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注塑成品的工藝壓力若何節制?

宣布時候:2020-01-13 17:13:33 禮拜一
擇要:

ZAISULIAOCHENGPINDEDAZHENCHUCHANDANGZHONG,YOUZHILIAODESUHUAYALIHERONGTIDEDAZHENYALI。FANGSHEYALIHUANBAOHANBAOYAYALI。 YI。SUHUAYALI SUHUAYALISHI […]

ZAISULIAOCHENGPINDEDAZHENCHUCHANDANGZHONG,YOUZHILIAODESUHUAYALIHERONGTIDEDAZHENYALI。FANGSHEYALIHUANBAOHANBAOYAYALI。

一。塑化壓力
塑化壓力是指螺桿扭轉,將塑化液推到螺桿頭部,螺桿頭部熔體同時對螺桿頭部發生反壓。當反壓力大于螺桿與筒體內壁間的磨擦力和筒體活塞反向的回油阻力之和時,螺桿起頭反向,使螺桿反向的反壓力便是螺桿對原資料的扭轉靜態塑化壓力,亦稱作為螺釘背壓。經由進程調理油缸回油壓力,能夠取得差別的螺桿塑化壓力。

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2。打針壓力
打針壓力是指螺桿頭對塑化熔體施加的壓力。在打針進程當中,螺桿頭部對熔融資料的壓力使熔融資料降服筒體以內活動到模腔的磨擦阻力,以必然的速率進入模腔,使熔融資料取得壓實。打針壓力的挑選取決于注塑機的范例和規格、產物的外形、模具的布局、原資料的機能和相干的工藝參數。

 

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