Izakhiwo zemishini ye
(1) Amandla okuqina (σb) :amandla amakhulu (Fb) wesampula ngesikhathi sokuphuka okuqinile ahlukaniswa ukucindezelwa (σ) kwendawo yasekuqaleni ye-cross-sectional (So) yesampula.Iyunithi yamandla e-tensile (σb) ingu-N/mm2(MPa).Imele umthamo omkhulu wezinto zensimbi ukumelana nomonakalo ngaphansi kwengcindezi.Lapho: Fb-- amandla amakhulu athwalwa yisifanekiso lapho siphuka, N (Newton);So-- Indawo enqamulayo yoqobo yesampula, mm2.
(2) Iphoyinti lokukhiqiza (σ S) :iphuzu lokukhiqiza lensimbi enento yokukhiqiza.Ukucindezeleka lapho isifanekiso singaqhubeka sinwebeka ngaphandle kokwandisa amandla (ukugcina njalo) phakathi nenqubo yokuqina.Uma kwenzeka ukwehla kwamandla, amaphuzu esivuno aphezulu naphansi kufanele ahlukaniswe.Iyunithi yephoyinti lesivuno ngu-NF/mm2(MPa).Iphoyinti lokukhiqiza eliphezulu (σ SU) ingcindezi enkulu ngaphambi kokuba isifanekiso siveze futhi amandla ehle okokuqala ngqa.Iphoyinti lesivuno esiphansi (σ SL) : ukucindezeleka okuncane esigabeni sokukhiqiza lapho umphumela wokuqala wesikhashana ungacatshangwa.Lapho u-Fs engamandla okukhipha (okungashintshi) wesampula phakathi nenqubo yokuqina, i-N (Newton) Kanjalo nendawo yasekuqaleni enqamula ingxenye yesifanekiso, mm2.
(3) Ubude ngemva kokuphuka :(σ)ekuhlolweni okuqinile, ubude iphesenti lobude obunyuswe ngebanga elijwayelekile lesampula ngemva kokuphuka uma kuqhathaniswa nobude bebanga elijwayelekile langempela.Iyunithi ingu-%.Kuphi: L1-- ibanga lesampula ngemva kokuphuka, mm;L0-- Ubude bangempela bebanga lesampula, mm.
(4) Ukwehliswa kwesigaba :(ψ)ekuhlolweni okuqinile, iphesenti lokuncishiswa okuphezulu kwendawo ephambanayo kububanzi obuncishisiwe besampula ngemva kokudonswa kanye nendawo yokuqala ephambanayo ibizwa ngokuthi ukuncishiswa kwesigaba.ψ uvezwa ngo-%.Lapho, S0-- indawo yokuqala enqamulayo yesampula, mm2;S1-- Ubuncane bendawo ephambanayo kububanzi obuncishisiwe besampula ngemva kokuphuka, mm2.
(5) Inkomba yokuqina:ikhono lezinto zensimbi ukumelana nezinto eziqinile zokuhlehlisa phezulu, okwaziwa ngokuthi ubulukhuni.Ngokwendlela yokuhlola kanye nobubanzi bokusebenza, ubulukhuni bungahlukaniswa ngokuqina kwe-Brinell, ukuqina kwe-Rockwell, ukuqina kwe-Vickers, ukuqina koShore, ukuqina okuncane kanye nobulukhuni bezinga lokushisa eliphezulu.Okuvamise ukusetshenziselwa ukwenza amapayipi anezinhlobo ezi-3 ze-brinell, rockwell, Vickers hardness.
(6) Ukuqina kwe-Brinell (HB):enobubanzi obuthile bebhola lensimbi noma ibhola lengxubevange eqinile, ngamandla okuhlola ashiwo (F) acindezelwe endaweni yesampula, ngemva kwesikhathi esishiwo sokubamba ukuze kukhishwe amandla okuhlola, ukukalwa kobubanzi besampula bokuhlehlisa ebusweni (L).Inombolo yobulukhuni be-Brinell iyi-quotient yamandla okuhlola ahlukaniswe indawo engaphezulu ye-indentation sphere.Ivezwe nge-HBS, iyunithi ithi N/mm2(MPa).
Izici Mechanical of lashukumisa steel pipe，Ukusebenza umthelela
(1) Ikhabhoni;Ukuphakama kwekhabhoni, insimbi iqina, kodwa ipulasitiki kanye ne-ductile encane.
(2) Isibabule;Ingabe imfucumfucu eyingozi ensimbi, insimbi enesulfure ephakeme ekucubungulweni kwengcindezi yokushisa ephezulu, kulula ukuqhekeka, ngokuvamile okubizwa ngokuthi i-hot brittleness.
(3) I-Phosphorus;Inganciphisa kakhulu ipulasitiki nokuqina kwensimbi, ikakhulukazi ekushiseni okuphansi, okubucayi kakhulu, futhi lesi simo sibizwa ngokuthi i-cold brittleness.Ensimbi yekhwalithi ephezulu, isulfure ne-phosphorus kufanele ilawulwe ngokuqinile.Kodwa ngakolunye uhlangothi, insimbi ephansi ye-carbon iqukethe isibabule ne-phosphorus ephakeme, ingenza ukusika kwayo kube lula ukuphuka, ukuthuthukisa ukusebenza kwensimbi kuyathandeka.
(4) IManganese;Ingakwazi ukuthuthukisa amandla ensimbi, ingenza buthaka futhi iqede imiphumela emibi yesibabule, futhi ingathuthukisa ukuqina kwensimbi, insimbi ephezulu ye-alloy enokuqukethwe okuphezulu kwe-manganese (insimbi ephezulu ye-manganese) inokumelana okuhle kokugqoka nezinye izinto ezibonakalayo.
(5) I-silicone;Ingathuthukisa ubulukhuni bensimbi, kodwa ipulasitiki nokuqina kuncipha, insimbi kagesi iqukethe inani elithile le-silicon, ingathuthukisa izakhiwo ezithambile zikazibuthe.
(6) I-Tungsten;Ingakwazi ukuthuthukisa ubulukhuni obomvu, amandla okushisa nokugqoka ukumelana kwensimbi.
(7) I-Chromium;Ingathuthukisa ukuqina nokumelana nokugqoka kwensimbi, ithuthukise ukumelana nokugqwala nokumelana ne-oxidation yensimbi.
(8) Zinc;Ukuze kuthuthukiswe ukumelana nokugqwala, ipayipi lensimbi elijwayelekile (ipayipi elimnyama) liyakhanyiswa.Ipayipi lensimbi elikhangayo lihlukaniswe ngezinhlobo ezimbili zensimbi eshisayo yediphu kanye nensimbi kagesi zinc, idiphu elishisayo eliphehla ungqimba oluwugqinsi, izindleko zikagesi zikagesi ziphansi, ngakho-ke kukhona ipayipi lensimbi.
Izici Mechanical of lashukumisa ipayipi lensimbi，Indlela yokuhlanza
1. ukusetshenziswa kokuqala kwensimbi yokuhlanza i-solvent, ingaphezulu lokususwa kwezinto eziphilayo,
2. bese usebenzisa amathuluzi ukususa ukugqwala (ibhulashi locingo), susa isikali esixegayo noma esitshekile, ukugqwala, i-welding slag, njll.,
3. ukusetshenziswa pickling.
I-galvanized ihlukaniswe ibe i-hot plating kanye ne-plating ebandayo, i-hot plating akulula ukugqwala, ukugqwala okubandayo kulula ukugqwala.
Izakhiwo zemishini yepayipi lensimbi elinamandla，Ukuxhumana kumodi yokuginqa ye-groove
(1) Ukuqhekeka kwe-groove weld
1, ipayipi emlonyeni ingcindezi groove ingxenye engaphakathi odongeni welding bar ukugaya bushelelezi, ukunciphisa inkatho rolling ukumelana.
2. Lungisa i-axis yepayipi lensimbi kanye nempahla yokugingqa i-groove, futhi udinga izinga lepayipi lensimbi kanye nempahla yokugingqa inkatho.
3, lungisa isivinini sethangi lokucindezela, isikhathi sokubumba sethangi lokucindezela asikwazi ukudlula izinhlinzeko, umfaniswano kanye namandla ahamba kancane.
(2) Ukuphuka kwepayipi lensimbi eliginqikayo
1. Hlelisa izimbambo zokushisela odongeni lwangaphakathi lomsele wokucindezela emlonyeni wepayipi lensimbi ukuze unciphise ukumelana kokugingqika komsele.
2. Lungisa i-axis yepayipi lensimbi kanye nempahla yokugingqa i-groove, futhi udinga izinga lepayipi lensimbi kanye nempahla yokugingqa inkatho.
I-3, lungisa isivinini sethangi lokucindezela, ijubane lethangi lokucindezela alikwazi ukudlula izinhlinzeko, umfaniswano kanye namandla angasheshi.
4. Hlola ububanzi nohlobo lwerola elisekelayo kanye ne-pressure roller ye-groove imishini ukuze ubone ukuthi ama-roller amabili awahambelani ngosayizi futhi abangela ukwenzeka kwe-occlusal.
5. Hlola ukuthi i-groove yepayipi yensimbi icaciswe nge-vernier caliper.
(3) Umshini wokubumba we-Groove rolling kufanele uhlangabezane nezidingo ezilandelayo
1. Ingaphezulu ukusuka ekugcineni kwepayipi ukuya emgodini kufanele libe bushelelezi futhi lingabi nama-concave-convex kanye nezimpawu zokugoqa.
2. Isikhungo se-groove kufanele sigxile ngodonga lwamapayipi, ububanzi nokujula kwe-groove kufanele kuhlangabezane nezidingo, futhi uhlole ukuthi uhlobo lwe-clamp lulungile.
3. Gcoba okokuthambisa iringi yokuvala irabha bese uhlola ukuthi iringi yokuvala irabha yonakele yini.I-lubricant kawoyela akufanele isetshenziselwe okokugcoba.
Isikhathi sokuthumela: May-23-2022