Comparison of 6 advantages and disadvantages of magnesium and aluminum
1. melting costs as long as 2 / 3 of aluminum.
2. The output power of die casting is 25% higher than that of aluminum, 300-500K higher than that of metal casting and 200% higher than that of aluminum by EPC.
3. The appearance quality and appearance of magnesium castings are significantly better than that of aluminum castings (the viewing frequency can be decreased due to the reduction of thermal load on the die).
4. die life is 2 times that of aluminum (or more, depending on the shape of the die cavity).
5. The diagonal angle of magnesium debarking can be very small (the subsequent machining can be cancelled), and the appearance is well formed (due to the low viscosity of magnesium).
1. Compared with aluminum die casting, magnesium die casting produces higher residual reject rate (and aluminum die casting reject rate).
2. the investment equipment for magnesium die casting investment is very high. Compared with aluminum gravity / low pressure / nitrate mold process, magnesium die casting machine is very expensive (due to the higher clamping force and filling rate), of course, its yield is four times the former.
3. Magnesium die casting requires a higher cost and a longer trial-production time, while steel parts (simple welding skills for drawing) or plastic parts (low-cost prototype tooling is optional) are much simpler.
4. and aluminum low pressure or metal mold casting ratio, magnesium die casting needs higher mold cost. Due to the large and messy die-casting mold, but also to withstand high locking force (of course, high yield can also reduce the cost of a single product).
5. The burning loss rate of magnesium die casting is 50 K higher than that of aluminum die casting, that is, 4% higher than 2% (due to the higher surface activity of magnesium).
6. Magnesium die-casting chip recovery cost. higher than aluminum, dry magnesium chip is not easy to recover, wet is not easy, it is necessary to be very careful to avoid fire.
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