常用的垫片有非金属垫片、半金属垫片和金属垫片。非金属垫片也称软垫片,如石棉橡胶板、橡胶、聚四氟乙烯等,软垫片用于温度、压力都不高的场合。半金属垫片由金属材料和非金属材料组合而成,如柔性石墨复合垫、缠绕式垫片、金属包覆垫等。半金属垫片比非金属垫片承受的温度、压力范围较广。金属垫片全部由金属制作,有波形、齿形、椭圆形、八角形、透镜垫、锥面垫等。金属垫片用于高温高压场合。
normal style="MARGIN: 7.8pt 0cm; TEXT-INDENT: 18.05pt; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-char-indent-count: 2.0">1 非金属垫片使用条件
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">非金属垫片使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>名 称 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>代 号 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>压力等级MPa | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>适用温度℃ |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>天然橡胶 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>NR | 2.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-50~90 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>氯丁橡胶 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>CR | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-40~100 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>丁腈橡胶 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>NBR | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-30~110 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>丁苯橡胶 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>SBR | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-30~100 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>乙丙橡胶 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>EPDM | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-40~130 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>氟橡胶 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>Viton | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-50~200 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>石棉橡胶板 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>XB350 normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>XB450 normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>NY400 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center> 2.0 ≤300 normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>P·t≤650 MPa·℃ | |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>耐油石棉橡胶板 | |||
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>改性或填充聚四氟乙烯 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>5.0 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>-196~260 |
normal style="MARGIN: 7.8pt 0cm; TEXT-INDENT: 18.05pt; LINE-HEIGHT: 150%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-char-indent-count: 2.0">2 半金属垫片使用条件
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(1)柔性石墨复合垫使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>芯板及包边材料 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>压力等级MPa(磅级) | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>适用温度℃ |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>低碳钢 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0~11.0(150~600) | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>450 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>0Cr18Ni9 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>2.0~11.0(150~600) | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>650* |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; mso-char-indent-count: 2.0">注:*用于氧化性介质时≤450℃ |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 22pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">(2)金属包覆垫使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>包覆金属材料* | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>HB | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>填充材料 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>压力等级MPa(磅级) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>适用温度℃ |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>纯铝板L3 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>40 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>石棉橡胶板 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>2.0~15.0(150~900) | 200 |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>纯铜板T3 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>60 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>300 | ||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>镀锡薄钢板 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>90 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>400 | ||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>镀锌薄钢板08F | ||||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr18Ni9 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>187 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>500 | ||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>00Cr19Ni10 | ||||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>00Cr17Ni14Mo2 |
normal style="MARGIN: 7.8pt 0cm; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-char-indent-count: 2.0">注:* 也可采用其他材料。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(3)缠绕式垫片使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>金属带材料① | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>非金属带材料 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>压力等级MPa(磅级) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>适用温度℃ |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr18Ni9 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>柔性石墨 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>2.0~26(150~1500) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>650② |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr17Ni12Mo2 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>柔性石墨 | ||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>00Cr17Ni14Mo2 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>聚四氟乙烯 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>200 |
normal style="MARGIN: 7.8pt 0cm 0pt; TEXT-INDENT: 18pt; mso-para-margin-top: .5gd; mso-char-indent-count: 2.0">注:① 也可采用其他金属带材
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 36pt; mso-char-indent-count: 4.0">② 用于氧化性介质时≤
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(4)齿形组合垫使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>齿形环材料① | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>覆盖层材料① | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>压力等级MPa(磅级) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>适用温度℃ | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>剖 面 | |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>10或08 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>柔性石墨 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>2.0~42(150~2500) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center> normal style="MARGIN: 0cm 0cm 0pt"> | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%; TEXT-ALIGN: center" align=center> | |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr13 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>540② | ||||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr18Ni9 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>650② | ||||
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr17Ni12Mo2 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>聚四氟乙烯 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>200 |
normal style="MARGIN: 7.8pt 0cm 0pt; TEXT-INDENT: 18pt; mso-para-margin-top: .5gd; mso-char-indent-count: 2.0">注:① 也可采用其他材料 ② 用于氧化性介质≤450℃
normal style="MARGIN: 7.8pt 0cm; TEXT-INDENT: 18.05pt; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-char-indent-count: 2.0">3 金属垫片使用条件
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">金属垫片使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>材 料① | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>HB max② | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>压力等级MPa(磅级) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>适用温度℃ |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>10或08 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>120 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>2.0~42(150~2500) | 450 |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr13 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>170 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>2.0~15.0(150~900) | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>540 |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr18Ni9 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>160 | normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>600 | |
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center" align=center>0Cr17Ni12Mo2 |
normal style="MARGIN: 7.8pt 0cm 0pt; TEXT-INDENT: 18pt; mso-para-margin-top: .5gd; mso-char-indent-count: 2.0">注:①也可采用其他材料
normal style="MARGIN: 2.5pt 0cm 0pt; TEXT-INDENT: 36pt; mso-char-indent-count: 4.0">②金属环垫材料的硬度值应比法兰材料的硬度值低30~40 HB
normal style="MARGIN: 7.8pt 0cm; TEXT-INDENT: 18.05pt; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-char-indent-count: 2.0">4 其他资料中介绍的金属垫片使用条件
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">其他资料中介绍的金属垫片使用条件见表
normal style="MARGIN: 7.8pt 0cm; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm">表
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>材 料 | HB max | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>适用温度℃ |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>软 铁 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>90 | 450 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>08或10 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>120 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>450 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>0Cr13 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>140 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>540 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>00Cr17Ni14Mo2 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>150 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>450 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>1Cr18Ni9Ti | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>160 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>600 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>0Cr18Ni12Mo2Ti | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>160 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>600 |
normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>0Cr18Ni9 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>160 | normal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>600 |
normal style="MARGIN: 7.8pt 0cm; TEXT-INDENT: 18.05pt; LINE-HEIGHT: 150%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm; mso-char-indent-count: 2.0">5 注意事项
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(1)阀门中法兰垫片的尺寸是没有标准的,垫片的厚度可以参照管道法兰垫片的有关标准,因垫片用的板材、带材都是有一定规格的,不能任意选择厚度。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(2)垫片用聚四氟乙烯材料时在结构上要考虑防止冷流。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(3)采用缠绕式垫片在结构上要防止垫片压散,解决办法是在不利的一侧加环保护或在结构上加以考虑,如垫片加内环,外圆由止口定位等。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">(4)垫片的选用不只是温度、压力,还要考虑介质的腐蚀性。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0" align=left>
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