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不銹鋼彎頭的加工方法

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2020-08-26 17:35

不銹鋼彎頭比推制彎頭多了兩道工序：一是探傷，一是熱處理，其他程序與彎頭的制作過(guò)程--推制彎頭相同，請參照沖壓彎頭生產(chǎn)過(guò)程。

不銹鋼彎頭的加工方法也有很多種。很多還屬于機械加工類(lèi)的范疇，用的最多的是沖壓法、鍛壓法、滾輪加工法、滾軋法、鼓脹法、拉伸法、彎曲法、和組合加工法。不銹鋼彎頭加工是機加工和金屬壓力加工的有機結合。

1.鍛壓法：用型鍛機將管子端部或一部門(mén)予以沖伸，使外徑減少，常用型鍛機有旋轉式、連桿式、滾輪式。

2.滾軋法：一般不用芯軸，適合于厚壁管內側圓緣。在管內放置芯子，外周用滾輪推壓，用于圓緣加工。

3.沖壓法：在沖床上用帶錐度的芯子將管端擴到要求的尺寸和外形。

4.彎曲成形法：有三種方法較為常用，一種方法叫舒展法，另一種方法叫沖壓法，第三種滾輪法，有3－4個(gè)輥，兩個(gè)固定輥，一個(gè)調整輥，調整固定輥距，成品管件就是彎曲的。

5.鼓脹法：一種是在管內放置橡膠，上方用沖子壓縮，使管子凸出成形；另一種方法是液壓鼓脹成形，在管子中部充入液體，液體壓力把管子鼓成所需要的外形，波紋管的出產(chǎn)大部門(mén)用的是這種方法。沖壓彎頭不會(huì )產(chǎn)生侵蝕、點(diǎn)蝕、銹蝕或磨損，不銹鋼仍是建筑用金屬材料中強度最高的材料之一，因為不銹鋼具有良好的耐侵蝕性，所以它能使結構部件永久地保持工程設計的完整性。

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