DX52D thiabxwm 53dyog dav siv tsawg- carbon txias- dov thiab coated steel qib nyob rau hauv cov ntawv hlau thiab automotive industries. Kev xaiv ntawm ob cov ntaub ntawv no feem ntau yog tsim los ntawm cov kws tsim khoom, cov neeg yuav khoom, thiab cov neeg npaj tsim khoom raws li kev tsim, kev ua haujlwm zoo, kev xav tau txheej txheej, thiab tag nrho cov nqi xav tau.
Cov kev lag luam tseem ceeb- feem ntau cuam tshuam nrog formability piv rau lub zog, weldability piv rau hardenability, thiab sib sib zog nqus- kos peev xwm piv rau springback tswj.
Qhov kev ua haujlwm tseem ceeb ntawm DX52D thiab DX53D yog lawv txoj kev ua haujlwm. DX52D yog tsim los ua kom muaj kev tsim kho kom zoo, tshwj xeeb tshaj yog rau kev sib sib zog nqus- kos duab, thaum tuav lub zog nruab nrab.
Hauv qhov sib piv, DX53D tau ua kom zoo dua los muab cov txiaj ntsig siab dua me ntsis thiab lub zog tensile, tsuas yog txo qis hauv formability. Vim li no, ob qib feem ntau raug soj ntsuam ua ke, raws li lawv sawv cev rau cov qib kev ua tau zoo nyob sib ze nyob rau hauv tsis tu ncua annealed, kub-dip coated sheet steels feem ntau siv rau sab nrauv vaj huam sib luag, brackets, thiab cov hom phiaj tsim khoom.
Standards and Designation Overviewription
Cov qib steel no yog tswj hwm los ntawm ntau tus qauv European, suav nrog EN 10142 rau cov khoom txias- dov, EN 10147 rau kub- dov thiab txias- cov ntaub ntawv dov, thiab EN 10346 rau kub tsis tu ncua -dip coated steels, nrog rau cov qauv hauv teb chaws.
Thaum tshuaj xyuas cov ntaub ntawv xa khoom, nws yog ib qho tseem ceeb kom paub meej tias cov qauv siv tau thiab cov khoom siv, xws li galvanized, galvannealed, lossis organically coated.
Ob qho DX52D thiab DX53D yog nyob rau hauv qeb ntawm qis-carbon carbon-manganese sheet hlau. Lawv tsis yog cov hlau tsis muaj hlau lossis cov cuab yeej hlau, thiab lawv feem ntau tsis raug cais raws li qib HSLA niaj hnub nrog rau kev xav microalloying ntxiv. Txawm li cas los xij, qee cov tuam txhab lag luam yuav qhia cov kab mob microalloying kom zoo - kho cov khoom siv kho tshuab.
Chemical Composition thiab Alloying Approach
Cov tshuaj muaj pes tsawg leeg ntawm DX52D thiab DX53D yog tus cwj pwm los ntawm cov ntsiab lus qis carbon thiab tswj cov qib manganese. Cov pa roj carbon feem ntau khaws cia qis dua li ntawm 0.12-0.15%, thaum manganese raug tswj xyuas kom muaj zog txaus yam tsis muaj kev cuam tshuam ductility. Silicon yog tam sim no feem ntau yog cov khoom seem, thiab phosphorus thiab sulfur yog nruj me ntsis txwv rau khaws cia formability thiab sib sib zog nqus- kos duab kev ua tau zoo.
Ob qib tsis txhob txwm ua alloyed nrog cov ntsiab lus xws li chromium, molybdenum, vanadium, niobium, lossis boron. Raws li qhov tshwm sim, hardenability tseem qis, thiab cov khoom siv kho tshuab feem ntau yog tswj hwm los ntawm kev ua haujlwm ntau dua li cov qauv tsim alloy.
DX53D tuaj yeem ua tiav nws lub zog me ntsis los ntawm kev hloov kho cov kev txwv tsis pub dhau los yog nruj dua dov thiab annealing tswj es tsis yog los ntawm cov tswv yim sib txawv ntawm cov alloying.
Microstructure thiab cov yam ntxwv ua
Ob qho DX52D thiab DX53D feem ntau nthuav tawm ferritic microstructure nrog kev tswj kev faib tawm ntawm pearlite. Cov qauv no tau ua tiav los ntawm kev ua kom tsis tu ncua ua raws li kev tswj kom txias thiab, qhov twg siv tau, kub -dip galvanizing lossis galvannealing. Lub teeb tawv nqaij- dhau feem ntau yog siv los ua kom ruaj khov tawm los lub zog thiab txhim kho qhov zoo.
Cov hlau no tsis yog npaj rau quenching thiab tempering, vim tias lawv cov ntsiab lus tsis tshua muaj carbon thiab alloy muab cov lus teb tsawg heev rau cov kev kho mob. Hloov chaw, zeb-theem thermo-txheej txheem kev ua haujlwm thiab kev ua kom zoo dua qub yog thawj txoj hauv kev siv los sib txawv DX52D los ntawm DX53D. Qhov muaj zog ntxiv ntawm DX53D feem ntau yog tshwm sim los ntawm cov txheej txheem kho kom zoo dua li tom qab-kev kho cua sov ntau lawm.
Mechanical Property Comparison
DX52D feem ntau muab cov txiaj ntsig qis dua thiab lub zog tensile tab sis siab dua elongation, ua rau nws tsim nyog rau kev ua haujlwm hnyav. DX53D, ntawm qhov tod tes, muab cov txiaj ntsig siab dua thiab qhov kawg tensile lub zog, uas tuaj yeem ua tau zoo rau kev thauj khoom -cov kabmob lossis txo cov khoom tuab.
Thaum ob qib qhia tau hais tias sib piv cov tawv tawv, ductility yog siab dua nyob rau hauv DX52D, txo qhov kev pheej hmoo ntawm kev tawg thaum lub sij hawm tsim complex. DX53D yuav qhia me ntsis ntxiv hardness thiab springback, xav tau kev saib xyuas ntxiv thaum lub sij hawm tsim thiab cov cuab yeej tsim.
Weldability Considerations
Ob leeg DX52D thiab DX53D qhia tau zoo heev weldability vim lawv cov pa roj carbon tsawg thiab tsawg alloying cov ntsiab lus. Lawv zoo haum rau qhov chaw vuam, MIG / MAG, TIG, thiab lwm yam kev sib koom ua ke.
DX53D lub zog marginally siab dua tuaj yeem ua rau muaj kev xav tau me ntsis ntxiv rau hauv cheeb tsam hardness nyob rau hauv qhov txias sai, tab sis qhov no tsis tshua muaj qhov teeb meem siv vuam hauv cov ntawv nyias nyias.
Rau cov khoom coated, zinc tswj thaum lub sij hawm vuam yog qhov tseem ceeb. Kev sib koom ua ke kom zoo, kev tswj xyuas qhov ntsuas, thiab kev tuav cov fume yog tsim nyog los xyuas kom meej qhov zoo ntawm vuam thiab kev nyab xeeb ntawm tus neeg teb xov tooj.
Kev tiv thaiv corrosion thiab kev kho deg
Ob qib tsis muaj kev tiv thaiv corrosion, vim ob leeg yog cov pa roj carbon steels. Yog li ntawd, kev tiv thaiv corrosion yog ua tiav los ntawm cov txheej txheej xws li kub-dip galvanizing, galvannealing, lossis cov txheej txheem organic.
Galvannealed tiav yog tshwj xeeb tshaj yog nyiam qhov xim adhesion yog qhov tseem ceeb. Stainless- cov ntsuas hlau corrosion xws li PREN tsis siv rau cov ntaub ntawv no.
Kev tsim, Machining, thiab Fabrication Performance
DX52D muab kev sib sib zog nqus zoo tshaj - kos duab muaj peev xwm, zoo dua stretch formability, thiab txo txoj kev pheej hmoo ntawm kev sib cais los yog ntau tshaj springback. DX53D tseem tsim nyog rau kev ua haujlwm me me tab sis yuav xav tau kev tswj xyuas nruj dua ntawm lubrication, cuab yeej geometry, thiab dawb paug - tuav quab yuam.
Machinability rau ob qib feem ntau yog qhov zoo, txawm hais tias DX53D lub zog siab dua tuaj yeem ua rau me ntsis txiav quab yuam thiab cov cuab yeej hnav. Rau kev khoov thiab kev ua haujlwm hemming, DX52D yog qhov ua siab ntev ntawm cov radii nruj, thaum DX53D yuav xav tau kev them nyiaj rau lub caij nplooj ntoos hlav.
Tej kev siv
DX52D feem ntau yog siv rau cov tsheb sab hauv vaj huam sib luag, sib sib zog nqus- cov khoom sib txuas, cov khoom siv tsis yooj yim, thiab cov khoom siv vaj tsev uas xav tau kev tsim ua haujlwm.
DX53D feem ntau raug xaiv rau cov qauv vaj huam sib luag, cov hlua khi, thiab cov khoom siv uas muaj zog ntau dua ua rau kev ntsuas qhov txo qis thiab txo qhov hnyav.
Nqi, Muaj, thiab Kev Taw Qhia Kev Xaiv
Tus nqi sib txawv ntawm DX52D thiab DX53D feem ntau yog tsawg thiab cuam tshuam ntau dua los ntawm txheej txheej, tuab, thiab kev ua lag luam ntau dua li kev xaiv qib. DX53D tuaj yeem nqa tus nqi me ntsis nyob ntawm kev ua haujlwm, tab sis tag nrho cov nqi sib txawv feem ntau me me.
Los ntawm tag nrho cov nqi pom, cov khoom siv tawm los, kev txo qis, thiab kev ua haujlwm yuav tsum raug txiav txim siab. Qee qhov xwm txheej, DX53D tuaj yeem txo tus nqi tag nrho los ntawm kev ua kom cov qauv tsim, thaum DX52D tuaj yeem txo qis kev tsim thiab rov ua haujlwm hauv qhov nyuaj.
Q1: Lub npe qib steel "DX53D" txhais li cas?
A:Qhov no yog kev xaiv raws li European tus qauv EN 10346.
D:Qhia txog steel feem ntau rautxias tsim.
X53:Ib tus lej tshwj xeeb. Tus lej siab dua (piv rau DX51D) txhais tau tiastxhim kho ductility thiab sib sib zog nqus nqus peev xwm.
D:Sawv rau"Drawing" zoo, lees paub tias nws tsim nyog rau kev thov kev ua haujlwm.
Nws yog feem ntau muab raws li galvanized ntawv lossis coil, xaiv raws liDX53D+Z.
Q2: Dab tsi yog cov khoom tseem ceeb ntawm DX53D?
A:Nws tus nqi yog nyob rau hauv formability, tsis muaj zog. Tej yam khoom muaj xws li:
Yield Strength (Re):Feem ntau nyob rau hauv qhov ntau ntawm140-300 MPa. Tsis muaj qhov tsawg kawg nkaus tau teev tseg, ua qhov tseem ceeb ntawm formability.
Tensile zog (Rm):Kwv yees li270-500 MPa.
Elongation (A80): Yam tsawg kawg nkaus ntau dua lossis sib npaug li 26%(feem ntau siab dua, piv txwv li, 30-40% nyob ntawm thickness thiab ua). Qhov siab elongation no yog nws lub ntsiab lus.
Plastic Strain Ratio (r-tus nqi):Siab dua DX51D, qhia tau hais tias muaj kev tiv thaiv zoo dua rau thinning thaum sib sib zog nqus nqus.
Hardness:Feem ntau qis los pab txhawb kev deformation hnyav.
Q3: Dab tsi yog qhov txawv ntawm DX53D thiab DX51D?
A:Qhov sib txawv tseem ceeb yog qhovtheem ntawm formability:
| Feature | xwm 51d | xwm 53d |
|---|---|---|
| Kev siv thawj zaug | General forming, khoov | Daim duab sib sib zog nqus, ntau txoj kev tsim |
| Ductility/Elongation | Zoo | Zoo dua |
| r-tus nqi | Txuj | Siab dua |
| Daim ntawv thov | Ductwork, panels, txee | Cov khoom siv sab hauv lub qhov rooj, da dej da dej, complex vaj tse |
Q4: Dab tsi txheej txheej thiab qhov hnyav muaj rau DX53D + Z?
A:Nws yog feem ntau muab raws li kub -dip galvanized (+Z). Cov kev xaiv tseem ceeb muaj xws li:
Txheej Mass:Common npe yogZ100, Z140, Z200, Z275(g / m² tag nrho qhov hnyav). Kev xaiv nyob ntawm qhov yuav tsum tau muaj kev tiv thaiv corrosion.
Nto tiav:
+Z:Txheem zinc txheej (tej zaum yuav muaj spangle).
+ ZF:Zinc txheej nrog ib qho ntxivsmooth tiav(eg, daim tawv nqaij- dhau).Qhov no yog qhov feem ntau pom thiab pom zoo rau DX53Draws li nws txo qis qhov tsis xws luag thaum lub sij hawm kos duab loj thiab muab lub hauv paus tha xim zoo dua.
+ ZM:Zinc txheej nrogpassivationrau txhim kho corrosion kuj thaum lub sij hawm cia.
Q5: Cov ntawv thov tseem ceeb ntawm DX53D steel yog dab tsi?
A:Nws yog siv nyob rau hauv cov khoom uas yuav tsum tau complex duab tsim los ntawm cov ntawv hlau:
Cov khoom siv:Lub tshuab ntxhua khaub ncaws sab hauv thiab cov txee sab nrauv, tub yees liners, lub tshuab ntxuav tais diav.
Automotive:Tsis yog- cov vaj huam sib luag sab hauv, cov khoom sib txuas, cov ntaub thaiv npog.
Cov khoom siv hauv tsev:Sib sib zog nqus- kos cov dej nag fittings, qhov cua tshuab.
General Engineering:Txhua qhov yuav tsum tau muaj kev sib sib zog nqus nqus lossis ua haujlwm hnyav.
