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铸造中按H8与H7级精度加工已预先铸出或热冲出的孔的余量
作者：bearingpower 发表时间：2010-12-12
铸造中按H8与H7级精度加工已预先铸出或热冲出的孔的余量关键字：铸造 按H8与H7级精度加工已预先铸出或热冲出的孔的余量 （单位：mm）加工孔的直径直径加工孔的直径直径粗镗半精镗粗铰或一次半精镗精铰或精镗粗镗半精镗粗铰或一次半精镗精铰或精镗第一次第二次第一次第二次30?2829.829.9330105100103104.3104.810532?3031.731.9332110105108109.3109.811035?3334.734.9335115110113114.3114.811538?3637.737.9338120115118119.3119.812040?3839.739.9340125120123124.3124.812542?4041.741.9342130125128129.3129.813045?4344.744.9345135130133134.3134.813548?4647.747.9348140135138139.3139.814050454849.749.9350145140143144.3144.814552475051.751.9352150145148149.3149.815055515354.554.9255155150153154.3154.815558545657.557.9258160155158159.3159.816060565859.559.9560165160163164.3164.816562586061.561.9262170165168169.3169.817065616364.564.9265175170173174.3174.817568646667.567.968180175178179.3179.818070666869.569.970185180183184.3184.818572687071.571.972190185188189.3189.819075717374.574.975195190193194.3194.819578747677.577.978200194197199.3199.820080757879.579.980210204207209.3209.821082778081.381.8582220214217219.3219.822085808384.384.8585250244247249.3249.825088838687.387.8588280274277279.3279.828090858889.389.8590300294297299.3299.830092879091.391.8592320314317319.3319.832095909394.394.8595350342347349.3349.835098939697.397.8598380372377379.2379.75380100939899.399.85100400392397399.2399.75400注：1、如果铸出的孔有很大的加工余量时，则第一次粗镗可分为两次或多次粗镗。2、如果只进行一次半精镗，则其加工余量为表中“半精镗”和“粗铰或二次半精镗”加工余量之和。上一篇：碳钢和低合金钢的钎焊
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