三上悠亚674未删减版线观看_偷偷鲁视频_国内精品久久久久影院老司_天天插综合网 - 欧美猛交xxx呻吟

  • 中文 | English
  • Analysis of cemented carbide drawing die maintenance skills

    Make use of cemented carbide drawing dies and maintenance work, the following is some matters needing attention in using alloy wire drawing die:
    1: equipment selection according to the material and drawing equipment you need to pull the compression rate, reasonable ratio of the drawing die, so as to determine the drawing die working angle (is the choice of what type of wire drawing die).
    Pretreatment of 2 drawing materials: such as cleaning, derusting, annealing, phosphating etc., ensure material cleaning.
    3 wire drawing powder, oil selection: selection of quality suitable for wire drawing powder (lubricants, oil cooling), do a good job of drawing die.
    From carbide blank again to all kinds of precision mould manufacture, we implement vertical integration industry. In powder metallurgy die, tungsten steel rod, plate, sealing ring, hard alloy plate, cutting blade, alloy parts, cold forging die, drawing die, there are unique advantages of tungsten steel strip and all kinds of finished products such as the production of special-shaped mold. "Stable quality, strong production capacity and to provide customers with the most competitive price" is the core idea we always insist on.

    | Updated:2014.05.04    Source:    Clicks:3367