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    冷拉鋼用途是什么
    發布日期:2018-07-22       點擊數:318       

    冷拉鋼就是冷拔鋼,主要是表面光滑,有一定的光潔度,可以減少后續加工工序。冷拔鋼是指用冷拔方法而生產出來的各種冷拔鋼材。

    ?

    冷拔鋼的特點是:精度高,表面質量好。冷拔主要用于生產鋼絲,也用于生產直徑在50mm以下的圓鋼和六角鋼,以及直徑在76mm以下的鋼管。

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    用冷軋、冷拔或冷軋和冷拔相結合的冷加工方法生產管材的整套裝備組合。是對熱軋管材或焊接管進行深度加工的機組。

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    依據金屬的加工性能、管材尺寸、質量要求以及投資和效益來選擇不同的加工方法及相應的輔助工序。

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    冷軋冷拔管的基本工序有:

    (1)管料供給,所用管料為熱軋成品管或半成品管、擠壓管以及焊接管;

    (2)管料準備,包括檢查、打捆、酸洗、清洗、沖洗、中和、烘干、涂潤滑劑等;(3)冷加工(冷軋或冷拔);(4)成品精整包括成品熱處理、矯直、取樣、切頭尾、檢查(人工檢查和各種探傷)、水壓試驗、涂油、包裝、入庫等。不同的產品精整內容有所差異。

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    一般是這樣:

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    原料管經酸洗后進入拉管機。

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    如果管徑減縮大要經過幾次拉管操作。

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    如果是合金鋼,拉管后要退火。

    ?

    最后要探傷檢驗。

    ?

    成品表面可以認為沒有氧化鐵皮。


    656彩票

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