四虎国产精品久久久久久网址,亚洲韩国日本va精品国产一区,国产美女免费看啪啪啪,亚洲无人区午夜福利码高清完整版,亚洲一区在线电影观看,亚洲午夜一区二区三区精品影院,放成年人的黄色片一级,夫妻丰满一区二区三区,97精品伊人久久久大香线蕉,亚洲精品aa片在线观看国产

  • <tfoot id="kquwu"><input id="kquwu"></input></tfoot>
  • Hello, welcome to the official website of huaibei yuanli metal products co., LTD.
    服務(wù)手機(jī)TEL:13809005750
    全國(guó)統(tǒng)一服務(wù)熱線

    Service hotline:
    0561-3158099

    HOME-News-Industry dynamic
    Two methods for deep processing of cold-rolled strip steel
    Release time:2018-6-28 18:34:59      Number of clicks:1484
    Cold rolled steel strip is a common steel, not only the cost is low, and the performance is good, of course, in order to be able to play the biggest performance of cold rolled strips, deep processing is little not, how to carry on the deep processing of cold-rolled strip steel? Cold-rolled strip mill gives the following two methods.
    Method 1: acid-free dephosphorization of cold-rolled strip steel.
    Raw materials for pickling of cold rolled strip steel is the biggest pollution produced by production time, many people use shot peening to phosphorus removal, of course, also have electrolysis, effect is the same, basically all is not very good. Now, phosphorus is best is acid free phosphorus removal, and the main steps is to let the cold rolled steel strip in the environment of no oxygen gas burner with grey to blow out, and quickly achieve the corresponding temperature, the process have to be mixed in hydrogen, of course, but also to prevent the cold rolled strip steel cooling to room temperature oxidation phenomenon appeared.
    Method 2: cooling and lubrication of cold-rolled strip steel.
    Will follow strip cold rolling lubrication waste liquid to cold rolling workshop together, this will undoubtedly cause pollution, at the same time, the requirements for fire safety grade is high, it is need to conquer, is also the general cold rolled strip steel factory needs to take corresponding measures to deal with.
    The above are two deep processing methods of cold-rolled strip steel, hoping to bring help for better production and use of cold-rolled strip steel.

    The news that you are interested in
    The last one:What is the difference between cold-rolled strip and hot-rolled strip?
    Next:Different applications of cold-rolled steel belts are also different
    Quality assurance
    The good faith for this
    Professional and
    technical
    Advanced equipment
    Intimate after-sales

    We must pursue perfection, service equipment manufacturing, technology innovation and quality development

    国产三级三级三级av精品| 成在人线无码aⅴ免费视频| 欧美日韩精品一区二区在线播放| 日韩欧美一区二区东京热| 欧美丰满熟妇乱xxxxx视频| 欧美又黄又嫩大片a级| 亚洲va欧美va天堂v国产综合| 色爱综合激情五月激情| 少妇激情av一区二区| 欧美日韩日本一区二区三区| 影音先锋中文字幕人妻| 99热精国产这里只有精品| 国产在线不卡免费精品| 精品视频一区二区国产| 日韩成人色综合加勒比| 99久久久国产精品系列| 欧美日本a v 一区二区| 国产乱码精品一区二区三区中文| 国产又粗又猛又爽又黄的视频在线观看动漫| 97超清视频在线观看| 亚洲视频一区二区三区在线观看| 熟女少妇内射日韩亚洲| 日本久久精品一区二区三区| 亚洲三级三级三级精品| 中文字幕亚洲国产精品| 亚洲天堂黄色在线观看| 久久久精品中文字幕麻豆发布| 精品国产av黄片正品| 中文字幕日本熟女精品| 久久护士精品区日韩| 亚洲av无码国产精品久久不卡| 精品一区二区三区不卡少妇av| 精品码字幕区中文在线| 亚洲精品日韩一区二区在线| 国产四虎美女免费视频| 人妻少妇太爽了嫩草影院| 一本色道久久亚洲综合精品蜜桃| 国产福利久久久久久| 国内精品久久人妻互换| 91精品国产自产高清| 日韩精品电影免费在线|