The crankshaft is an important part of the engine that bears impact load and transmits power. Among the five major parts of the engine, the crankshaft is Z, which is difficult to ensure the processing quality. Due to the poor working conditions of the crankshaft, the requirements for crankshaft material, blank processing technology, precision, surface roughness, heat treatment, surface strengthening, dynamic balance and so on are very strict. If the quality of any link is not guaranteed, it will seriously affect the service life of the crankshaft and the reliability of the whole machine.
The traditional crankshaft is generally made of medium carbon steel or medium carbon alloy steel by die forging. The surface of the journal is subject to high-frequency quenching or nitriding treatment. After fine grinding, it reaches a high surface hardness and surface roughness. However, despite this, the traditional material crankshaft can not meet the requirements of the rapid development of crankshaft production and use.
Why choose high specific gravity tungsten alloy crankshaft? High specific gravity tungsten alloy crankshaft has the following advantages:
① Significant proportion: the proportion of tungsten alloy is as high as 16.0 ~ 19.0g/cm3, twice that of steel.
② Small volume: the characteristics of large ratio determine that the traditional crankshaft with the same weight has a smaller volume compared with the high ratio alloy crankshaft.
③ Excellent hardness: high specific gravity tungsten alloy crankshaft has the strength that traditional materials are difficult to achieve.
④ Excellent fatigue resistance: tungsten alloy material has excellent wear resistance, which is a good property that crankshaft must have.
⑤ Super wear resistance: excellent wear resistance is another good property of high specific gravity tungsten alloy as crankshaft.
⑥ Excellent shock resistance: another excellent characteristic of high specific gravity tungsten alloy. Because it is higher than the specific gravity and shock resistance of general materials, the crankshaft with high specific gravity can show incomparable advantages of other materials in harsh working environment.
⑦ High temperature resistance: tungsten alloy with high specific gravity has a very high melting point (the melting point of tungsten is 3410 ℃)
Another feature of high specific gravity tungsten alloy crankshaft in use is that it is higher than the specific gravity of other materials. In machinery, ships, aircraft and other places that need counterweight but have relatively small volume requirements, high specific gravity tungsten alloy is Zui's best choice! Therefore, tungsten alloy crankshafts are widely used in some high-performance engines, such as racing cars, rowing, ships, automobiles and so on.
