The single crystal blade in aero engine is the most critical part of the aviation products, which is the most important part of the aviation products, which determines the performance of the aero-engine directly. A 1000 kg thrust engine center, the core component is 60 single crystal blades. The engine will air compression pressure in the combustion chamber, combustion occurs in the limited space and fuel, resulting in violent gas jet, pushing these blades to rotate at a high speed, burst out amazing power, each blade output horsepower is equivalent to a 2 liter SUV car. It is understood that the one thousand kg class engine, high speed at more than 30000 rpm to forty thousand rpm, the tangential velocity is about 450 meters per second, the temperature is about more than 1720 degrees.
The single crystal blade in aero engine is the most critical part of the aviation products, which is the most important part of the aviation products, which determines the performance of the aero-engine directly. A 1000 kg thrust engine center, the core component is 60 single crystal blades. The engine will air compression pressure in the combustion chamber, combustion occurs in the limited space and fuel, resulting in violent gas jet, pushing these blades to rotate at a high speed, burst out amazing power, each blade output horsepower is equivalent to a 2 liter SUV car. It is understood that the one thousand kg class engine, high speed at more than 30000 rpm to forty thousand rpm, the tangential velocity is about 450 meters per second, the temperature is about more than 1720 degrees.
In order to prevent melting, engineers have made each blade hollow, and a sophisticated and complex cooling system is also designed in the middle. The heat that the cooling system takes away can boil a pot of water in 1/20 seconds, or even less time. But at 1700 degrees of heat, the ordinary metal is still not heat enough. Therefore, the production of single crystal blades can not be separated from a precious rare metal rhenium.
Rhenium is the latest natural element found in humans, and it is smaller than all rare earth elements in the earth's crust, which is more difficult to obtain than diamonds. The world's proven rhenium reserves are only about 2500 tons, rhenium prices are similar to platinum prices, a gram of about three hundred dollars. To purify rhenium metal, is a Chengdu company's parent company, in 2010, the company laid the probe to pour rhenium molybdenum mine mine in Luonan County of Shaanxi province and its subordinate Huanglong, reserves of 176 tons, accounting for about 7% of global reserves, after Chile, the United States, Russia and Kazakhstan. The company believes that although foreign technology blockade on the production of single crystal blades, but Chinese must think of ways to solve this technology, we not only for suppliers, to supply rare elements to foreign companies, the Chinese without help." The head of the company expresses. Finally, the enterprise overcame many difficulties and produced qualified single crystal blades.
