"Haha, how to manufacture? It is precisely because of simplicity and high power that the requirements for materials of rotary engines are too high and too high, what is the level of smelting technology in our country, I believe you should also know some, even the steel of ordinary engines cannot be manufactured, let alone this rotary engine.

The main body of the engine cylinder and other simple structural parts are generally cast and formed by metal casting, and 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, release agent spray and so on in the process of cooling and solidification, which leads to the occurrence of defects, and the defects reduce the yield rate, and seriously affect the life, because metal fatigue is most afraid of defects. Secondly, the quality requirements of metal materials themselves are also extremely high, generally cast iron or cast aluminum, where is the level of manufacturing of high-quality casting raw materials in our country?

Again, the mold should be precise, durable, and suitable for automatic production, and it cannot be said that the casting of a few molds will be broken or leaked, or it can only be manually watched and mastered that is not good.

The problem of metal casting is a big problem, and it is unceremoniously said that it is a problem in China from ancient times to the present, from the sword against the full moon scimitar to the current engine manufacturing. This set of technology is a typical product of the steam age, is the foundation of all modern industry, is the crystallization of the wisdom of several generations or even more than ten generations, our country did not catch up with the steam age, after the founding of the People's Republic of China and broke the gear, now the whole country can not find many people.

In addition, there is machining, to have a good lathe, turning tools, lathes.

The same part, choose a different direction and route cut out, but the life is obviously different. These skills, what to do. The piston of the engine has to move back and forth in the cylinder bore for tens of millions of times, and its error requirements are extremely high, and the wall surface processing requires a process, called honing, to ensure that the surface of the cylinder bore is wear-resistant, and a layer of oil film can be attached to ensure the sealing performance.

At this time, the material, process, and direction of honing come again, and this process is not good, even if the cylinder bore is bent a little bit, the movement of the piston thousands of times will accelerate the aging of the engine. The crankshaft hole is a multi-gear intermittent long hole, dimensional accuracy, roundness, coaxiality, surface roughness each of the requirements are very strict, these are the ability of CNC lathes, our country does not have such an accurate lathe now, I heard that in the island country can manufacture a drill bit with a diameter of 0.03 cm, but in our country, 0.1 cm rotor can not be produced, what do you say?

In addition, there is an assembly process, and the assembly inside the engine is not a manual assembly, but a professional assembly tool. These require experience, technology, and even more time.

Some parts require a specific machine to install, and even the installation sequence of the screws, the tightening force requires experience and equipment, and if the piston gap is mixed with fine hard particles, how much damage will be caused by thousands of times of grinding.

Therefore, the assembly environment, process, equipment, and technical requirements are very high, and what is worse is that if the first two steps are not good, we don't even have the opportunity to practice, and our country doesn't even have this kind of equipment, where will there be such skilled workers? No, no!

There is also rubber, organic materials need to be used in the assembly process, 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 is a decisive role. And our country's high-quality rubber is a blank, all blank.

It is better to have those major mechanical parts, such as cams, crank connecting rods, gear sets, bearings, chains, hydraulic parts, which can be made is one thing, and it is another concept .........to be able to use it stably for a long time.

In the final analysis, there are two problems: metal materials and machining. As the saying goes, if you want to attack it first, you must first sharpen your tools, so you need to be hard to strike iron, and if you have the bottom, you have everything. ”

When it comes to machining, Xiong Huaizhi is really gushing, he is very familiar with the current situation abroad, and also has a very good understanding of the weaknesses of the domestic industry, and the analysis is also very thorough.

Professor Xiong......... It's such a passion that has nowhere to use!"

Liu Lang sighed endlessly in his heart, if the country can reuse a person like Xiong Huaizhi and let him lead the country's industrial development, I believe that the country's industrial foundation will not be so weak.

In fact, there are definitely not a few people like Xiong Huaizhi in the whole country, their ability is no less than that of foreign experts in the same industry, and even stronger than each other, but that era delayed them, and also delayed the country itself, and now that the country implements reform and opening up, these people are already dying, such as Xiong Huaizhi is already seventy years old, how much energy do they have to cultivate students?

In addition, the country's leaders have not yet reacted to the impact of industrial manufacturing on the country's future, and when they do, these people and their own skills will be dusted and dusted.

"Professor Xiong, don't worry, I will learn this craft well, so that your wish will finally come true. ”

Liu Lang said solemnly to Xiong Huaizhi.

"Okay, okay! Liu Lang, if you have this ambition, I believe you will succeed, and when the time comes, I will be able to look under the Jiuquan." ”

Xiong Huaizhi patted Liu Lang's hard hat, and his eyes were full of relief.

Xiong Huaizhi also knew Liu Lang's ability, as long as he looked at it, he could write down the parts of the machine, so he took Liu Lang to see a lot of machinery in the laboratory, of course, they are all small machines, if it is large, I am afraid that Liu Lang will faint to the ground again because of excessive use of the brain, what car engine, Sensors and so on, these mechanical parts are not very many, but the requirements for materials are very high, this is a metallurgical problem, Liu Lang has not learned too much now, but he has all the structures of these machinery firmly in mind.

For more than two hours, Liu Lang wrote down the composition of an in-line engine and a V-shaped engine, as well as a hydraulic pump and sensor, plus Xiong Huaizhi explained to him on the side, today's two hours are full of harvest!

"Oh, it's four o'clock, it's not early, Liu Lang, go back to dinner!"

Xiong Huaizhi looked at his watch and said to Liu Lang.

"Well, okay, Professor Xiong, then I'm leaving!"

Speaking of eating, Liu Lang really felt hungry, although the time of more than two hours just now was not as good as that fainting, but the energy consumed was also very much, fortunately, he took an apple from home and ate it, otherwise he was afraid that he would have to sit on the stool and rest well.

Liu Lang said goodbye to Xiong Huaizhi, and walked to the dormitory by himself, it was not time to eat yet, so he should go back to the dormitory first, Jun Song and Lin Hai were afraid that they had questions to ask themselves.