Fluidized txaj hmoov txheej yog cov hmoov txheej uas yog siv nrog fluidized txaj system qhov twg cov hmoov av hmoov zoo raug tshem tawm hauv huab cua, thiab ib feem preheated yog dipped rau hauv cov hmoov tank. Lub melted hais fuse rau cov khoom, muab ib tug zoo ib yam, txawm tag rau hlau qhov chaw. Txoj kev no yog qhov zoo tshaj plaws raws li cov txheej txheem ua haujlwm los muab kev puas tsuaj, corrosion, thiab tshuaj tiv thaiv. Cov tuab tuab rau txoj kev no yog 200-2000μm thickness, tab sis hnyav dua tuaj yeem ua tiav.

Ib feem yog hmoov coated nrog fluidized txaj txheej mus rau hauv qab no steps.

1. Preheat

Cov hlau yuav tsum tau preheated hauv qhov cub kom 220-400 ℃. Qhov kub no siab tshaj qhov melting point ntawm cov kua txaj hmoov, thiab pab kom cov hmoov quenches los yog txias qhov tam sim ntawd.

2. Npog

Lub tshuab cua tshuab hauv qab cov hmoov tank tshuab cov hmoov nplej rau hauv lub xeev zoo li kua. Peb dipped qhov kub rau hauv lub txaj fluidized ntawm hmoov txheej thiab txav nws mus rau ib ntus txheej. Lub workpiece kawg thickness depends ntawm cov khoom cua sov ua ntej nws dipped nyob rau hauv lub tank thiab ntev npaum li cas nws nyob twj ywm nyob rau hauv lub kua txaj ntawm hmoov txheej.

4.Post-kub los kho

Cov theem kawg ntawm cov kua txaj hmoov txheej yog txheej txheem fuse kawg. Tom qab cov hmoov ntau dhau los ntawm cov khoom, nws txav mus rau qhov cub ntawm qhov kub qis kom kho. Tom qab cua sov yuav tsum nyob rau ntawm qhov kub qis dua li ntawm qhov cub preheated. Lub hom phiaj ntawm cov kauj ruam no yog kom paub tseeb tias tag nrho cov hmoov tau adhered rau ib feem thaum lub sij hawm dipping thiab melts mus rau hauv ib tug du, uniform txheej.

5. Cua txias

Tam sim no txav lub coated workpiece tawm ntawm qhov cub thiab txias nws nrog cua kiv cua los yog ntuj cua.

Fluidized txaj hmoov txheej muaj immersing ib tug kub workpiece mus rau hauv lub hmoov tank, cia cov hmoov yaj nyob rau hauv ib feem thiab tsim ib zaj duab xis, thiab tom qab ntawd muab lub sij hawm txaus thiab cua sov rau zaj duab xis no ntws mus rau hauv ib tug tas mus li txheej. Lub workpiece yuav tsum tau muab tso rau hauv lub txaj fluidized kom sai li sai tau tom qab tshem tawm ntawm lub qhov cub preheat kom tsis txhob poob ntawm qhov tsawg kawg nkaus. Lub sijhawm voj voog yuav tsum tau tsim los ua kom lub sijhawm no tsis tu ncua. Thaum nyob rau hauv cov hmoov, lub workpiece yuav tsum tau khaws cia nyob rau hauv lub zog kom cov hmoov txav mus rau qhov kub. Cov lus tsa suab rau ib feem depends ntawm nws configuration.

Kev txav tsis zoo los yog tsis txaus tuaj yeem ua rau muaj ntau yam teeb meem: pinholes, tshwj xeeb tshaj yog nyob rau hauv qab ntawm cov kab rov tav tiaj tus thiab ntawm cov xov hlau sib tshuam: "txiv kab ntxwv tev" zoo li; thiab tsis txaus kev pab them nqi ntawm cov ces kaum los yog crevices. Kev txav tsis zoo kuj tuaj yeem ua rau cov txheej tsis sib xws, xws li oval txheej ntawm cov xov hlau puag ncig. Lub sij hawm immersion ib txwm nyob rau hauv cov hmoov fluidized yog peb mus rau 20 vib nas this.

Cov hmoov ntau dhau yuav tsum tau muab tshem tawm tam sim tom qab txheej txhawm rau tiv thaiv kev tsim tawm ntau dhau. Qhov no tuaj yeem ua tiav nrog kev tawg ntawm huab cua los ntawm lub dav hlau tswj hwm huab cua, tapping lossis vibrating qhov, lossis tilting nws kom muab pov tseg ntau dhau. Yog tias cov hmoov ntau dhau tsis kis nrog lwm cov hmoov lossis av, nws tuaj yeem rov siv dua. Yog hais tias qhov seem muaj cov cua sov txaus, cov txheej yuav ntws tawm mus rau qib siab yam tsis muaj cua sov tom qab. Ntawm qhov chaw thinner, los yog qhov chaw kub nyhiab, yuav tsum tau muaj cua sov tom qab.