| 摘要: | 隨著科技的進步，使得各產業的產品都在追求小而精密的發展，在其中不銹鋼管亦在不同產業有著其重要的地位，其產業包含建築、醫療、食品加工及化工等行業。為此本實驗提出了一個針對不銹鋼管內拋光之裝置，並加入電解混氣裝置輔助加工，以不同的不銹鋼管工件參數(內徑、長度)、加工電壓、電解液流量探討加工結果，探討加工參數對不銹鋼管內表面的影響，得到較佳之表面粗糙度。
研究流程方面，首先以工件內徑 7 mm、長度 20 mm之不銹鋼管進行初始實驗，使用電解式混氣法在電解液中混入氣泡，並以電源供應器控制混氣量，並控制電解液流動之流量，最終嘗試出電解電漿拋光方法。實驗結果發現，加工後的工件表面拋光並不均勻，在工件的入水口端表面明顯較為光滑且表面粗糙度低，但在出水口端的表面較為霧面且表面粗糙度較高。電解液流量對於管內電解電漿拋光扮演重要的角色，不同的工件參數(內徑、長度)、加工電壓，每種參數會有可成功引弧之電解液流量。以不銹鋼管內徑 7 mm、長度 20 mm為例，其能得到最佳表面粗糙度，其入水口端可達 0.047 μm至 0.065 μm，表面品質改善率達 92.0 % 至 88.9 %。
;With the advancement of technology, industries are striving for smaller and more precise product development. Stainless steel tubes, in particular, hold a significant position across various industries, including construction, medical, food processing, and chemical sectors. This experiment proposes a device for internal polishing of stainless steel tubes, incorporating an electrolytic gas-mixing device to assist in the process. It explores the effects of different parameters—such as the inner diameter and length of the stainless steel tubes, processing voltage, and electrolyte flow rate—on the polishing results, aiming to achieve improved surface roughness.
In terms of the research process, initial experiments were conducted using stainless steel tubes with an inner diameter of 7 mm and a length of 20 mm. The electrolytic gas-mixing method was applied by introducing bubbles into the electrolyte, with the gas volume controlled via a power supply and the electrolyte flow rate precisely regulated. Ultimately, the method of electrolytic plasma polishing was tested. The experimental results revealed that the polished surface of the workpieces was not uniform. The surface near the water inlet was significantly smoother and had lower surface roughness, while the surface near the water outlet appeared matte and had higher surface roughness. Electrolyte flow rate plays a critical role in internal electrolytic plasma polishing, as each combination of workpiece parameters (inner diameter, length) and processing voltage requires a specific electrolyte flow rate to successfully ignite the arc.
For example, with a stainless steel tube of 7 mm inner diameter and 20 mm length, the optimal surface roughness achieved at the water inlet ranged from 0.047 μm to 0.065 μm, with surface quality improvement rates of 92.0% to 88.9%.
This method demonstrates the potential to significantly enhance the internal surface quality of stainless steel tubes, especially with careful control of electrolyte flow and processing parameters. |
