左志超,徐维义,王磊,等.埋弧堆焊WC颗粒增强复合层的工艺及性能[J].精密成形工程,2019,11(5):137-141.
ZUO Zhi-chao,XU Wei-yi,WANG Lei,et al.Process and Performance of Submerged Arc Surfacing WC Particle Reinforced Composite Layer[J].Journal of Netshape Forming Engineering,2019,11(5):137-141. |
| 埋弧堆焊WC颗粒增强复合层的工艺及性能 |
| Process and Performance of Submerged Arc Surfacing WC Particle Reinforced Composite Layer |
| 投稿时间：2019-07-21 修订日期：2019-09-10 |
| DOI：10.3969/j.issn.1674-6457.2019.05.021 |
| 中文关键词: WC颗粒 钢基复合材料 显微硬度 |
| 英文关键词: WC particles steel matrix composites micro-hardness |
| 基金项目:江西省优势科技创新团队重点项目（20181BCB19002）；江西省科技厅重点研发计划（20171BBE50010） |
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| 中文摘要: |
| 目的 针对传统钢材硬度低、不耐磨损的问题，选用WC颗粒来增强传统钢材性能，研究不同工艺对WC颗粒增强钢基材料的影响。方法 采用埋弧焊方法，将含有WC颗粒的药芯焊丝在钢板表面进行堆焊，采用SVS3020显微镜、光学显微镜和显微硬度计对焊缝的显微组织进行观察与分析。结果 随着焊接电流、电压的增大，焊缝成形逐渐完好，无焊缝缺陷，焊接速度增大，焊缝有夹渣缺陷产生；焊缝硬度随着电流、速度的提升而增大，但随电压的提升而下降。结论 埋弧焊焊接选用350 A电流、32 V电压和20 m/s速度成形的焊缝质量最佳，基体的稀释作用对堆焊合金层的显微硬度也有明显影响。 |
| 英文摘要: |
| The paper aims to enhance the properties of traditional steel with WC particles and research the effects of different processes on WC particle reinforced steel base materials to solve the problems of low hardness and wear resistance of traditional steel. By using submerged arc welding, the flux cored wire containing WC particles was surfacing welded on the surface of the steel plate, and the microstructure of the welding seam was observed and analyzed with SVS3020 microscope, optical microscope and micro-hardness tester. With the increase of current and voltage, intact and weld defect free welding seams form gradually. The weld hardness increases with the increase of current and speed, but decreases with the increase of voltage. Submerged arc welding is conducted with 350 A current, 32 V voltage and 20 m/s speed to form the best weld quality. The micro-hardness of surfacing alloy layer is also significantly affected by the dilution of matrix. |
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