Lub hom phiaj tseem ceeb ntawm kev kho deg ntawm hmoov metallurgy qhov chaw:
1. Txhim kho hnav tsis kam
2. Txhim kho corrosion kuj
3. Txhim kho kev qaug zog

Txoj kev kho saum npoo siv rau cov hmoov metallurgy qhov chaw tuaj yeem muab faib ua tsib pawg hauv qab no:
1. Txheej: Npog qhov chaw ntawm cov txheej txheem ua tiav nrog ib txheej ntawm lwm cov ntaub ntawv uas tsis muaj tshuaj lom neeg
2. Kev kho tshuaj deg: tshuaj lom neeg cov tshuaj tiv thaiv ntawm qhov chaw ntawm cov txheej txheem ua tiav thiab sab nraud reactant
3. Kev kho cua sov: lwm yam khoom xws li C thiab N diffuse rau saum npoo ntawm qhov ua tiav
4. Kev kho cua sov saum npoo: cov theem hloov pauv yog tsim los ntawm kev hloov pauv ntawm qhov kub thiab txias, uas hloov cov microstructure ntawm qhov chaw ua haujlwm.
5. Mechanical deformation method: los tsim cov tshuab deformation ntawm qhov chaw ua haujlwm, feem ntau yog tsim cov compressive residual kev ntxhov siab, thaum tseem ua rau qhov ntom ntom.

Ⅰ.Txheej
Electroplating tuaj yeem siv rau cov hmoov metallurgy qhov chaw, tab sis nws tsuas yog ua tau tom qab cov hmoov metallurgy qhov chaw raug pretreated (xws li dipping tooj liab los yog dipping ciab rau kaw qhov) kom tiv thaiv kev nkag mus ntawm electrolyte.Tom qab kev kho electroplating, qhov corrosion kuj ntawm cov khoom feem ntau tuaj yeem txhim kho.Feem ntau cov piv txwv yog galvanizing (rov siv chromate rau passivation tom qab galvanizing kom tau ib tug dub los yog tub rog ntsuab ci ntsa iab nto) thiab npib tsib xee plating
Electroless npib tsib xee plating yog superior rau electrolytic npib tsib xee plating nyob rau hauv tej yam, xws li tswj lub thickness ntawm txheej thiab plating efficiency.
Txoj kev "qhuav" zinc txheej tsis tas yuav tsum tau ua thiab tsis tas yuav tsum tau muab kaw.Nws muab faib ua hmoov galvanizing thiab mechanical galvanizing.
Thaum tiv thaiv xeb, tiv thaiv corrosion, zoo nkauj tsos thiab hluav taws xob rwb thaiv tsev yuav tsum tau, painting yuav siv tau.Cov txheej txheem tuaj yeem muab faib ntxiv rau hauv: txheej yas, glazing, thiab hlau txau.

Ⅱ.Kev kho tshuaj deg

Chav kho yog feem ntau ntawm tag nrho cov txheej txheem kho saum npoo rau hmoov metallurgy qhov chaw.Kev kho chav dej yog ua kom sov cov khoom mus rau 530-550 ° C nyob rau hauv chav cua kom tsim cov hlau nplaum (Fe3O4) txheej txheej.Los ntawm oxidation ntawm qhov chaw ntawm cov hlau matrix, qhov hnav tsis kam thiab kev sib txhuam cov khoom zoo tuaj, thiab cov khoom siv tiv thaiv xeb (ntxiv ntxiv dag zog los ntawm cov roj immersion) Cov oxide txheej yog li 0.001-0.005mm tuab, npog tag nrho cov txheej txheem sab nrauv. , thiab muaj peev xwm diffuse mus rau qhov chaw ntawm ib feem los ntawm interconnected pores.Lub filling ntawm no pore tsub kom lub meej hardness, yog li txhim kho lub hnav tsis kam thiab ua kom nws muaj ib tug nruab nrab ntawm compaction.

Kev kho mob phosphate txias yog cov tshuaj tiv thaiv hauv cov ntsev da dej kom tsim cov phosphate nyuaj rau ntawm qhov chaw ua haujlwm.Zinc phosphate yog siv rau pretreatment ntawm coatings thiab yas coatings, thiab manganese phosphate yog siv rau kev sib txhuam daim ntaub ntawv.

Lub bluing yog ua los ntawm kev tso lub workpiece nyob rau hauv ib tug poov tshuaj chlorate da dej ntawm 150 ° C los ntawm tshuaj corrosion.Qhov saum npoo ntawm lub workpiece muaj xim xiav tsaus.Lub thickness ntawm lub bluing txheej yog hais txog 0.001mm.Tom qab bluing, qhov saum npoo ntawm qhov chaw zoo nkauj thiab muaj kev tiv thaiv xeb.

Nitriding xim siv ntub nitrogen ua cov oxidant.Thaum lub sij hawm txias ntawm lub workpiece tom qab sintering, ib txheej oxide yog tsim nyob rau hauv qhov kub ntawm 200-550 ° C.Cov xim ntawm cov txheej txheem oxide hloov nrog kev ua haujlwm kub.

Anodized anti-corrosion kho yog siv rau txhuas-raws li qhov chaw los txhim kho nws cov tsos thiab kev tiv thaiv corrosion.

Passivation kev kho mob yog siv rau stainless hlau qhov chaw, feem ntau yog tsim ib tug nto oxide tiv thaiv txheej.Cov oxides no tuaj yeem tsim los ntawm cua sov lossis los ntawm kev siv tshuaj, uas yog, soaking nrog nitric acid los yog sodium chlorate tov.Txhawm rau tiv thaiv kev daws teeb meem los ntawm immersing, tshuaj Cov txheej txheem yuav tsum tau ua ntej-sealing ciab kho.