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The Two Advantages of lost wax casting (investment casting) PowerPoint PPT Presentation


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Compared to the traditional casting process, the lost wax casting can obtainrelatively accurate shape. The investment casting process is to make fusiblepattern, coat several refractory layer, to get a shell after drying and hardeningprocess, then to use steam or hot water melt the pattern from shell, to put the shellin sand box for modeling purpose, the last step is to bake model in hightemperature, then pour melt metal to get casting parts.

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The Two Advantages of lost wax casting (investment casting)

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The two advantages of lost wax casting investment casting

The

The Two

Two Advantages

Advantages of

of lost

lost wax

wax casting

casting (investment

(investment casting

casting) )

Compared to the traditional casting process, the lost wax casting can obtain

relatively accurate shape. The investment casting process is to make fusible

pattern, coat several refractory layer, to get a shell after drying and hardening

process, then to use steam or hot water melt the pattern from shell, to put the shell

in sand box for modeling purpose, the last step is to bake model in high

temperature, then pour melt metal to get casting parts.

Nowadays, lots of mechanical parts are made by lost wax casting (investment

casting) process cause by two advantages:

1, investment casting (investment casting) process is suitable for complex shape,

especially for alloy material casting parts who work in high temperature. For

example, the jet-propeller engine impeller, which has streamline outer contour

and cavity for cooling. It can be made by precision casting (investment casting)

process for batch production, to ensure consistency, the most important is it

wouldn't left concentrated press after machining, so it couldn't be made by

machining process.

2, investment casting (investment casting) have good surface finish and accuracy

dimension, which can reduce machining workload, only need to machine local

surface where require highly accuracy. Even some parts only need grind and shot

blasting, total no need further machining.

We can get a conclusion according to above points, lost wax casting (investment

casting) process can save tool facilities, machining work hours, and raw material.


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