国产欧美日韩另类精彩视频,婷婷色国产精品视频一区,亚洲精品视频熟妇人妻,日本免费人成视频播放,亚洲 另类 日韩 制服 无码,久久精品亚洲乱码伦伦中文,日韩AV片无码一区二区不卡电影,亚洲熟女av一区激情,男女性高爱潮免费网站,亚洲精品毛片免费观看

  • <del id="ceak0"></del>
    
    
    <strike id="ceak0"><menu id="ceak0"></menu></strike>
    <strike id="ceak0"><menu id="ceak0"></menu></strike>
  • <fieldset id="ceak0"><table id="ceak0"></table></fieldset>
  • <strike id="ceak0"></strike>
  • <fieldset id="ceak0"><menu id="ceak0"></menu></fieldset>
    <fieldset id="ceak0"></fieldset>
  • <del id="ceak0"></del>
    <ul id="ceak0"></ul>
  • 歡迎訪問Taizhou Huayuan Metallurgical Machinery Co., Ltd.網(wǎng)站!
    中文 中文 |  英語 English

    Roller hearth heat treatment furnace furnace roller furnace bottom roller nodule related problems

    時(shí)間:2020-06-13   訪問量:1664

    1. The non-oxidation (nitrogen protection) roller hearth heat treatment furnace (normalized furnace) heated by radiant tube is used for a period of time. The furnace roller and furnace bottom roller are nodular. The direct hazard of nodulation is to cause pits in the thicker steel plate. And affect the surface quality, as shown in the following figure, please talk about the effective measures to prevent the furnace bottom roll nodule and the treatment after nodulation.


    2. Casting has pores, trachoma and other congenital deficiencies in the density of the drawing. The drawing is made of hot-rolled bar material, and through multiple processes such as perforation and tube drawing, the uniformity and density of the ingredients are better than the casting. The price is much higher than the price. Without considering the brand, the stove and the stove are very different from the price. All said the same material. The service life is much better.


    3. In the general protective atmosphere, roller hearth furnace will have nodule phenomenon on the roller hearth roller surface, which is difficult to solve. I ask SAC President Mr. Han Hengji and Mr. LOI Su, they think that the thick plate is on the roller bottom Nodules in the furnace are mainly caused by surface impurities such as oxide scales in contact with the roller table at high temperatures, and once nodules will scratch the workpiece and exacerbate nodules. The only solution is to add a shot blasting unit in front of the furnace, to remove oxide scales, and to wash away impurities such as steel shots. Even if the shot blasting unit is added, there is no guarantee that no lumps will be formed at all. Regular inspections are required!


    4. However, foreign experts say that the outer surface of the roller using centrifugal casting is not processed better, it can maintain a dense structure, but the adsorption force of iron oxide scale or other impurities is weak at high temperature, but the inner surface has been machined with an accuracy of 12.5 , Can effectively ensure the uniformity of the wall thickness of the roller.

    912492605.jpg

    上一篇:Knowledge of coating operation process in centrifugal castings

    下一篇:沒有了!

    相關(guān)新聞

    為您提供耐腐耐磨砂漿泵,工程塑料泵,蒸發(fā)循環(huán)泵等方面的專屬解決方案

    網(wǎng)站導(dǎo)航

    聯(lián)系我們

    聯(lián)系人:Manager Zhang

    手機(jī):(86)15195227247

    電話:(86)0523-88551112

    郵箱:464292064@qq.com

    地址:Industrial concentration area (Weijia Village), Zhangdian Town, Jiangyan District, Taizhou City

    Copyright ? 2020-2021 Taizhou Huayuan Metallurgical Machinery Co., Ltd. All Rights Reserved 備案號(hào)碼:蘇ICP備20031998-1號(hào)

    服務(wù)咨詢熱線

    (86)15195227247

    提供完善的冶金機(jī)械解決方案

    微信掃一掃

    微信聯(lián)系
    返回頂部
    欧美另类精品XXXX人妖| 免费无码又爽又刺激高潮虎虎视频| 99re在线免费视频| 亚洲男人的天堂久久香蕉网| 人妻人人澡人人添人人爽| 秋霞一区二区三区| 亚洲妇人精品偷拍视频| 国内精品免费| 欧美有码在线| 亚洲中文字幕无码爆乳APP| 蜜臀久久综合一本av| 亚洲国产国语对白在线字幕| 久久精品国产三级久久| 久久久久久高潮白浆| 一级黄色欧美| 成人精品蜜臀在线观看| 91青青草视频在线观看的| 国产三级在线日本国产| 亚洲不卡av不卡一区二区| 精品少妇人妻一区二区| 国产精品大尺度尺度视频| 国产精品伦一区二区三级视频| 久久亚洲精品成人av| 久久亚洲男人第一AV网站| 欧美性天天| 国产成人麻豆精品| 宅男666在线永久免费观看| 国产线播放免费人成视频播放| 久久天天躁狠狠躁夜夜2020老熟妇| 欧美熟妇丰满XXXXX裸体艺术| 国产亚洲成AⅤ人片在线观看| 美女人妻动态免费视频| 国产另类视频一区二区| 亚洲男人天堂网址| 日韩狼人精品在线观看| 五月激激激综合网色播免费| 少妇极品熟妇人妻高清| 亚洲东京热无码av专区| 国产精品美女一区二区| 亚洲人妻中文字幕乱码在线| 精品日韩人妻中文字幕|