为金属“绣花”：全国技术能手0.001毫米上的匠心“锉”磨|国产乱子伦无码视频免费
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中新网郑州9月20日电 (杨静 李星葶)20日，在第三届全国技能大赛绝技绝活展演现场，来自山西航天清华装备有限责任公司的特级技师李晓波与徒弟崔帅正联合展演“合金铝半球窄圆环面精密修磨”项目这一项高难度工艺。
只见李晓波与崔帅拿出特制的油光锉，分别在一个铝制空心半球的环形端面上手工锉削，动作沉稳，一丝不苟，随后又进行精密研磨，最终要实现两个经过修研的半球在不使用任何密封材料的情况下紧紧贴合，抽出内部空气后，形成一个完整真空球体。
最后，李晓波与崔帅使用专业工具在两个半球上分别施加一定拉力，对修研平面的密封性能进行测试。现场测试拉力达到33公斤左右，数据超过了两人日常试验的纪录。
要实现两个半球的紧密贴合，保证密封性能，半球环面修研平面度需达到0.001毫米以内，表面粗糙度达到Ra0.1微米。李晓波介绍：“目前有些精密部件无法用机器加工，还是需要手工操作。想要达到以上精度，便是要依靠工匠师傅的手感、经验和判断，同时也是对师徒两人操作配合默契程度的考量。”
因长年累月持锉操作，李晓波的大拇指指甲显著增厚，成为岁月颁予的“职业勋章”。作为全国技术能手，他的“铅笔芯上钻微孔”曾入选第二届全国技能大赛“最受欢迎十大绝技”。但李晓波始终坚守一线，“我已年过五十，会一直干到退休。但更重要的，是把技艺传下去。”
为推进技艺传承与人才培育，李晓波同时担任国家级技能大师工作室带头人。目前，山西省已成功建立318个省级技能大师工作室，构建起高技术人才培育的重要基地。(完)
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