1. Dab tsi yog qhov corrosion tiv taus txias - rolled steel? Vim li cas thiaj li liab qab txias - rolled steel nquag mus xeb? Txias - rolled steel muaj kev tsis zoo corrosion tsis kam (ntau qis dua li galvanized steel thiab stainless hlau):
Vim li cas: txias {- Rolled steel yog raws li cov roj carbon hlau (muaj cov hlau) thiab tsis muaj hlau tawm (tshem tawm los ntawm pickling). Thaum nthuav tawm huab cua / ya raws, tus hlau reacts ntsuas nrog oxygen thiab hydrogen rau cov fe₂o₃ (xeb).
Tus Nqi Rust: Hauv ib puag ncig huab cua thiab high {{0} Kev cob qhia huab cua), xeb npov tuaj yeem tshwm sim tsis pub dhau 1- 2 hnub. Nyob rau hauv cov chaw qhuav, tus qauv hlau tuaj yeem khaws cia rau 1-2 lub lis piam (whoodsure-pov thawj).
Yog li, liab qab txias - rolled steel yuav tsum tau ua kom sai li sai tau lossis nws txoj kev tiv thaiv corrosion yuav tsum tau txhim kho los ntawm kev pleev xim, thiab lwm txoj kev.
2. Yuav ua li cas yog lub hardness ntawm txias-} rolled steel kuaj? Dab tsi yog qhov hardness ntau rau cov khoom sib txawv? Cov Qauv Kev Xeem: Brinell Hardness (HB) lossis Vickers Hardness (HV) (HV) (HV) (HV) (HV) (HV) (HV) (HV) (HV) (HV) (HV) (HV) (HV) Hardness ranges rau cov khoom sib txawv (tom qab annealing):
Qeb ib qib twg (DC01 / spcc): HB 60-80, hv 70-90 (tsis muaj zog, yooj yim rau cov txheej txheem);
Stamping qib (DC03 / SPCD): HB 55-75, HB 55, HB 65-85 (zoo dua ductility, me ntsis qis tawv);
Kev sib sib zog nqus yog qib (DC06 / SPCE): HB 50-70, HV 60-80 (kev ua tau zoo tshaj plaws, qis tshaj plaws ntawm lub siab);
Kev txias txias - rolled steel (xws li spcc {{, hv 100-140 (siab lub zog, haum rau cov qauv sibts).
3. Dab tsi yog "flatness" tsis xws luag ntawm txias - rolled steel? Lawv kuaj tau li cas? Phaj qauv tsis xws luag (teeb meem cuam tshuam rau cov tiaj nciab thaum ua tiav):
Waviness: Ntug yoj (tsa sawv ntawm ob sab ntawm lub phaj), chaw yoj (tsa chaw ntawm lub phaj), thiab al4 ntawm txoj kev los ntawm ntug);
Hneev: lub phaj yog nkhaus tag nrho (zoo li lub hau ntev) thiab tsis tuaj yeem nteg tiaj tus;
Scythe camber: ntug yog curved (pom tom qab uncoiling);
Kev Ntsuas Cov Qauv:
Pom kev kuaj xyuas: nteg daim phaj tiaj ntawm lub platform thiab saib xyuas cov bulges / kev ntxhov siab;
Instrumental soj ntsuam: siv "cov meter 'meter') kom ntsuas kev ntxhov siab ntawm cov ntsiab lus ntawm lub sijhawm thiab tsim kom muaj kev nkhaus zoo li qub).
4. Dab tsi yog "Weldability" ntawm txias- rolled phaj? Yuav ua li cas vuam txoj kev yog haum? Txias - rolled steel (carbon cov ntsiab lus tsawg dua los yog sib npaug ntawm cov ntsiab lus carcc) tsawg dua lossis sib npaug rau ntau txoj kev vuam txoj kev:
Arc vuam (phau ntawv vuam): Tsim los ntawm tuab txias {{rolled steel (ntau dua rau kev sib sau cov txheej txheem, siv J422 elecodes;
Kuj tseem ua hluav taws xob vuam: haum rau nyias txias {{rolled hlau (0.3-1ongs chassis (0.3-1
Cov thaiv cov hluav taws xob vuam (sib xyaw rau nruab nrab {{
NCO TSEG: Weld Slag yuav tsum tau muab tshem tawm tom qab vuam, thiab Weld leeg yuav tsum tau pleev xim rau xeb kev tiv thaiv (txias {}} rolled steel welds muaj kev xeb).
5. Qhov twg txias - rolled steel feem ntau siv nyob rau hauv kev lag luam tsheb? Vim li cas thiaj xaiv cov khaub thuas - rolled steel? Kev lag luam automotive yog thaj chaw thov cov tub ntxhais rau txias - rolled steel (accounting rau ntau dua 30% ntawm tag nrho cov kev thov). Cov ntawv thov tseem ceeb muaj xws li:
Lub cev Panels: qhov rooj, cov khoom ntoo, thiab cov pob tw (siv cov hlau sib sib zog nqus {}}}
Lub cev cov qauv sib xyaw: thav duab, crossmembers, thiab rolled {} lub zog txias dua los yog sib npaug nrog 340 MPa kuj tsis kam lees);
Cov Cheebtsam Sab Hauv: Ntsuas Vaj Huam Sib Luag nkhaus thiab cov ntas lub rooj zaum (siv cov qauv -
Cov laj thawj rau kev xaiv: Lub siab qhov tseeb (ua kom nruj nruj hauv lub cev sib dhos); du nto (kev ua kom yooj yim); Kho tau lub zog (hloov kho tau rau ntau qhov yuav tsum tau); Thiab zoo heev weldability (pab txhawb nqa lub cev sib dhos).
6. Khoom siv hauv tsev kev lag luam siv txias - rolled steel rau? Vim li cas qee cov khoom siv hauv tsev siv cov khaub thuas galvanized txias- rolled steel es tsis txhob txias txias {}} rolled steel? Cov ntawv thov hauv cov khoom lag luam hauv tsev:
Sab Sij Huam: Cov Khaub Ncaws Sab Hauv Tsev, Tshuab Ntxhua Khaub Ncaws, Siv Tus Qauv Ua Si thiab Rust} Cov Khoom Siv Hluav Taws Xob ({
Interers: tshuab ntxhua khaub ncaws nruas, siv lub tub yees evaporator (siv cov khaub noom dc03, xav tau cov ntoo uas yuav tsum muaj
Cov Txheej Txheem Txheej Txheem: Microwave cub nkhaus, siv cov khaub thuas txias ({rolled steel spcc- sd rau lub zog siab thiab kev txhawb nqa ruaj khov);
Cov laj thawj rau kev siv galvanized txias - cov hlau (xws li SGCC): Kev siv hluav taws xob hauv tsev xav tau (5 {}} 10 xyoo). Raug cov hlau txias-rolled yog raug rau xeb yog khawb. Lub zinc txheej ntawm Galvanized Stand Corility Forrody (Zinc corrodes ua ntej hauv cov khoom siv ntawm cov khoom siv ntawm cov khoom siv ntawm cov khoom siv sab nraud (piv txwv li cov cua txias sab nraum zoov feem ntau galvanized).
7. Dab tsi yog cov ntawv thov ntawm cov khaub thuas- rolled steel nyob rau hauv cov khoom lag luam hluav taws xob? Puas muaj cov tshwj xeeb tshwj xeeb rau cold- rolled steel? Cov ntawv thov kev lag luam hluav taws xob:
Chassis / Case: Computer chassis, router kis, thiab cov neeg rau zaub mov txias (siv cov pob tawb kom huv thiab tsis muaj kev tiv thaiv kom yooj yim sib dhos);
Lub dab dej cua sov: qhov cua sov so rau qee qhov qis -} {1} {1} {1} {1} Tus nqi hluav taws xob los txhim kho cov thermal conductivity, tus nqi qis dua li alloy alloy);
Connectors: Lub Caij Nplooj Ntoos Hlav rau cov khoom hluav taws xob me me (siv cov hlau txias (xws li SpCc- sd, rau kev tawv me me thiab zoo nkauj);
Cov kev tshwj xeeb:
Siab nto huv (tsis muaj roj lossis khawb kom tsis txhob ua kom tsis txhob muaj kev cuam tshuam lub rwb thaiv tsev ntawm Cheebtsam hluav taws xob);
Cov vaj huam sib luag siab (piv txwv li cov chassis vaj huam sib luag lub qhov xwm txheej loj dua lossis sib npaug rau 0.1mm kom ntseeg tau ntsia hlau los);
Tsis - Cov khoom siv sib nqus (qee cov khoom siv hluav taws xob txias yuav tsum tsis txhob- Cov hlau tsis tswj hwm hauv cov hlau, xws li txo cov ntsiab lus ntawm Nickel).