The real development of investment casting in China is only a few decades. In the past few decades, China's development has been very rapid, and its proportion in the world is very high. For some workpieces with complex structures and not very high precision requirements, if it is difficult to process with CNC or the processing cost is high, such workpieces are especially suitable for investment casting. Even if some parts require precision assembly, we can meet the requirements through local precision CNC machining, thereby reducing costs. Especially for stainless steel castings, it is used in many places. Because of its strong corrosion resistance, high strength and toughness, stainless steel can be used in some harsh environments. For the processing of stainless steel parts, it is nothing more than precision CNC machining, forging processing, stamping processing, casting processing or powder metallurgy processing, etc., and investment casting is a relatively low-cost, high-precision processing method.
SCZY is a professional manufacturer of metal products. Many stainless steel castings we produce are used in marine projects, navigation, medical equipment and other industries. We not only provide metal investment casting processing, but also provide supporting follow-up secondary CNC machining and Surface treatment machining. We can ensure product accuracy requirements and appearance quality requirements.
Stainless Steel Castings,Stainless Steel Casting Parts,Stainless Steel Investment Casting Parts,Stainless Steel Precision Casting, Stainless Steel Investment Casting Shenzhen SCZY Technology Co.,Ltd , https://www.szsczycasting.com
Fan's material classification
Commonly used in the fan material is cast iron, ordinary fans belong to this type of iron shell fan. Fans are also made from other materials, such as FRP fans, PVC fans, aluminum alloy fans and stainless steel fans, etc. The fans made of these materials have good anti-corrosion, anti-abrasion or high-temperature performance.
The gas flow from the fan's gas to the classification fan is the direction that drives the gas when the fan is running. If the gas is flowing in the same direction as the impeller's axis, it is an axial fan. If the gas is centered on the axis of the impeller, it will be centrifugal. Fan. In addition to these two types, there are also diagonal fans and cross-flow fans.
Fan use classification
Fans can be divided into multiple types depending on the purpose, such as exhaust fans, air conditioning fans, and roof fans. These fans are all designed for special purpose, so they are different from ordinary fans in terms of appearance, material, and function. For example, the roof fan can be designed as a bi-directional reversible exhaust fan.
Other categories of fans
Fans can be divided into single-stage pressurized blowers, double-stage pressurized blowers, and multi-stage pressurized blowers, depending on the number of times the airflow is pressurized. For example, a Roots blower is a typical multi-stage pressurized blower. Fans can be divided into push-in fan and draw-out fan according to the designed structure and the installation position of the motor. 
Classification and types of fans
Fans are mechanical devices that are driven by mechanical energy to accomplish gas compression and gas delivery. Fans include categories such as fans, blowers, and compressors, but do not include positive displacement blowers and compressors. There are many types of fans, and the common division is based on the material of the fan, the gas flow of the fan, and the use of the fan.