【摘要】：目前單層CBN砂輪成為超高速窄深槽加工的首選,針對目前電鍍法制備CBN工具存在的鍍層與基體結合強度差、鍍層質量難以控制等的問題,對45#鋼基體試件進行了電鍍鎳實驗。運用脈沖電鍍方法,制備了單金屬鎳層。研究了脈沖電源占空比對鍍層孔隙率的影響及電源脈沖頻率對鍍層表層質量的影響,獲得最優(yōu)組合條件下的電鍍鍍層結構及形貌。實驗結果表明:當脈沖電源占空比為20%、脈沖頻率為0.5k Hz時,獲得的鍍層具有較低的孔隙率、晶粒細致的結構及形貌。
[Abstract]:At present, single layer CBN grinding wheel is the first choice in ultra-high speed narrow deep grooves processing. In view of the problems of poor bonding strength between coating and substrate and difficult control of coating quality, the nickel electroplating experiments were carried out on 4 steel substrate specimens. Single metal nickel layer was prepared by pulse electroplating. The effect of duty cycle ratio of pulse power on the porosity of the coating and the influence of pulse frequency on the surface quality of the coating were studied. The structure and morphology of the electroplating coating were obtained under the optimal combination condition. The experimental results show that when the duty cycle is 20 and the pulse frequency is 0.5 kHz, the coating has low porosity, fine grain structure and morphology.
【作者單位】： 太原理工大學機械工程學院精密加工山西省重點實驗室;
【基金】：國家自然科學基金資助項目(51575375) 山西省自然科學基金資助項目(02050238)
【分類號】：TQ153.12

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