### 1. Dab tsi yog qhov sib txawv ntawm A36 thiab Q235 steel?
A36 (USA / ASTM txuj ci) thiab Q235 (Tuam Txhab / GB tus qauv hlau nrog cov khoom siv zoo sib xws thiab feem ntau yog kev ua haujlwm dav.
Qhov sib txawv tseem ceeb yog:
* ** Tus qauv tshuaj thiab tshuaj yeeb yam: ** A36 muaj cov ntsiab lus ntawm cov roj carbon ntau tab sis kuj muaj qhov tsawg kawg nkaus rau tooj liab (0.20% min) rau cov atmospheric corrosion. Q235 tshuaj yuav tsum muaj tshuaj lom neeg raws li nws qib (A, B, C, D), uas feem ntau sib txawv ntawm cov kub kub. Txoj kev deoxidization (uas cuam tshuam weldability thiab soundness) tseem teev nyob rau hauv Q235 qib (piv txwv li F rau cov hlau rimmed, z rau tua cov hlau).
* ** PAUB LUB ZOG: ** RAU LAXES: ** RAU LAARES THIAB COV LUS, A36 muaj ib qho kev xaiv tsa lub zog ntawm 36 (≈250 MPA). Rau cov phaj, cov txiaj ntsig lub zog yog 36 ksi rau daim hlau kom txog 8 nti tuab, tab sis nws tuaj yeem muaj tsawg li 32 ksi (≈220 mpa) rau cov phiaj thicker. Q235 muaj ib qho kev tawm tsam lub zog ntawm 235 MPa (≈34 ksi) rau cov ntu, daim hlau, thiab tuav kom txog 16 hli tuab. Rau cov ntaub ntawv tuab, cov txiaj ntsig muaj zog yuav tsum muaj tsawg.
* ** TESTING: ** A36 feem ntau siv Tensile sim ua qhov kev xeem tseem ceeb. Rau Q235, BENS qhov kev xeem yog qhov kev ntsuam xyuas kev lees paub ntau dua.
Hauv cov ntsiab lus, thaum lawv cov qib muaj zog yog ze rau cov thicknesses, qhov sib txawv tseem ceeb nyob hauv cov tshuaj sib xyaw tshwj xeeb thiab cov qauv txheem lawv zwm rau.
### 2. Yuav ua li cas tuab yog Q235 steel?
Q235 steel yog tsis yog ib leeg tuab xwb. Nws yog cov khoom siv uas tsim tawm hauv ntau hom tuab thiab cov ntaub kom tau raws li cov kev xav tau sib txawv. Koj tuaj yeem nrhiav Q235 steel hauv:
* ** Daim hlau / ntawv txheeb: ** Los ntawm heev nyias ntawv (piv txwv li, 1 hli lossis 0.04 ntiv tes (dhau 200 hli lossis 8 ntiv tes).
* ** TSHWJ XEEB: ** xws li cov ces kaum, raws, Kuv {{{} ci ci, thiab rebar, uas muaj lawv tus qauv tshwj xeeb.
* ** Cov kab tuav: ** Round tuav, cov xwm txheej, thiab cov kab tuav hauv ntau qhov diameters thiab tuab.
Yog li ntawd, cov tuab nyob ntawm cov khoom lag luam thiab cov chaw tsim khoom siv lub peev xwm. Koj yuav tsum teev cov kev xav tau tuab thaum xaj Q235 hlau.
### 3. Dab tsi yog qhov sib txawv ntawm Q235 thiab Q345B?
Q235 thiab Q345B yog ob qho tib si suav cov qauv hlau, tab sis Q345B yog qhov siab dua- lub zog qib.
* ** Lub zog: ** Qhov no yog thawj qhov sib txawv. Qhov "235" hauv Q235 qhia tau tias yog ** paib lub zog ntawm 235 mpa **. Qhov "345" hauv Q345B qhia tau ib qho ** paib lub zog ntawm 345 mpa **. Qhov no ua rau Q345B txog 47% muaj zog dua Q235.
* ** QUANITION & ZOO: ** Q345 yog qhov siab - lub zog qis {}} alloy (hsla) steel. Nws muaj cov ntsiab lus ntxiv xws li manganese (mn) ntau dua, thiab tseem tuaj yeem muaj vatadium (v), niobium (nb), thiab titanium (ti) kom ua tiav nws lub zog siab dua. Tus "B" hauv Q345B txhais tau tias yog qib tshwj xeeb uas tau lees tias cuam tshuam kev cuam tshuam nyuaj ntawm 20 degree.
* ** DAIM NTAWV THOV: ** Vim nws lub zog siab dua, Q345B tso cai rau kev tsim cov qauv sib zog dua thiab muaj zog dua. Nws yog feem ntau siv nyob rau hauv ntau daim ntawv thov tau zoo li choj, hnyav {{{{{{}, hos q235 yog siv rau kev tsim kho dav dav, thav duab, thiab qhov tsis tshua tseem ceeb.
### 4. Cov khoom siv yog dab tsi Q235?
Cov khoom siv cov khoom "Q235" yog qhov tsim qauv los ntawm Suav txheej txheem GB / T 700.
* ** Q: ** Sawv ntsug rau "QuE", yog Suav tus cwj pwm rau cov txiaj ntsig (tawm lub zog).
* ** ** 235: ** sawv cev rau tus ** Tsawg kawg cov txiaj ntsig muaj zog dua **
Yog li, Q235 cia txhais tau tias "hlau nrog ib qho txiaj ntsig muaj zog ntawm 235 MPa." Nws yog General - hom phiaj carbon qauv hlau, zoo ib yam li AHTM A36 hauv Asmeskas lossis S235JR hauv Tebchaws Europe.
### 5. Dab tsi yog qhov txawv ntawm Q235 thiab 20?
Q235 thiab "20" Hlau (lossis 20 # steel) yog qhov sib txawv hauv lawv cov kev faib tawm thiab kev siv thawj zaug.
* ** Q235 ** yog ib qho ** cov hlau ua hlau **. Nws cov khoom tseem ceeb tshaj plaws yog nws ** cov khoom siv mechanical ** (tawm lub zog, tensile lub zog). Nws cov tshuaj lom neeg muaj pes tsawg leeg yog tswj hwm kom ua tiav cov khoom siv neeg kho tshuab no tus nqi- zoo. Nws yog siv rau kev tsim cov thav ntawv, kev tsim kho, thiab cov kev siv dav dav.
* ** NTXIV 20 # steel ** yog ** cov roj carbon zoo hlau ** lossis ** carbon steel rau cov neeg kho tshuab cov txheej txheem **. Nws cov yam ntxwv tseem ceeb tshaj plaws yog nws meej meej ** tshuaj lom neeg muaj pes tsawg leeg **. Tus "20" qhia tau qhov nruab nrab ** cov ntsiab lus carbon ntawm 0.20% **. Nws yog tsim rau cov seem uas yuav kub -}} kho (zoo li carburizing lossis quenching) lossis machined. Nws yog siv rau kev ua cov tshuab tshuab xws li lub zog, shafts, thiab sib txuas cov pas nrig uas muaj zog dua kev kho kom zoo nkauj thiab muaj zog tom qab kev kho cua sov yog qhov tseem ceeb.
Hauv ntej: ** Q235 yog rau cov qauv (zoo li lub tsev ua ke), thaum 20 # steel yog rau cov khoom siv kho tshuab (zoo li cov khoom siv thiab Shafts). **
