mankhwala pamwamba kutentha mankhwala
Kuchiza kutentha kwa Chemical ndi njira yochizira kutentha komwe workpiece imayikidwa mu sing'anga yeniyeni yowotchera ndi kuteteza kutentha, kotero kuti maatomu ogwira ntchito omwe ali mkatikati amalowa mumtunda wa workpiece, potero amasintha kapangidwe ka mankhwala ndi kapangidwe kake. pamwamba wosanjikiza workpiece, ndiyeno kusintha ntchito yake. Chithandizo cha kutentha kwa mankhwala ndi imodzi mwa njira zopezera kulimba kwa pamwamba, zolimba komanso zomangira. Poyerekeza ndi kuzimitsa pamwamba, mankhwala kutentha mankhwala osati kusintha kapangidwe pamwamba zitsulo, komanso amasintha mankhwala ake. Malingana ndi zinthu zosiyanasiyana zomwe zimalowetsedwa, chithandizo cha kutentha kwa mankhwala chikhoza kugawidwa mu carburizing, nitriding, multi-infiltration, kulowetsa zinthu zina, ndi zina zotero. Njira yothetsera kutentha kwa mankhwala imaphatikizapo njira zitatu zofunika: kuwonongeka, kuyamwa, ndi kufalikira.
Nthawi zambiri amagwiritsidwa ntchito pochiza kutentha kwa mankhwala:
Carburizing, nitriding (yomwe imadziwika kuti nitriding), carbonitriding (yomwe imadziwika kuti cyanidation ndi nitriding yofewa), etc. Sulfurizing, boronizing, aluminizing, vanadizing, chromizing, etc.
zokutira zitsulo
Kupaka chitsulo chimodzi kapena zingapo pamwamba pa zinthu zoyambira zimatha kusintha kwambiri kukana kwake, kukana dzimbiri ndi kukana kutentha, kapena kupeza zinthu zina zapadera. Pali electroplating, mankhwala plating, composite plating, infiltration plating, otentha dip plating, vacuum evaporation, kupopera plating, ion plating, sputtering ndi njira zina.
Kupaka kwa Metal Carbide - Kuyika kwa Nthunzi
Ukadaulo woyikapo nthunzi umatanthawuza ukadaulo watsopano wopaka utoto womwe umayika zinthu zokhala ndi nthunzi pamwamba pa zinthu pogwiritsa ntchito njira zakuthupi kapena zamankhwala kuti apange makanema owonda.
Malingana ndi mfundo ya ndondomeko yoyikapo, ukadaulo wa vapor deposition ukhoza kugawidwa m'magulu awiri: physical vapor deposition (PVD) ndi chemical vapor deposition (CVD).
Physical Vapor Deposition (PVD)
Kuyika kwa nthunzi pathupi kumatanthawuza ukadaulo momwe zinthu zimasinthidwa kukhala maatomu, mamolekyu kapena ma ionized ma ion ndi njira zakuthupi pansi pa vacuum, ndipo filimu yopyapyala imayikidwa pamwamba pa zinthuzo kudzera munjira ya gasi.
Ukadaulo woyika thupi umaphatikizapo njira zitatu zoyambira: vacuum evaporation, sputtering, ndi plating ion.
Kuyika kwa nthunzi wakuthupi kumakhala ndi zida zambiri zogwiritsira ntchito gawo lapansi ndi filimu; ndondomekoyi ndi yosavuta, yopulumutsa zinthu, komanso yopanda kuipitsa; filimu yomwe yapezedwa ili ndi ubwino womatira mwamphamvu ku maziko a filimu, makulidwe a filimu yofanana, kuphatikizika, ndi mapini ochepa.
Chemical Vapor Deposition (CVD)
Kuyika kwa nthunzi wa mankhwala kumatanthawuza njira yomwe mpweya wosakanikirana umayenderana ndi pamwamba pa gawo lapansi pa kutentha kwina kuti apange filimu yachitsulo kapena yowonjezera pamwamba pa gawo lapansi.
Chifukwa filimu yoyika mpweya wamankhwala imakhala ndi kukana kwabwino, kukana kwa dzimbiri, kukana kutentha ndi magetsi, kuwala ndi zinthu zina zapadera, yakhala ikugwiritsidwa ntchito kwambiri popanga makina, zakuthambo, zoyendera, mafakitale amafuta a malasha ndi mafakitale ena.
