Chapter 665 Inspection of the Second Machine Factory
The night is quiet, and the cool night breeze blows on your face, making people feel a burst of comfort. Spring returns to the earth, everything is revived, and Yiji Factory has ushered in a new and vibrant era.
Qin Zhenhua walked on the road of the factory, looking at the grass and trees of the factory, and was full of confidence in the future, building tanks and the most advanced tanks in the world. This is his greatest expectation. He will do this for this cause.
Struggle for life!
"Zhenhua, today's report is good." At this moment, Mr. Huang next to him spoke: "Tomorrow, Mr. Zhang will go to the Second Machinery Factory to check it out, so you can go with him."
Second Machine Factory? Qin Zhenhua looked at Mr. Huang strangely, not knowing what he wanted to express.
Second Machine Factory is mainly a gunmaker. Since Mr. Zhang came to Grassland City, it is impossible to only inspect the first machine factory. Second Machine Factory, or even steel factory, may go over and see it, but this is worthwhile.
Accompany yourself?
"The caliber selection of our tank guns was originally handed over this task to you, so you have to prepare a report that may be used tomorrow." Mr. Huang said to Qin Zhenhua.
Upon hearing this news, Qin Zhenhua was immediately excited: "Yes."
The engine has been made, and the tank guns are also going to make the decision?
As for the caliber selection of tank guns, Qin Zhenhua has a say. After all, the advanced shells were first created by him. Later, during the meeting, everyone argued endlessly and couldn't come to a conclusion, so in the end,
I first treated it as a legacy project and handed it over to Qin Zhenhua to do an analysis report. After so long, a complete idea has been formed in his mind.
Now, a lot of specific materials have been written, sorted out, and published tomorrow!
It seems that this will be a sleepless night.
The next day, Second Machine Factory.
"This is the equipment for electroslag-replenishing steel that we introduced from Austria." Standing in front of the huge device, Xie Huimin's face was filled with excitement, and he introduced to Mr. Zhang, even his voice seemed to be trembling.
"If you want to make cannons, the quality of the steel must be good. In the past, our gun steel had insufficient performance. In order to ensure the chamber pressure, we could only use thicker gun barrels. Now, the 105mm tank gun we built is more than 100
A millimeter tank gun weighs more than 30% lighter, which is the benefit of advanced technology.”
At this time, the refining work was underway in the electroslag remelting furnace, and the steel ingots melted again inside, and the slag was floating on the molten steel water, realizing the refining of the steel ingots.
"In addition to making guns, steel ingots after electroslag remelting can be used to make various metal parts due to their good quality, and can even be directly cast instead of forging, simplifying production processes and improving the utilization rate of metals. For example,
, the Black Panther engine in Yimai Factory is built with our electric slag remelting steel.”
Speaking of this, Xie Huimin's face was filled with a proud smile, and his words also shocked many people.
What? The Black Panther engine uses cast steel pistons?
The pistons of the engine are made of steel and are generally used only by low-level engines to save costs. High-end engines have already started to use aluminum pistons. The aluminum pistons are light in weight and are back and forth.
The inertia is low during movement, so it is very suitable for engines, especially those with high speed engines.
As for steel pistons, what are the benefits besides the low cost?
Of course, there are benefits. Ordinary steel must have low cost, but the cost of this electroslag-refilling steel is not low! Moreover, using steel pistons can naturally increase the strength of the piston!
To achieve power improvement, it will inevitably mean that the combustion inside the engine is more intense. Aluminum pistons are more likely to deform at high temperatures. The steel ones are different, and the steel ones are also
Better.
In order to increase the engine power, replacing steel pistons is not a reversal in history. In later generations, there is also such a technical route.
At that time, Dongfeng Tianlong Heavy Truck used Renault's DCI engine and was divided into different horsepower, 340, 375 and 420 horsepower, etc.
Among them, the DCI375 engine had a lot of problems. After users used it for a few months, the top of the piston cracked!
This is because it directly uses the aluminum piston of the 340 engine. There is no problem on the 340 engine. However, when it comes to the 375 engine, as the power increases, the piston cannot withstand the pressure, while it has never appeared on the 420 engine.
However, because this engine is more powerful, the designer knows that aluminum pistons cannot withstand it, so when they leave the factory, they use the pistons with steel-top aluminum skirts.
Of course, with the advancement of technology in that era, steel pistons were actually not called appropriate. This is a composite solution. The one that bears the strong gas impact force inside the cylinder is steel, and in order to reduce the mass below, use
It's still aluminum, which is a composite solution, but there is no such technology yet. Besides, one thousand horsepower is not the end point, and the power must be continued to be enhanced. Therefore, when designing, they used electric slag remelting.
steel.
The cooperation between the Second Machine Factory and the First Machine Factory is very extensive. After all, both factories are in the grassland city, and this set of equipment was imported back then, which was closely related to Qin Zhenhua.
Mr. Zhang looked at it very seriously, listened to the introduction, and then continued to move forward and saw the process of the tank gun being processed.
After the gun steel of the tank gun is refined, deep hole processing is required. A hole is drilled inside the gun steel. This uses an ultra-long drill bit, which is quite a test of technology, because during this processing process, the outside is
It is invisible and cannot be viewed directly. It is also necessary to ensure that the processing must achieve high accuracy. In addition, slender pipe fittings are prone to bending and deformation during processing.
"This master has been working in the barrel processing for decades and has a lot of experience." Xie Huimin introduced the operator beside Mr. Zhang. The middle-aged master was also extremely excited and shook hands with Mr. Zhang.
This is a craftsman from a great country! If you want to develop industry, you must have a group of people who are meticulously studying technology in the workshop. There are many one-machine factory. What impressed Qin Zhenhua the most was of course that his left hand was already disabled and was still studying welding.
A skilled old welder.
There are also many in the Second Machine Factory, and this one is one of them that is engaged in deep processing of gun barrels.
His skills are top-notch in the country!
After drilling, you have to use a hammer bed. The drilling machine only drills through one hole, while the hammer bed gradually hammers the hole into molding.
These are rough processing. After completion, the necessary process treatment must be performed on the barrel body. The rifled gun must be rifled, the body tube must be self-tightened, chrome plated, and surface treatment, heat treatment, non-destructive flaw detection, etc.
Walking a circle along the production line of the gun barrel, the morning time passed. At the end of the production line, looking at the 105mm tank gun produced, Mr. Zhang was also very moved: "With this kind of tank gun, we will no longer
Don't worry about the torrent of armor in the north!"
"However, this is a technology that Europe has lagged behind. The times are calling us. Our second-generation tanks and third-generation tanks need tank guns with larger caliber."