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Ngā Tikanga Whakapono Matua o Ngā Huinga Mekanikai Toimaha
Te Aukati i ngā Rere i ngā Tikanga Toihau Mātātoko (10 MPa)
Ngā tohu mākawe e hoahoa ana mō te aukati i ngā tūponotanga pēhi tikangia tōrunga, e tō ana i ngā kaha wai e whakakīia ana i ngā rerekētanga o te pēhi neke atu i te 10 MPa. Ina taraweti ana ngā kaha tuarā i runga i ngā mata tohu, ka mau tonu te pānga pai i waenganui i ngā wāhanga ahakoa ngā pikitanga pēhi tūmatanui, ā, he nuinga rawa ngā takotoranga uaua e neke ana ngā pūmanawa i ngā mea kino pērā i ngā matūpiro hāngai, ā, he wera rawa te waimāori. Ko ngā kaha tōtoria anō hoki e awhina ana kia maroke ai, nā te mea ko te wera e hua mai ana i te mira hāngai. Ka timata te pakaru o ngā matapae ki te 150 degrees Celsius, nō reira he mea nui te whakahaere i te wera kia aukatia ai ngā rere. Ko ngā pūpahi metara marokei hei tohu pupuri i ēnei pūnaha. E whakarerekē ana rātou ki ngā nekenga o te porowhita e hua mai ana i ngā panonitanga o ngā uta kāore i te waihanga i ngā wāhi hou e rere ai te wai, nā reira he wāhanga matua nui ki ngā whakaratonga tohu tūmatakura.
Manawaroa Wear: Whakahaere Miramira me te Ora Muka Muka ki te 20–50 MPa
Ko te mātai ki te ware i te wā e whai ana ki te pēhi tino nui he nui ake te painga ki ngā matapae kua whanauhia me te rerekētanga o ngā mata. Ko ngā takotoranga o te karapihitini tuatara ka kitea noa i ngā ratonga parakore kei reira e piki ana ngā pēhi ki te 30 MPa. Ka eke ēnei matapae ki ngā uara iti rawa o te Vickers i runga ake i te 1,500 HV e āwhina ai i a rātou kia tū against te mate mai i ngā pātu kōhatu. I te wā e whakamahia ana te tapahi reihana ki ngā mata, ka hangaia te 'mīkaro-hūropiko hōpū'. Ka heke pea te tauira herehere i raro i ngā tikanga herehere ā-rohe ki raro iho i te 0.05. Te putanga? Ka roa ake te ora kikokiko i te 25,000 haora mahi nā te mea kāore ngā pakaru e timata ana ngawari i raro i ngā tarukitanga ngawari. I whakaatu ngā tātai i tētahi mea hoki hihiri: ko ngā mata tino makrara me ngā ine Ra i raro iho i te 0.1 mikirimita ka heke i te kotahi hautoru ngā tere ware kōpae ina whakarerekengia ki ngā mata noa ina tāpihitia ki ngā pēhi 50 MPa. E whakaatu pā ana tēnei he aha te take e nui ake ai te whakahaere i te kounga mata hei tiaki i te roa o ngā wae taputapu i te ratonga.
Ko te Hinonga me te Whanaketanga Ahumahi mō te Mahi i ngā Pūtake Tino-Āhua
Tungsten Carbide vs. Silicon Carbide: Ko te Kawenga o te Whakapaku, te Uaua, me te Tūhono o te Matatoko
Ko te karbait tūngatanga (TC) me te karbait hīora (SiC) e kauwhia ana ētahi āhuatanga motuhake mō te whakamau i ngā tikanga pēhara. Ko te karbait tūngatanga e mārama ana nā tōna pānga pai ki ngā pakanga, ko te āhua o te pānga kino kei waenganui i te 15 ki te 20 MPa√m. Ka nui ake tana whai wāhi ki ngā pūnaha e nui ana te pānga, ina nui ake te pēhara i te 20 MPa. I te taha atu, he mea e kore nei te TC e ōrite ai te SiC – he arataki hihiko tino pai, pēnei i te 40% ake. Ka āwhina tēnei kia wehe te wera e hāngia mai ana ki ērā wāhi e reri ana, e hua ana i te huringa. Ko te putanga? Kei roto i te 0.0003 ineti anake te tatapa o te mata, āno he whakapau tonu i ngā wāhi e 300°C, ka iti ake ngā kiripaka wera. Me kaua hoki e wareware te āhua o te pūkaha. Ki runga ake i te 2500 HV, ka taea e SiC te pupuri i te parurenga o ngā pārtihikara i roto i ngā reanga, tino pai ake i ētahi atu matēra. Kua timata ngā umanga e honohono ēnei e rua matēra e whakamahia ana ngā tikanga hononga takirua. Mā te whakakotahi i te kaha o TC me ngā āhuatanga whakahaere wera o SiC, e 60% ake pea te roa o ēnei huinga hou i ngā pūmpa puipui paraihe mō ngā taiapa tawhito i whakamahia ane i tētahi, i tētahi rānei. He mea tika kia harikoa ngā kaihanga mō tēnei whanaketanga.
Hoahoa Kōpae Mīhini: Whakakore i ngā Tāwhai Tuarua me te Whakanui i te Maruaha o te Tōraro
Ko te raru nui rawa i ngā pūnaha toki māia ko ērā anuanu o waho i ngā herema tuarua. Ko ngā raraunga a te ahumahi e whakaatu ana ko te paku 70% o ngā tautohe tōmuri ka hua i te wāhi ka neke ake i te 10 MPa. Ko te hangarau mētara pūkana e whakatū ake nei i te raru. I hangaia i tētahi takotoranga kotahi o tētahi pūtau e pāngia ana ki te kōhatu, hei tauira ko te Hastelloy, ā, i hangaia hoki mā te whakauru i te wehenga i te tikanga o te huinga, ka wekenga ngā wāhi e rū ana, ā, ka taea hoki ngā kaha whakakī e tae ana ki te 50 MPa. Ko te āhua āhua kōpae e toru ngā wā te whanuitanga ki te tārua i te tārua i ngā kōwhiringa mātātoko noa. Ko te tikanga, ko te pānga ā- mata hea ake ake, ā, ko te pānga tōmuri i ngā huringa tōki e hua ana i ngā wā katoa i ngā mahi kōpae hinu me te kāpua. Mō ngā whakaritenga e mahi ana ki ngā huinga e kī ana ki te hāpori tūaroto, e ripoata ana ngā kaiwhakahaere kua roa ake te wā o te tiaki e te 18 marama i te wā i te mētara pūkana i te wā i te rānei mō ngā herema tūhura e tino pakaru ana i te wā poto noa i te pānga ki te pānga o ngā matātoko me te pānga kimikara i te wā roa.
Ngā Taupānga Whakamana Pūnga Whakahaere Pēhi-Ita Tōaitanga i runga i ngā Tūmatanui Mātua
Ngā Pūpahi Kaiwhanga Kōhuke: Whakahaeretia ngā Tōaitanga Pēhi Mātua me ngā Kīunga Kua Hangaia e te Cavitation
Ko ngā pūmpu whakaputa kōhinu e āhua ana ki ngā koretake takirua nui, tae atu ki ngā paringa toki i runga ake i te 20 MPa me ngā kaha pakaru e kīa ana i ngā mata herema mā te ngunguru iti. Ki te whakaora i ēnei raru, kei ngā herema tikangia anō ngā mata koirihi hiko kihini me ngā tauira waiarawa motuhake e mau ai te kounga o te rerenga wai ina huri noa ngā tikanga. Kātahi ka kore pea te pūmpu e rere maroke ina huri haere ngā uta, ā, ka taea hoki e ēnei āhuatanga matatau te whakahaere i ngā tere rerekē o te whānuitanga o ngā wāhanga rorohiko ki ngā wāhanga tuimotu ina huri ngā wera. I whakamātauria i ētahi pūmanawa, i kitea he toronga o te 60% i ngā herenga herema mō ēnei pūmpu kua whanaketia ki ngā tauira tawhito, ina nui ake ina timata ana te pūmpu ina tae ai ngā panonitanga toki ki ngā putake tata ki te 35 Hz.
Ngā Kōhinu Mātai-oil me te Miriro: Te Maru ki te H₂S, ngā Pirepire Korekore, me ngā Take Tuarangi Paringa
He uaua rawa ngā wero e āhua ana ngā tohu mekameka i te whakarerekenga o ngā karohirohi. Me kawe i ngā rahi o te haitori kōwai tūpuhi i runga ake i te 5,000 ngā wā e miriona, me whakahaere i ngā panonitanga pH e neke haere ana mai i te horoi tino whakangē ki ngā tikanga tino pūpahi, ā, me mōhiotia hoki ngā piki tōkari pēhi e pā ana ki te 50 megapascals. Inaianei ko ngā hoahoa tohu kounga ake e hono ana i ngā mata karaiti tukena me ngā hanganga parirau nīkera, nā reira kāore he waahanga kirimea e hiahiatia ake. Kātahi ka mutu ēnei hanganga metara anake i te urunga o ngā kikokiko kino i te wā e taea ai te nuinga o te nekenga ina piki ana te pēhi mō te toronga haurua, e puta ana hinga tahi i ērā atu i ngā tautohe e ū ana. I ngā whakamātautau mara i muri i ngā arataki NACE MR0175 ka whakaatu mai ko ēnei tohu whanaketia e ora ana pēnei i te 80% ake i mua i te hiahia ki te whakakapi i ngā tono komipihana e mahi ana me ngā kikokiko para. E nui ake nei tāritea ki ngā hangarau tohu tawhito i kore ai e taea te āhua i ēnei taiao uaua.
FAQ
He aha ngā herema mekameka me te take i te nui ai?
Ko ngā herema mekameka he taputapu e whakamahia ana hei aukati i ngā rere o wāhi e rere ana me ngā wāhi tu ana i roto i ngā pūnaha rereke, āhuareka ana ina ko te pēhi tōke tōke te pēhi. He tino matua nui ki te pupuri i te kiko o te pūnaha ki te aukati i ngā rere wai, te whakapaua i te ora o ngā wāhi, me te whakarere i ngā utu tiaki.
Me pēhea e aukati ai ngā herema mekameka pēhi tōke ki te rere?
Ko ngā herema mekameka pēhi tōke e aukati ana i ngā rere mā te whakarārangi i ngā kaha hyaraureki e whakatōke ana i ngā rerekētanga pēhi, nō reira ka pupuri tonu te pā ki waenganui i ngā mata herema ahakoa te pēhi tōke, te rūrū rānei.
He aha ngā matāwai e whakamahia ana mā te wā i ngā herema pēhi tōke?
Ko ngā matāwai pērā i te tungsten carbide me te silicon carbide e whakamahia ana mā te wā no te aukati ki te ware, te arataki wera, me te pūkaha. Ka taea e ēnei matāwai te tino tautapa i te pēhi tōke me te wera, e tuku ana i te whakapono me te roa.
Ko tē aha ngā umanga e whai hua ai te tino mō ngā herema mekameka pēhi tōke?
Ngā ahumahi pēnei i te hinu me te kātua, te tukutuku matū, te whakapau mākae, me ētahi atu rohe e mahi ana ki ngā tikanga kino, heke rānei e pai ake ana ki te whakamahi i ngā tohu mākae, ina hurihia ana ki te haere i ngā tikanga tino, me te roa o te tiaki.