成型特性
1.结晶料,吸湿性小,易发生融体破裂,长期与热金属接触易分解.
2.流动性好,但收缩范围及收缩值大,易发生缩孔.凹痕,变形.
3.冷却速度快,浇注系统及冷却系统应缓慢散热,并注意控制成型温度.料温低温高压时容易取向,模具温度低于50度时,塑件不光滑,易产生熔接不良,流痕,90度以上易发生翘曲变形
4.塑料壁厚须均匀,避免缺胶,尖角,以防应力集中.
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详细说明：How thrilling it would all be, and how little anyone would dream or guess that it was I who alone could disclose who had done it.
Despite a slight headache I dressed myself in a happy and light-hearted mood, and went in to breakfast.
I was rather puzzled to know what to do with the bar of iron, but ultimately, after assuring myself it was quite clean, I returned it boldly, in Mrs. Bratt’s temporary absence from the kitchen, to its old place, under the newspapers, on the pantry shelf.Then I got into bed and passed a rather restless night of troubled slumber. I seemed to be dreaming and dreaming all night long.
