Chapter 289

The way to increase the power of aero-engine is very simple, that is, to increase the temperature of the gas that drives the turbine to rotate. In this way, both the combustion chamber and the turbine blade can not withstand the high temperature burning, and the result is either burned or the whole turbine is blown up.

At present, the gas turbine power plant made by the jet power office of Tengfei plant is stuck here, although Qian Qiang and Yan Tiancheng and others copied the t-62t gas turbine power plant of Hamilton company bit by bit.

Even if the size of each part is the same as that of the original sample, even so, once the imitated product is put on the test bench, the longest time it takes is less than 40 hours.

however, the original t-62t gas turbine power plant can easily run for three to four hundred hours.

The reason why there is such a huge gap is that there is too much difference in the metallurgical field between the two countries. The United States is also a superpower. The reason why the world is like this is not the matter of materials, but the fact that it can not meet such advanced manufacturing requirements in processing and manufacturing.

In fact, the research on film cooling technology has been started in China since the 1970s, and the relevant calculation and engineering methods have formed a system for a long time.

Although only a few holes are made on the parts, these holes are very particular. Not only the edge finish of the holes is required to be extremely high, but also the holes can not form high-temperature coating around them, and there can be no cracks around them.

There's no way. The aeroengine is a very precise thing, and even the slightest error may cause the engine to be scrapped. Therefore, these small holes that form the air mold cooling are not impressive, but they are of great significance. An careless and expensive aeroengine may be gone.

The problem is that if these three requirements are carried out alone, a factory with a good foundation will be able to cope with them, but if they are combined, none of them will be able to complete them in the whole country.

In fact, not only in China, but also in the world, there are no more than five enterprises that can do these three conditions well at the same time. Otherwise, the threshold of aero-engine is so high that a small hole in a turbine blade can shut a lot of enterprises and even the country out.

Zhuang Jianye wanted to start a turbine power plant, but the basic materials were not good. He turned to tackling the key problems of cooling technology. Qian Qiang and others had such a solid theory that they naturally understood the importance of film cooling.

Of course, it's the whole country that looks for competent units to see if they can make such holes. As a result, they have gone to many places and tried a lot of equipment. Either the high-temperature coating around the holes is too thick, or the finish is not enough, which leads to the turbine blades of gas turbine power plants often break and stop.

It's not that Tengfei factory has never thought of buying advanced blowhole processing equipment from abroad. The problem is that this kind of equipment is the same as multi impeller shot peening machine. No matter how much money you give, people won't sell you, because it's really a strategic resource and is under control.

Because of this, Tengfei's turbine power plant has almost stopped. It can't solve the problems of materials and manufacturing, so the whole project can only crawl at tortoise speed.

Just when Zhuang Jianye was at a loss, H company found the hope of breaking the situation in adversity from the messy data collected by Japan.

Because after a lot of theoretical explanations about film cooling, Japanese experts with a strong research spirit put forward a very feasible hypothesis, that is, using hollow titanium metal tube electrode, the surface is covered with insulating resin, the top is exposed metal, and there is a negative voltage of 8 to 12V between the workpiece and the electrode.

When the strong acid electrolyte flows in from the titanium electrode tube, as soon as the positive and negative electrodes fuse, a magical ionization phenomenon will be formed, and a small process hole can be formed on the workpiece instantly.

Because the electrochemical reaction principle is adopted, and it is not the forced drilling of heat integration type, the smoothness of the process hole is well controlled, not to mention that there is no coating and crack.

Seeing this, Zhuang Jianye is smiling. This is not the core equipment of film cooling hole of turbine blade, electrochemical drilling equipment, ECM device. What you want is what you want.