Thaum xaiv cov hlau rau cov qauv siv los yog kev lag luam, kev nkag siab txog cov khoom sib npaug thoob ntiaj teb cov qauv yog qhov tseem ceeb. ASTM A36, siv dav siv qis- carbon steel txhais los ntawm American Society for Testing and Materials (ASTM), yog ib qho tseem ceeb hauv kev tsim kho, txuas hniav, thiab cov kev ua haujlwm dav dav.
Rau cov neeg ua haujlwm hauv lossis kev xa khoom los ntawm Tuam Tshoj, cov lus nug feem ntau tshwm sim: Suav sib npaug ntawm ASTM A36 yog dab tsi? Cov lus teb yog Q235B, raws li tau teev tseg hauv Suav tus qauv GB / T 700.
ASTM A36, them raws li tus qauv ASTM A36/A36M, yog ib qho qis- carbon structural steel paub rau nws ntau yam, weldability, thiab nqi-effectiveness. Nws cov khoom tseem ceeb muaj xws li:
Cov tshuaj muaj pes tsawg leeg: Txog li 0.26% carbon, 0.60-0.90% manganese, thiab cov lej ntawm phosphorus, sulfur, thiab silicon.
Mechanical Properties: Yam tsawg kawg nkaus lub zog ntawm 36,000 psi (250 MPa) thiab tensile zog ntawm 58,000-80,000 psi (400-550 MPa).
Daim ntaub ntawv: Siv dav hauv cov khoom siv xws li kab teeb, daim hlau, thiab cov ces kaum rau cov tsev, txuas hniav, thiab tshuab.
A36's kub- dov txheej txheem ntau lawm muab nws ib tug me ntsis ntxhib nto tab sis ua rau nws zoo tagnrho rau loj -scale tej yaam num uas muaj zog thiab pheej yig yog qhov tseem ceeb.
Q235B: Suav sib npaug
Suav sib npaug rau ASTM A36 yog Q235B, raws li tau teev tseg hauv GB / T 700 tus qauv. Q235B yog ib qho qis- carbon steel dav siv hauv Suav teb rau kev siv cov qauv zoo sib xws. Nov yog saib ze dua ntawm nws cov khoom:
Chemical Composition: Q235B muaj txog li 0.20% carbon, 0.35-0.80% manganese, thiab me me ntawm silicon, phosphorus, thiab sulfur. Nws muaj pes tsawg leeg yog ze rau A36, txawm hais tias A36 tso cai me ntsis cov ntsiab lus carbon ntau dua.
Mechanical Properties: Q235B muaj qhov tsawg kawg nkaus lub zog ntawm 235 MPa (kwv yees li 34 ksi) thiab lub zog tensile ntawm 370-500 MPa. Thaum lub zog tawm los yog qis dua A36 me ntsis, lub zog tensile ntau sib tshooj ntau heev.
Daim ntaub ntawv: Q235B yog siv rau hauv kev tsim kho, cov qauv welded, thiab kev tsim vaj tsev dav dav, tsom iav A36 qhov kev ua tau zoo hauv cov choj, cov tsev, thiab cov tshuab.
Zoo li A36, Q235B feem ntau yog kub- dov, ua rau nws tsim nyog rau kev siv cov txheej txheem uas qhov chaw tiav yog qhov tseem ceeb tshaj qhov muaj zog thiab tus nqi.
Sib piv ASTM A36 thiab Q235B
|
Khoom |
ASTM A36 |
Q235B (GB/T 700) |
|---|---|---|
|
Cov ntsiab lus carbon |
Tsawg dua lossis sib npaug li 0.26% |
Tsawg dua lossis sib npaug li 0.20% |
|
Manganese |
0.60-0.90% |
0.35-0.80% |
|
Yield zog |
250 MPa (36 ksi) |
235 MPa (34 ksi) |
|
Tensile zog |
400-550 MPa |
370-500 MPa |
|
Elongation |
20-23% |
20-26% |
|
Ntau lawm |
Kub- dov |
Kub- dov |
Qhov Tseem Ceeb Zoo sib xws
Tsawg- Cov ntsiab lus Carbon: Ob lub steels tsawg- carbon, kom ntseeg tau zoo weldability thiab formability.
Kev siv cov qauv: A36 thiab Q235B yog siv hauv kev lag luam zoo sib xws, suav nrog kev tsim kho thiab kev tsim vaj tsev hnyav.
Tus nqi-Kev ua tau zoo: Ob qho tib si pheej yig, ua rau lawv nrov rau cov haujlwm loj -.
Qhov txawv tseem ceeb
Yield Strength: A36 muaj lub zog qis dua me ntsis (250 MPa vs . 235 MPa), uas tej zaum yuav muaj teeb meem hauv siab -load daim ntawv thov.
Cov Qauv thiab Kev Ntsuas: ASTM A36 ua raws li Asmeskas cov qauv, thaum Q235B ua raws li Suav GB / T 700 tus qauv, uas yuav txawv ntawm cov txheej txheem kev xeem thiab kev ua siab ntev.
Kev sib xyaw ua ke: A36 qhov siab dua cov ntsiab lus carbon (txog 0.26%) tuaj yeem ua rau muaj qhov sib txawv me me ntawm lub zog thiab tawv piv rau Q235B qhov nruj dua (txog 0.20%).
Lwm yam Q235 Variants
Q235 qib suav nrog subtypes xws li Q235A, Q235C, thiab Q235D, uas sib txawv me ntsis hauv cov khoom thiab cov khoom:
Q235A: Cov kev cai nruj me ntsis rau kev cuam tshuam toughness, siv hauv cov ntawv thov tsawg dua.
Q235C thiab Q235D: Tsim los rau qis qis, nrog kev txhim kho toughness piv rau Q235B.
Ntawm cov no, Q235B yog qhov sib tw ze tshaj plaws rau ASTM A36 vim nws cov khoom sib npaug thiab siv dav hauv kev siv cov qauv.
Tswv yim rau kev xaiv ntawm A36 thiab Q235B
Thaum txiav txim siab seb puas yuav siv ASTM A36 lossis Q235B, xav txog cov hauv qab no:
Project Specifications: Xyuas kom cov khoom ua tau raws li tus qauv xav tau (ASTM lossis GB / T) rau koj cheeb tsam lossis cov neeg siv khoom.
Muaj: Hauv Suav teb, Q235B tau yooj yim dua thiab feem ntau raug nqi ntau dua - zoo. Rau cov haujlwm thoob ntiaj teb uas xav tau ASTM ua raws, A36 nyiam dua.
Daim Ntawv Thov Kev Thov: Rau siab - kev xav tau ntawm cov qauv tsim, A36 lub zog siab dua me ntsis tuaj yeem ua tau zoo. Rau qhov dav - siv lub hom phiaj, Q235B feem ntau txaus.
Daim ntawv pov thawj: Xyuas kom tseeb tias tus neeg muag khoom muab cov ntaub ntawv pov thawj kom paub meej tias ua raws li tus qauv tsim nyog.
