国产精品亚洲аv无码播放_国产亚洲午夜高清国产拍精品_欧美一级婬片6080片免费播放_久久久99精品免费观看_人人直播高颜值美女_久久久噜噜噜久久久白丝袜

Add time :2021-07-20   Click :3031
What are the types of polishing machines

There are many kinds of polishing machines. How can we classify them? What are the types of polishing machines? Polishing machine, also called grinder, is generally used for mechanical grinding, polishing and waxing. The principle of the polishing machine is: the motor drives the sponge or wool polishing disc installed on the polishing machine to run at high speed. Because the polishing disc interacts with the polishing agent and rubs on the surface to be polished, the pollution, oxide layer and shallow mark on the paint surface can be removed. The speed of polishing disc is generally 1500-3000r / min, most of which are infinitely variable and can be adjusted at will during construction.

(1) According to the power source, there are pneumatic and electric. Pneumatic type is safer, but it needs air source. Electric type is easier to solve the problem of power supply, but we must pay attention to the safety of electricity.

(2) According to the function, there are two functions of industrial sanding / polishing machine and simple polishing machine. Dual function industrial abrasive polishing machine can be equipped with grinding wheel to polish metal materials, and can be replaced by polishing disc to protect automobile paint surface. The machine is heavy and weighs 2-3kg, but it runs very smoothly and is not easy to be damaged. The speed of the model can be adjusted, suitable for professional nursing staff. The simple polishing machine is actually a drilling machine, which is small and the speed cannot be adjusted. It is difficult to grasp the balance when using. Professional nurses generally do not use such machines.

(3) According to the speed, it can be divided into three types: high speed polishing machine, medium speed polishing machine and low speed polishing machine. The speed of high-speed polishing machine is 1750-3000r / man, and the speed is adjustable; The speed of medium speed polishing machine is 1200-1600r / rain, and the speed is adjustable. The speed of low-speed polishing machine is 1200R / min, which can not be adjusted.

99久久国产宗和精品1上映 | 91精品国产91久久久久久最新 | 亚洲乱码精品一区二区不卡 | 久久婷婷国产剧情内射白浆 | 久久久久久夜精品精品免费 | 在线观看视频网站国产日本 | 久久99精品麻豆国产色欲 | 精品乱码一区内射人妻无码 | 丁香五月男人的天堂京东热 | 免费A级毛片18禁网站免费 | 69国产品国产在线观看 | av老熟妇无码一区二区三区 | 国产中文区一幕区2021 | 精品久久亚洲中文无码 | 91精品免费观看在线播放 | 国产欧美日韩综合精品无毒 | 中文字幕久久久久人妻中出 | 无码精品人妻一区二区三区免费看 | 国产综合无码一区二区色蜜蜜 | 亚在线观看免费视频入口 | 国产无吗一区二区三区在线欢 | 在线观看免费播放AV片 | 日韩精品一区二区亚洲AV观看 | 日韩欧美亚洲色图中文字幕 | 日韩一卡2卡3卡4卡新区亚洲 | 中文字幕日韩精品无码内射 | 精品人妻潮喷久久久又裸又黄 | 久久永久免费人妻精品 | 2019年中文字幕日韩在线 | 国产农村妇女精品一二区 | 午夜精品久久久内射近拍高清 | 国产真人无码作爱视频免费 | 国产精品嫩草影院午夜两性 | 在线看片国产日韩欧美亚洲 | 精品熟妇视频一区二区三区 | 亚洲V日韩V无码一区二区 | 亚洲最新无码中文字幕久久 | 内射极品少妇一区二区AV | 国产亚洲精品精品精品 | 成年女人AA级毛片免费观看 | 中文字幕av不卡在线无码 |