Chaw muag khoom loj caliber rectangular raj
Loj txoj kab uas hla square yeeb nkab, nrog hollow seem, yog dav siv raws li ib tug yeeb nkab rau conveying kua
Xws li cov kav xa mus rau kev thauj cov roj, roj av, roj, dej thiab qee yam khoom siv. Piv nrog cov khoom siv hlau xws li cov hlau puag ncig, cov yeeb nkab steel muaj tib yam dabtsi yog khoov thiab torsional lub zog thiab lub teeb yuag. Nws yog ib qho kev lag luam steel hlau. Nws yog dav siv nyob rau hauv kev tsim cov khoom siv thiab cov khoom siv kho tshuab, xws li roj laum yeeb nkab, tsheb sib kis ncej, tsheb kauj vab ncej thiab steel scaffold siv hauv kev tsim kho. Kev tsim cov nplhaib nrog cov kav hlau tuaj yeem txhim kho kev siv cov khoom siv, ua kom yooj yim ntawm cov txheej txheem tsim khoom, thiab txuag cov ntaub ntawv thiab cov sijhawm ua haujlwm, xws li dov bearing rings, Jack tes tsho, thiab lwm yam. steel kav tau siv dav rau kev tsim khoom. Cov yeeb nkab steel kuj yog ib qho khoom siv tsis tau rau txhua yam riam phom. Cov phom phom thiab lub thoob yuav tsum tau ua los ntawm cov yeeb nkab steel. Cov yeeb nkab steel tuaj yeem muab faib ua cov yeeb nkab puag ncig thiab cov yeeb nkab tshwj xeeb raws li qhov sib txawv ntawm qhov sib txawv thiab cov duab. Vim tias thaj chaw ncig yog qhov loj tshaj plaws nyob rau hauv qhov xwm txheej ntawm qhov sib npaug, cov kua dej ntau tuaj yeem thauj tau los ntawm cov yeeb nkab ncig. Tsis tas li ntawd, thaum lub nplhaib seem raug rau sab hauv lossis sab nraud radial siab, lub zog sib txawv ntau dua. Yog li ntawd, feem ntau cov kav hlau steel yog cov kav dej puag ncig. Txawm li cas los xij, cov yeeb nkab ncig kuj muaj qee yam kev txwv. Piv txwv li, nyob rau hauv cov xwm txheej ntawm lub dav hlau dabtsi yog khoov, lub zog dabtsi yog khoov ntawm lub voj voog yeeb nkab tsis muaj zog npaum li cov yeeb nkab square thiab cov duab plaub. Cov kav dej square thiab cov duab plaub feem ntau yog siv rau hauv lub moj khaum ntawm qee lub tshuab ua liaj ua teb thiab cov cuab yeej thiab cov rooj tog hlau thiab ntoo. Tshwj xeeb zoo li cov yeeb nkab steel nrog rau lwm cov duab seem kuj yuav tsum tau raws li cov hom phiaj sib txawv.
1. Loj txoj kab uas hla square raj rau cov qauv (GB / T8162-1999) yog ib txoj kab uas hla loj square raj rau cov qauv dav dav thiab cov qauv siv tshuab.
2. Loj txoj kab uas hla square raj rau kev thauj mus los kua (GB / t8163-1999) yog ib tug dav dav txoj kab uas hla square raj siv thauj dej, roj, roj thiab lwm yam kua.
3. Loj txoj kab uas hla square raj rau qis thiab nruab nrab siab boilers (GB3087-1999) yog high-zoo carbon structural steel kub dov thiab txias drawn (dov) loj txoj kab uas hla square raj rau manufacturing superheated chav raj, boiling dej raj rau qis thiab nruab nrab siab boilers ntawm ntau yam qauv thiab superheated chav tubes, cov pa luam yeeb loj, cov pa luam yeeb me me thiab cov arch cib hlab rau locomotive boilers.
4.Loj txoj kab uas hla square raj rau high-pressure boilers (GB5310-1995) yog cov zoo carbon steel, alloy steel thiab stainless kub-resistant steel loj-inch square raj siv los tsim cov cua kub ntawm cov dej raj boilers nrog siab siab thiab saum toj no. 5. Kev kub siab loj txoj kab uas hla square yeeb nkab (GB6479-2000) rau cov khoom siv tshuaj chiv yog cov khoom siv zoo carbon steel thiab alloy steel loj txoj kab uas hla square yeeb nkab haum rau cov khoom siv tshuaj thiab cov kav dej nrog kev ua haujlwm kub ntawm - 40 ~ 400 ℃ thiab ua haujlwm siab. 10 ~ 30mA
6. Loj txoj kab uas hla square raj rau roj av tawg (gb9948-88) yog cov kab loj loj square raj haum rau cov kav hlau, cov khoom siv hluav taws xob thiab cov kav dej hauv cov roj av refineries.
7. Cov yeeb nkab steel rau geological drilling (yb235-70) yog cov yeeb nkab steel siv los ntawm geological department rau core drilling. Raws li lub hom phiaj, nws tuaj yeem muab faib ua cov yeeb nkab laum, laum dab tshos, core yeeb nkab, casing thiab sedimentation yeeb nkab.
8. Loj txoj kab uas hla square raj (gb3423-82) rau pob zeb diamond tub ntxhais drilling yog ib tug loj txoj kab uas hla square raj rau laum yeeb nkab, tub ntxhais pas nrig thiab casing siv rau pob zeb diamond core drilling.
9.Roj drilling yeeb nkab (yb528-65) yog lub taub loj-inch square yeeb nkab siv rau sab hauv lossis sab nraud thickening ntawm ob qho kawg ntawm cov roj drilling. Cov yeeb nkab steel tau muab faib ua cov xaim xaim thiab tsis xaim xaim. Lub xaim xaim yeeb nkab txuas nrog qhov sib koom ua ke, thiab cov yeeb nkab tsis xaim xaim txuas nrog lub cuab yeej sib koom ua ke los ntawm pob tw vuam.
10.Marine carbon steel loj-inch square yeeb nkab (gb5213-85) yog cov pa roj carbon steel loj-inch square yeeb nkab rau kev tsim cov chav kawm I siab yeeb nkab, chav kawm II siab yeeb nkab system, boiler thiab superheater. Kev ua haujlwm kub ntawm cov pa roj carbon steel loj-inch square raj phab ntsa yuav tsum tsis pub tshaj 450 ℃, thiab kev ua haujlwm kub ntawm cov hlau loj-inch square raj phab ntsa yuav tsum tshaj 450 ℃.
11. Loj txoj kab uas hla square raj rau tsheb ib nrab qag lub tes tsho (gb3088-82) yog kub dov loj txoj kab uas hla square raj ua los ntawm high-zoo carbon structural steel thiab alloy structural steel rau tsheb ib nrab qag tes tsho thiab tsav qag vaj tse.
12. Cov kav dej kub siab rau lub cav diesel (gb3093-2002) yog qhov txias kos loj-inch square yeeb nkab rau kev tsim cov yeeb nkab siab ntawm diesel cav txhaj tshuaj.
13. Precision puab txoj kab uas hla loj square raj rau hydraulic thiab pneumatic lub tog raj kheej chim (GB8713-88) yog ib tug txias kos los yog txias dov precision loj txoj kab uas hla square raj nrog precision puab txoj kab uas hla rau manufacturing hydraulic thiab pneumatic lub tog raj kheej chim.
14.Cold drawn los yog txias dov precision loj txoj kab uas hla square raj (GB3639-2000) yog ib tug txias kos los yog txias dov precision loj txoj kab uas hla square raj nrog siab qhov tseeb thiab zoo nto tiav rau txhua yam qauv thiab hydraulic khoom. Kev xaiv precision loj-inch square raj los tsim cov qauv siv tshuab lossis cov khoom siv hydraulic tuaj yeem txuag tau ntau lub sijhawm ua haujlwm, txhim kho cov khoom siv thiab txhim kho cov khoom zoo.
15. Stainless hlau loj-inch square yeeb nkab rau cov qauv (GB / T14975-2002) yog ib tug kub dov (extruded, nthuav) thiab txias drawn (dov) loj-inch square yeeb nkab ua los ntawm stainless hlau rau corrosion-resistant kav, yam ntxwv thiab cov khoom siv dav siv hauv tshuaj, roj av, lub teeb textile, kev kho mob, zaub mov, tshuab thiab lwm yam lag luam.
16. Stainless hlau loj txoj kab uas hla square raj rau kev thauj mus los kua (GB / T14976-2002) yog ib tug kub dov (extruded, nthuav) thiab txias drawn (dov) loj txoj kab uas hla square raj ua los ntawm stainless hlau rau kev thauj mus los kua.
17.Tshwj xeeb zoo li tus loj-inch square raj yog lub npe dav dav ntawm txoj kab uas hla loj square raj nrog rau lwm seem duab tshwj tsis yog lub voj voog. Raws li cov duab sib txawv thiab qhov loj ntawm cov yeeb nkab steel, nws tuaj yeem muab faib ua cov yeeb nkab tshwj xeeb loj-inch square yeeb nkab uas muaj qhov sib npaug ntawm phab ntsa thickness (code D), tshwj xeeb-zoo li tus loj-inch square yeeb nkab nrog txawv phab ntsa thickness (code BD) thiab tshwj xeeb-zoo li tus seamless steel yeeb nkab nrog sib txawv txoj kab uas hla (code BJ). Tshwj xeeb zoo li tus loj-inch square raj yog dav siv nyob rau hauv ntau yam structural qhov chaw, cov cuab yeej thiab mechanical qhov chaw. Piv nrog cov yeeb nkab ncig, cov yeeb nkab tshwj xeeb feem ntau muaj lub sijhawm loj ntawm inertia thiab seem modulus, thiab muaj ntau dua dabtsi yog khoov thiab torsion tsis kam, uas tuaj yeem txo qhov hnyav ntawm cov qauv thiab txuag hlau.
Ntau yam tsis xws luag ntawm square tube yog tshwm sim los ntawm perforation, yog li cov txheej txheem xa hluav taws xob ntawm lub raj square yog cov txheej txheem tseem ceeb rau kev tsim cov raj square. Lub ntsiab nyuaj ntawm perforation ntawm high alloy yog nyob rau hauv qhov tsawg perforation kev ua tau zoo. Txhawm rau kom ntseeg tau tias qhov zoo, nws yog ib qho tsim nyog yuav tsum xaiv qhov tsis muaj deformation ntawm perforation. Cov compression me me yuav ua rau tsis muaj kev ruaj ntseg hauv cov txheej txheem perforation, yog li thaum qhov tseem ceeb compression me me, lub ntsaws yuav tsum nyob rau hauv pem hauv ntej, thiab compression feem ntau yog teem rau ntawm 7%, txwv tsis pub nws yuav tsis tom, los yog txawm nce lub zog los yog tau txais. daig pem hauv ntej. Qhov nce ntawm qhov compression nyob rau hauv pem hauv ntej ntawm lub plug yuav kuj tsim lub qhov kab noj hniav thiab dab ntxuav tes qhov tsis xws luag nyob rau hauv lub suab. Yog li ntawd, yog tias koj xav daws qhov teeb meem kev pabcuam rau cov neeg siv khoom, cov yeeb nkab khoob yuav tsum yog qhov nruab nrab, thiab qhov khoob qhov tob ntawm qhov chaw nruab nrab yuav tsum muab piv rau lwm cov qib steel. Yog li ntawd, lub tshuab cua sov yog qhov hluav taws xob kub thiab qhov yuav tsum tau ua kom muaj cua sov zoo. Qhov zoo ntawm cov cua sov yog nyob ntawm qhov ua haujlwm ntawm cov cua sov thiab cov cua sov. Ib qho me me ellipticity coefficient feem ntau yuav txhim kho qhov zoo ntawm capillary thiab txwv qhov kev hloov pauv hloov pauv. Txawm li cas los xij, lub ellipse coefficient me me dhau lawm, uas yuav ua rau muaj qhov nyuaj ntawm kev sib hloov ntawm dov, thiab tseem ua rau kev hnav ntawm daim ntawv qhia, uas yooj yim ua rau muaj qhov tsis xws luag ntawm qhov chaw. Yog li ntawd, kev hnav ntawm daim ntawv qhia yuav tsum tau kuaj xyuas thaum lub nkoj tab tom khi cov yeeb nkab square. Thaum pom nws, nws yuav tsum tau hloov tam sim ntawd. Lub degree ntawm ellipse yuav tsum tau tswj nyob rau hauv thaj tsam ntawm 1.07-1.08. Nws cuam tshuam rau kev ua haujlwm ib txwm ua ntawm cov txheej txheem tom ntej, nrog rau cov txheej txheem tseem ceeb ntawm cov cua sov square raj dawb paug, uas tseem muaj kev cuam tshuam zoo rau cov khoom tiav.
