2638| 3
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教材提到:“鑄型,、型芯阻礙鑄件收縮而產(chǎn)生的應(yīng)力,,稱(chēng)為機(jī)械應(yīng)力阻礙” 型芯阻礙... |
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點(diǎn)評(píng)
嗯,。存在大凹槽的一定會(huì)阻礙收縮,。大凹槽指的是底長(zhǎng)遠(yuǎn)大于壁厚。
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