課程名稱機械制造技術基礎雙語a(編輯修改稿)
2025-07-21 06:22 本頁面
【文章內容簡介】 合金。這類合金主要用來加工鑄鐵、有色金屬及其合金。M類（相當于我國類）硬質合金是在、的基礎上再加入（或）而成。這類硬質合金既可以加工鑄鐵和有色金屬，又可以加工鋼料，還可以加工高溫合金和不銹鋼等難加工材料，有通用硬質合金之稱。涂層刀具是在高速鋼或硬質合金基體上涂覆一層難熔金屬化合物，如、等。涂層刀具表面硬度高，耐磨性好，其基體又有良好的抗彎強度和韌性。涂層硬質合金刀片的壽命可提高1~3倍以上，~10倍以上。教學內容提要時間分配備注TABLE 22 Designations, properties and application fields of CarbidesTypesDesignationsPhysical dynamic propertiesUsabilityApplication fieldsSuitable designations Hardness/HRABending strength/GPaWare resistanceImpact resistanceHeat resistanceMaterialsMachining charactersKYG391↑↓↑Cast iron,nonferrous metalFinishing and semifinishing in continuous cuttingK05YG6X91Cast iron,heatresistant alloyFinishing and semifinishingK10YG6Cast iron,nonferrous metalFinishing in continuous cutting semifinishing in interrupted cuttingK20YG889Cast iron,nonferrous metalRoughing in interrupted cuttingK30PYT5↓↑↓SteelRoughingP30YT14SteelSemifinishing in interrupted cuttingP20YT1591SteelRoughing in continuous cutting semifinishing in interrupted cuttingP10MYW192Relatively goodRelatively goodHard machining steelsFinishing and semifinishingM10YW291
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