1.What yog cov txheej txheem anealing nyob ntawm cov txheej txheem txheej txheem thiab huab cua sov?
Daim ntawv qhia dav dav tag nrho: Tus hlau yog rhuab rau 30-50℃rau saum toj no AC3 (rau cov hlau hyphoutectiod) lossis acceleutectiid hlau), tuav ntawm qhov kub no, thiab tom qab ntawd txias. Qhov no hloov cov hlau ua qauv qauv ntawm Phoplite + ferrite (rau kev tshem tawm hypeutectiid steel), elongation yuav nce li kwv yees li 10% tom qab dov mus rau ntau dua 30%). Hom qauv no yog tsim nyog rau cov khoom uas xav tau lub meej mom siab (xws li automotive basrings).
Kev hloov cua sov tsis tiav: Cov cua sov nyob hauv qab AC3, tso cai ib nrab ntawm micrubtructure hloov, txo qis tawv thaum khaws ib qho℃ntawm lub zog. Hom no yog qhov tsim nyog rau cov ntawv thov uas xav tau kev sib npaug ntawm lub zog thiab muaj zog.
Ci annealing: annealing yog ua nyob rau hauv cov roj inert (xws li nitrogen) lossis lub tshuab nqus tsev los tiv thaiv kom tiv thaiv cov oxidation. Tom qab annealing, cov nplaim suav cov smoothness ntawm txias txias (roughness ra tsawg dua lossis sib npaug ntawm 1.6μm), tshem tawm qhov xav tau rau pickling tom ntej. Hom no feem ntau siv rau cold- rolled steel ntawv rau cov twj paj nruag thiab khoom noj ntim khoom.
2.Yog li cas los tshem tawm nto teev / stains?
Yog tias teev tau nthuav tawm nyob rau saum npoo kub - rook rearing, los yog yog tias nplai rouging)
Ib qho txheej txheem pickling yog hydrochloric acid pickling: cov hlau yog raus rau hauv 10-20% hydrochloric acid tov (kub 40- 6-60 degree). Cov nplai (feem ntau tsim ntawm fe₂o₃ thiab fe₃o₄) reacts nrog cov kua ntses hydrocoric los ua soluble chlorides (xws li tshem tawm nrog kev daws teeb meem. Qhov no tseem tshem tau cov roj paug rau cov roj av (cov thermal txiav txim ntawm cov roj hydrochloric acid, ua ke nrog surfactants, txhawb nqa emulsification thiab tshem cov roj paug). Tom qab pickling, yaug nrog dej huv los tiv thaiv cov khoom seem los tiv thaiv cov roj av los ntawm corroding cov hlau.
3.Txhua li cas los hloov kho lub rooj tsavxwm thiab tswj cov chaw zoo?
Kho cov ntawv hlau: cov tawv nqaij -}}}} {2mm) thiab ua tiav cov qauv kev ncaj qha (piv txwv li, nyo hau tsawg dua lossis sib npaug rau 2 hli ib meter).
Kho kom haum saum npoo av: qhov chaw saum npoo ntawm cov khaub thuas - rolled steel-} {, matte lossis du). Yog tias tom ntej pleev xim yog qhov yuav tsum tau, cov menyuam muaj ntxib tuaj yeem nce qhov saum npoo av (ra {{} μm) txhawm rau txhim kho cov xim adhesion; Yog tias qhov pom tau zoo yog qhov xav tau, cov menyuam yaus du tuaj yeem txo cov roughness (ra tsawg dua lossis sib npaug rau 0.8μm).
Stabilizing cov cuab yeej: dov nrog kev tiv thaiv tsawg dua "Kev Discing Discection thaum ua haujlwm qeeb) thaum siv tau, ua kom muaj kev ruaj khov. Piv txwv li, tom qab tawv nqaij -}}}}}}}}}}}}} deformation thaum lub sijhawm stamping tuaj yeem tiv thaiv kom haum ntawm cov pob hluav taws xob.
4.How kev txiav / sawb?
Shearing: rau cov ntawv tiaj tus kheej, txiav cov hlau chev dav dav hlau rau hauv daim ntawv tiaj tus) lossis cov hlo me me ntev rau hauv daim ntawv tiaj) yog siv. Kev txiav qhov raug yuav tsum tau tswj hwm (kev zam txim rau kev tawm tsam ntev thiab sib npaug rau 0.05 hli, txwv tsis pub nws yuav cuam tshuam rau kev sib dhos ua ntej lossis siv).
Slitting: rau nqaim ntau lawm, ntau cov txheej ntawm slitting shears ua rau ntau txoj hlua nqaim (piv txwv li xaub mus rau hauv tsib 250 hli dav strips). Tom qab slitting, nqaim nqaim yog coiled rau hauv me yob (weighing 1-5 tons kev thauj mus los thiab siv tau yooj yim.
5.Txoj kev tiv thaiv / kev tiv thaiv / kev tiv thaiv ua haujlwm nyob saum toj no?
Galvanizing: Kub - dip galvanizing (cov txheej txheem corrosion -}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Nws yog ib qho siv rau kev tsim kho cov hlau thiab tsheb chassis.
Painting / Laminating: Ua ntawv thov cov txheej txheem organic (xws li cov xim eposion) lossis cov yeeb yaj kiab tshwj xeeb (xws li cov xim dawb thiab grey) lossis cov duab ntoo (xws li ntoo thiab pob zeb zeb). Nws yog qhov haum rau cov cuab yeej siv (xws li tub yees thiab ntxhua khaub ncaws) thiab cov hlau zoo nkauj.
Nickel / Chromium plating: Electroplating npib hluav taws xob (rau cov txiaj ntsig zoo nkauj uas tiv thaiv kev hnav khaub ncaws, tawv chrome, nyuaj) yog siv rau saum npoo. Nws yog siv rau cov khoom siv ntsuas hluav taws xob thiab cov khoom siv kho vajtse.