Multi-channel pneumatic valve of the three main characteristics of pneumatic valve manufacturing process

compared with other mechanical manufacturing technology, the manufacture technology of multi-channel pneumatic valve has the following characteristics: (1) pneumatic valve blank manufacturing process and inspection process more complicated. Pneumatic valve casting thin shell structure called a complex one. Multi-channel pneumatic valve casting requires its smooth surface, clear character, especially the actor, has a thick defects. In order to meet these requirements, casting technology, a series of measures should be taken, such as molding material and water control high refractoriness choice, multi-channel pneumatic valve mode should be layered, in order to ensure water sand play real hardness is a reasonable limit port system and the strict control of casting speed and temperature. Due to the multi-channel pneumatic valve pneumatic valve than normal blank casting casting process complex higher technical requirements. In addition, in addition to the blank check pneumatic valve, multi-channel pneumatic valve position precision and appearance size, and some of the organization, mechanical properties, corrosion resistance and check with non destructive test, pneumatic control valve is also more complex inspection process. Multi-channel pneumatic valve (2) difficult to machining because of many other types of pneumatic valve material, multi-channel pneumatic valve cast iron, carbon steel, high strength, corrosion resistance, most varieties of high hard cutting material is poor, it is difficult to meet the requirements of accuracy and surface roughness of parts. Multi-channel pneumatic valve and pneumatic valve sealing surface geometry is very tall to the requirement of accuracy and surface roughness, thus increased the difficult processing machinery pneumatic valve. At the same time, the poor machinability of pneumatic valve material, multi-channel pneumatic valve, pneumatic valve processing method are presented, cutting tool material, cutting parameters, technical equipment has brought about many new problems. (3) pneumatic valve parts are more difficult to install in the machine structure, shape, complicated, a major part of the multi-channel pneumatic valve pneumatic valve, some places of thin-walled, narrow, rigid. Machine tool processing, positioning and fixture is difficult, so often require complicated special fixture. Some pneumatic valve parts, low precision positioning on the surface of the base, the surface roughness is higher, sometimes even more than the valve of machining surface. Multiplex sealing face of the pneumatic valve and other parts by machining accuracy and surface roughness requirements are very high, it is difficult to ensure machining quality. Therefore, in order to meet the requirements of process, the multi-channel pneumatic valve often need to improve on the surface of the base location accuracy and low surface roughness, or in the processing surface positioning base treatment, thereby increasing the complexity of pneumatic valve manufacturing process.