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焊接垫片的种类和各自的优势

  • 新闻
  • 焊接垫片的种类和各自的优势
  • October 29, 2025 by
    Administrator

    根据不同的材料和结构,焊接垫片可分为多个种类,目前市场中的垫片主要有金属垫片、非金属垫片、金属复合型垫片。

    金属垫片:

    有金属平垫、波形垫、环形垫、齿形垫、透镜垫、三角垫、双锥环、C形环、中空O形环等。金属垫片的优点是强度大、不易碎、牢固结实,但回弹力有限,需要求法兰表面平坦及紧固力很高才能达到良好效果,适用于直径较大的压力容器(如换热器、反应器、铸铁法兰、汽缸头、锅炉等)法兰的密封。

    非金属垫片:

    材料有橡胶板、石棉橡胶板、柔性石墨板材及带材、聚四氟乙烯等。

    橡胶板用于密封的橡胶品种较多,一般有天然橡胶、丁腈橡胶、氯丁橡胶、异丁橡胶、丁苯橡胶、乙丙橡胶、硅橡胶、氟橡胶;

    石棉橡胶板是由石棉、橡胶和填料经压制而成的,根据其配方、工艺、性能及用途不同,主要有高压石棉橡胶板、中、低压石棉橡胶板和耐油石棉橡胶板;

    柔性石墨是一种新颖的密封材料,具有良好的回弹性、柔软性、耐介质性、耐温性,在化工企业中迅速得到推广应用;

    聚四氟乙烯具有优良的耐腐蚀性能,使用效果良好,制作也比较方便,颇受欢迎,尤其适用于不允许物料有污染的医药、食品等行业尤。但是聚四氟乙烯材料受压后易冷流,受热后易蠕变,影响密封性能,这一点需要注意。

    总的来说,非金属垫片,质地柔软、耐腐蚀、价格便宜,但耐温和耐压性能差,多用于常温和中温的中、低压容器或管道的法兰密封中。

    金属复合垫片:

    金属包垫以非金属材料为芯材,外包厚度为0.25~0.5mm的金属薄板,按包覆状态,可分为全包覆、半包覆、波形包覆、双层包覆等;

    金属带缠绕式垫片由薄的金属波形带与石棉或柔性石墨等非金属带交替绕成螺旋状,将金属带的始末端点焊制成。缠绕垫有四种类型,包括基本型、带内环的、带外环的以及同时带内外环的。

    克林格在密封领域有丰富的研究制造经验,密封产品一应俱全,包括焊接垫片、阀门等,能够满足各种工况的密封需求。

    相关推荐:想了解更多产品信息请点击

    密封垫片有哪些分类?石墨层压垫片是什么材质?

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