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一、概述尺寸镀铬(或弥精密镀珞),即用镀铬工艺直接保证镀铬部位的尺寸精度。这一工艺方法与原工艺即镀后切削保证精度比较,有如下特点: 1、镀层薄而均匀,镀层一般为0.045～0.055mm左右(原工艺为0.15～0.20mm左右)。由于镀层薄,镀层内应力小,结合力强,不易剥落。 2、工艺简单,生产效率高,镀层质最好。尺寸镀铬不需磨削,不但节约了大量磨削工时,而且避免了磨削应力及灼伤所引起的网状裂纹以及镀前直线度、圆度等误差所引起的磨后镀层不均,局部无铬的现象,质量可靠。
First, an overview of the size of chrome (or Mi dense plated Luo), that is, chrome plating process directly to ensure the dimensional accuracy of the site. This process method is compared with the original process after plating cutting guarantee accuracy, has the following characteristics: 1, the coating is thin and uniform, the coating is generally about 0.045 ~ 0.055mm (the original process is about 0.15 ~ 0.20mm). As a thin coating, coating stress is small, strong bonding, easy to peel. 2, simple process, high production efficiency, best quality coating. Size chrome without grinding, not only saves a lot of grinding time, but also to avoid the grinding stress and burns caused by the network of cracks and before the straightness, roundness and other errors caused by uneven wear after grinding, local no Chromium phenomenon, reliable quality.