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PTFE油封材質(zhì)選用 Material Selection for PTFE Oil Seals | ||
編號 No. | 密封件材質(zhì) Material | 應(yīng)用特性 Application Feature |
1 | 純鐵氟龍 Virgin PTFE |
適用于食品,制藥等制程 Suitable for foodstuff and pharmaceutical process. |
2 | 玻纖填料鐵氟龍PTFE filled glass fiber |
改良的耐壓,耐磨性,抗化學(xué)性;較優(yōu)的熱導(dǎo)性 Improved pressure-resistant, wear resistance, excellent chemical resistance and optimum thermal conductivity. |
3 | 青銅填料鐵氟龍PTFE filled bronze |
耐高壓,耐磨耗,熱傳導(dǎo)性佳,特別適用于190℃以上的高溫場合 High pressure resistance, good thermal conductivity, abrasion resistance, especially for applications in high temperature above 190 ℃. |
4 | 石墨填料鐵氟龍PTFE filled graphite |
適用于短期無潤滑或長期潤滑不良的旋轉(zhuǎn)應(yīng)用 Suitable for Short-term without lubrication or long-term bad lubrication rotary applications. |
5 | 碳纖填料鐵氟龍PTFE filled carbon fibre |
之耐磨,耐壓性,良好熱導(dǎo)性,低透氣性 Excellent wear resistance and pressure resistance, good thermal conductivity,low-permeability |
鋼環(huán)及靜止密封墊材質(zhì)選用Steel ring and static gasket material selection | ||
編號 No. | 鋼環(huán)材質(zhì)Material | 應(yīng)用特性 |
1 | 碳鋼Carton steel |
標(biāo)準(zhǔn)材質(zhì),一般環(huán)境下潤滑油或潤滑脂之應(yīng)用 Standard material, suitable for general environment of lubricating oil or grease. |
2 | 304不銹鋼304 stainless steel |
腐蝕環(huán)境下潤滑油或潤滑脂之應(yīng)用 Suitable for lubricating oil or grease under corrosive environment. |
3 | 316不銹鋼316 stainless steel |
腐蝕性流體之密封 Corrosive fluid seal |
編號 No. | 密封墊材質(zhì)Material | 應(yīng)用特性Application Feature |
1 | NBR |
標(biāo)準(zhǔn)材質(zhì),一般環(huán)境下潤滑油或潤滑脂之應(yīng)用,適用溫度-40~100℃ Standard material, suitable for general environment of lubricating oil or grease, applicable temperature - 40 ~ 100 ℃ |
2 | FKM(Viton) |
高溫下潤滑油或潤滑脂之應(yīng)用,適用溫度-20℃~200℃ Suitable for lubricating oil or grease under high temperature, applicable tempreature - 20 ℃ ~ 200 ℃ |
轉(zhuǎn)軸與溝槽的要求Requirements of shaft and groove
為充分發(fā)揮PTFE油封的優(yōu)異性能與耐用性,并避免安裝不當(dāng)導(dǎo)致密封件受損,軸的密封面與密封件溝槽必須有適當(dāng)?shù)募庸?。安裝時,聚四氟乙烯密封唇必須向壓力側(cè)。
軸Shaft | |
■軸表面硬度≧40HRC(潤滑不良或高速運轉(zhuǎn)的場合≧58HRC) | |
Shaft surface hardness≧40HRC | |
(poor lubrication or high speed occasion≧ 58HRC) | |
■表面研磨并拋光以去除銳角,表面粗度Ra=0.2~0.5 um, | |
真空應(yīng)用Ra≦0.2um | |
Grinding and polishing the surface to remove the sharp angle, the surface roughness Ra=0.2~0.5 um,vacuum applications Ra≦0.2um |
|
■軸徑尺寸公差h11 Shaft dimensional tolerances h11 | |
■端面導(dǎo)角15° - 30° Face conduction angle 15° to 30° | |
溝槽Groove | |
■表面粗度Ra≦0.8um Surface roughness Ra≦0.8um | |
■溝槽尺寸公差H8 Groove dimensional tolerances H8 | |
■端面導(dǎo)角5° - 15° Face conduction angle 5° to 15° |
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