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فولاد نورد گرم

  • July 21, 2020 12:36 AM PDT

    فولاد نورد گرم
    ورق گالوانیزه هفت الماس
    شاید بهتر باشد ابتدا بگوییم اصلا ورق سیاه چیست ؟ ورق سیاه در اصل همان فولاد نورد گرم است که آن را در دمای بالا (بیش از ℃۱۷۰۰) نورد می‌کنند. زیرا این دمای بالا سبب می‌شود فرآیندهای شکل دهی به فولاد راحت‌ تر انجام گیرد درنتیجه می توان فولاد را
    به اشکال مورد نظر ایجاد کرد. بنابراین در نورد گرم محصول خروجی ورق سیاه نامیده می شود.

    برای اندازه گیری کیفیت ورق سیاه از شاخصی به نام ST استفاده می شود و هرچه عدد کنار ST بیشتر باشد نشان دهنده کیفیت بیشتر ورق سیاه است به طور مثال ورق ST37 از کیفیت کمتری نسبت به ورق ST52 برخوردار است.

     

    مشخصات ورق سیاه :
    ناصافی سطح فلز و پوسته پوسته شدن آن ( بدلیل پروسه سرد شدن پس از حرارت دیدن)
    گردی و ناصافی لبه‌های محصول تولید شده
    قیمت ورق گالوانیزه تاراز
    معمولا فولاد نورد گرم بیشتر از فولاد نورد سرد نیاز به پردازش دارد، به همین دلیل قیمت ورق سیاه کمتر از قیمت فولاد نورد سرد (ورق روغنی) است.
    روش نورد گرم موقعی برای تولید محصولات فولادی بکار می‌رود که استحکام فولاد از ابعاد دقیق و پرداخت‌کاری سطح اهمیت بیشتری داشته باشد. و در صورت لزوم برای پرداخت کردن و پوسته زدایی سطح فولاد نیز می توان از روش‌هایی همچون سمباده زنی،
    سندبلاست و اسید شویی استفاده کرد. پس از زدودن این پوسته‌ها، امکان پرداخت کاری، پولیش کاری و جلا کاری وجود خواهد داشت.

    بخش عمده ای از ورق سیاه نیز در ایران تولید می شود. کارخانه هایی نظیر کارخانه‌های فولاد مبارکه اصفهان ، فولاد اکسین ، فولاد کاویان و غیره . شما می توانید لیست قیمت ورق سیاه انواع کارخانه ها را در سایت فولاد مارکت مراجعه کنید.

     

    ورق گالوانیزه
    قیمت ورق کاویان
    ورق گالوانیزه ورق اهنی است که برای پوشش آن از فلز روی استفاده میشود و بسیار پرمصرف است. یکی از ویژگی های این ورق این است که در ورق گالوانیزه حتی اگر پوشش رویین ورق دچار شکستگی شود همچنان خاصیت ضد زنگ زدگی خود را حفظ میکند. از
    دیگر خصوصیات ورق گالوانیزه طول عمر بالا و دوام بسیار زیاد آن می باشد. به همین دلیل است که قیمت ورق گالوانیزه کمی بیشتر از سایر ورق های آهن است.

     

    تولید ورق گالوانیزه

    ورق گالوانیزه به دو صورت کلی رول فرم و فابریک در کارخانه تولید می شود.

    ورق های رول فرم گالوانیزه با ضخامت های ۱۸ صدم میلی متر تا ۶ میلی متر و با دو عرض ۱۰۰ سانتی متر و ۱۲۵ سانتی متر تولید می شوند.
    قیمت ورق کرکره کرمان
    ورق های فابریک گالوانیزه هم به دو صورت فابریک ۲۰۰۰×۱۰۰۰ میلی متر و فابریک ۲۵۰۰×۱۲۵۰ میلی متر تولید می شوند .

    وزن عمومی رول ها بسته به عرض رول یا ضخامت و بسته به کارخانه تولید کننده متفاوت است و قیمت ورق گالوانیزه نیز به کارخانه تولید کننده بستگی دارد. قطعا قیمت ورق گالوانیزه باتوجه به ضخامت آن تغییر می کند.

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    July 26, 2020 9:19 PM PDT

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