【摘 要】
：
为了实现局部激光熔覆强化自由曲面模具的软固结气压砂轮均匀光整加工,以激光熔覆PHNi25WC-60A粉末的自由曲面模具为对象,通过激光熔覆强化试验与硬度测试得到了不同硬度梯度
【机 构】
：
中国计量学院质量与安全工程学院,浙江工业大学特种装备制造与先进加工技术教育部重点实验室,浙江中控软件技术有限公司,
论文部分内容阅读
为了实现局部激光熔覆强化自由曲面模具的软固结气压砂轮均匀光整加工,以激光熔覆PHNi25WC-60A粉末的自由曲面模具为对象,通过激光熔覆强化试验与硬度测试得到了不同硬度梯度变化曲线,根据激光熔覆强化区模具的气压砂轮光整加工试验结果,且由数值拟合方法得到材料去除率与表面硬度之间的关系与解析表达式,通过软固结磨粒气压砂轮接触压力控制方法的光整加工试验,较好实现了局域强化硬度过渡区柔性气压砂轮光整加工材料均匀化去除,说明了接触力控制方法在针对局部激光熔覆强化自由曲面模具的气压砂轮光整中的可行性和必要性。
In order to realize the uniform finishing of soft-bonded pressure grinding wheel with local laser cladding strengthened free-form surface mold, the laser beam cladding free-form surface mold of PHNi25WC-60A powder was used as laser cladding strengthening test and hardness test to obtain different hardness gradients According to the experimental results of the surface finishing by laser grinding, the relationship between the material removal rate and the surface hardness was obtained by the numerical fitting method. Through the soft abrasive particle pressure grinding wheel contact Pressure control method of finishing test, the better to achieve the local area of ?? enhanced hardness transition zone flexible pneumatic grinding wheel material processing uniformity of removal, indicating that the contact force control method for local laser cladding surface free-form mold surface roughness wheel light The whole of the feasibility and necessity.
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