1. Casting tawg
Vim yog cov txheej txheem nyuaj thiab tuab tuab ntawm cov casting, qhov txias txias ntawm txhua feem tsis sib xws thaum ua kom khov, ua rau muaj kev ntxhov siab sab hauv. Thaum qhov kev nyuab siab tshaj li lub zog tensile ntawm cov khoom siv hlau, cov casting raug rub sib nrug.
Cov kab nrib pleb tuaj yeem muab faib ua cov kab nrib pleb thiab tawg txias. Qhov tawg tawg yog intergranular tawg, nrog oxidation dub, cov duab tsis xwm yeem thiab sawtooth zoo; Qhov txias txias yog qhov sib tawg tawg, qhov tawg tsis tau oxidized, thiab nws yog cov nyiaj tsis tuaj yeem thiab ci.
Txheej txheem ntsuas kom tshem tawm cov kab nrib pleb: cov tshuaj lom neeg muaj pes tsawg ntawm cov hlau yuav tsum raug thiab cov ntsiab lus tsis huv yuav tsum tsis pub dhau tus qauv; Tsis txhob Melt Overheating thiab nyob hauv lub cub tawg ntev; Tsim kev tshawb fawb thiab tsim nyog ntsuas kub thiab ua kom nrawm; Cov hlau ua kua thiab txias yuav tsum zoo ib yam; Tiv thaiv kev suav nrog txawv teb chaws los ntawm kev poob rau hauv qhov yaj, thiab lwm yam.
2. Cov ntaub so ntswg
Cov ciam ciam av yog ntais, sawtooth thiab tawg kab hlua, uas zoo ib yam rau cov menyuam ntxaib, feem ntau zoo li cov plaub. Lub microstructure yog sib luag rau ib leeg thiab hauv nyias flakes. Nws tshwm sim los ntawm kev hloov kho tsis raug ntawm cov tshuaj muaj pes tsawg leeg, ua kom sov ntau dhau thiab lub sijhawm nyob ntev dhau lawm, lub taub zoo dhau ntawm lub qhov lim dej lub qhov, qhov kub siab rau casting ntau dhau, tsis tshua muaj crystallizer thiab tsis ua haujlwm ntawm metamorphic refiner.
Kev ntsuas kom tshem tawm cov hlua zoo li cov qauv: nruj tswj hwm cov tshuaj muaj pes tsawg leeg thiab cov ntsiab lus tsis huv ntawm cov hlau, thiab yuav tsum tsis pub dhau tus qauv; Kev tshawb fawb thiab tsim nyog tsim cov txheej txheem lim dej thiab cov cuab yeej siv crystallization; Ua kom raug tswj qhov kub thiab txias lub sijhawm pov tseg thiab raug; Ntxiv cov txheej txheem metamorphic refiner, thiab lwm yam.
3. Lub ci ci
Thaum cov khoom tsis zoo siv nrog cov ntsiab lus tsis tshua muaj cov ntsiab lus tshwm hauv qhov casting, cov nplej yog ntxhib, lub dendritic network yog nyias thiab ci, thiab qhov nyuaj yog qis dua li ntawm cov qauv ib txwm muaj. Vim tias qhov ntsuas cua qis hauv qhov txheej txheem casting, thawj cov qauv siv lead ua ntawm cov khoom sib xyaw ua ke tau tsim nyob hauv qab, uas loj hlob tsis tu ncua raws li qhov sib xyaw ua thawj. Thaum qhov hnyav nce mus txog qib ib, cov nplej ci yuav tsim thiab lub zog thiab tawv ntawm cov hlau yuav raug txo.
Kev tiv thaiv kev tiv thaiv: cov khoom siv ua kom muaj cua sov ua kom zoo, qhov saum npoo yuav tsum ci, qhov siab los ntawm lub qhov taub mus rau hauv qab yuav tsum yog nruab nrab, thiab txheej txheej txheej yuav tsum zoo ib yam; Preheating funnel thiab sinking rau hauv cov hlau yaj yuav tsum tsis txhob tob dhau ua ntej nchuav; Kev tswj nruj ntawm qhov kub thiab txias ib yam thiab cov khoom ruaj khov ntawm cov kua txhuas tuaj yeem tshem tawm qhov tsis zoo ntawm qhov tsis xws luag ntawm kev pov.