Isingeniso
Njengoba imikhawulo yokukhishwa kwegesi iqina ekucutshungulweni kwamakhemikhali, ekucwengisisweni nasekukhiqizweni kwamandla, ubuchwepheshe bokuvala sebuyinto ebalulekile ekufinyeleleni ukusebenza okungenawo ukukhishwa kwegesi. Izivalo zensimbi ezigoqekayo ziyathola ukunakwa ngoba zisusa amaphuzu avamile okwehluleka atholakala emiklamo evamile yokusunduza, ikakhulukazi lawo axhumene nama-elastomer ashukumisayo kanye nokunyakaza kweshaft. Lesi sihloko sichaza ukuthi ukwakhiwa kwazo kusekela kanjani ukukhishwa kwegesi okuphansi okugoqekayo, ukuthembeka okuqinile, kanye nokuvalwa okungcono kwesikhathi eside ezinsizeni ezidinga kakhulu. Siphinde sichaze izimo zokusebenza kanye nezingcindezi zokuthobela imithetho ezenza izivalo zensimbi ezigoqekayo zibe yisinqumo esiwusizo lapho izikhawu zokuvimba, ukuphepha, kanye nokugcinwa kubalulekile.
Kungani Izimbozo Zensimbi Zensimbi Ziba Yisinqumo Esikhethwayo
Ukushintshela ezikhungweni zezimboni ezingakhiphi ugesi kushintshe kakhulu imingcele yokucaciswa kwemishini ejikelezayo. Njengoba izinhlaka zomthetho ziqina eduze kokukhishwa komoya okubalekayo, abaqhubi baya ngokuya besuka kubuchwepheshe bendabuko bokuvala obuthembele kuma-elastomer ashukumisayo esibili. Izivalo zensimbi ezishayayo sezivele njengesixazululo esiqondile sokuphathwa koketshezi olunezingqinamba ezinkulu, zisusa ubuthakathaka obungokwemvelo bezindandatho ze-O ezishelelayo.
Ekucubungulweni kwamakhemikhali, ekucwengisisweni nasekukhiqizweni kwamandla,uphawu lomshini lusebenza njengesivikelo esiyinhlokongokumelene nokungcoliswa komoya. Ngokusebenzisa umongo wensimbi ohlanganisiwe onqenqemeni ukuhlinzeka kokubili ukulayisha ubuso kanye nokuvala okwesibili, ukwakheka kwezinsimbi zensimbi ngokwemvelo kudlula i-hysteresis kanye ne-shaft fretting evame ukonakalisa izivalo zokucindezela ngokuhamba kwesikhathi.
Indlela imikhawulo yokukhishwa kwegesi kanye nemigomo yokuthembeka eshintsha ngayo isidingo
Izinhlangano zemvelo emhlabeni wonke zicindezela imikhawulo yokukhishwa kwe-volatile organic compound (VOC) eyamukelekayo. Ngokomlando, amazinga okuvuza angu-10,000 ngesigidi (ppm) ayebekezelelwa ezitshalweni zezimboni ezindala. Imiyalelo yesimanje, eqhutshwa yizinqubo ezifana ne-EPA Method 21 kanye nezindinganiso ze-European TA-Luft, manje ivame ukuvala ukukhishwa kwe-VOC okuvunyelwe ku-500 ppm, ngezinsizakalo ezinobuthi ezibalulekile ezidinga ukulawulwa okuqinile ngaphansi kwe-100 ppm.
Ukuze bahlangabezane nalezi zinhloso eziqinile zokukhipha ukungcola okungadingeki, onjiniyela bokuthembeka badinga izindlela zokuvala ezigcina ubuqotho obuphelele phakathi nesikhathi eside phakathi kokwehluleka (i-MTBF). Ngenxa yokuthi izivalo zensimbi ezingenayo i-elastomer eshelelayo enamandla, azihlushwa yisethi yokucindezela kwe-O-ring noma ukuwohloka kokushisa ngaphansi kokujikeleza okunamandla. Le ndlela yokuvala yesibili engaguquki iqinisekisa ukuthi iphrofayili yokulawula ukukhishwa kokungcola ihlala iqondile futhi ibikezelwa kuyo yonke impilo yokusebenza kwesivalo, isekela ngqo ukuthembeka kwesitshalo sonke kanye nezilinganiso zokuhambisana.
Lapho izivalo zensimbi ezishaya khona ziletha inani elikhulu kakhulu
Izinzuzo zesakhiwo se-metal bellows seals zihumusha zibe yinani eliphezulu lokusebenza ezindaweni lapho izingxenye ze-elastomeric zihluleka khona ngaphambi kwesikhathi. Izicelo zokushisa okuphezulu, njengephampu kawoyela oshisayo ezisebenza kufika ku-400°C (750°F), zimelela indawo eyinhloko yokufakwa, njengoba le mithwalo yokushisa ilimaza ngokushesha ama-O-rings avamile e-FKM noma e-FFKM.
Izinsizakalo ze-cryogenic nazo ziyazuza kakhulu. Emazingeni okushisa awela ku--75°C (-103°F) nangaphansi, ama-elastomer adlula ekushintsheni kwengilazi, abe buthakathaka futhi angakwazi ukugcina uphawu. Ama-bellow ensimbi agcina i-modulus yawo yokuguquguquka kanye ne-flexural dynamics kulezi zinguquko zokushisa ezidlulele. Ngaphezu kwalokho, lapho kukhona izinto eziqinile ezilengayo noma uketshezi oluvame ukwenza i-polymerize kanye ne-coke lapho kuthintana nomoya, ukungabikho kophawu lwesibili olushelelayo kuvimbela "ukulenga" okuvame ukuphoqa ubuso bophawu ukuthi buvuleke, ngaleyo ndlela kugwenywe ukukhishwa komoya okubi kakhulu.
Yini Eyenza Izivalo Zensimbi Zibenyezele Zifanelekele Isevisi Yokukhipha Ukungcola Okungadingeki
Ukwakheka okuyisisekelo kwesivalo sensimbi esithambile sithatha indawo yezingxenye eziningi zesivalo esivamile sokusunduza—ikakhulukazi izipilingi, i-O-ring enamandla, kanye nesiketi esishelelayo—ngenhliziyo eyodwa yensimbi ehlanganisiwe enobunjiniyela obuphezulu. Lokhu kuhlanganiswa okuhlanganisiwe kusebenza ngesikhathi esisodwa njengesici sesipilingi esisebenzisa amandla okuvala okwenziwa ngomshini ebusweni besivalo futhi njengomngcele wesibili ongangeneki ngokumelene noketshezi lwenqubo.
Indlela izivalo zensimbi ezisebenza ngayo kanye nezici ezibalulekile zokuklama
Ingaphakathi lensimbi ye-bellows lakhiwa ngokuhlanganisa uchungechunge lwe-diaphragms zensimbi ezigxivizwe ngokunembile, noma amapheshana, kuma-diameter awo angaphakathi nangaphandle. Lo mklamo ohlanganisiwe onqenqemeni unikeza izinga elithile lentwasahlobo elifanayo eliqinisekisa ukulayishwa kobuso okufanayo kungakhathaliseki ukunyakaza okuncane kwe-axial ye-shaft. Ngenxa yokuthi ukuhlanganiswa kwe-bellows kulinganiswa nge-hydrostatic ngomklamo, ingcindezi yoketshezi lwenqubo isebenza kububanzi obusebenzayo be-bellows convolutions kunokuphoqelela isinyathelo ku-shaft noma esikhwameni.
Izici ezibalulekile zomklamo zihlanganisa nokuguquguquka kokuzihlanza. Njengoba iyunithi ye-bellows ijikeleza, amandla e-centrifugal axosha izinto ezincane kude ne-convolutions. Lokhu kuvimbela ukuqongelela kwemfucumfucu obekungavimbela ukunyakaza kwe-axial, indawo evamile yokwehluleka emiklamo ye-pusher ye-multi-spring. Uhlobo olumile lwe-seal yesibili—ngokuvamile i-gasket engaguquki noma indandatho ye-Grafoil—kusho ukuthi yonke inhlangano ingalandelela ukuguguleka kobuso noma ukwanda kokushisa ngokushesha ngaphandle kokunqoba ukungqubuzana kwendandatho ye-O enamandla.
Yiziphi izimo zokusebenza, izinto zokwakha, kanye nokuhlanganiswa kobuso okubalulekile
Ukucacisa ukwakheka kwensimbi okulungile kubalulekile ukuze kuhlinzekwe nge-zero-emission, njengoba amapheshana amancane (ngokuvamile angu-0.10 kuya ku-0.15 mm ubukhulu) asengozini enkulu yokuhlaselwa yi-grub. Imisebenzi ejwayelekile ivame ukusebenzisa insimbi engagqwali ye-AM350, kodwa izindawo ezinolaka zidinga ama-alloy athuthukisiwe. Ngezinsizakalo zokushisa okuphezulu noma ezigrubru kakhulu, i-Alloy 718 (Inconel) kanye ne-Alloy 276 (Hastelloy) ziyizithuthukisi ezijwayelekile. Izinhlanganisela zobuso zivame ukuhlanganisa i-Silicon Carbide ye-premium ne-Carbon Graphite (yokugcoba) noma i-Tungsten Carbide (yokumelana nokukrubru).
| Izinto Zokubhonga | Umkhawulo Wezinga Lokushisa Ojwayelekile | Amandla Okukhiqiza | Iphrofayili Yesicelo Efanele |
|---|---|---|---|
| I-AM350 Engagqwali | 315°C (600°F) | Phezulu | I-hydrocarbon ejwayelekile, izinga lokushisa eliphakathi |
| Ingxubevange 718 | 425°C (800°F) | Phezulu Kakhulu | Ukuhluzwa kwezinga lokushisa eliphezulu, ukujikeleza okushisayo okukhulu |
| Ingxubevange 276 | 400°C (750°F) | Phezulu | Ama-asidi agqwala kakhulu, amanzi amuncu, ukucubungula amakhemikhali |
Yiziphi izindlela zokwehluleka kanye nemikhawulo yokusebenza okufanele icatshangelwe
Naphezu kokuqina kwazo, izivalo zensimbi zinemikhawulo ethile yokusebenza okumele onjiniyela bayihloniphe. Izivalo ezijwayelekile ze-single-ply ngokuvamile zilinganiswa ngokucindezela okuphezulu kokusebenza okungu-20 kuya ku-25 bar (300 kuya ku-360 psi). Ekusetshenzisweni okungaphezu kwalezi zingcindezi, amapheshana amancane asengozini yokuphambuka okubangelwa yingcindezi noma "ukugoba." Imiklamo ye-multi-ply ingandisa lo mkhawulo uye ku-60+ bar, kodwa ngezindleko zokuqina kwesivinini sentwasahlobo okwandisiwe.
Izindlela zokuhluleka kuma-bellow seals zihluke kakhulu kuma-pusher seals. Ukucheba okugobile kungenzeka uma i-viscosity yoketshezi iphakama noma uma ubuso besivalo buqala ukoma futhi bubopha, kuphendukezela amaqabunga acwebezelayo athambile. Ukuqhekeka kokukhathala kungenye ingozi uma i-shaft ibonisa ukudlidliza okukhulu kwe-radial. Okokugcina, ngenkathi ama-bellows emelana nokugoba kangcono kune-pusher seals, ukuqongelela okukhulu kwama-hydrocarbon aqinile phakathi kwama-convolutions kungenza ama-bellows aqine, kudingeke ukuthi umusi ucime ekusetshenzisweni kwamafutha asindayo.
Indlela Izimbobo Zensimbi Eziqhathaniswa Ngayo Nezinye Izinhlobo Zezimbobo
Ukukhetha uphawu olufanele lomshinikudinga ukuhlaziywa okuqhathanisayo okujulile kokuthi izakhiwo ezahlukene zisabela kanjani ezingcindezini zenqubo ngokuhamba kwesikhathi. Ngenkathi izimbobo zensimbi ezithambile zinikeza izinzuzo ezihlukile ezindaweni ezinzima, ukuqonda indawo yazo yokuncintisana ngqo ngokumelene nezimbobo ze-pusher kanye nezimbobo ze-elastomeric kubalulekile ekwenzeni ngcono ukuthembeka kwesitshalo kanye nokufeza imiyalelo yokukhipha ukungcola okungenayo i-zero.
Yiziphi izindlela zokulinganisa kangcono ukusebenza kwe-zero-emission
Ukuhlola ikhono lesivalo senkonzo yokukhipha ukungcola okungenalutho kuncike ezicini ezintathu eziyinhloko: amazinga okuvuza aguquguqukayo, i-bandwidth yokushisa, kanye ne-MTBF yesikhathi eside (Isikhathi Esiphakathi Phakathi Kokwehluleka). Ukuvuza okunamandla kuvame ukubalwa ngama-milliliters ngehora (ml/hr) koketshezi noma izingxenye ngesigidi (ppm) samagesi aguquguqukayo. Ukuze ufanelekele isevisi yokukhipha ukungcola okungenalutho, isivalo kumele sibonise njalo ukuvuza okungaphansi kwama-500 ppm ngaphansi kwezinqubo zokuhlola ze-API 682.
I-bandwidth yokushisa ilinganisa ikhono lobuchwepheshe lokugcina ukulandelela ubuso ngesikhathi sokushintshashintsha kwezinga lokushisa okusheshayo ngaphandle kokuwohloka kwesibili kwesivalo. Okokugcina, i-MTBF ihlola ukusebenza okuqhubekayo; isivalo se-premium zero-emission kufanele sisebenze ngokwethembeka amahora angaphezu kuka-25,000 (cishe iminyaka emithathu) ngaphambi kokudinga ukulungiswa, kucatshangelwa izimo zenqubo ezizinzile.
Indlela izimbobo zensimbi ezihambisana ngayo nezimbobo ze-pusher kanye ne-elastomer bellows
Uma kulinganiswa ngemiklamo ehlukile, izivalo zensimbi zithatha indawo ephezulu yesevisi enzima. Izivalo ze-Pusher zisebenzisa izindandatho ze-O ezinamandla okumele zishelele eceleni kweshafti ukuze zilungise ukuguguleka kobuso. Lesi senzo sokushelela sibangela i-hysteresis—ukubambezeleka ekulandeleni ubuso—futhi siphumela ekusheleleni, okushelela ngokoqobo ishafti noma isikhafu, ekugcineni kudale indlela yesibili yokuvuza. Izivalo ze-Elastomer ziqeda ukushelela kodwa zinqunyelwe ngokuqinile ukuhambisana kwamakhemikhali kanye nemikhawulo yokushisa yerabha (ngokuvamile ehluleka ngaphezu kuka-150°C).
| Isici/Isilinganiso | I-Metal Bellows Seal | Isivalo Sokucindezela (Intwasahlobo Eningi) | Uphawu lwe-Elastomer Bellows |
|---|---|---|---|
| Isivalo Sesibili Esiguquguqukayo | Akukho (Okungaguquki) | Indandatho ye-O / i-PTFE Wedge | I-Elastomer |
| Ibanga Lokushisa Elijwayelekile | -75°C kuya ku-425°C | -40°C kuya ku-200°C | -20°C kuya ku-150°C |
| Ingozi Yokukhukhuleka Kweshaft | U-Zero | Phezulu | U-Zero |
| I-Dynamic Hysteresis | Akukho | Ukungqubuzana okuphezulu (i-O-ring) | Phansi |
| Ukucindezela Okujwayelekile Okuphezulu | Ibha engu-25 (I-single-ply) | Ibha engaphezu kuka-40 | Ibha engu-15 |
Yikuphi Okwenza Kusebenze Kakhulu I-Metal Bellows Seal
Ukufeza ukusebenza kwe-zero-emission akuyona nje indaba yokuthenga uphawu lwensimbi olunezimbobo; kudinga ukunamathela kubunjiniyela obuqinile, ukufakwa, kanye nezinqubo zokusebenza. Ukuhlanganisa lezi zimbobo ohlakeni oluthembekile kakhulu kuqinisekisa ukuthi izinzuzo zemfundiso yokwakheka kwe-bellows ziyafezeka ezimweni zangempela zasensimini.
Yimaphi amazinga kanye nezimfuneko zokuthobela imithetho ezisebenzayo
Indinganiso ebusayo yezivalo zomshini emikhakheni kawoyela, igesi, kanye ne-petrochemical yi-API 682 (ISO 21049). Ngaphansi kwale ndinganiso, izivalo zensimbi zihlukaniswa njengoHlobo B (izivalo ezijikelezayo) noma uHlobo C (izivalo ezimile). Ukuze kulandelwe ukukhishwa kwegesi okungakhiphi lutho ezinsizakalweni ze-VOC eziyingozi, opharetha bavame ukucacisa amalungiselelo okuvalwa okubili kweSigaba 2 noma kweSigaba 3 (Uhlelo 2 noma 3).
Ukuhlelwa kwe-Arrangement 3, kusetshenziswa uketshezi lwesithiyo olucindezelwe, kuqinisekisa ukuthi noma yikuphi ukuvuza ebusweni be-primary seal kuqukethe uketshezi lwesithiyo olungenabungozi kunokuba kube yindlela yenqubo eyingozi. Ukuhambisana nemigomo yesifunda yezemvelo, njengezindinganiso ze-EPA's Maximum Achievable Control Technology (MACT), kuncike kakhulu ekusebenziseni lezi zinhlelo ze-API 682 ezihambisana ne-API.
Yiziphi izinyathelo zokufaka kanye nezindlela zokucacisa ezivimbela ukwehluleka kwasekuqaleni
Ukwehluleka kwangaphambi kwesikhathi kwezivalo zensimbi kuvame ukulandelwa amaphutha okufakwa noma imininingwane engaphelele. Ngenxa yokuthi amapheshana e-bellows azwela kakhulu ekuphazamisekeni komshini, ochwepheshe kumele baqinisekise ukuthi ukugijima kwe-shaft akudluli ku-0.05 mm (0.002 inches) Ukufundwa Kwenkomba Ephelele (TIR). Ukugijima ngokweqile kuphoqa ukugijima kwe-bellows ukuthi kugobe kumaza aphezulu, okusheshisa ukukhathala kwensimbi kanye nokuqhekeka kwe-weld.
Ngesikhathi sesigaba sokucaciswa, onjiniyela kumele bacabangele ukuziphatha koketshezi ekucindezelweni komoya. Kuma-hydrocarbon asindayo akhipha i-oxidize noma i-coke lapho evezwa emoyeni, ukucacisa i-API Plan 62 steam quench kubalulekile. Ingubo yomusi ivimbela ukwakheka kwama-coke deposits abrasive ohlangothini lomoya lwamapheshana e-bellows, obekungavimbela ukunyakaza kwe-axial futhi kubangele ukuvuza.
Indlela yokuqapha isimo kanye nokugcinwa kohlelo
Ukuqapha isimo okuqhubekayo kuyisisekelo sokugcina sokuthembeka kokukhishwa komoya ongcolile. Kuma-seal ensimbi amabili, lokhu kuhilela ukusebenzisa i-API Plan 52 (i-tandem engacindezelwanga) noma i-Plan 53 (i-double pressurized) amapayipi. Ekusethweni kwe-Plan 53A, uketshezi oluvimbelayo kumele lugcinwe kungcindezi engu-1.5 kuya ku-2.0 bar (22 kuya ku-30 psi) ngaphezu kwengcindezi ephezulu yegumbi lesivalo.
Abasebenzi kumele baqaphe ingcindezi yoketshezi oluvimbezelayo kanye namazinga edamu njalo. Ukwehla okungazelelwe kwengcindezi yokuvimbela noma ukuncipha okusheshayo koketshezi lwedamu kubonisa ukuwohloka kobuso okuyinhloko noma okwesibili. Ngokuhlanganisa lezi zinhlelo zokuqapha uketshezi ne-plant DCS (Distributed Control Systems),amaqembu okulungisaingaguquka kusukela ekulungisweni okuphuthumayo okusabelayo iye ekulungisweni okubikezelayo, ilungise uphawu ngaphambi kokuba imingcele yemvelo yephulwe.
Indlela Abathengi Okufanele Banqume Ngayo Ukuthi Bazosebenzisa Nini Izivalo Zensimbi Ze-Bellows
Ukushintshela ezivalweni zensimbi ezishayayo kumelela ukuzibophezela okukhulu kwezimali kanye nobunjiniyela. Amaqembu okuthenga nokuthembeka kumele alandele inqubo yokwenza izinqumo ezibaliwe ukuqinisekisa ukuthi ukutshalwa kwezimali kokuqala okuphezulu kuqinisekiswa yizidingo zesicelo kanye nembuyiselo yempilo ephumelayo.
Yiluphi uhlu lokuhlola lwesicelo okufanele luqondise ukukhetha
Ukuze inqubo yokukhetha ihambisane, amaqembu obunjiniyela kufanele asebenzise uhlu lokuhlola oluqinile lwesicelo. Izivalo zensimbi kufanele zigunyazwe uma isicelo sihlangabezana nenye noma ngaphezulu kwalezi zindlela ezilandelayo:
- Amazinga okushisa okupompa adlula u-200°C (400°F) noma ehla ngaphansi kuka--40°C (-40°F).
- Uketshezi lwenqubo luqukethe imikhawulo eqinile yokukhishwa kwe-VOC edinga ukugoqwa komoya okungaphansi kuka-500 ppm.
- Uketshezi lunokuthambekela okuphezulu kokubumba, ukubumba, noma ukubumba i-coke lapho luchayeka emoyeni.
- Amarekhodi omlando okugcinwa kwemishini abonisa ukwehluleka njalo kokufaka uphawu lokusunduza ngenxa yokulenga kwe-O-ring noma ukushaqeka kweshaft.
Uma ukusetshenziswa kuhilela amanzi ahlanzekile, anokushisa okuphansi noma uketshezi olungeyona ingozi olusebenza ngaphansi kuka-150°C ngokucindezela okuphakathi, i-pusher ejwayelekile noma i-elastomer bellows seal inganele. Kodwa-ke, kunoma iyiphi insizakalo ehlukaniswe njengeyingozi, enobuthi, noma enokushisa okukhulu, i-metal bellows seal iyindlela efanelekile ngokobuchwepheshe.
Indlela yokulinganisa izindleko kusengaphambili nenani lomjikelezo wokuphila
Izindleko zokuthenga kusengaphambili zesivalo sensimbi esenziwe ngokugcwele ngokuvamile ziphakeme ngo-1.5x kuya ku-2.5x kunesivalo se-pusher esilinganayo esinezintwasahlobo eziningi. Kodwa-ke, ukuhlola ubuchwepheshe kuphela ekusetshenzisweni kwemali yokuqala akunaki umthelela omkhulu ku-Total Cost of Ownership (TCO).
Ngokususa ngokuphelele i-shaft kanye ne-sleeve fretting, izivalo zensimbi zonga izinsiza eziphakathi kuka-$2,000 no-$5,000 ngokulungiswa kwephampu ngayinye ezindleleni zokufaka esikhundleni sehadiwe kanye nomshini.
Izinto Ezibalulekile Okufanele Uzicabangele
- Iziphetho ezibaluleke kakhulu kanye nesizathu se-Metal Bellows Seals
- Imininingwane, ukuhambisana, kanye nokuhlolwa kwengozi okufanele kuqinisekiswe ngaphambi kokuthi uzibophezele
- Izinyathelo ezilandelayo ezisebenzayo kanye nezixwayiso abafundi abangazisebenzisa ngokushesha
imibuzo ejwayelekile ukubuzwa
Kungani izivalo zensimbi zingcono kumaphampu angenawo ugesi?
Zisusa i-O-ring enamandla, zinciphisa ingozi yokuvuza ngenxa yokuguguleka, ukushisa, kanye nokushaqeka kwe-shaft. Lokhu kusiza izitshalo ukuthi zihlangabezane nemikhawulo eqinile yokukhishwa kwe-VOC ngokuvala okuzinzile isikhathi eside.
Yiziphi izinhlelo zokusebenza ezizuza kakhulu ezivalweni zensimbi ezincelisayo?
Zisebenza kahle kakhulu ezinsizeni eziqukethe amazinga okushisa aphezulu, ezisebenzisa i-cryogenic, i-polymerizing, i-coking, kanye ne-solids lapho izimbozo ze-pusher ezisekelwe ku-elastomer zivame ukwehluleka noma ukulenga.
Ingabe iVictor Seals ingahlinzeka ngezivalo zensimbi ezihambisana ne-OEM?
Yebo. I-Victor Seals inikeza izivalo zensimbi kanye nezindawo zokufaka esikhundleni ezihambisana ne-OEM zezidingo eziningi zokulungiswa kwamaphampu ezimboni, kufaka phakathi izinhlobo ezikhethiwe ezinkulu zamaphampu.
Izivalo zensimbi ezisebenzisa izinsimbi zithuthukisa kanjani ukuthembeka ekusebenzeni okunzima?
Izimbobo ezihlanganisiwe zinikeza amandla entwasahlobo kanye nokuvala okwesibili, ngakho-ke ayikho i-elastomer eshelelayo yokunamathela, ukuqinisa, noma ukuguguleka. Lokhu kusekela i-MTBF ende kanye nokusebenza kokuvala okuzinzile.
Yini okufanele abathengi bayihlole ngaphambi kokukhetha uphawu lwensimbi olusebenzisa izinsimbi?
Qinisekisa uhlobo loketshezi, izinga lokushisa, ingcindezi, usayizi womgodi, izinto zobuso, kanye ne-metallurgy. Ukuze uthole isevisi eyingozi, qinisekisa futhi imigomo yokukhipha ukungcola kanye nokuhambisana kwemodeli yephampu nomhlinzeki wakho wesivalo.
Isikhathi sokuthunyelwe: Juni-03-2026