Lokacin da kuka ji 'check valve stellite', yawancin injiniyoyi nan da nan suna tunanin wannan maɗaukakin ƙarfi, cobalt alloy mai jurewa da aka mari akan kujera ko diski. Wannan ba laifi ba ne, amma daga nan ne ake farawa da wuce gona da iri. Ainihin labarin ba abu ne kawai ba; aure ne tsakanin tushen bawul jiki-sau da yawa carbon ko bakin karfe simintin gyare-gyare-da kuma Layer na Stellite. Na ga gazawa da yawa inda takaddun ƙayyadaddun bayanai suka yi kama da kamala, amma aikace-aikacen bala'i ne saboda wani ya ɗauki hardfacing a matsayin harsashi na sihiri, yin watsi da ma'auni, tsari, da ainihin yanayin sabis. Bari mu yi magana game da ainihin abin da ke faruwa a cikin shago da kuma cikin filin.
Auren da Ba a Fahimta ba: Substrate da Overlay
Ba za ku iya kawai walda Stelite akan wani abu ba kuma kuyi tsammanin zai riƙe. Ƙididdigar haɓakar haɓakar thermal tsakanin, a ce, daidaitaccen jikin CF8M da haɗin haɗin cobalt sun bambanta. Idan pre-zafi bai yi daidai ba, ko kuma idan jerin walda ya kashe, kuna samun tsagewa. Ba nan da nan ba, watakila, amma za su yadu a ƙarƙashin hawan keke na thermal. Na tuna da batch na 10 duba bawul don shuka sinadarai inda abokin ciniki ya dage akan iyakar taurin. Shagon ya yi cikakken rufi, lambobin Rockwell C sun kasance masu tauraro, amma sun rasa matakin rage damuwa akan jikin 316L. Watanni shida a cikin, mun sami tsagewar gashin gashi a yankin da zafi ya shafa, wanda ke haifar da zubewa. Stellat yayi kyau; dubawa ta kasa.
Wannan shi ne inda kwarewar kafuwar ba za ta iya yin sulhu ba. Wani kamfani kamar Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), tare da shekarun da suka gabata a cikin ƙirar harsashi da saka hannun jari, sun fahimci wannan a zahiri. Ba kawai machining wani sashi ba ne; suna la'akari da dukan tsarin rayuwa daga narkakken karfe matakin. Lokacin da ka fara da ainihin simintin bawul ɗin bawul ɗin su daga kayan aikin su, za ka sami tsarin hatsi mai sarrafawa da ingantaccen amincin. Rabin yakin da aka yi nasara kenan tun kafin a fara wani mawuyacin hali. Ayyukansu tare da gami na musamman yana nufin sun fahimci tattaunawar ƙarfe tsakanin kayan.
Zabar ma'aunin Stelite mai kyau wani matsala ne. Stellite 6 babban mayaƙi ne na gaba ɗaya, mai girma don abrasion da lalata matsakaici. Amma don cavitation mai tsanani ko sabis na acid mai zafi? Kuna iya kallon Stelite 12 ko ma madadin tushen nickel. Na taɓa yin jayayya da manajan sayayya wanda ke da Stellite akan PO kuma ya ƙi ƙididdige darajar. Mun sami Stellite 6, wanda ya ɓata da sauri a cikin matsanancin zafin jiki, ƙwanƙolin ƙorafi. An duba bawul ɗin, amma bai daɗe ba. Takaddun bayanai dole ne su dace da gaskiyar.
Rawar Machining: Daidaitawa Bayan Gaskiyar
Ga gaskiyar da wasu ke mantawa: yin amfani da Stellite fasaha ɗaya ce; machining shi wani dabba ne gaba ɗaya. Wannan kayan yana cin kayan aikin yankan. Kuna buƙatar saitunan CNC masu tsattsauran ra'ayi, daidaitattun maki na carbide ko CBN abubuwan da aka saka, da ciyarwa/gudu da aka buga a ciki don guje wa aiki tauraruwar saman gaba. Ba aiki ba ne don daidaitaccen bita. Manufar ita ce cikakkiyar hatimi, wanda ke nufin fuskokin mating-zama shine duba bawul stelite wurin zama da fayafai — suna buƙatar ƙarewar saman da ke sau da yawa a cikin daular 16 Ra ko mafi kyau.
Na ziyarci shagunan inda aikin injin bayan walda ya kasance abin tunani. Sakamakon? Ƙanƙarar maɗaukaki, alamomin magana, ko rashin daidaituwa. Bawul ɗin ya wuce gwajin benci tare da iska, amma a ƙarƙashin tsarin matsa lamba da zafin jiki, yana kuka. Haɗe-haɗen tsarin QSY, inda injinan CNC shine babban ƙwarewar aiki tare da simintin gyare-gyaren su, yana haifar da bambanci. Za su iya sarrafa gaba dayan tsari daga danyen simintin gyare-gyare zuwa na'ura mai cikakkar injuna da taurin fuska, tabbatar da cewa wuraren da ake yin injinan sun yi daidai da ma'aunin welded mai rufi. Wannan ci gaba yana rage yawan juriya.
Kuma bari mu yi magana game da faifai. Sau da yawa, wurin zama kawai yana da tauri. Amma idan faifan ya kasance bakin karfe 316, kujerar Stelite zai yi zafi a kan lokaci, musamman a aikace-aikacen dubawa mai yawa. Mafita? Wani lokaci kushin Stelite akan diski shima, ko kuma wani magani mai tauri daban. Tsari ne. Na koyi wannan hanya mai wuya akan layin sake sarrafa kwampreso. Kujerar tana da kyau, amma faifayen kamar an kai masa hari. Sakamakon barbashi na ƙarfe ya haifar da barna a ƙasa. A cike stelite mai rufi a kan duka sealing saman ya warware shi.
Hanyoyin gazawa da Duban Filin
Ba koyaushe akan sawa bane. Na ga lalata galvanic yana kashe mai kyau daidai stelite taurin fuska duba bawul. A cikin aikace-aikacen ruwan teku, Stellite mai daraja (cobalt-rich) da jikin bakin ƙarfe mara ƙarancin daraja ya haifar da kwayar galvanic. Karfe da ke kewaye da mahadar walda ya lalace, yana lalata rufin. Darasi? Keɓe gaskets, kariyar cathodic, ko zaɓin abu dole ne ya ƙunshi duk mahallin lantarki. Mai kaya mai kyau yakamata yayi waɗannan tambayoyin, ba kawai ɗaukar oda ba.
Wani gazawar dabarar ita ce zazzagewar kujerar. A cikin bawul ɗin dubawa mai jujjuyawa, kwararar na iya shiga bangon jikin da ke gaban wurin zama kafin diski ya rufe. Idan wannan yanki ne kawai carbon karfe, zai lalatar da shekaru, canza kwarara kuzarin kawo cikas da kuma haifar da tashin hankali wanda ya hana mai tsabta hatimi. Na ga hanyoyin sake fasalin inda aka ƙara sa hannun rigar Stellite a wurin, ƙayyadaddun da aka haifa daga ɓarnawar filin, ba ƙirar littafin rubutu ba.
Sannan akwai maganin zafi. Ana buƙatar maganin zafi bayan walda (PWHT) sau da yawa don jikin mai ɗauke da matsi, amma ana iya lalata kaddarorin Stelite idan zafin ya yi yawa. Tafiyar igiya ce. Kuna buƙatar hanyar da ta gamsar da lambar (kamar ASME B16.34) don jikin bawul yayin da kuke kare mutuncin hardfacing. Wannan yana buƙatar ƙwararrun hanyoyin walda (WPS/PQR) da zurfin fahimtar hulɗar. Babban shagunan sayar da kayayyaki suna yin wannan; kwararru suna gasa shi cikin tsarin su.
Gaskiyar Sarkar Bayarwa: Wanene Ka Aminta?
Wannan yana kawo mu ga ganowa. Kasuwar ta cika da bawul ɗin rajista masu arha waɗanda ke da'awar kujerun Stelite. Sau da yawa, murfin bakin ciki ne na feshi-da-fus, ba madaidaicin welded mai rufi ba tare da isasshen kauri don rayuwar sabis da sake yin injina. Bambancin farashi yana da mahimmanci, haka kuma shine bambancin tsawon rayuwa. Don layin ruwa mara mahimmanci, watakila murfin bakin ciki yana da kyau. Don babban layin tururi ko magudanar ruwa mai mahimmanci? caca ne.
Yin aiki tare da masana'anta wanda ke sarrafa simintin sa da injina, kamar ƙungiyar a Qingdao Qiangsenyuan Technology Co., Ltd., yana ba da damar ganowa. Kuna iya tattauna hanyar yin simintin gyare-gyare (tsarin gyare-gyarensu na harsashi yana ba da daidaito mai kyau ga sassa daban-daban), takaddun kayan aikin ƙarfe na tushe, batch ɗin sandar walda, da machining rajistan ayyukan. Lokacin da matsala ta taso, akwai jerin shaidu don gano ta. Tsawon tarihin su, ana iya gani akan rukunin su a https://www.tsingtaocnc.com, A cikin sarrafa komai daga simintin ƙarfe zuwa cobalt alloys yana nuna sun ga waɗannan hulɗar kayan aiki a baya.
Na tuna duban wani dillali wanda ya ba da kwangilar komai: simintin gyare-gyare daga masana'antar A, walda daga shagon B, mashin ɗin shago C. Ragewar sadarwa ta kasance bala'i. Mashin ɗin ya datse wurin zama mai nauyi sosai, inda ya fasa layin Stella zuwa cikin ƙarfen gindi. Maimakon soke shi, sai suka sake gina shi, suna haifar da rashin ƙarfi, madaidaicin hanyar wucewa. Ya gaza a gwajin gwajin ruwa. Haɗaɗɗen masana'anta yana rage waɗannan haɗarin kashe hannu. Hannun hagu ya san abin da hannun dama yake yi.
Ƙarshe Ba tare da Rukuni ba: Game da Tsarin ne
Don haka, lokacin da kake bayyana a duba bawul tare da stelite, ba da gaske kuke ƙayyade samfur ba. Kuna ƙayyade tsari. Tsarin da ke fahimtar ƙarfe, ƙarfin zafin jiki, injina daidai, da yanayin gazawar duniya. Tikitin kayan abu shine kawai layin buɗewa.
Makullin shine haɗin gwiwa tare da masu ƙirƙira waɗanda suka tambayi dalilin da yasa za a yi amfani da shi, ba kawai abin da kuke so ba. Yakamata su matsa baya kan buƙatun da ba a bayyana ba. Mafi kyawun sakamako da na gani sun fito ne daga alaƙar haɗin gwiwa inda bayanan aikin mai amfani na ƙarshe ke sanar da dabarun gina masana'anta. Shin gazawar da ta gabata saboda cavitation ko ƙaƙƙarfan yashwa? Dabarar gyara tana canzawa gaba daya.
A ƙarshe, wannan ɗan ƙaramin taurin fuska shine inci mafi mahimmanci a cikin duka bawul. Samun shi dai-daita cuɗanya ce ta kimiyya, fasaha, da darussa da aka koya— galibi hanya ce mai wahala. Ba kaya ba ne. Bi da shi kamar ɗaya, kuma tsarin zai tunatar da ku, yawanci a mafi munin lokacin da zai yiwu.
