GNEE tau coj los ntawm kev ua kom tau raws li cov neeg siv khoom xav tau thiab ua raws li txoj kev loj hlob ntawm kev lag luam tsheb thiab khoom siv hauv tsev. Relying ntawm cov cuab yeej siv ntau lawm ntau lub sij hawm, nws tshawb nrhiav thiab xyaum cov khoom siv pickled phaj, tsim cov khoom lag luam zoo, thiab ua tiav cov khoom lag luam ruaj khov, ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb thiab kev lag luam. Lawv tau siv rau hauv cov khoom siv los ntawm cov khoom lag luam paub zoo hauv tsev thiab txawv teb chaws thiab tau txais txiaj ntsig los ntawm cov neeg siv khoom.
Defects ntawm cov nplooj ntawv pickled
1.Raw khoom tsis xws luag
1.1 Lub coil txoj kab uas hla ntawm cov khoom siv raw yog tsis tsim nyog thiab me me.
Tshwj xeeb tshaj yog rau kub- dov coils nrog nyias specifications. Qhov no feem ntau yog vim cov hlau nyias nyias. Thaum lub sij hawm txias txias ntawm cov kub - dov kauj, lub nplhaib puab shrinks, loosens, thiab lub taub hau poob. Sab hauv txoj kab uas hla yuav me dua. Qhov teeb meem no cuam tshuam rau lub coiling rau qee yam. Txoj kev daws teeb meem yog tshem tawm lub nplhaib puab los ntawm phau ntawv roj txiav.
1.2 Cov npoo ntawm cov khoom siv raw yog tsis sib xws, hnyav, tawg, thiab khawb. Lub taub hau yog hnyav dua li ntawm 10m. Qhov laj thawj tseem ceeb yog tias thaum lub sij hawm coiling txheej txheem, cov npoo tsis sib npaug vim cov khoom siv thiab cov lus qhia sab, thiab cov npoo yog oozing. Thaum lub sij hawm hoisting thiab kev thauj mus los, cov cuab yeej hoisting yog siv tsis raug, cov npoo yog khawb, thiab qhov tsis xws luag xws li ntug kab nrib pleb thiab cov pawg hnyav tshwm sim los ntawm khawb hnyav kuj tshwm sim raws li. Kev daws:
(1) Kho cov khoom siv. Ua lub xeev ua hauj lwm nyob rau hauv lub tsim ntau yam;
(2) Hloov cov cuab yeej nqa.
1.3 Sickle khoov
Cov khoom siv raw khoom muaj mob hnyav khoov, cov phaj tsis zoo, qhov sib txawv ntawm cov khoom loj, thiab tus nqi ntau lawm tsis tuaj yeem txhim kho, uas muaj kev cuam tshuam zoo rau kev tsim khoom. Cov laj thawj tseem ceeb yog:
(1) Qhov kub- dov slab yog wedge- zoo li tus, lub slab tsis sib npaug, thiab nws deviates los ntawm dov center kab, ua rau tsis sib xws deformation.
(2) Qhov tseeb yob qhov sib txawv yog txawv. Lub steel sawb nyob rau sab nrog ib tug me me yob sib txawv tus nqi muaj ib tug loj deformation thiab elongation.
Txoj kev kho:
(1) Kev teeb tsa ruaj khov ntawm cov lus qhia ntawm cov menyuam sab;
(2) Kho qhov nro.
1.4 Muaj lwm yam tsis xws luag hauv cov khoom siv raw, xws li npuas, qhov ntev ntawm qhov khoov, caws pliav, suav nrog, thiab lwm yam. Qhov kev tsis zoo no yog qhov tsis xws luag uas tshwm sim los ntawm cov slab thiab kuj tsis tshua muaj.
1.5 Lub ntug ntug nthwv dej ntawm cov khoom siv raw yog qhov hnyav. Nws yog ntev li 80m. Cov laj thawj tseem ceeb yog:
(1) Thaum lub sij hawm kub dov, lub dov quab yuam yog loj heev, qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov ntau dhau ntawm cov yob yob yog me dua li ntawm nruab nrab yob, thiab ntug ntawm lub strip yog deformed heev, uas ua rau ntug nthwv dej. Tsis tas li ntawd, qhov dov ntawm lub taub hau ntawm qhov kub - dov kauj yog nyob rau theem tsis ruaj khov. Muaj qhov cua txias ntawm li 70m los ntawm qhov kawg dov zeb mus rau lub coiling, thiab lub sawb tsis muaj qhov nro, yog li qhov tsis xws luag no pom tseeb dua.
(2) Ib qho kiv cua- zoo li lub thaiv ntawm lub coiler yog hnav hnyav dua li lwm cov kiv cua- zoo li cov blocks, uas ua rau tsis muaj zog ntawm cov hlau sawb nyob rau hauv seem, uas ua rau ntug nthwv dej. Nyob rau hauv cov ntaub ntawv no, lub kho thaiv yuav tsum tau hloov nyob rau hauv lub sij hawm kom tshem tawm cov ntug nthwv dej tshwm sim los ntawm nws.
1.6 Qhov teeb meem dav: Qhov kub- dov kauj yog dav dav ntawm ob qho tag nrho thiab nqaim hauv nruab nrab. Lub ntsiab yog vim li cas rau nws tsim yog qhov nro ntawm lub taub hau thiab tus Tsov tus tw yog me me heev thaum dov. Raws li qhov ceev nce, qhov nro hauv nruab nrab yog loj heev. Kev teeb tsa tus nqi nro haum tuaj yeem txhim kho qhov xwm txheej no.
2 Cov kua nplaum- ntxuav cov phaj tsis xws luag
Qhov saum npoo ntawm lub sawb yuav tsum yog greyish dawb los yog silvery dawb tom qab pickling, dej yaug thiab ziab. Txawm li cas los xij, yog tias muaj teeb meem nyob rau hauv ib qho kev sib txuas hauv kev tsim khoom, cov phaj pickling yuav muaj qee qhov tsis xws luag, uas yuav txo tau tus nqi tawm los thiab tus nqi tsim nyog, cuam tshuam rau kev tsim khoom. Cov kev tsis xws luag ntawm pickling daim hlau yog cov ntsiab lus raws li hauv qab no.
2.1 Pickling defects
(1) Hauv qab -pickling
Tom qab lub sawb yog pickled, muaj ib co unwashed hlau oxide rau saum npoo. Tom qab dov, qhov saum npoo yog tsaus los yog stained. Hauv cov xwm txheej hnyav, cov hlau oxide raug nias rau hauv cov pob dub. Tom qab dov, vim qhov tsis sib xws txuas ntxiv, qhov tsis xws luag xws li nthwv dej lossis cov springs tshwm. Qee lub sij hawm cov hlau oxide tuaj yeem txuas mus rau saum npoo ntawm cov menyuam kom pom cov cim ntawm cov menyuam.
Cov laj thawj tseem ceeb yog:
a) Lub sij hawm pickling yog luv, thiab cov tshuaj tiv thaiv ntawm hlau oxide thiab acid tsis tau tiav;
b) Cov kua qaub concentration tsawg, thiab cov tshuaj tiv thaiv ntawm cov hlau oxide thiab cov kua qaub txo qis, ua rau cov tshuaj tiv thaiv tsis tiav thiab cov hlau oxide seem;
c) Cov kua qaub concentration tsawg thiab cov tshuaj tiv thaiv qeeb;
d) Kev txhaj tshuaj acid yog tsawg thiab cov kua qaub tsis txaus;
e) Cov nyhuv turbulent tsis zoo.
Txoj kev kho mob: xyuas kom meej tias qhov concentration, kub thiab tshuaj tsuag ntawm cov kua qaub yog nyob rau hauv qhov teeb meem, txhim khu lub fluidity ntawm cov kua qaub, tswj cov txheej txheem ceev, uas yog, xyuas kom meej lub pickling lub sij hawm kom cov tshuaj tiv thaiv txaus. Hauv qab -pickling tuaj yeem raug tshem tawm.
(2) Tshaj -pickling
Cov hlau sawb nyob twj ywm hauv cov tshuaj pickling ntev dhau lawm, thiab qhov chaw maj mam ua ntxhib thiab pitted. Lub ductility ntawm tshaj -pickled steel strip yog txo qis heev, thiab nws yooj yim rau tawg thiab tawg thaum dov, thiab nws yooj yim ua rau deviation thiab qhuav yob.
Muaj ntau qhov laj thawj rau qhov no:
a) Lub sijhawm pickling yog ntev. Cov hlau oxides thiab cov kua qaub ua kom tiav thiab tom qab ntawd corrode lub substrate;
b) Cov kua qaub concentration yog siab, thiab cov tshuaj tiv thaiv ntawm cov hlau oxides thiab acid nce. Tom qab cov tshuaj tiv thaiv tiav lawm, lub sawb tsis tau tawm hauv lub tank acid thiab corrodes lub substrate;
c) acid kub yog siab thiab cov tshuaj tiv thaiv ceev ceev;
d) Cov kua qaub ntim ntim loj thiab cov kua qaub ntim txaus;
e) Kev kub ntxhov loj, thiab lwm yam.
Txoj kev kho mob:
a) Txo qhov concentration ntawm pickling;
b) Tsim nyog txo cov kua qaub kub;
c) Txo cov kua qaub tsuag;
d) Tsim nyog ntxiv cov tshuaj tiv thaiv corrosion, uas tsim cov yeeb yaj kiab tiv thaiv ntawm lub substrate los tiv thaiv substrate thiab tiv thaiv lub substrate los ntawm corrosion.
(3) Dej xeb
Tom qab cov hlau sawb yog pickled, muaj cov kua qaub seem ntawm qhov chaw uas tsis tau rinsed kom huv si los yog ziab tsis zoo tom qab rinsing, tshwj xeeb tshaj yog cov npoo yog cov dej xeb. Tom qab dov, qhov chaw xeb yuav tsaus, lossis cov khoom tiav yuav xeb dua hauv cov khoom muag. Cov laj thawj tseem ceeb yog: kev yaug dej tsis txaus, tsis txaus cov tshuaj tsuag dej tsis txaus thiab ntws, dej tsis txaus, ua rau Fe2+ thiab Cl- concentrations hauv dej tom qab yaug ntau tshaj qhov teeb tsa.
Hauv qhov no, ntau yam yuav tsum tau kuaj xyuas:
a) Tshawb xyuas lub tshuab nyem kom pom tias cov menyuam yuav tsum tau hloov pauv nyob ntawm seb qhov hnav zoo li cas;
b) Txawm hais tias cov tshuaj tsuag lub siab nyob rau hauv cov dej yaug ntu yog qhov qub;
c) Tshawb xyuas seb qhov kub ntawm lub tshuab ziab khaub ncaws puas nyob ntawm tus nqi teev;
d) Txheeb xyuas qhov conductivity ntawm cov dej yaug thiab ua kom cov dej ntxiv ntxiv.
(4) Chaw nres tsheb
Lub tshuab nres vim qee yam. Qhov no ua rau ib ntu ntawm cov hlau nplaum rau hauv cov kua qaub thiab dej, ua rau cov phaj saum npoo dhau -pickled thiab xeb. Qhov teeb meem no tshwm sim los ntawm qhov chaw nres tsheb. Ua ntej pib, peb yuav tsum xyuas kom meej tias txhua yam khoom siv nyob rau hauv kev ua haujlwm zoo thiab sim tsis txhob nres lossis nres tsawg li tsawg tau.
2.2 Nto tsis xws luag
(1) tawv tawv
Hauv zos stratification nyob rau saum npoo ntawm cov sawb, feem ntau tshwm sim ntawm lub taub hau lossis ntug ntawm lub sawb, thiab txuas nrog cov kev taw qhia dov. Feem ntau stratification tshwm sim tom qab txias dov. Cov xwm txheej hnyav tuaj yeem ua rau lub qhov, tawg strips, thiab yob qhuav.
(2) Scarring
Nto hnyav qhov chaw ntawm cov duab sib txawv thiab qib. Muaj feem ntau suav nrog lossis hlau oxide nplai hauv qhov caws pliav.
(3) Kos
Cov khawb tshiab uas tshwm sim thaum lub sijhawm ua haujlwm ntawm cov hlau strip pickling chav tsev: qhov khawb qhov tob yuav tsum tsis pub tshaj 50% ntawm qhov sib txawv thickness, thiab tsis muaj qhov pom tseeb ntawm tes.
Muaj ob hom kev khawb: a) khawb tsis tu ncua; b) irregular khawb.
Rau kev khawb ib txwm, ua ntej txiav txim siab qhov kev ncua deb ntawm qhov khawb los txiav txim siab seb qhov twg cov khawb yuav tshwm rau hauv. Tom qab ntawd paub meej thiab tshem tawm lawv. Rau irregular khawb. Qhov laj thawj tseem ceeb ntawm kev khawb yog qhov tsis sib xws ntawm cov hlau sawb, tsis ruaj tsis khov los yog cov phaj tsis zoo.
Cov txheej txheem los tshem tawm qhov tsis xws luag yog: a) Ua kom cov cuab yeej ua haujlwm zoo ib yam; b) Txhim kho lub phaj zoo.
2.3 Edge defects
Thaum lub sij hawm cov txheej txheem ntawm pickled steel los xij, muaj ntau yam tsis xws luag tshwm sim ntawm ntug vim lub trimming shear thiab lwm yam khoom siv, xws li tsis sib xws shearing, qhov khoob, uncut pov tseg npoo, burrs, thiab lwm yam. Lub ntsiab yog vim li cas rau nws tshwm sim yog:
(1) Yog tias qhov teeb tsa tus nqi ntawm qhov sib txawv ntawm rab riam yog qhov loj, cov ntug yog qhov tsis sib xws ntawm cov npoo thiab burrs.
(2) Qhov hnyav ntawm riam yog loj, thiab ntug tsis sib xws.
(3) Cov riam tau tawg, thiab yuav muaj "nqaij" raws li ntu ntu ntawm tus yuam sij.
(4) Kev hnav riam ntau dhau. Burrs yog nquag tshwm sim ntawm ntug.
Qhov no yuav tsum tau tshuaj xyuas ntau zaus ntawm qhov sib txawv ntawm rab riam thiab qhov ntsuas qhov hnyav, nrog rau seb rab riam puas hnav ntau dhau thiab chipping. Yog tias pom muaj teeb meem, cov riam yuav tsum tau hloov los yog qhov sib txawv ntawm rab riam thiab qhov hnyav yuav tsum tau kho raws sij hawm raws li qhov tsis xws luag.
2.4 Cov tsos mob tsis zoo
Vim yog vim li cas ntawm cov coiler thiab lwm yam khoom siv, ntauwd tsis xws luag qee zaum tshwm sim. Thaum tus pej thuam ntawm ib sab tshaj 30mm, nws yog suav tias yog seem. Cov laj thawj tseem ceeb yog raws li hauv qab no:
(1) Cov hlab ntsha ntawm lub tog raj kheej sab sauv thiab sab qis ntawm tus pab txoj siv txoj hlua winding yog qhov sib txawv, ua rau muaj kev sib txawv ntawm cov neeg siv txoj siv los qhwv lub mandrel. Thaum txoj hlua hlau nkag mus rau hauv lub mandrel rau winding, qhov nruj ntawm txoj siv steel winding yog txawv. Sab nrog lub tog raj kheej loj dua muaj lub zog nruj dua thiab lwm sab yog xoob. Lub sab xoob muaj lub coil txoj kab uas hla loj dua thiab nws yooj yim los ua ib tug pej thuam thaum winding.
(2) Muaj teeb meem nrog txoj siv txoj hlua khi. Thaum txoj siv sia tau txais threaded, qhov qis - txoj hauj lwm sib thooj hloov xa ib lub teeb liab los qhib txoj siv txoj siv sia thaum siv txoj siv tawv ob thiab ib nrab tig. Lub sijhawm no, qhov nro tsis tau tsim. Thaum tus pab txoj siv tau qhib, ob thiab ib nrab lem uas tau raug mob yuav loosen.
Txoj kev kho mob:
(a) Theem txoj siv hlua khi kom lub zog ntawm txoj siv thiab lub mandrel sib xws;
(b) Thaum siv txoj siv tsis siv neeg threading, hloov tus qauv tsim ntawm strip steel coiling los ntawm ob thiab ib nrab tig mus rau plaub lem (phaj thickness 3.0 ~ 4.0mm) mus rau tsib lem (phaj thickness 2.0 ~ 3.0mm);
(c) Txoj siv ntawm tus thawj txoj siv winder yog me ntsis nqaim. Tus tsim thawj yog 400 hli, thiab tam sim no nws tau dav mus rau 500 hli. Cov nyhuv coiling yog pom tseeb dua.
(d) Txhim khu kev tshuaj xyuas cov cuab yeej ua kom cov cuab yeej ua haujlwm ruaj khov.
Yuav ua li cas los txhim kho qhov zoo ntawm pickled steel daim hlau
1 Txhim khu kev tswj kom zoo
Nws yog ib qho tseem ceeb heev rau kev lag luam kom muaj kev tswj xyuas zoo thiab cov kev tswj xyuas zoo. Nws tuaj yeem hais tias nws muaj feem xyuam rau kev ciaj sia thiab kev loj hlob ntawm ib lub lag luam. Raws li qhov xwm txheej tshwj xeeb ntawm lub rooj cob qhia, GNEE tau tsim cov kev cai thiab kev tswj kom ntxaws, siv lawv txheej los ntawm txheej, pom qhov teeb meem, daws teeb meem, thiab tsis txhob tso ib qho teeb meem.
2 Txhim kho cov kev txawj ntawm cov neeg ua haujlwm
Cov cuab yeej siv hluav taws xob siab heev yuav tsum tau ua los ntawm cov neeg ua haujlwm tsim nyog los tsim cov khoom zoo siab - cov khoom zoo pickling phaj. GNEE cov chaw tsim khoom thiab kev cob qhia tseem ceeb heev rau kev txhim kho cov kev txawj ntawm cov neeg ua haujlwm, thiab feem ntau npaj kev kawm, los ntawm kev xav mus rau kev xyaum, thiab caw cov kws qhia paub txog los piav qhia txog cov teeb meem uas feem ntau tshwm sim hauv kev tsim khoom thiab yuav ua li cas nrog lawv. Cov neeg ua haujlwm sai sai yuav tuaj yeem ua lawv txoj haujlwm thiab pab txhawb GNEE.
pickled steel lwm tus neeg
GNEE muaj kev tshawb fawb thiab kev loj hlob muaj peev xwm nyob rau hauv pickling steel cov ntaub ntawv thiab siv technology kev tshawb fawb. Nws tuaj yeem ua tiav tag nrho -kev koom tes nrog cov neeg siv khoom, qhia cov neeg siv khoom hauv kev xaiv cov khoom siv, daws teeb meem hauv kev siv, muab cov neeg siv nrog ib pob ntawm cov kev daws teeb meem rau tag nrho cov txheej txheem ntawm kev siv cov khoom siv, muab kev txhawb nqa rau cov neeg siv khoom ruaj khov batch ntau lawm, thiab muab cov neeg siv khoom muaj nqis - ntxiv cov kev pabcuam.Tiv tauj pebtam sim no kom tau txais kev daws teeb meem.
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