螺桿泵的填料
Screw fill
建議使用膨脹石墨,膨脹石墨是天然石墨經(jīng)強氧化混合酸處理后成為氧化石墨。氧化石墨受熱分解放出二氧化碳,體積急劇膨脹,形成了疏松柔軟又有韌性石墨。膨脹石墨做成板材后壓模成密封填料,他具有多孔,疏松,耐熱,化學性質(zhì)穩(wěn)定,自潤滑和不滲透性好,壓縮強度為70-115mpa,回彈率35%-50%
Recommend the use of expanded graphite, natural graphite, expandable graphite is mixed by the strong oxidizing acid treatment became graphite oxide. Thermal decomposition of graphite oxide release carbon dioxide, the rapid expansion of the volume, forming a loose soft graphite have toughness. After the die made of expanded graphite sheet into a sealed filler, he has a porous, loose, heat-resistant, chemically stable, self-lubricating and non-permeability, compressive strength for the 70-115mpa, rebound rate of 35% -50%
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