If you want to imitate a machine, the first difficulty is inaccurate measurement. Especially the engine is a product with too high precision. Many joint parts, bearings, crankshafts and other details require high precision. An error of a few tenths of a millimeter is huge.
Some places can only be seen with a microscope. Even with Liu Lang's super high IQ, he doesn't have microscope glasses.
Some people say why do you want it to be so delicate? It would be fine if it was rougher.
Ordinary machine tools may be rough, but it's okay. At most, you can just replace the parts. It doesn't cost much anyway. For example, the original AOD electric furnace is still far from the German one in terms of precision, but at least it can be used, but its lifespan is longer than the original one.
The factory-produced products are slightly worse, but this difference is negligible for China.
But the engine is not perfect. Under the condition of high temperature, high pressure and high friction, a small error will cause huge wear and tear, and the life of the engine will decrease rapidly. The engine is the heart of the car. An engine overhaul is about the same as a heart surgery. Basically
It's just scrapped.
Not only are the errors inaccurate, but there are also many structures, such as chamfers, curvatures, and surface roughness, which are impossible or extremely difficult to measure.
At that time, someone also proposed turning over the mold, but the biggest problem with turning over the mold is tolerance and tolerance. Any design will leave some margin. These seemingly unimportant things are actually extremely important. When the engine is running, many things will be affected by temperature and
If mechanical movement deforms, then a margin is needed. To figure out the margin, you can only do a lot of test runs later and constantly overturn and redo the above steps to correct it.
In addition, even if you can obtain all the data through accurate measurement, you cannot know the composition of the material. The materials in each part of the engine are completely different, including the cylinder head, cylinder block, piston, crankshaft, and the physical strength and performance requirements of each part.
Different materials are different, and the material selection is also different. In order to squeeze out every bit of performance, a good engine is extremely demanding on materials, and the composition of such materials is more complex.
But having data and materials is not enough. How to process and what the processing technology is.
In addition to these, the most fundamental thing is that we do not have better machine tools. This is the foundation, and the foundation is not enough, let alone the others.
So in the final analysis, there is still a gap in all aspects, but the gap is huge. If there is no comprehensive improvement, there is no need to think about the engine at all.
Of course Liu Lang knew these reasons. He also knew that he could not understand all the engine technologies on his own. Even if he understood all the theoretical data, it would be useless without the tools. But why did he choose Professor Claire's engine major?
Woolen cloth?
Quite simply, he wanted to have access to the most cutting-edge machine tools and equipment in the United States.
Huaxia University has now fully understood the technology of those three machine tools in Germany. Of course, they are third-rate machine tools in Germany, which are almost ten years ahead of China. Through the efforts of Liu Lang, Xiong Huaizhi and everyone else, within one year
The biggest gain is that many students and teachers have gained valuable experience and laid the foundation for further research and development.
If Professor Xiong leads us to develop more advanced machine tools next, perhaps the second generation of Western products, or perhaps the level of one and a half generations, how long will it take?
If we follow SMIC's model, which is to mobilize all departments across the country to engage in research and development at all costs, Professor Xiong thinks it will be possible in seven or eight years.
Spending huge sums of money and taking seven or eight years, in the end it is just possible. Who dares to do it?
In fact, Professor Xiong himself thinks that seven or eight years may be less, and there is a high probability of more than ten years. The European and American machine tool manufacturing systems have been established for hundreds of years, and China's industrial system was established only after the liberation of the People's Republic of China. Innate
It's a lot worse. In addition, in the past thirty years, large-scale
A standardized industrial system has gradually taken shape, and China has missed this great opportunity again. The gap between the two sides may be fifty years, which means that it will take you another fifty years to catch up if others stay where they are.
, if people develop further, I am afraid that this gap will continue to widen.
There is such a huge gap. Liu Lang does not think that the country will have the technical conditions to manufacture engines in a short period of time, but this does not mean that he should learn engine technology, because engine technology is a systematic project that involves all mechanical engineering.
The theory, materials, molds, design, technology, machine tools, etc., only when these technical levels reach their peak can an engine with superior performance be produced.
Liu Lang learned these techniques so that he could get a full picture by looking down from the highest place. What he had to do was to be at the top of the mountain and see all the mountains at a glance, instead of just being in this mountain and not knowing where the clouds were.
This is not too ambitious. Since Western countries have explored a path towards developed industry, why doesn't China follow it? Not only in terms of technology, but more importantly, the integration between various industrial categories. This is Liu Lang
Want to learn something.
Professor Claire kept his word and brought Liu Lang to join his work team from that day on.
Professor Claire is currently working on two projects: McDonnell Douglas' improved engine technology project; Lockheed's new generation missile propulsion project. Among them, McDonnell Douglas' improved engine technology is being carried out in the test area of Stanford University, and the other project is in the test area of Stanford University.
Conducted in New York, both projects are classified as national secrets, especially the latter, and participants need approval from the U.S. government.
Liu Lang is unable to participate. McDonnell Douglas's projects are less confidential, but Liu Lang cannot directly enter the core R&D room. There is a stipulation in the agreement signed between McDonnell Douglas and Claire's working team that all relevant data
It must not be leaked out that Claire's team also includes engineers from McDonnell Douglas. If Liu Lang walks into the core R&D room, Claire will be in trouble.
Of course Liu Lang wouldn't go to the core R&D room. He wouldn't be able to understand it if he did. He only cares about the machining part.
It has its own casting shop, machine shop, assembly shop, panel shop, painting shop and design room. Of course, it is much smaller than the workshops of those factories. The factory is for mass production, and the laboratory is just for testing. The two are in
It is incomparable in terms of scale, but although the sparrow is small, it has all the internal organs.
There are some workshops that Liu Lang cannot enter, such as the assembly workshop, which is a key place where the final product is formed and involves many confidential parts. Only core personnel can enter and exit. At least Liu Lang is not qualified.
However, Liu Lang has no interest in these. They are all finished products. I don't care. What he cares about most is the foundry workshop.
The main manufacturing here is cylinder blocks and spindles, and the raw materials are provided by other companies. Since it is manufacturing, machine tools are indispensable. Liu Lang can see these clearly.