Hauv kev lag luam cam khwb cia hlau, qee qhov nyiaj ntawm inoculant yog qhov tseem ceeb ntxiv rau cov hlau molten ua ntej nchuav los hloov cov txheej txheem solidification ntawm cov hlau molten thiab txhim kho cov qauv cam khwb cia, yog li txhim kho kev ua haujlwm ntawm casting.
Cov haujlwm ntawm inoculants hauv cam khwb cia hlau yog raws li nram no:
1. Ua kom muaj zog graphitization core, refine cov graphite, txhawb kom tau txais A-type graphite hauv grey hlau castings, thiab txhim kho lub zog. Rau ductile hlau castings, nws muaj peev xwm ua rau cov graphite nyob rau hauv ductile hlau zoo thiab puag ncig, thiab txhim kho spheroidization theem.
2. Nws tuaj yeem txo qis qis qis ntawm cov hlau molten, txhawb cov nag lossis daus ntawm graphite, txo qhov nyiam ntawm cov pob dawb, txo cov txheeb ze hardness, thiab txhim kho qhov kev ua tau zoo ntawm cov castings.
3. Muaj peev xwm tiv thaiv kev poob qis. Lub sijhawm tiv thaiv kev lag luam yog ob zaug ntawm 75 silicon. Qhov sib ntxiv ntawm barium silicon inoculant tsawg dua ib nrab ntawm 75 ferrosilicon inoculant, thaum tiv thaiv kev cuam tshuam spheroidization kev lag luam.
4. Tsawg phab ntsa thickness rhiab heev, txhim kho cov ntoo khaub lig-section uniformity, thiab txo shrinkage thiab porosity tendencies
5. Cov tshuaj muaj pes tsawg leeg yog qhov ruaj khov, kev ua cov khoom me me yog qhov sib xws, thiab muaj pes tsawg leeg thiab qhov sib txawv me me.
6. Tsawg melting point (tsawg dua 1300 degree), yooj yim rau nqus tau yaj thaum lub sij hawm inoculation kho, thiab tsawg heev scum.
