產(chǎn)品詳情
不銹鋼厚壁管的石油精煉裝置中不銹鋼使用大致存在以下問題應(yīng)力腐蝕破裂,穿晶破裂(以氯化物為主),晶間應(yīng)力腐蝕破裂(以硫化物為主)。點(diǎn)蝕,晶間腐蝕,環(huán)烷酸嘴蝕,滲碳脆化。根據(jù)石油精煉裝置不同腐蝕情況選用不銹鋼厚壁管的材料也不同。如高溫硫化物系統(tǒng)考慮Al和Cr的抗硫腐蝕及高溫強(qiáng)度,使用Cr5-Mo以上的材料;高溫H2S-H2系統(tǒng)使用13Cr-Al,18-8Ni鋼;環(huán)烷酸系統(tǒng),低流速情況下選用Cr17Ni14Mo2即可,高流速情況需進(jìn)一步研究;低溫CO2腐蝕系統(tǒng),一般在2℃左右可使用Cr18Ni1;制H2裝置中改質(zhì)爐反應(yīng)管、高溫鋼管以及各種加熱爐鈴的吊架、支架可選用25Cr-2Ni,Incone合金8等。
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LIKA編碼器MSF-16-5-5 GIUNTO 5-5
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06862658 LVP 30D-32S5-LMD/QB-N-RP0-E-U10
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對套圈斷裂現(xiàn)象的研究,不僅要從材料和消耗過程中發(fā)生的缺點(diǎn)這些角度去思考,還要對軸承零件的結(jié)構(gòu)尺寸、加工測量手段、加工工藝、軸承服役條件等要素停滯研究分析。FAG軸承結(jié)構(gòu)和服役條件。不同的結(jié)構(gòu)適宜不同的服役條件;軸承零件結(jié)構(gòu)不同其加工工藝就不盡相反,也就影響到其質(zhì)量。因此咱們應(yīng)開發(fā)新結(jié)構(gòu)產(chǎn)品,以順應(yīng)不同的服役條件,并可在軸承應(yīng)用說明上注明其適宜的服役條件或功用,以不便客戶的抉擇。加強(qiáng)工藝研究,改良加工工藝,提高加工質(zhì)量,增添軸承加工中發(fā)生缺點(diǎn)的可以性。
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67050852 PLP20.14-04S5-LGE/GD/20.11,2-LGD/GD D/FS
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受結(jié)構(gòu)條件的限制該結(jié)構(gòu)不適應(yīng)做通徑DN2以下閥門,原因是閥板整體結(jié)構(gòu)太厚,流阻大。因襯膠蝶閥的原理,閥板的密封面與閥座之間的密封是靠傳動(dòng)裝置的力矩使閥板壓向閥座。正流狀態(tài)時(shí),介質(zhì)壓力越高密封擠壓越緊。當(dāng)流道介質(zhì)逆流時(shí)隨著介質(zhì)壓力的增大閥板與閥座之間的單位正壓力小于介質(zhì)壓強(qiáng)時(shí),密封開始泄漏。高性能通風(fēng)蝶閥其特征在于:所述閥座密封圈由軟性T形密封環(huán)兩側(cè)多層不銹鋼片組成。閥板與閥座的密封面為斜圓錐結(jié)構(gòu),在閥板斜圓錐表面堆焊耐溫、耐蝕合金材料;固定在調(diào)節(jié)環(huán)壓板之間的彈簧與壓板上調(diào)節(jié)螺栓裝配一起的結(jié)構(gòu)。