Silicon hlau hmoovyog ib qho additive siv los ua kom cov ntsiab lus silicon thaum ua casting alloys. Silicon yog ib qho tseem ceeb ntawm cov hlau uas muaj qhov cuam tshuam los ntawm kev txo cov ntsiab lus melting, nce lub zog thiab hardness, txhim kho hnav tsis kam, corrosion kuj, thiab txo thermal expansion coefficient. Yog li ntawd, silicon hlau hmoov yuav tsum tau ntxiv rau ntau casting alloys.
Qhov kev faib ua feem ntawm silicon hlau hmoov ntxiv
Qhov feem ntawm silicon hlau hmoov ntxiv nws txawv nyob ntawm seb hom alloy thiab nws lub hom phiaj. Nws feem ntau yog nruab nrab ntawm 1% thiab 10%. Cov hauv qab no yog qee qhov piv txwv:
1. Qhov kev faib ua feem ntawm silicon hlau hmoov ntxiv rau cam khwb cia hlau yog nruab nrab ntawm 1.0% thiab 3.5%, uas tuaj yeem txhim kho qhov tawv, lub zog thiab tawv tawv ntawm cov hlau cam khwb cia, thiab txhim kho qhov chaw tiav thiab hnav tsis kam ntawm castings.
2. Qhov kev faib ua feem ntawm silicon hlau hmoov ntxiv rau aluminium alloy yog nruab nrab ntawm 5.0% thiab 10.0%, uas tuaj yeem txhim kho hardness, lub zog thiab hnav tsis kam ntawm cov hlau, txhim kho tensile lub zog thiab qaug zog lub zog ntawm cov hlau, thiab pab txhim kho nws qhov kub thiab txias tsis kam thiab oxidation tsis kam.
3. Qhov kev faib ua feem ntawm cov hmoov hlau silicon ntxiv rau cov hlau yog nyob nruab nrab ntawm 0.05% thiab 0.3%, uas tuaj yeem txhim kho hardness, lub zog thiab corrosion kuj ntawm cov hlau, txhim kho qhov txias thiab kub deformation. muaj peev xwm thiab catalytic kev ua haujlwm ntawm cov hlau, thiab yog siv los tsim cov hlau tshwj xeeb.
