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4、活塞环表面处理RIKEN对活塞环有以下各种表面处理方法:1） AC……全部表面镀铬（外侧和内侧镀铬）2）C……镀硬铬（只在工作面镀铬）3）CG……嵌入型镀铬（在环槽工作面上镀铬）4）AC……多孔性镀铬（只在工作面上镀铬）5）QBC……QB镀铬（在工作面上的一种特殊快速镀铬方法）6） CU……镀铜7）SN……镀锡8） GF……充镇（在环槽工作面上充填特殊润滑剂）9）CM……镶金属（在环槽工作面上镶铜带）10） T……盐浴低温氮化
4, Piston ring surface treatment RIKEN on the piston ring has the following various surface treatment methods: 1) AC ... ... all the surface chrome (outside and inside chrome) 2) C ...... hard chrome plated (chrome only on the face) 3 CG ... embedded chromium plating (chrome plating on the grooved working surface) 4) AC ... porous chrome plating (chrome plating on the working surface only) 5) QBC ... QB chrome plating (a special rapid chrome plating method on the working surface) 6) CU ... copper plating 7) SN ... tin plating 8) GF ... filling the town (filling special lubricant in the ring groove) 9) CM ... inlaid metal ) 10) T ... salt bath low temperature nitriding