【判断题】【消耗次数:1】
磨削时,易产生高温,因此会产生“磨削烧伤”现象。“磨削烧伤”是指磨削过程中工件表面的温度很高,使材料产生了金相组织的变化。
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错误
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相关题目
【判断题】 为减轻磨削烧伤,可加大磨削深度。
①  正确
②  错误
【判断题】 磨削淬火钢时,工件表层金属金相组织发生变化而产生残余拉应力。()
①  正确
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【单选题】 在切削或磨削的过程中,若工件表面层金属温度高于材料的相变温度,将引起( )
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【单选题】 用高速运动的砂带作为磨削工具磨削各种表面的方法称为( )
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【单选题】 机械加工过程中,切削或磨削热使工件表面局部温升过高,引起( )。
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①  焊缝
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③  铸-焊
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①  刀具
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【单选题】 磨削表层裂纹是由于表面层()的结果
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①  正确
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