Aluminum die cast cylinder heads for motorcycle and automotive parts
The flourish of aluminum die casting industry in Ningbo Area mainly attributed to mass production of aluminum die cast motorcycle parts from 1990's. And the main and most competitive die cast motorcycle parts are the die cast cylinder series. As China die casting association surveys, about 98 percent of die casting molds for motorcycle cylinder parts were made in Ningbo with 78 percent of die cast aluminum motorcycle cylinders made here.
After the good time of die cast motorcycle parts, in the 2000's automotive industry has been booming in China. The following light weight trend of automobile promoted the die cast auto parts industry in Ningbo Area. Among those die cast automotive parts,the die cast auto cylinders are popular for light weight cars. Leading aluminum die casting foundries are converting to be automotive exclusive manufacturer specializing in die cast auto cylinder series. However, the high demanding automotive parts require the aluminum die casting foundry should pass through TS16949 as entrance qualification for automotive manufacturer, no matter a large investment for special equipments like spectrometer,CMM, and X-ray etc.
Parison die casting foundry just passed through ISO/TS19649 authentication, but we still don't have the capability to cast auto cylinder blocks. The auto cylinder blocks die casting require X-ray inspection for each part, as can be not available in Parison, besides we largest die casting machine is still not enough for large auto cylinder block. However we are much suitable for motorcycle cylinder series,and auto cylinder head and cylinder lines.
Aluminum die cast cylinder series
Aluminum die cast cylinder series main include aluminum die cast cylinder block, cylinder head and cylinder liner. Among those cylinder parts, the die cast cylinder block is the most demanding one, which is always asked for vacuum impregnation after casting and x-ray inspection for inner porosity and casting defects like crack. Any crack and extra porosity will lead to serious accident in function.
Aluminum die cast cylinder heads also have strict quality requirement such as pressure testing. The die cast cylinder head can have considerable heat sinks, which can be a high requirement for die casting process. However, the die casting of auto cylinder heads is quite mature now, the critical technical points are clear to die casting foundries.
Iron cast cylinders VS Aluminum die cast cylinders
Early cylinder parts no matter cast cylinder block, cylinder head or cylinder line were cast by ductile iron by sand casting process. Even now, most cylinder blocks for heavy trucks are cast by resin sand casting with ductile iron. The iron cast cylinder has much compacter crystal structure than aluminum die cast parts. Furthermore, because of sand casting applies gravity as casting force with better air release sand mold, sand cast cylinders have less inner porosity trouble than die cast cylinder parts. Iron has larger density than aluminum alloy, so that the sand cast iron cylinder stands larger pressure load than aluminum die cast cylinder.
Aluminum die cast cylinders seem inferior to iron sand cast cylinders, however it has unique advantage that it is much lighter than the sand cast one. Besides, with technology innovation, some die casting disadvantage of aluminum cylinder has been solved. For example, the inner porosity can be cured by vacuum impregnation. And the inner structure can also be reinforced by particular vacuum die casting process.
FAQ's of aluminum die cast cylinder
- what is aluminum die cast cylinders?
- What is application of die cast cylinders?
- How many casting processes can be available for cylinder parts?
- What is vacuum die casting for aluminum die cast cylinder?
- what is the utility of vacuum impregnation for die cast cylinder?
- what kinds of post treatments can be available for aluminum die cast cylinders?
- what is the difference between aluminum die cast and iron sand cast cylinders?
