Rolled steel: hom, GOST, nqi

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

Steel dov yog hais txog ib hom kev ua haujlwm xws li cov ntawv hlau, qhov no yog ib yam ntawm cov khoom siv hlau uas tsim los ntawm cov chaw tsim khoom. Cov khoom tau txais nyob rau hauv cov txheej txheem ntawm xws li kev ua yog dav siv nyob rau hauv kev lag luam, raws li zoo raws li tsim ib tug ntau yam ntawm cov hlau lug. Nws kuj tseem tuaj yeem tsim ntau yam profiles. Hom dov hlau, ua raws li txoj kev no, tuaj yeem ua tau kub-kuav los yog txias-dov.

Kev piav qhia ntawm thawj hom ntawv kub dov

Cov ntawv kub dov yog cov khoom ntawm cov hlau dov, uas tau txais los ntawm cov txheej txheem kub dov ntawm cov hlau hauv lub tshuab dov. Nws tseem yog ib qho tsim nyog los ua cov kev kho cua sov tom ntej. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov ntawm no tias cov khoom tau txais tau muab faib ua ob peb hom:

Thawj hom yog daim ntawv kub dov steel GOST 16523-89 nyias daim ntawv. Lub thickness ntawm cov tau txais blanks tsis ntau tshaj 3.9 hli. Yog hais tias lub thickness tsis tshaj 1.2 hli, qhov kev tso tawm yog ua tsis nyob rau hauv los xij, tab sis nyob rau hauv yob. Ib qho kev txiav ntug kuj yuav tsum tau, lub thickness ntawm uas yuav tsum tsis txhob ntau tshaj 0.4 hli. Tsis tas li ntawd, cov ntaub ntawv cov khoom lag luam kuj tuaj yeem tsim tau, muaj pickled lossiskev kho tsis tau saum npoo

thib ob yam khoom

Yog tias peb tham txog yam khoom thib ob, ces qhov no yog cov ntawv kub dov hlau GOST 19903-74 tuab phaj. Cov khoom no suav nrog cov ntawv uas nws thickness pib ntawm 4 hli thiab xaus nrog 160 hli. Kev tso tawm hauv cov ntawv yog nqa tawm yog tias lub thickness ntawm 0.4 hli mus rau 160 hli. Kev tso tawm hauv yob tshwm sim yog tias lub thickness yog los ntawm 1.2 hli mus rau 12 hli. Nws tseem tsim nyog sau cia ntawm no tias muaj ob lub xeev - kub dov thiab tawv.

Nyob steel by composition

Lwm qhov kev faib ua hom dov hlau yog nws lub hom phiaj thiab muaj pes tsawg leeg. Thawj qeb yog qis alloy kub dov los xij. Cov qeb thib ob yog cov qauv kub dov los xij.

Yog tias peb tham txog thawj hom, nws yog ib qho uas tsis tshua muaj cov khoom siv raw khoom siv rau kev tsim khoom thiab dov. Cov khoom tau txais los ntawm txoj kev no feem ntau yog siv rau hauv cov chaw xws li kev lag luam, kev tsim kho, thiab kev tsim cov hlau welded rau ntau lub hom phiaj. Vim lub fact tias cov nqi ntawm xws li ib tug dov steel khoom yog heev tsawg, raws li zoo raws li nws cov zoo, tsawg-alloy nplooj ntawv yog siv raws li raw cov ntaub ntawv rau zus tau tej cov tsis tseem ceeb qhov chaw nyob rau hauv lub teeb thiab hnyav industries.

Yog tias peb tham txog cov khoom siv raw khoom, ces nws yog qhov txawv ntawm thawj qeb. Cov ntsiab lus carbon siab thiab siab alloy cov ntsiab lus ntawm cov khoom coj mus rau qhov tseeb tias nws cov nqiyog qhov siab heev, thiab nws yog siv los ua cov khoom siv hlau tseem ceeb tshaj plaws. Yog tias peb xav txog qhov zoo ntawm cov qib ntawm cov ntawv hlau, peb tuaj yeem hais txog cov ntsiab lus hauv qab no:

• khoom ntau yam muaj ntau yam;
• hlau weldability yog siab heev;
• siab corrosion thiab thermal kuj;
• kev ua tau zoo kuj siab;
• qhov zoo ntawm cov hlau txheej yog qhov siab heev, thiab qhov tseem ceeb tshaj plaws, tus nqi-zoo piv yog ib qho zoo tshaj plaws;
• khoom siv yog qhov yooj yim heev, tab sis muaj kev tiv thaiv siab rau cov neeg kho tshuab kev nyuaj siab.

piav qhia dav dav ntawm cov ntawv txias txias

Cov khoom siv raw no kuj tau los ntawm dov ductile steel ntawm lub tshuab dov, tab sis twb yog hom txias. Qhov tshwm sim ntawm dov cov hlau hauv txoj kev no yog cov khoom lag luam zoo nrog cov txheej txheem siab tshaj plaws. Lub thickness ntawm cov khoom siv raw yuav txawv ntawm 3.35mm mus rau 5mm. Dab tsi yog qhov tseem ceeb, qhov hardness ntawm cov khoom kuj tuaj yeem sib txawv. Vim lub fact tias cov khoom dov yog hom txias, nws muaj peev xwm paub qhov txawv qhov zoo ntawm cov khoom kawg li:

• zoo hlau sab saum toj txheej;
• siab tsis kam rau vuam deformation thiab tag nrho kev ua haujlwm;
• Yuav kom siv cov ntaub ntawv xim rau saum npoo ntawm daim ntawv, tsis tas yuav tsum tau ua ntxiv.

Cov khoom siv dav dav tshaj plaws tau txais hauvkev lag luam. Lawv tsim cov khoom xws li: perforated thiab vov tsev ntawv galvanized, nrog rau corrugated board. Txias dov yog qhov zoo tshaj plaws rau kev tsim cov khoom siv uas yav tom ntej yuav tsum muaj kev ua haujlwm siab, uas tshwm sim los ntawm qhov tseeb tias muaj kev tiv thaiv siab rau deformation nyob rau hauv kev cuam tshuam ntawm lub tshuab vuam.

Thin sheet khoom

Raws li tau hais ua ntej, cov ntawv nyias nyias tau txais los ntawm kev kub lossis txias dov. Txhua yam kev cai uas cov ntaub ntawv no yuav tsum tau ua raws li tau teev tseg hauv lub xeev daim ntawv No. 16523-97. Yog tias cov khoom siv raw yog tsim los ntawm txoj kev txias, ces nws cov thickness yuav tsum nyob rau hauv thaj tsam ntawm 0.4 hli mus rau 4 hli. Qhov ntev ntawm cov khoom tiav yog mus txog 3.5 m lossis ntau dua. Yog siv kub dov, ces lub thickness ntawm cov khoom tiav yuav tsum yog los ntawm 0.4 mus rau 5 hli, thiab qhov siab tshaj plaws ntev yuav tsum mus txog 4 m. Qhov dav ntawm daim ntawv nyias nyias steel yuav tsum nyob rau hauv thaj tsam ntawm 600 mus rau 1400 mm..

Yuav ua li cas daim ntawv dov

Tam sim no, cov txheej txheem stainless hlau dov yog ua los ntawm dov slabs. Lub slab yog ib lub pob zeb steel uas muaj qhov zoo li ntawm parallelepiped, thiab qhov ntev ntawm nws cov tav yog nyob rau hauv thaj tsam ntawm 5 mus rau 12 m. Cov khoom siv raw ntawm cov khoom siv stainless hlau no yuav tsum tau dhau los ntawm cov yob ob peb zaug kom muab nws qhov loj me thiab puab. Cov kauj ruam tom ntej yog kho cov ntawv uas twb tau dov lawm. Rau qhov no muaj ib tug roller unit. Cov theem kawg ntawm kev tsim cov khoom zoo li no yog kev ua cov npoo, thiabtxiav rau hauv qhov khoob ntawm qhov xav tau loj. Nws yog ib qho tsim nyog ntxiv ntawm no tias yog siv cov hlau kub kub, uas yog, ua ntej pib ua cov khoom siv raw, nws tau muab tso rau hauv lub qhov cub, tom qab cov txheej txheem ntawm edging thiab txiav, nws yog ib qho tsim nyog yuav tsum tau ua cov ntawv ua kom txias..

Material Composition

Lwm yam khoom tseem ceeb yog cov khoom sib txawv uas siv los tsim cov hlau tsis muaj hlau. Cov khoom siv dav dav tso cai rau koj kom muaj txiaj ntsig zoo rau kev xaiv ntawm cov khoom kawg, qhov sib txawv tseem ceeb ntawm cov lus dag hauv lub cev thiab tshuaj lom neeg ntawm cov hlau. Piv txwv li, martensitic thiab martensitic-ferritic alloys tau txais qhov nrov tshaj plaws hauv kev lag luam khoom noj. Qhov no yog vim lub fact tias lawv tsis kam mus corrosion yog ib qho ntawm qhov siab tshaj plaws. Lwm qhov piv txwv yog kev siv cov austenitic alloys los tsim cov khoom siv thiab hnav cov khoom tiv taus. Cov ntsiab lus no tau siv dav hauv kev siv tshuab engineering lossis tshuab cuab yeej lub tsev.

Yog tias peb tham txog cov nqi khoom, ces, tau kawg, txhua yam nyob ntawm qhov tuab thiab txoj kev tsim khoom. Piv txwv li, tus nqi txias-kuav los tiag steel qib 65G nrog lub thickness ntawm 1.2 hli yuav sib npaug rau 94,000 rubles ib tuj.