Qhov Sib Txawv Ntawm Cov Yeeb Nkab Quav Yeeb Yaj Yooj Yim Thiab Cov Kav Hlau Caj Qaum Hlau Zoo Nkauj

1. Cov raj xa dej txias yuav ua rau cov khoom tawg ua kom tawg thiab lwm yam kab mob me me thiab ua rau muaj qhov chaw ntawm lub ntsej muag, thiab ua rau cov kev hloov pauv martensite thiab cov nag lossis daus carbide. Piv txwv li, austenitic steel ua kom pom qhov nce ntawm cov khoom sib nqus tom qab ua haujlwm txias.

2. Qhov kev tshem tawm lossis theem hloov ntawm cov khoom siv ntoo teeb meem tshwm sim rau saum npoo, uas yuav dhau los ua qhov pib ntawm chaw hauv zos xws li pitting corrosion. Qhov tshwm sim ntawm cov kav dej txias yuav muaj qhov cuam tshuam ncaj qha thaum qhov degree ntawm deformation ncav cuag 20% ​​rho tawm ntu ntu.

3. Lub yeeb txias txias yuav cia cov kev ntxhov siab nyob hauv cov khoom siv tom qab txias, uas tsis tshua zoo siab rau qhov kev ntxhov siab corrosion cracking tsis kam ntawm cov khoom siv. Ib theem ntawm kev ua haujlwm txias ntawm cov khaub thuas sib twv cov yeeb nkab txias yuav ua rau SCC rhiab heev ntawm cov khaub thuas kos cov yeeb nkab steel txias.

4. Qhov ntsuas txias ua haujlwm tseem muaj qhov tsis zoo ntawm qhov siab kub ua haujlwm ntawm qhov txias txias kos cov kav hlau. Feem ntau, qhov siab dua rau kev ua haujlwm kub lossis ua haujlwm siab dua lub neej ntawm cov kav dej txias txias, qis dua qib siab uas tau tso cai ntawm kev ua haujlwm txias.

Qhov sib txawv ntawm cov yeeb nkab txias txias thiab cov kav hlau tsis sib xws:

1. Lub ntsiab tseem ceeb ntawm cov hlau tsis xeb hlau txuas nrog yog tias lawv tsis muaj qhov txuas welded thiab tuaj yeem tiv taus lub siab ntau dua. Cov khoom yuav tuaj yeem ntxhib los yog kos cov qhov txias.

2. Cov kav dej txias yog cov khoom lag luam uas tau tshwm sim nyob rau hauv xyoo tas los, feem ntau vim tias sab hauv lub qhov taub thiab sab hauv phab ntsa muaj qhov ua kom nruj thiab tawv.

Cov khaub thuas tuaj yeem coj cov tub ntxhais rov qab yog txhawm rau ua kom cov cab nrog 6mol / L hydrochloric acid rau 2 teev lossis cua sov thiab tsau nrog cov kua nyeem nrog hydrochloric acid rau 30 feeb, lim, ntxuav nrog dej kom zoo, thiab ua kom qhuav. Pickling tuaj yeem tshem tawm cov hlau, txhuas, calcium, magnesium thiab lwm yam tsis txaus ntawm lub nplaim, tab sis tsis muaj silanol pawg. Tus kws tsav tsheb pickling yog tsim nyog rau kev kuaj acidic.

Degrease thiab xeb saum npoo ntawm precision ntom nti cov kav hlau los npaj rau txheej txheem tom ntej. Hauv cov txheej txheem ntau lawm, txheej txheem pickling yog tshem tawm cov txheej txheem oxide saum npoo, tom qab ntawd mus dhau kev kho lubrication, thiab tom qab ntawd nqa tawm cov txheej txheem sib sib zog nqus.

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