Hlau yeeb nkab: hom thiab txoj kab uas hla

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Hlau kav yog cov khoom hollow ntawm cov hlau zoo. Cov khoom zoo li no tau pom daim ntawv thov dav hauv kev thauj mus los ntawm cov kua thiab roj, hauv kev tsim kho, kev siv tshuab engineering, kev tsim nkoj, thiab kev tsim khoom ntawm ntau yam khoom tiav. Nyob rau hauv catalogs ntawm manufacturers muaj ib tug loj tus naj npawb ntawm ntau yam ntawm cov yeeb nkab hlau, cov yam ntxwv uas ho cuam tshuam rau kev ua tau zoo ntawm tiav lug.

Cov yam ntxwv ntawm cov kav dej

Qhov ntau ntawm cov kav hlau yog qhov loj heev thiab suav nrog ntau ntau yam khoom sib txawv. Kev lig kev cai, cov khoom siv hlau dov yog qhov txawv ntawm cov ntsuas hauv qab no:

• ntu hom - nws tuaj yeem hloov pauv thiab profile;
• txoj kev tsim khoom - raws li qhov tshwj xeeb no, cov khoom lag luam yog welded thiab seamless;
• hom hlau - cov khoom siv rau kev tsim cov khoom siv hlau uas cuam tshuam rau lub neej kev pabcuam, lub zog thiab lwm yam ntsuas;
• txoj kab uas hla - nws cuam tshuam qhov loj thiab dhau ntawm cov kav dej;
• phab ntsa thickness - cuam tshuam lub zog thiab qhov hnyav ntawm cov qauv;
• muaj txheej txheej ntxiv (galvanized thiab tsis-galvanized).

Section type

Ntau tshajIb qho kev xaiv zoo tshaj plaws yog suav tias yog cov yeeb nkab puag ncig, uas yog siv yuav luag txhua qhov chaw: tso cov kav dej, cov kav dej phwj tuaj, cov kav dej, qhov cua, qhov chaw tsim kho, cov khoom siv sib dhos, kev lag luam tsheb.

Tsawg dua hauv kev thov, tab sis tseem ceeb heev, yog cov kav dej square thiab plaub fab. Lawv cov yam ntxwv tseem ceeb yog lub zog flexural thiab tsis hnyav. Qhov no ua rau nws muaj peev xwm siv cov khoom zoo li no hauv kev tsim kho es tsis txhob hnyav cam khwb cia.

Tsis tshua siv cov kev xaiv nrog lub oval thiab arched profile. Lawv yooj yim heev rau siv yog tias muaj qhov tsis txaus, vim tias qhov kev tawm ntawm cov yeeb nkab tseem zoo.

Txoj Kev Ua Haujlwm

Thaum xaiv cov yeeb nkab, nws yog ib qho tseem ceeb uas yuav tsum xav txog seb nws ua li cas.

Cov khoom siv seamless yog cov yeeb nkab hlau txhim khu kev qha uas tuaj yeem tiv taus siab. Nws qhov txawv feature yog qhov tsis muaj welded seam. Nws yog tsim nyob rau hauv ob txoj kev.

• Los ntawm cov cam khwb cia tshwj xeeb (lawv tseem hu ua ingots). Nyob rau hauv chav kawm ntawm kev tsim khoom, qhov khoob yog rhuab mus rau qhov kub thiab txias (drilled, drilled, dov, calibrated).
• Casting method. Hauv qhov no, ib daim ntawv tshwj xeeb yog siv nrog tus pas nrig hauv nruab nrab. Molten hlau yog nchuav rau hauv pwm thiab tso cai rau txias. Raws li qhov tshwm sim ntawm qhov kev ua, dov hlau ntawm qhov xav tau tuab thiab txoj kab uas hla.

welded yeeb nkab yog lwm txoj kev xaiv. Kawm qhov nocov khoom siv hlau tuaj yeem ua tsis tau zoo - welded seam stretches raws phab ntsa rau tag nrho qhov ntev ntawm cov khoom. Cov kav dej zoo li no yog tsim los ntawm cov ntaub ntawv ntawm qhov xav tau tuab. Ua ntej, cov nplooj ntawv raug txiav (muab qhov xav tau ntev thiab dav). Tom qab ntawd, ib daim hlau yog dov tawm ntawm cov cav tov thiab muab qhov xav tau profile thiab txoj kab uas hla. Indirect stitch xaiv kuj muaj.

Lub zog ntawm cov khoom zoo li no me ntsis qis, txawm li cas los xij, tus nqi yog kev ywj pheej heev. Nyob rau tib lub sijhawm, cov neeg siv khoom tsis tuaj yeem txhawj xeeb txog kev ntseeg siab ntawm cov khoom tiav. Tom qab kev tsim khoom thiab vuam, cov kav dej thiab cov seam raug kuaj kom muaj zog.

Tim steel

Rau kev tsim cov hlau dov, ntau hom hlau siv, uas txawv ntawm cov tshuaj muaj pes tsawg leeg thiab cov yam ntxwv ntawm lub cev: yield zog thiab lub zog, hardness thiab cuam tshuam lub zog. Muaj cov nram qab no hom steel.

• Kev tsim kho carbon. Cov khoom no suav nrog steels 10, 15, 20, 08 thiab St3-6sp. Lawv yog siv los tso cov kav dej siab, nrog rau cov kav dej, cov cua sov thiab cov cua sov.



• Tsawg alloy thiab alloy steels. Ntawm lawv yog 17GS, 10G2, 15XM, 09G2S, 12X1MF thiab lwm yam. Cov peev txheej ntawm lawv cov kev siv yog kev teeb tsa ntawm cov roj thiab cov kav dej loj, cov kav dej rau hydrogen sulfide-muaj thiab corrosive ib puag ncig.
• Alloyed stainless kub-resistant thiab corrosion-resistant steels. Cov npe ntawm cov hlau no suav nrog 12X18H12T, 08X18H10T, 03X18H11, 12X18H10T thiab 08X18H12T. Cov hlau dov zoo li no tuaj yeem siv rau hauv qhov chaw muaj kev phom sij txaus ntshai thiab qhov kub thiab txias.

kab ntawm cov kav hlau puag ncig

Cov neeg tsim khoom ntawm cov khoom siv hlau yob muaj ntau yam khoom sib txawv ntawm txoj kab uas hla thiab phab ntsa tuab. Muaj cov qauv tshwj xeeb rau txhua hom yeeb nkab.

Txoj kab uas hla ntawm cov kav hlau puag ncig yuav txawv nyob ntawm txoj kev tsim khoom.

Cov kav dej thiab roj yog lwm yam. Sab nraud txoj kab uas hla ntawm cov khoom no txawv ntawm 25 hli mus rau 550 hli. Lawv raug tsim los ntawm txoj kev kub-dov yam tsis muaj vuam (dov thiab deformation tom qab cua sov) thiab tuaj yeem ua tuab-walled lossis nyias-walled.

Nto welded cov khoom muaj cov qauv sib txawv me ntsis. Lawv txoj kab uas hla sab nraud tuaj yeem ncav cuag 8 txog 1620 mm.

Dimensions of profile pipes

Yog tias peb tham txog cov kav hlau square, ces ob sab ntawm 1010 mm yog suav tias yog qhov me tshaj plaws, cov yeeb nkab profile nrog qhov ntev ntawm 180180 mm yog suav tias yog qhov loj tshaj plaws. Phab ntsa thickness kuj txawv ntawm 0.8 hli mus rau 14 hli. Qhov zoo ntawm cov khoom tsim tau meej meej tswj los ntawm GOST 8639-82.

Rau cov kav hlau hlau uas muaj lub voj voos, qhov tsis sib xws thiab qhov ntev sib txawv me ntsis. Qhov sib txawv ntawm cov yeeb nkab me me yog 1510 mm, qhov loj tshaj plaws - 180150 mm. Hauv qhov no, phab ntsa tuaj yeem yog los ntawm 0.8 mus rau 12 hli hauv thickness. Qhov zoo ntawm cov khoom siv hlau no yog tswj los ntawm GOST 8645-68.

Galvanized thiab tsis-galvanized nto

Cov kav hlau yog feem ntau tsim nrog txheej txheej galvanized. Nws txhais li cas? Thaum lub sij hawm tsim khoom, qee cov khoom siv hlau dov yog coated rau sab saum toj nrog zinc tov, uas ua rau nyias zaj duab xis rau saum npoo. Xws li txheej tiv thaiv cov hlau los ntawm kev sib cuag cov kua, uas txhais tau hais tias nws muaj kev tiv thaiv corrosion.

Cov khoom tiav los ntawm cov khoom zoo li no yuav siv sijhawm ntev dua li cov kav hlau ua ke.

Thaum xaiv cov kav dej rau ib txoj haujlwm tshwj xeeb, tus lej ntawm cov yam ntxwv yuav tsum raug coj mus rau hauv tus account. Nrog rau qhov ntev ntawm cov kav hlau, lawv cov thickness thiab hom hlau. Cov ntsuas no ncaj qha cuam tshuam rau tus nqi kawg ntawm kev ua haujlwm thiab lub neej ntawm qhov chaw. Hauv lwm lo lus, los ntawm kev ua tib zoo mus txog qhov kev xaiv ntawm cov dov hlau, koj tuaj yeem txo tus nqi ntawm cov khoom yam tsis muaj kev cuam tshuam zoo.