"Haha, manufacturing? How to manufacture? Because it is simple and powerful, the requirements for materials for rotary engines are too high. I believe you should know something about the level of our country's smelting technology. Even the steel of ordinary engines cannot be used.
manufacturing, let alone such a rotary engine.
The engine cylinder body and other simple structural parts are generally formed by metal casting. The specific process is divided into high-pressure casting and low-pressure casting. The metal is melted into a liquid and poured into the mold. The difficulty of this process lies in the residual stress, exhaust, and release agent spray during the cooling and solidification process.
Flooding, etc. lead to the occurrence of defects. Defects reduce the yield and seriously affect the service life, because metal fatigue is the most afraid of defects. Secondly, the quality requirements of the metal material itself are also extremely high, usually cast iron or cast aluminum. We use high-quality casting raw materials
Where in the country has horizontal manufacturing?
Again, the mold must be precise, durable, and adaptable to automatic production. It cannot be said that after a few molds are cast, it will break or leak, or that it will not work if you can only watch and control the heat manually.
The problem of metal casting is a huge problem. To put it bluntly, it has been a problem in China since ancient times. From the sword against the moon scimitar to the current engine manufacturing, it has been this problem. This set of technology is typical of the steam age.
Products are the foundation of all modern industries and the crystallization of the wisdom of several generations or even more than a dozen generations. Our country has not caught up with the steam age, and it was discontinued after the founding of the country. Now there are not many people in the entire country.
In addition, there is mechanical processing, which requires good lathes, turning tools, and turners.
The same part is cut out in different directions and routing, but the lifespan is obviously different. What to do with these skills? The piston of the engine has to move back and forth tens of millions of times in the cylinder bore, and its error requirements are extremely high, and its wall surface processing
A process called honing is required to ensure that the surface of the cylinder bore is wear-resistant and can adhere to an oil film to ensure sealing performance.
At this time, the material, process, and direction of honing come again. If this process is not done well, even if the cylinder bore is bent just a little, the piston's tens of millions of movements will accelerate the aging of the engine. The crankshaft bore is a multi-speed intermittent long hole.
Dimensional accuracy, roundness, coaxiality, and surface roughness are all important
The requirements are very strict. These are the capabilities of CNC lathes. Our country currently does not have such precise lathes. I heard that in island countries, drill bits with a diameter of 0.03 centimeters can be made, but in our country, 0.1
If you can't produce a rotary head with a diameter of 1cm, what do you think we should do?
There is also the assembly process. The assembly inside the engine cannot be done with just hands, but with professional assembly tools. These require experience, technology, and even more time.
Some parts require specific machines for installation, and even the installation sequence of the screws and the tightening force require experience and instruments. If the piston gap is mixed with fine hard particles, how much damage will be caused by grinding it thousands of times.
Therefore, the assembly environment, process, equipment, and technical requirements are very high. What’s more terrible is that if the first two steps are not done well, we will not even have the opportunity to practice assembly. Our country does not even have this kind of equipment. How could there be such a thing?
Skilled workers? No, no!
There is also rubber. Organic materials need to be used in the assembly process. It is no exaggeration to say that rubber is the core material of the internal combustion engine. Whether it is the airtightness of the cylinder or the airtightness of the fuel tank and water tank, rubber plays a decisive role. And our country's high-quality
The rubber is even more blank, all blank.
It is best to also have those main mechanical parts, such as cams, crank connecting rods, gear sets, bearings, chains, and hydraulic parts. Being able to make them is one thing, but being able to use them stably for a long time is another concept...
In the final analysis, there are still two issues: metal materials and mechanical processing. As the saying goes, if you want to attack the target first, you must sharpen the tool first, so when you make iron, you still need to be hard. Once you have the bottom layer, you have everything."
When it comes to mechanical processing, Xiong Huaizhi is really eloquent. He has a very good understanding of the current foreign situation and the weaknesses of the domestic industry, and his analysis is very thorough.
"This Professor Xiong...is really full of enthusiasm and has nowhere to use it!"
Liu Lang sighed endlessly in his heart. If the country could reuse people like Xiong Huaizhi and let him lead the country's industrial development, he believed that the country's industrial foundation would not be so weak.
In fact, there are definitely not a few people like Xiong Huaizhi in the entire country. Their ability is no less than that of foreign experts in the same industry, and may even be better than theirs. However, that era delayed them and the country itself. Now that the country has implemented reforms,
Open up, these people are already old. For example, Xiong Huaizhi is already seventy years old. How much energy do they still have to train students?
In addition, the national leaders have not yet realized the impact of industrial manufacturing on the country's future. When they do, these people and their own skills will have returned to dust.
"Professor Xiong, don't worry, I will learn this craft well and make your wish finally come true."
Liu Lang said solemnly to Xiong Huaizhi.
"Okay! Okay! Liu Lang, if you have such ambition, I believe you will succeed. When the time comes, I will be able to rest in peace even under the wine fountain."
Xiong Huaizhi patted Liu Lang's helmet, his eyes filled with relief.
Xiong Huaizhi also knew Liu Lang's ability. He could memorize the parts of a machine just by looking at it, so he took Liu Lang to see many machines in the laboratory. Of course, they were all small machines. If they were large ones, I'm afraid Liu Lang would
Lang was about to faint to the ground because of overuse of his brain. There are not many mechanical parts like car engines, sensors, etc., but the requirements for materials are very high. This is a metallurgical problem. Liu Lang has not learned yet.
He learned too many things, but he kept all the structures of these machines firmly in his mind.
For more than two hours, Liu Lang memorized the components of an in-line engine and a V-shaped engine, as well as a hydraulic pump and sensors. Plus Xiong Huaizhi explained to him on the side, today's two
It took just over an hour, but it was very rewarding!
"Oh! It's four o'clock, it's getting late, Liu Lang, you should go back and eat!"
Xiong Huaizhi looked at his watch and said to Liu Lang.
"Well, okay, Professor Xiong, I'm leaving then!"
When it came to eating, Liu Lang was really hungry. Although the past two hours or so were not as good as that time when he fainted, they consumed a lot of energy. Fortunately, he took an apple from home and ate it, otherwise he would be afraid
It's about sitting on a stool and taking a good rest.
Liu Lang bid farewell to Xiong Huaizhi and walked to the dormitory alone. It wasn't time to eat yet, so he might as well go back to the dormitory to take a look. Jun Song, Lin Hai and the others might have questions to ask him again.