国产免费又硬又黄又爽的视频喷水 I 人妻波多野结衣爽到喷水 I 国产超碰av人人做人人爽 I 97精品国产手机 I www.黄色片视频 I 野花社区免费观看在线www I 久久精品一区视频 I 性欧美欧美 I 91小视频版在线观看www I 亚洲熟妇丰满多毛xxxx I 久久精品国产成人午夜福利 I 爱色精品视频一区二区 I 国产成人牲交在线观看视频 I 欧美一级淫片免费视频1 I 成人黄视频在线观看 I 欧美亚洲另类自拍丝袜 I 色很久综合 I 777国产偷窥盗摄精品品在线 I 天堂中文在线最新版www I 久久亚洲精品无码观看不卡 I 99视频在线精品免费观看2 I 强行从后面挺进人妻 I 国产伦精品一区二区三区免.费 I 一区二区三区av夏目彩春 I xxx国产在线观看 I 久久久久久成人精品 I 国产精品国语对白露脸在线播放 I 欧洲熟妇牲交 I 国产精品999 I 999久久久欧美日韩黑人 I 欧美另类 自拍 亚洲 图区 I 粉嫩一区二区三区性色av I 大胸女被c黄漫画动漫原神 I 一区二区三区国产盗摄 I 26uuu成人网一区二区三区

The function of the cooling water chiller of the vacuum coating machine is to maintain the temperature of the vacuum coating machine, so that it can achieve the purpose of high precision and high efficiency temperature control. In the past, without a chiller, natural water and water tower heat dissipation were inevitably affected by natural temperature, and this method of control was unstable. Therefore, it can be said that the chiller is a very important supporting cooling equipment in the vacuum coating equipment, because the chiller is directly related to the working effect of the vacuum coating machine.
Why does the vacuum coating machine need to be equipped with a chiller?
This should be viewed from the working principle of vacuum coating: the film material evaporates and crystallizes on the surface of the workpiece at high temperature. Because the air will produce resistance to the evaporated film material molecules and cause collisions to make the crystals rough and dull, it must be under high vacuum to make the crystals dense and bright. If the vacuum is not high, the crystals will lose their luster and have poor bonding force.
The chiller is equipped with a refrigeration system and a cooling water circulation system. The water temperature is adjusted and controlled within the range of 5℃～30℃, which can achieve the purpose of high precision and high efficiency temperature control. The cooling principle is: the refrigeration system cools the water, and then the low-temperature cooling water is sent to the vacuum coating machine by the water pump to cool down. The chilled water of the chiller takes away the heat and the temperature rises and then returns to the water tank to achieve cooling.