郝越峰,曹明让,曹一龙.一种 45 钢表面电火花沉积 WC 层的新方法[J].表面技术,2014,43(4):97-100,129.
HAO Yue-feng,CAO Ming-rang,Cao Yi-long.A New Method of Depositing WC Alloying by EDM Technology on the Surface of 45 Steel[J].Surface Technology,2014,43(4):97-100,129 |
| 一种 45 钢表面电火花沉积 WC 层的新方法 |
| A New Method of Depositing WC Alloying by EDM Technology on the Surface of 45 Steel |
| 投稿时间：2014-02-21 修订日期：2014-03-24 |
| DOI： |
| 中文关键词: 电火花小孔加工机床 WC 合金 电火花沉积 |
| 英文关键词:EDM hole processing tool WC alloying EDM deposition |
| 基金项目:国家自然科学基金(51075294) ;山西省自然科学基金(20090110029-3) |
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| 中文摘要: |
| 目的 提出一种利用高速电火花小孔加工机床实现工件表面强化的新方法。 方法 基于电火花沉积理论,通过改变机床电极的极性,在 45 钢表面电火花沉积 WC 层,从沉积层的厚度、粗糙度和微观缺陷三个方面分析电流和脉宽对沉积层质量的影响。 结果 当脉宽为 80 μs,电流为 7 A 时,获得的沉积层厚为 35 μm,硬度达 1000 HV,无明显缺陷。 结论 D703 F 高速电火花小孔加工机床更换极性后,能够进行表面沉积,适当调整工艺参数可以实现空气中放电沉积,并获得理想的沉积层。 |
| 英文摘要: |
| Objective A new method of surface strengthening by ordinary high-speed Electrical Discharge Machining ( EDM) hole processing tool was described. Methods Sediment layer reinforced by tungsten carbide on surface of 45steel could be obtained based on the theory of electric spark deposition by changing the polarity in the air dielectric. This paper analyzed the influence of various process parameters on the sediment quality from three aspects of the roughness, thickness and micro sedimentary defects. Results 7 A and 80 μs pulse width was chosen to get the optimal sediments of comprehensive quality, its thickness could reach 35 μm and its hardness was 1000HV without visible flaws in the sediment layer. Conclusion The D703F high-speed EDM hole processing tool could generate sediment layer through changing its polarity and get optimal sediments layer by appropriate adjustment of processing parameters. |
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