跪求一篇有关机械类的英文文献,最好不要太长,要中英文对照 10
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2015-10-30
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You will learn about the effect of mold cooling, position of cooling channel, and cooling method for each part.
The temperature of a mold has a great impact on molding.
For example, if the temperature of the mold is too low, molten plastic will not flow smoothly through the runner or the gate, thus may not fill up in the cavity.
On the other hand, if the temperature is too high, it will take too long to cool down and solidify the molten plastic, so the molding cycle will be longer.
Therefore, by controlling the temperature of the mold, the following effects can be expected.
Molding cycle can be shortened by reducing time for cooling and solidification of molten plastic.
The surface quality or measurement accuracy of parts can be improved by better mold ability.
Warp or stress in a part can be avoided that is caused when mold shrinkage varies due to different thickness, leading internal stress difference.
Effective mold cooling is done by pouring cold water into the mold through a cooling channel.
The temperature of a mold has a great impact on molding.
For example, if the temperature of the mold is too low, molten plastic will not flow smoothly through the runner or the gate, thus may not fill up in the cavity.
On the other hand, if the temperature is too high, it will take too long to cool down and solidify the molten plastic, so the molding cycle will be longer.
Therefore, by controlling the temperature of the mold, the following effects can be expected.
Molding cycle can be shortened by reducing time for cooling and solidification of molten plastic.
The surface quality or measurement accuracy of parts can be improved by better mold ability.
Warp or stress in a part can be avoided that is caused when mold shrinkage varies due to different thickness, leading internal stress difference.
Effective mold cooling is done by pouring cold water into the mold through a cooling channel.
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