Yuav ua li cas kom ntseeg tau tias qhov corrosion tsis kam ntawm cov khoom siv raw ntawm cov saw hlau?

Yuav ua li cas kom ntseeg tau tias qhov corrosion tsis kam ntawm cov khoom siv raw ntawm cov saw hlau?

1. Kev xaiv khoom siv
1.1 Xaiv cov hlau uas muaj zog tiv taus corrosion
Hlau yog cov khoom siv tseem ceeb ntawm cov saw hlau, thiab nws txoj kev tiv thaiv corrosion ncaj qha cuam tshuam rau lub neej kev pabcuam thiab kev ua tau zoo ntawm cov saw hlau. Kev xaiv hlau nrog kev tiv thaiv corrosion muaj zog yog thawj kauj ruam los xyuas kom meej tias qhov kev tiv thaiv corrosion ntawmcov saw hlau.
Kev siv cov khoom siv hlau tsis xeb: Hlau tsis xeb yog ib qho ntawm cov hlau uas feem ntau siv los tiv thaiv xeb. Nws muaj qee qhov feem pua ​​ntawm cov ntsiab lus chromium, uas tuaj yeem tsim cov zaj duab xis chromium oxide ntom ntom ntawm qhov chaw kom tiv thaiv cov khoom siv corrosive los ntawm kev sib cuag sab hauv ntawm cov hlau. Piv txwv li, cov ntsiab lus chromium ntawm 304 stainless hlau yog li 18%, uas muaj kev tiv thaiv corrosion zoo thiab haum rau cov chaw corrosive dav dav. Hauv qee qhov chaw tshwj xeeb, xws li cov chaw dej hiav txwv nrog cov ntsiab lus chloride ion siab, 316 stainless hlau muaj kev tiv thaiv pitting muaj zog dua vim muaj cov ntsiab lus molybdenum ntxiv, thiab nws qhov kev tiv thaiv corrosion yog li 30% siab dua li ntawm 304 stainless hlau.
Kev tiv thaiv xeb ntawm cov hlau sib xyaw: Cov hlau sib xyaw tuaj yeem txhim kho qhov kev tiv thaiv xeb ntawm cov hlau los ntawm kev ntxiv ntau yam khoom sib xyaw, xws li nickel, tooj liab, titanium, thiab lwm yam. Piv txwv li, kev ntxiv nickel tuaj yeem txhim kho qhov ruaj khov ntawm cov zaj duab xis passivation ntawm cov hlau, thiab tooj liab tuaj yeem txhim kho qhov kev tiv thaiv xeb ntawm cov hlau hauv qhov chaw ib puag ncig. Tom qab kev kho cua sov kom zoo, qee cov hlau sib xyaw muaj zog siab tuaj yeem tsim cov zaj duab xis oxide sib xws ntawm qhov chaw, ua rau lawv qhov kev tiv thaiv xeb zoo dua. Piv txwv li, siv cov hlau sib xyaw uas muaj nickel thiab tooj liab, nws qhov kev tiv thaiv xeb hauv qhov chaw ib puag ncig kev lag luam tsuas yog 1/5 ntawm cov hlau carbon ib txwm muaj.
Cov nyhuv ntawm kev kho saum npoo ntawm cov hlau rau kev tiv thaiv xeb: Ntxiv rau kev xaiv cov hlau tsim nyog, kev kho saum npoo kuj yog ib txoj hauv kev tseem ceeb los txhim kho kev tiv thaiv xeb ntawm cov hlau. Piv txwv li, ib txheej ntawm zinc, nickel thiab lwm yam hlau yog plated rau ntawm qhov chaw ntawm cov hlau los ntawm kev siv tshuab plating los tsim ib qho kev thaiv lub cev kom tiv thaiv cov xov xwm corrosive los ntawm kev sib cuag nrog cov hlau. Cov txheej galvanized muaj kev tiv thaiv xeb zoo hauv qhov chaw ib puag ncig, thiab nws lub neej tiv thaiv xeb tuaj yeem ncav cuag ntau xyoo. Cov txheej nickel-plated muaj qhov nyuaj dua thiab zoo dua hnav tsis kam, thiab kuj tuaj yeem txhim kho kev tiv thaiv xeb ntawm cov hlau. Tsis tas li ntawd, kev kho tshuaj hloov pauv zaj duab xis, xws li phosphating, tuaj yeem tsim cov tshuaj hloov pauv zaj duab xis rau ntawm qhov chaw ntawm cov hlau los txhim kho kev tiv thaiv xeb thiab txheej nplaum ntawm cov hlau.

2. Kev kho qhov chaw
2.1 Kev pleev xim kub
Kev pleev xim galvanizing yog ib qho ntawm cov txheej txheem tseem ceeb rau kev kho cov hlau ntawm cov saw hlau. Los ntawm kev pleev xim rau saum npoo ntawm cov hlau nrog ib txheej zinc, nws tuaj yeem txhim kho nws txoj kev tiv thaiv xeb.
Txoj cai tiv thaiv ntawm cov txheej galvanized: Zinc tsim cov zaj duab xis zinc oxide ntom ntom hauv qhov chaw ib puag ncig, uas tuaj yeem tiv thaiv cov khoom siv corrosive los ntawm kev sib cuag nrog cov hlau. Thaum cov txheej galvanized raug puas tsuaj, zinc kuj tseem yuav ua haujlwm ua lub anode sacrificial los tiv thaiv cov hlau ntawm corrosion. Cov kev tshawb fawb tau qhia tias qhov kev tiv thaiv corrosion ntawm cov txheej galvanized tuaj yeem ncav cuag ntau xyoo, thiab nws qhov kev xeb hauv qhov chaw ib puag ncig dav dav tsuas yog li 1/10 ntawm cov hlau ib txwm muaj.
Cov nyhuv ntawm cov txheej txheem galvanizing rau kev tiv thaiv corrosion: Cov txheej txheem galvanizing feem ntau suav nrog kub-dip galvanizing, electrogalvanizing, thiab lwm yam. Cov txheej zinc tsim los ntawm kub-dip galvanizing yog tuab dua thiab muaj kev tiv thaiv corrosion zoo dua, tab sis qee qhov tsis sib xws yuav tshwm sim ntawm qhov chaw. Electrogalvanizing tuaj yeem tswj qhov tuab ntawm cov txheej zinc kom ua rau qhov chaw sib xws thiab du. Piv txwv li, los ntawm kev siv cov txheej txheem electrogalvanizing, qhov tuab ntawm cov txheej zinc tuaj yeem tswj tau ntawm 5-15μm, thiab nws qhov kev tiv thaiv corrosion yog sib piv rau qhov ntawm kub-dip galvanizing, thiab qhov zoo ntawm qhov chaw zoo dua, uas yog qhov tsim nyog rau cov khoom siv roller saw nrog qhov xav tau siab ntawm qhov chaw.
Kev saib xyuas thiab kev ceev faj ntawm cov txheej galvanized: Cov txheej galvanized yuav tsum tau saib xyuas thaum lub sijhawm siv kom tsis txhob muaj kev puas tsuaj rau cov khoom siv. Yog tias cov txheej galvanized puas lawm, nws yuav tsum tau kho kom raws sijhawm kom tiv thaiv cov hlau kom tsis txhob raug rau cov tshuaj corrosive. Tsis tas li ntawd, nyob rau hauv qee qhov chaw tshwj xeeb, xws li cov chaw muaj zog acidic lossis alkaline, qhov kev tiv thaiv corrosion ntawm cov txheej galvanized yuav raug cuam tshuam rau qee qhov, thiab nws yog qhov tsim nyog los xaiv cov txheej txheem galvanizing tsim nyog thiab cov kev ntsuas tiv thaiv tom qab raws li qhov chaw tshwj xeeb.
2.2 Kev kho mob nickel plating
Kev plating nickel yog lwm txoj hauv kev zoo los txhim kho kev tiv thaiv xeb ntawm cov hlau roller saw hlau. Cov txheej txheej nickel muaj kev tiv thaiv xeb zoo thiab kev hnav tsis kam.
Kev tiv thaiv xeb ntawm nickel plating: Nickel muaj cov khoom siv hluav taws xob ruaj khov thiab tuaj yeem tsim cov zaj duab xis passivation ruaj khov hauv ntau cov xov xwm corrosive, yog li ua kom zoo tiv thaiv cov xov xwm corrosive los ntawm kev sib cuag nrog cov hlau. Kev tiv thaiv xeb ntawm nickel plating txheej zoo dua li ntawm zinc plating txheej, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj chloride ions, thiab nws qhov kev tiv thaiv pitting yog muaj zog dua. Piv txwv li, nyob rau hauv ib puag ncig dej hiav txwv uas muaj chloride ions, lub neej tiv thaiv xeb ntawm nickel plating txheej yog 3-5 npaug ntawm zinc plating txheej.
Cov txheej txheem plating nickel thiab nws qhov cuam tshuam rau kev ua tau zoo: Cov txheej txheem plating nickel feem ntau suav nrog electroplating thiab tshuaj nickel plating. Cov txheej txheem nickel electroplated muaj qhov nyuaj siab thiab zoo hnav tsis kam, tab sis nws muaj qhov yuav tsum tau siab rau qhov tiaj tus ntawm qhov chaw substrate. Tshuaj nickel plating tuaj yeem tsim cov txheej txheem sib xws ntawm qhov chaw ntawm cov khoom tsis-conductive, thiab qhov tuab thiab cov khoom sib xyaw ntawm cov txheej txheem tuaj yeem hloov kho los ntawm cov txheej txheem. Piv txwv li, los ntawm kev siv cov txheej txheem tshuaj nickel plating, ib txheej nickel plating nrog qhov tuab ntawm 10-20μm tuaj yeem tsim rau ntawm qhov chaw ntawm cov hlau roller saw, thiab nws qhov nyuaj tuaj yeem ncav cuag ntau dua HV700, uas tsis tsuas yog muaj kev tiv thaiv corrosion zoo, tab sis kuj muaj kev tiv thaiv hnav zoo.
Kev siv thiab kev txwv ntawm nickel plating: Nickel plating yog siv dav hauv cov khoom siv roller saw hlau uas muaj qhov xav tau siab rau kev tiv thaiv corrosion thiab hnav tsis kam, xws li hauv kev lag luam tshuaj lom neeg, kev ua zaub mov thiab lwm yam lag luam. Txawm li cas los xij, cov txheej txheem nickel plating yog qhov nyuaj thiab kim, thiab nyob rau hauv qee qhov muaj zog acid thiab alkali muaj zog, qhov kev tiv thaiv corrosion ntawm nickel plating txheej kuj tseem yuav raug txwv rau qee qhov. Tsis tas li ntawd, cov dej khib nyiab tsim tawm thaum lub sijhawm txheej txheem nickel plating yuav tsum tau kho kom nruj kom tsis txhob muaj kuab paug rau ib puag ncig.

3. Cov txheej txheem kho cua sov
3.1 Kev kho mob quenching thiab tempering
Kev kho cua sov thiab kev kho kom sov yog ib qho txheej txheem tseem ceeb rau kev kho cua sov ntawm cov khoom siv hlau roller. Los ntawm kev sib xyaw ua ke ntawm kev kho kom sov thiab kev kho kom sov kub, kev ua tau zoo ntawm cov hlau tuaj yeem txhim kho tau zoo heev, yog li ua rau nws tiv taus corrosion.
Lub luag haujlwm ntawm kev quenching thiab kev xaiv cov txheej txheem: Kev quenching tuaj yeem ua rau cov hlau txias sai, tsim cov qauv muaj zog xws li martensite, thiab txhim kho qhov nyuaj thiab lub zog ntawm cov hlau. Rau cov khoom siv raw ntawm cov hlau roller, cov khoom siv quenching feem ntau siv suav nrog roj thiab dej. Piv txwv li, rau qee cov hlau alloy nruab nrab-carbon, kev quenching roj tuaj yeem zam kev tsim cov kab nrib pleb quenching thiab tau txais qhov nyuaj dua. Kev xaiv qhov kub quenching yog qhov tseem ceeb, feem ntau ntawm 800 ℃ -900 ℃, thiab qhov nyuaj tom qab quenching tuaj yeem ncav cuag HRC45-55. Txawm hais tias qhov nyuaj ntawm cov hlau quenched yog siab, qhov kev ntxhov siab sab hauv yog loj thiab qhov tawv tsis zoo, yog li qhov kub siab tempering yog qhov yuav tsum tau ua kom zoo dua cov khoom no.
Kev ua kom zoo dua ntawm kev kub siab tempering: Kev kub siab tempering feem ntau yog ua tiav ntawm 500 ℃ -650 ℃, thiab lub sijhawm tempering feem ntau yog 2-4 teev. Thaum lub sijhawm tempering, qhov kev ntxhov siab seem hauv cov hlau raug tso tawm, qhov nyuaj txo qis me ntsis, tab sis qhov tawv tau zoo dua, thiab cov qauv troostite ruaj khov tuaj yeem tsim, uas muaj cov khoom siv kho tshuab zoo thiab tiv taus corrosion. Cov kev tshawb fawb tau qhia tias qhov kev tiv thaiv corrosion ntawm cov hlau tom qab quenching thiab tempering tuaj yeem txhim kho los ntawm 30% -50%. Piv txwv li, nyob rau hauv ib puag ncig huab cua kev lag luam, qhov corrosion ntawm cov khoom siv raw ntawm cov saw hlau uas tau quenched thiab tempered tsuas yog li 1/3 ntawm cov hlau tsis kho. Tsis tas li ntawd, quenching thiab tempering kuj tseem tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov hlau, uas yog qhov tseem ceeb rau kev siv ntev ntawm cov saw hlau hauv qab cov khoom thauj dynamic.
Lub tshuab ntawm kev cuam tshuam ntawm kev quenching thiab tempering rau kev tiv thaiv corrosion: Kev quenching thiab tempering txhim kho qhov microstructure ntawm cov hlau, txhim kho nws qhov nyuaj thiab toughness ntawm qhov chaw, thiab yog li ua rau nws muaj peev xwm tiv taus kev yaig los ntawm cov xov xwm corrosive. Ntawm ib sab tes, qhov nyuaj dua tuaj yeem txo qhov hnav ntawm cov khoom siv corrosive ntawm qhov chaw ntawm cov hlau thiab txo qhov corrosion rate; ntawm qhov tod tes, ib qho kev teeb tsa ruaj khov tuaj yeem qeeb qhov diffusion ntawm cov khoom siv corrosive thiab ncua qhov tshwm sim ntawm cov tshuaj tiv thaiv corrosion. Tib lub sijhawm, kev quenching thiab tempering kuj tseem tuaj yeem txhim kho cov hlau tiv thaiv rau hydrogen embrittlement. Hauv qee qhov chaw corrosive uas muaj hydrogen ions, nws tuaj yeem tiv thaiv cov hlau kom tsis txhob ua haujlwm ua ntej vim hydrogen embrittlement.

4. Kev Tshuaj Xyuas Zoo
4.1 Txoj Kev Ntsuas Kev Tiv Thaiv Kev Xeb
Qhov kev sim tiv thaiv corrosion ntawm cov khoom siv raw ntawm cov saw hlau yog qhov txuas tseem ceeb hauv kev ua kom nws zoo. Los ntawm kev tshawb fawb thiab kev sim tsim nyog, qhov kev tiv thaiv corrosion ntawm cov khoom siv hauv ntau qhov chaw sib txawv tuaj yeem soj ntsuam tau raug, yog li muab kev lees paub rau kev ntseeg siab ntawm cov khoom.
1. Kev Ntsuas Tshuaj Ntswg
Kev ntsuam xyuas ntsev tsuag yog ib txoj kev ntsuam xyuas xeb sai uas ua qauv dej hiav txwv lossis ib puag ncig noo noo thiab siv dav los ntsuas qhov kev tiv thaiv xeb ntawm cov khoom siv hlau.
Txoj Cai Ntsuas: Cov qauv saw hlau raug muab tso rau hauv chav kuaj ntsev kom qhov chaw kuaj ntawd raug rau qee qhov concentration ntawm ntsev tsuag ib puag ncig. Cov chloride ions hauv ntsev tsuag yuav ua kom cov tshuaj tiv thaiv xeb ntawm qhov chaw hlau sai dua. Qhov kev tiv thaiv xeb ntawm cov qauv raug soj ntsuam los ntawm kev soj ntsuam qib ntawm kev xeb ntawm cov qauv hauv ib lub sijhawm. Piv txwv li, raws li tus qauv thoob ntiaj teb ISO 9227, kev sim ntsev tsuag nruab nrab yog ua nrog ntsev tsuag concentration ntawm 5% NaCl kua, qhov kub thiab txias tswj tau ntawm kwv yees li 35 ° C, thiab lub sijhawm kuaj feem ntau yog 96 teev.
Kev Ntsuam Xyuas Cov Txiaj Ntsig: Kev tiv thaiv xeb yog ntsuas raws li cov cim qhia xws li cov khoom xeb, qhov tob ntawm qhov pitting, thiab qhov nrawm ntawm qhov xeb ntawm qhov chaw kuaj. Rau cov saw hlau tsis xeb, tom qab 96-teev kev sim ntsev tsuag, qhov tob ntawm qhov pitting ntawm qhov chaw yuav tsum tsawg dua 0.1 hli thiab qhov nrawm ntawm qhov xeb yuav tsum tsawg dua 0.1 hli / xyoo kom ua tau raws li qhov yuav tsum tau siv ntawm cov chaw ua haujlwm dav dav. Rau cov saw hlau sib xyaw, tom qab galvanizing lossis nickel plating, cov txiaj ntsig ntawm kev sim ntsev tsuag yuav tsum ua tau raws li cov qauv siab dua. Piv txwv li, tom qab 96-teev kev sim ntsev tsuag, cov saw hlau nickel-plated tsis muaj xeb pom tseeb ntawm qhov chaw thiab qhov tob ntawm qhov pitting tsawg dua 0.05 hli.
2. Kev sim tshuaj electrochemical
Kev kuaj electrochemical tuaj yeem muab kev nkag siab tob dua txog kev tiv thaiv corrosion ntawm cov ntaub ntawv los ntawm kev ntsuas tus cwj pwm electrochemical ntawm cov hlau hauv cov xov xwm corrosive.
Kev ntsuam xyuas kab polarization: Cov qauv saw hlau siv ua lub electrode ua haujlwm thiab muab tso rau hauv cov khoom siv corrosive (xws li 3.5% NaCl kua lossis 0.1mol / L H₂SO₄ kua), thiab nws cov kab polarization raug kaw los ntawm lub chaw ua haujlwm electrochemical. Cov kab polarization tuaj yeem cuam tshuam cov yam ntxwv xws li qhov ceev tam sim no corrosion thiab qhov muaj peev xwm corrosion ntawm cov khoom siv. Piv txwv li, rau 316 stainless hlau saw hlau, qhov ceev tam sim no corrosion hauv 3.5% NaCl kua yuav tsum tsawg dua 1μA / cm², thiab qhov muaj peev xwm corrosion yuav tsum ze rau -0.5V (piv rau saturated calomel electrode), uas qhia tau tias nws muaj kev tiv thaiv corrosion zoo.
Kev ntsuas electrochemical impedance spectroscopy (EIS): Kev ntsuas EIS tuaj yeem ntsuas qhov them hloov impedance thiab diffusion impedance ntawm cov khoom siv hauv cov khoom siv corrosive los ntsuas qhov kev ncaj ncees thiab kev ruaj khov ntawm nws cov zaj duab xis saum npoo. Qhov kev tiv thaiv corrosion ntawm cov khoom siv tuaj yeem txiav txim siab los ntawm kev tshuaj xyuas cov txheej txheem xws li capacitive arc thiab lub sijhawm tas mus li hauv impedance spectrum. Piv txwv li, qhov them hloov impedance ntawm cov hlau roller saw hlau uas tau quenched thiab tempered yuav tsum ntau dua 10⁴Ω·cm² hauv kev xeem EIS, uas qhia tau tias nws cov zaj duab xis saum npoo muaj kev tiv thaiv zoo.
3. Kev sim dej
Qhov kev sim raus dej yog ib txoj kev sim xeb uas ua qauv qhov chaw siv tiag tiag. Cov qauv saw hlau raug raus rau hauv ib qho chaw xeb tshwj xeeb rau lub sijhawm ntev kom pom nws tus cwj pwm xeb thiab kev hloov pauv ntawm kev ua haujlwm.
Cov xwm txheej sim: Xaiv cov khoom siv corrosive raws li qhov chaw siv tiag tiag ntawm cov saw hlau, xws li cov kua qaub (sulfuric acid, hydrochloric acid, thiab lwm yam), cov kua alkaline (sodium hydroxide, thiab lwm yam) lossis cov kua nruab nrab (xws li dej hiav txwv). Qhov kub sim feem ntau raug tswj hwm ntawm qhov kub thiab txias hauv chav lossis qhov kub siv tiag tiag, thiab lub sijhawm sim feem ntau yog ob peb lub lis piam mus rau ob peb lub hlis. Piv txwv li, rau cov saw hlau siv hauv cov chaw tshuaj lom neeg, lawv raug muab tso rau hauv 3% H₂SO₄ kua ntawm 40 ° C rau 30 hnub.
Kev tshuaj xyuas cov txiaj ntsig: Kev tiv thaiv xeb yog ntsuas los ntawm kev ntsuas cov ntsuas xws li kev poob phaus, kev hloov pauv qhov loj me, thiab kev hloov pauv khoom siv ntawm cov qauv. Tus nqi poob phaus yog qhov qhia tseem ceeb los ntsuas qib kev xeb. Rau cov saw hlau tsis xeb, tus nqi poob phaus tom qab 30 hnub ntawm kev sim immersion yuav tsum tsawg dua 0.5%. Rau cov saw hlau alloy, tus nqi poob phaus yuav tsum tsawg dua 0.2% tom qab kev kho saum npoo. Tsis tas li ntawd, kev hloov pauv ntawm cov khoom siv xws li lub zog tensile thiab qhov nyuaj ntawm cov qauv kuj tseem yuav tsum tau sim kom ntseeg tau tias nws tseem tuaj yeem ua tau raws li qhov yuav tsum tau siv hauv qhov chaw corrosive.
4. Kev sim dai ntawm qhov chaw
Qhov kev sim dai ntawm qhov chaw yog kom ncaj qha nthuav tawm cov qauv saw hlau rau qhov chaw siv tiag tiag thiab ntsuas qhov kev tiv thaiv corrosion los ntawm kev soj ntsuam nws qhov corrosion rau lub sijhawm ntev.
Kev npaj sim: Xaiv ib qho chaw siv tiag tiag uas sawv cev rau, xws li lub chaw ua haujlwm tshuaj lom neeg, lub platform hauv hiav txwv, lub Hoobkas ua zaub mov, thiab lwm yam, thiab dai lossis kho cov qauv saw hlau rau ntawm cov khoom siv ntawm lub sijhawm. Lub sijhawm sim feem ntau yog ob peb lub hlis txog ob peb xyoos kom ntseeg tau tias tus cwj pwm xeb ntawm cov qauv hauv qhov chaw ib puag ncig tiag tiag tuaj yeem pom tag nrho.
Kev sau thiab tshuaj xyuas cov txiaj ntsig: Soj ntsuam thiab sim cov qauv tsis tu ncua, thiab sau cov ntaub ntawv xws li kev xeb ntawm qhov chaw thiab cov khoom xeb. Piv txwv li, hauv ib puag ncig kev ua haujlwm tshuaj lom neeg, tom qab 1 xyoos ntawm kev sim dai, tsis muaj qhov cim xeb pom tseeb ntawm qhov chaw ntawm cov saw hlau nickel-plated, thaum me ntsis ntawm cov pitting yuav tshwm sim ntawm qhov chaw ntawm cov saw hlau galvanized. Los ntawm kev sib piv qhov xeb ntawm cov qauv ntawm cov ntaub ntawv sib txawv thiab cov txheej txheem kho hauv qhov chaw tiag tiag, nws qhov kev tiv thaiv xeb tuaj yeem ntsuas tau zoo dua, muab lub hauv paus tseem ceeb rau kev xaiv cov khoom siv thiab tsim cov khoom.

5. Kev Txheeb Xyuas
Kev xyuas kom meej tias cov khoom siv raw ntawm cov saw hlau tsis kam xeb yog ib qho project uas muaj ntau yam kev sib txuas xws li kev xaiv cov khoom siv, kev kho qhov chaw, kev kho cua sov thiab kev tshuaj xyuas zoo nruj. Los ntawm kev xaiv cov khoom siv hlau uas muaj zog tiv taus xeb, xws li hlau tsis xeb thiab hlau alloy, thiab kev sib xyaw ua ke ntawm cov txheej txheem kho qhov chaw xws li galvanizing thiab nickel plating, qhov kev tiv taus xeb ntawm cov saw hlau tuaj yeem txhim kho tau zoo heev. Kev kho quenching thiab tempering hauv cov txheej txheem kho cua sov ntxiv txhim kho kev ua tau zoo ntawm cov hlau los ntawm kev ua kom zoo dua cov kev ntsuas quenching thiab tempering, yog li nws muaj kev tiv taus xeb zoo dua thiab cov khoom siv kho tshuab hauv cov chaw nyuaj.
Hais txog kev tshuaj xyuas zoo, kev siv ntau txoj kev sim xws li kev sim ntsev tsuag, kev sim electrochemical, kev sim immersion thiab kev sim dai ntawm qhov chaw muab lub hauv paus kev tshawb fawb rau kev ntsuam xyuas tag nrho qhov kev tiv thaiv corrosion ntawm cov khoom siv raw. Cov txheej txheem sim no tuaj yeem ua piv txwv qhov chaw siv tiag tiag sib txawv thiab ntes tau qhov kev hloov pauv corrosion thiab kev ua tau zoo ntawm cov ntaub ntawv nyob rau hauv ntau yam mob, yog li ua kom ntseeg tau tias qhov kev ntseeg tau thiab kev ruaj khov ntawm cov khoom hauv kev siv tiag tiag.
Feem ntau, los ntawm kev sib koom tes ua kom zoo ntawm cov kev sib txuas saum toj no, qhov kev tiv thaiv corrosion ntawm cov khoom siv raw cov menyuam tuaj yeem txhim kho tau zoo, nws lub neej kev pabcuam tuaj yeem ntev dua, thiab cov kev xav tau siv hauv ntau qhov chaw lag luam tuaj yeem ua tau raws li.