Isampula elingaba ngu-100 mm ubude lasikwa kunoma iyiphi indawo yepayipi lomlilo elimbozwe ngepulasitiki, futhi ukuhlolwa komthelela kwenziwa ngokuvumelana nezinhlinzeko ezikuThebula 2 ezingeni lokushisa elingu-(20±5) ℃ ukuze kubonwe umonakalo ukunamathela kwangaphakathi.Ngesikhathi sokuhlolwa, i-weld izoba ngakolunye uhlangothi lwendawo yomthelela, futhi umphumela wokuhlola uzohambisana nezinhlinzeko ze-5.9.
Izimo zokuhlola umthelela
Ububanzi begama DN
Mm isisindo sesando, kg ukuphakama okuwayo, mm
15-251.0300
32 ~ 502.1500
65
80 ~ 3006.31000
Vacuum test
Ubude besampula yesigaba samapayipi (500±50) mm.Sebenzisa izinyathelo ezifanele zokuvimbela ukungena nokuphuma kwepayipi, futhi kancane kancane ukwandisa ukucindezela okungalungile kusuka ku-inlet kuya ku-660 mm hg, gcina i-1 min.Ngemuva kokuhlolwa, hlola ukunamathela kwangaphakathi, futhi imiphumela yokuhlolwa kufanele ihambisane nezinhlinzeko ze-5.10.
Ukuhlolwa kwezinga lokushisa eliphezulu
Ubude besampula yesigaba samapayipi babungu-(100±10) mm.Isifanekiso safakwa ku-incubator futhi sishisiswe ku-(300±5) ℃ ihora elingu-1.Khona-ke yayikhishwa futhi ipholiswe ngokwemvelo ekushiseni okujwayelekile.Ngemuva kokuhlolwa, khipha isampula bese uhlola ukunamathela kwangaphakathi (ukubukeka okumnyama nokumnyama kuvunyelwe), futhi imiphumela yokuhlolwa kufanele ihambisane ne-5.11.
Ukuhlolwa komjikelezo wengcindezi
Ubude besampula yesigaba samapayipi babungu-(500±50) mm.Kwasetshenziswa izinyathelo ezifanele ukuvimba indawo yokungena nokuphuma kwepayipi, futhi ipayipi lalixhunywe nohlelo lokuphakelwa kwamanzi.Amanzi agcwaliswa ukuze kukhishwe umoya, kwase kwenziwa ukuhlola okungu-3000 okushintshanayo kwe-hydrostatic kusuka ku-(0.4±0.1) MPa kuya ku-MPa, futhi isikhathi sokuhlolwa ngakunye sasingekho ngaphezu kwe-2 s.Ngemuva kokuhlolwa, ukunamathela kwangaphakathi kuzobhekwa futhi ukuhlolwa kokunamathela kuzokwenziwa ngokuvumelana nezinhlinzeko ze-6.4, futhi imiphumela yokuhlolwa izohambisana nezinhlinzeko ze-5.13.
Ukuhlolwa komjikelezo wezinga lokushisa
Ubude besampula yesigaba samapayipi babungu-(500±50) mm.Ama-specimens abekwe amahora angama-24 ezingeni lokushisa ngalinye ngendlela elandelayo:
(50±2) ℃;
(-10±2) ℃;
(50±2) ℃;
(-10±2) ℃;
(50±2) ℃;
(-10±2) ℃.
Ngemva kokuhlolwa, isifanekiso safakwa endaweni enezinga lokushisa elingu-(20±5) ℃ amahora angu-24.I-coating yangaphakathi ihlolwe futhi ukuhlolwa kokunamathela kwenziwa ngokuvumelana nezinhlinzeko ze-6.4.Imiphumela yokuhlolwa kufanele ihambisane nezinhlinzeko zika-5.14.
Ukuhlolwa kokuguga kwamanzi afudumele
Ubukhulu nobude besampula yesigaba samapayipi cishe ku-100 mm.Izingxenye eziveziwe kuzo zombili iziphetho zesigaba sepayipi kufanele ziphathwe nge-anticorrosion.Ingxenye yamapayipi kufanele icwiliswe emanzini acwengekile ku-(70±2) ℃ izinsuku ezingama-30.
Izici zokusakaza kokubuka konke komhleli
(1) Izakhiwo eziphakeme zemishini.I-Epoxy resin inokubumbana okuqinile kanye nesakhiwo samangqamuzana ahlangene, ngakho izici zayo zomshini ziphakeme kune-phenolic resin kanye ne-polyester engagcwele kanye nezinye izinhlaka ze-thermosetting.
(2) Ukufakwa kwepayipi lomlilo lepulasitiki kusetshenziswa i-epoxy resin, enokunamathela okuqinile.Uhlelo lokuphulukisa lwe-epoxy resin luqukethe iqembu le-epoxide elisebenzayo kakhulu, iqembu le-hydroxyl, isibopho se-ether, isibopho se-amine, isibopho se-ester namanye amaqembu asezindaweni ezishisayo, enikeza izinto eziphulukisiwe ze-epoxy ngokunamathela okuhle kakhulu kwensimbi, i-ceramic, ingilazi, ukhonkolo, ukhuni namanye ama-polar substrates. .
(3) izinga lokuncipha kokuphulukisa lincane.Ngokuvamile 1% ~ 2%.Ingolunye lwezinhlobo ezine-shrinkage encane yokuphulukisa ku-resin thermosetting (i-phenolic resin ingu-8% ~ 10%; inhlaka ye-polyester engafakwanga ingu-4% ~ 6%; i-silicone resin 4% ~ 8%).I-Linear extension coefficient nayo incane kakhulu, ngokuvamile i-6×10-5/℃.Ngakho-ke, ivolumu iyashintsha kancane ngemuva kokwelashwa.
(4) Ubuchwepheshe obuhle.Ukwelashwa kwe-epoxy resin empeleni akukhiqizi ama-volatiles aphansi wamangqamuzana, ngakho-ke kungaba ukubumba kwengcindezi ephansi noma ukubunjwa kokucindezela othintana naye.Ingakwazi ukusebenzisana nazo zonke izinhlobo ze-ejenti elaphayo ukukhiqiza i-solvent-free, high solid, i-powder coating kanye ne-water-based coating kanye nezinye izigqoko ezivumelana nemvelo.
(5) Ukufakwa kukagesi okuhle kakhulu.I-Epoxy resin iyi-resin ye-thermosetting enezici ezinhle ze-antistatic.
(6) Ukuzinza okuhle, ukumelana okuhle kakhulu namakhemikhali.I-epoxy resin ngaphandle kwe-alkali, usawoti kanye nokunye ukungcola akulula ukuwohloka.Uma nje igcinwe kahle (ivaliwe, ingathinteki umswakama, hhayi ekushiseni okuphezulu), isikhathi sayo sokugcina unyaka ongu-1.Ingase isetshenziswe uma ifaneleka ngemva kokuphelelwa yisikhathi.Izinto eziphulukisiwe ze-epoxy zinokuzinza okuhle kwamakhemikhali.Ukumelana nokugqwala kwayo kwe-alkali, i-asidi, usawoti kanye neminye imithombo yezindaba kungcono kune-resin ye-polyester engagcwalisiwe, i-phenolic resin nezinye i-thermosetting resin.Ngakho-ke, i-epoxy resin isetshenziswa kabanzi njenge-anticorrosive primer, futhi ngenxa yokuthi i-epoxy resin yokwelapha iyisakhiwo senethiwekhi esinezinhlangothi ezintathu, futhi ingamelana nokungeniswa kukawoyela, njll., inani elikhulu lezicelo ethangini likawoyela, ithangi likawoyela, indiza, ulwelwesi lwamadonga lwangaphakathi lwethangi lonke.
(7) Ukumelana nokushisa kwe-epoxy kuvamise ukuba ngu-80 ~ 100℃.Izinhlobo ezimelana nokushisa kwe-epoxy resin zingafinyelela ku-200℃ noma ngaphezulu.
Izinzuzo zomkhiqizo
(1) Ipayipi lensimbi yepulasitiki eboshwe linamandla amakhulu emishini, alungele ukusetshenziswa endaweni enzima;
(2) I-coating yangaphakathi nengaphandle ingavimbela i-oxidation yensimbi futhi inokumelana nokugqwala kwamakhemikhali okuhle;
(3) ukugqoka kunokunamathela okuqinile, amandla okubopha okuphezulu kanye nokumelana nomthelela omuhle;
(4) I-coefficient ye-roughness ephansi kanye ne-friction coefficient, ukumelana okuhle kakhulu nokunamathela komzimba wangaphandle;
(5) Ipayipi lensimbi eliboshwe livikela ukuguga futhi linomsebenzi omude, lilungele ukulethwa kwamanzi angaphansi komhlaba.
Isikhathi sokuthumela: May-23-2022