Ipayipi Elivunyiwe
Ukugeleza kwenqubo yilokhu:ukugeza-amanzi okuwasha-amanzi ane-alkali emnyama ukuwasha-ukukha-amanzi okugeza-ukucwiliswa-ukucwiliswa-ukucwiliswa-ukucwiliswa-hot dip galvanizing-ukufuthela kwangaphandle-ukuvuthela-moya-ukupholisa-amanzi okupholisa -Ukudlula-amanzi okugeza-ukuhlola-isisindo-isitoreji.
1, Brand kanye nokwakheka kwamakhemikhali
Ibanga kanye nokwakheka kwamakhemikhali ensimbi yamapayipi ensimbi kufanele kuhambisane nebanga kanye nokwakheka kwamakhemikhali ensimbi yamapayipi amnyama njengoba kucaciswe ku-GB/T3091.
2, Indlela yokukhiqiza
Indlela yokukhiqiza yepayipi elimnyama (i-welding yesithando somlilo noma i-welding kagesi) ikhethwa ngumkhiqizi.I-hot-dip galvanizing isetshenziselwa ukuvuthela.
3. Intambo nepayipi ehlangene
(a) Emapayipini ensimbi anezinsimbi ezilethwa ngemicu, izintambo kufanele zenziwe ngomshini ngemva kokufaka uthayela.Uchungechunge kufanele luhambisane nemithetho ye-YB 822.
(b) Izihlanganisi zamapayipi ensimbi kufanele zihambisane ne-YB 238;amalunga epayipi lensimbi elithambile elithambile kufanele ahambisane ne-YB 230.
4. Izakhiwo zikamshini Izakhiwo zokuwumshini zamapayipi ensimbi ngaphambi kokuvuthwa kufanele zihlangabezane nezidingo ze-GB 3091.
5. Ukufana kongqimba oluthathiwe Ipayipi lensimbi elakhiwe kufanele lihlolwe ukufana kongqimba oluvunyiwe.Isampula yepayipi yensimbi akufanele iphenduke ibe bomvu (i-copper-plated) ngemva kokucwiliswa kwisisombululo se-copper sulfate izikhathi ezi-5 ezilandelanayo.
6, Cold bend test ipayipi lashukumisa steel nge ububanzi okuzisholo hhayi ngaphezu 50mm kufanele kube abandayo bend test.I-engeli yokugoba ingu-90°, futhi i-radius egobayo iphinda izikhathi ezingu-8 ububanzi bangaphandle.Akukho ukugcwalisa ngesikhathi sokuhlolwa, futhi i-weld yesampula kufanele ibekwe ngaphandle noma engxenyeni engenhla yesiqondiso sokugoba.Ngemuva kokuhlolwa, akufanele kube nokuqhekeka nokuxebuka kwesendlalelo se-zinc kusampula.
I-7, Ukuhlolwa kwengcindezi yamanzi Ukuhlolwa kwengcindezi yamanzi kufanele kwenziwe ku-clarinet, futhi ukuhlolwa kwamanje kwe-eddy kungasetshenziswa esikhundleni sokuhlolwa kwengcindezi yamanzi.Ingcindezi yokuhlola noma usayizi wesampula yokuqhathanisa yokuhlolwa kwamanje kwe-eddy izohlangabezana nezidingo ze-GB 3092. Izici zokushintshwa kwensimbi ziyizinkomba ezibalulekile zokuqinisekisa ukusebenza kokugcina kokusetshenziswa (izakhiwo zemishini) yensimbi.
① Amandla e-Tensile (σb):Amandla amakhulu (Fb) isampula eliwathwalayo lapho ephuka phakathi nenqubo yokwelula, ahlukaniswe ingcindezi (σ) etholwe ngokuhlukanisa indawo yasekuqaleni ye-cross-sectional (So) yesampula, abizwa ngokuthi amandla e-Resistance Tensile (σb) , iyunithi ithi N/mm2 (MPa).Imele ikhono eliphezulu lensimbi yokumelana nokulimala ngaphansi kwamandla aqinile.Kufomula: Fb-amandla aphezulu isampula eliwathwalayo lapho liphulwa, N (Newton);I-So-indawo yokuqala ye-cross-sectional yesampula, mm2.
②Iphoyinti lokukhiqiza (σs):Okokusebenza kwensimbi okunomphumela wokukhiqiza, ingcindezi lapho isampula ingaqhubeka nokukhula ngaphandle kokukhulisa amandla phakathi nenqubo yokwelula ibizwa ngokuthi iphoyinti lokukhiqiza.Uma amandla ehla, amaphuzu okukhiqiza aphezulu naphansi kufanele ahlukaniswe.Iyunithi yephoyinti lesivuno ngu-N/mm2 (MPa).Iphuzu Lokuvuthela Eliphezulu (σsu): Ukucindezeleka okukhulu ngaphambi kokuba isifanekiso siveze futhi amandla ehla okokuqala;Iphoyinti Lesivuno Esiphansi (σsl): Ingcindezi encane esigabeni sokukhiqiza lapho umphumela wesikhashana wokuqala unganakwa.Kuphi: Fs--isivuno samandla (okuqhubekayo) phakathi nenqubo yokuqina yesampula, N (Newton) Ngakho--indawo yokuqala yesiqephu sesampula, mm2.
③ Ukukhula ngemva kokuphuka:(σ) Esivivinyweni sokuqina, iphesenti lobude begeji likhuphuke ngemva kokuba isampuli yephulwe ukuya kubude begeji yoqobo ibizwa ngokuthi i-elongation.Kuvezwe ngo-σ, iyunithi ithi %.Kufomula: L1-ubude begeji yesampula ngemva kokuphuka, ngo-mm;L0-ubude begeji yoqobo yesifanekiso, ngo-mm.
④ Ukuncishiswa kwendawo:(ψ) Ekuhlolweni kwe-tensile, iphesenti lokuncishiswa okuphezulu kwendawo ye-cross-sectional kububanzi obuncishisiwe besampula ngemva kokuba isampula yephulwe endaweni yokuqala ye-cross-sectional ibizwa ngokuthi ukuncishiswa kwendawo.Kuvezwe ngo-ψ, iyunithi ithi %.Kufomula: I-S0-indawo yokuqala yesiqephu sesampula, mm2;I-S1-indawo encane ehlukanisayo kububanzi obuncishisiwe besampula ngemva kokwephulwa, mm2.
⑤ Inkomba yokuqina:Ikhono lezinto zensimbi ukumelana nokungeniswa kwezinto eziqinile ebusweni kubizwa ngokuthi ubulukhuni.Ngokwezindlela ezihlukene zokuhlola kanye nobubanzi bokusebenza, ubulukhuni bungahlukaniswa ngokuqina kweBrinell, ukuqina kwe-Rockwell, ukuqina kwe-Vickers, ukuqina koShore, ubulukhuni obuncane kanye nobulukhuni bezinga lokushisa eliphezulu.Kunamapayipi amathathu asetshenziswa kakhulu: Brinell, Rockwell, Vickers hardness.
Ukuqina kwe-Brinell (HB):Sebenzisa ibhola lensimbi noma ibhola le-carbide elinobubanzi obuthile ukuze ulicindezele ebusweni besampula ngamandla okuhlola ashiwo (F), khipha amandla okuhlola ngemva kwesikhathi esibekiwe sokubamba, futhi ulinganise ububanzi bokuhlehlisa ebusweni isampula (L).Inani lobulukhuni be-Brinell yi-quotient etholwe ngokuhlukanisa amandla okuhlola ngendawo eyindilinga yendawo yokuhlehlisa.Ivezwe nge-HBS (ibhola lensimbi), iyunithi ithi N/mm2 (MPa).
