In the early history of valve casting, limited by the material science and casting technology at the time, the valve more traditional metal materials, such as cast iron. Although these materials have a certain degree of strength and wear resistance, but in the face of increasing engine performance and efficiency requirements, people turned out to be more dissatisfied with the conditions at the time, began to gradually appear to be unable to do, and thus began to actively explore more high-quality, durable valve materials.
The introduction of cast iron ball technology for the valve casting has brought a new breakthrough. Cast iron material has good casting properties and high mechanical strength, coupled with improved casting process, such as the use of more accurate mold design and more advanced casting equipment, so that the cast iron valve in the dimensional accuracy, surface quality and performance have been significantly improved.
Subsequently, the emergence of 4 check valve cast iron technology further promoted the development of valve casting technology. This technology realizes more complex fluid control functions by setting multiple channels inside the valve, which improves the efficiency of engine intake and exhaust. At the same time, the excellent properties of the cast iron material allowed it to be used in extreme operating environments and ensured stability and durability.
Into the modern era, the emergence and introduction of ductile iron butterfly valve technology, but also the valve casting technology up to a new height and new level. Ductile iron as a high-strength, high toughness of the cast iron material its unique microstructure makes it in withstand high pressure and high temperature performance.
From the initial cast iron valve to today's ductile iron butterfly valve technology, valve casting technology has experienced from simple to complex, from low to high level of evolution. This process not only incorporates many advanced materials and processes, but also witnesses the continuous upgrading of human pursuit of engine performance.