又粗又长又硬爽死我了动态图

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四種PP管在生產中常用的彎曲加工工藝方法

PP管在生產中常用的彎曲加工工藝方法有以下4

壓彎彎曲加工工藝法 :壓彎是更早用于管柄彎曲加工的工藝方法,它是在液壓機上利用模具或胎具對管坯進行彎曲加。壓彎方法既可彎制帶直段的管件,又可彎制彎頭,目前,壓彎上要用于壓制彎頭,它在彎頭生產中已獲得廠泛應用。

 

推彎彎曲加工工藝法 :推彎是在一般壓力機、液堆機或專用推制機上進行彎曲加工,PP主要用于彎制彎頭。根據推彎工藝特點,又可分為型模式冷推彎管和芯捧式熱推彎管兩種。型模式冷推彎管是在常溫下將管坯壓入帶有彎曲空腔的型模中,從而形成管彎頭。芯棒式熱推彎管是在推力和牛角芯棒阻力的作用下,邊加熱邊推制,使管壞產生周向擴張和軸向彎曲變形,從而將轉小直徑的管坯準制成較大直徑的彎頭。

 

繞彎彎曲加工工藝法 :繞彎是在立式或臥式彎管機上進行彎曲加工。根據其工藝特點,又可分為有芯彎管,無芯彎管和頂壓彎臂三種。PP管材的冷作彎曲加工,大都是采用繞彎方式。另外,在生產中也常利用簡單彎管裝置進行手工彎管,它也屬于繞彎方式。由于這類彎管裝置制造成本低,調節使用頁方便,故適用于沒有專用彎管設備的小批量生產中。

 

滾彎彎曲加工工藝法 :滾彎是用三哥驅動功輥輪時管削進行彎曲加工,其滾彎方法及滾彎機工作原理與板材滾彎基本相同。區別僅在于PP管管材滾彎所用的輥輪具有與彎曲管坯斷面形狀相吻合的工作表面,通過改變輥輪的間隔,就可作任意曲率半徑的彎曲。滾彎方發對彎曲半徑有相應限制。僅適用于曲率半徑要求大的厚壁PP管管件,尤其對彎制環形或螺旋線形彎管件特別方便。

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又粗又长又硬爽死我了动态图
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