(1) Kub-mould gravity casting txoj kev muaj xws li hauv qab no:
Qhov no yog txoj kev siv ntau tshaj plaws casting, qhov twg lub plhaub pwm raug tshem tawm ntawm lub qhov cub thiab tom qab ntawd nchuav rau ntawm qhov kub thiab txias. Cov hlau txias maj mam nyob rau hauv lub plhaub pwm, tso cai rau nws sau cov pwm nrog fluidity siab, yog li xyuas kom cov casting yog replicates cov duab ntawm kab noj hniav thiab txhim kho nws precision. Txawm li cas los xij, qhov txias qeeb hauv cov pwm kub ua rau cov hmoov nplej ntxhib, txo cov khoom siv hluav taws xob. Thaum nrum carbon steel, qhov qeeb - txias saum npoo kuj ua rau oxidation thiab decarburization, txo cov tawv tawv, smoothness, thiab qhov tseeb.
(2) Lub tshuab nqus tsev nqus casting
Lub plhaub pwm yog muab tso rau hauv lub tshuab nqus tsev casting, thiab cov roj hauv cov kab noj hniav yog nqus tawm los ntawm cov pores me me hauv lub plhaub, tso cai rau cov kua hlau ua kom zoo dua cov kab noj hniav, rov ua dua nws cov duab, txhim kho casting precision, thiab tiv thaiv qhov tsis xws luag xws li porosity thiab tsis tiav filling. Txoj kev no tau siv rau txawv teb chaws.
(3) Crystallization nyob rau hauv siab
Lub plhaub pwm yog muab tso rau hauv lub nkoj siab rau casting. Tom qab casting, lub nkoj siab tau raug kaw tam sim ntawd, thiab siab - cua siab lossis roj inert yog nkag rau hauv lub nkoj kom solidify lub casting nyob rau hauv siab, yog li nce nws ceev. Qhov siab tshaj plaws txawv teb chaws tau mus txog 150 atm.
(4) Directional Crystallization (Directional Solidification)
Rau qee qhov kev nqis peev castings, xws li turbine hniav thiab hlau nplaum, yog tias lawv cov qauv crystalline muaj cov kab nrib pleb hauv ib qho kev taw qhia, lawv cov kev ua tau zoo tuaj yeem txhim kho tau zoo. Yog li ntawd, directional crystallization technology nyob rau hauv peev casting yog sai tsim.
