will be very small, and the degree of deformation will be very small, which is more accurate than without the heat sheath.
This factor is very important at a distance of two thousand meters.
Simply put, it is just to hide the shade.
However, although this small aluminum alloy sleeve is very difficult to manufacture. It has to be cut out from a whole piece of aluminum alloy. There is too much waste and the cost is quite high.
There is no effort on this thermal sheath in China at present, and the reasons are naturally of many aspects.
"Yes, in the future, we must move closer to Western standards. This thermal jacket must be made." Huang Lao said: "We should urge the relevant departments."
Even if the hot sheath matter is settled like this.
The visit and inspection were not long, because everyone was still concerned about the battle half of the earth. That battle was very attractive to the soldiers. Therefore, after the visit, Mr. Huang’s itinerary was over.
After Huang Lao and his group left, the people from Yituo Factory left unwillingly, but Xie Huimin and others did not intend to leave.
"Old Xie, what are you waiting for? Are you having dinner here? Let's go to the cafeteria and we treat guests to our first-machine factory." Seeing Xie Huimin's unwillingness to leave, Zhao Guodong quipped.
"Okay, go to your cafeteria to eat. I heard that your Yimai Factory has a very good food now, and braised pork is not limited to supply." Xie Huimin was not polite.
In the past, the Yima Factory had a special cadre canteen. However, now, after Zhao Guodong became the factory director, the leaders' small stoves were cancelled, and everyone was making meals in the same canteen, and the taste and quality of the food were also raised.
Everyone is working hard to create value for the factory. You can't let everyone's stomach be wronged, right? After Zhao Guodong came to power, he introduced strict systems on the one hand, and on the other hand, he gave workers a real benefit in life. Therefore, it is easy to impress many people.
Of course, the rules and regulations have also been refined. In the past, the phenomenon of an employee taking food back to a family of people was curbed, and the public and private sectors were clearly distinguished.
Now that I have entered the cafeteria, it is actually past the peak of dining. There are not many people inside. I sit in front of the table in the cafeteria, holding a big flower bowl, and everyone eats very quickly.
"Old Zhao, your machine factory is eating meat now." Xie Huimin said.
"Yes, we eat meat, which is what we can eat with our own ability. If we want to drink it with our broth? It depends on whether we have the ability. If we have the ability, we will sit down and eat meat together, just like you, don't you sit down and eat meat?"
"This is me alone. All of us in the factory and everyone is waiting to eat meat."
Xie Huimin said solemnly. Seeing that the first machine factory was about to develop and entered a new stage, their second machine factory also wanted to develop more.
"Zhenhua, think of a way for our second machine factory to see if there is any way to export some equipment." Xie Huimin looked at Qin Zhenhua again.
"You can do your second machine factory's business by yourself. If you ask me for advice, it will not be given in vain. I will charge you." Qin Zhenhua said.
"It's easy to say, it's easy to say. If you give us some advice, you'll have to do as much as you want."
"Then I want to draw 10% of the profit?" Qin Zhenhua asked.
The expression on Xie Huimin's face suddenly became stiff. Qin Zhenhua is too dark, right?
Looking at his appearance, Zhao Guodong couldn't help laughing: "Haha, Lao Xie, Zhenhua is teasing you."
Now, Xie Huimin realized that they were all brother factories. As long as there was no competition, how could Qin Zhenhua really come to them for benefits? This violates the principles of organization.
"Look, this is the landlord Laocai, this is Huang Shiren." Qin Zhenhua said: "Get out of nothing."
"Zhenhua, just say it. We can hire you as the director of the sales department of our second machine factory. You don't have to stay in a regular position, just put on the name and get a salary." Xie Huimin said.
"Forget this, in fact, it's easy for you to make money." Qin Zhenhua said: "At present, our exporting countries need the most are tanks and armored vehicles. You can't produce tanks, but you should have the technology to make 63 armored vehicles, right?"
"Fight business with the Capital Factory?" Xie Huimin took a breath of air conditioning.