粉嫩大学生无套内射无码卡视频,英语老师的大白兔子又大又好吃,午夜毛片不卡免费观看视频,两腿间花蒂被吸得异常肿大,亚洲小说乱欧美另类,少妇熟女久久综合网色欲,无码人妻丝袜在线视频,在线看片无码永久免费aⅴ,国产精品亚洲精品日韩动图,gogogo高清在线观看视频中文

        歡迎進(jìn)入深圳市錦鴻宇實(shí)業(yè)有限公司官網(wǎng)!
        News
        NewsNews

        The way and way of precision parts processing

        時(shí)間:2020-06-09瀏覽次數(shù):4667

        For the machinery industry and the automotive industry, the most frequently contacted substances are a series of parts and components. No matter what style or type, they are more or less familiar and know. Which kind of parts are used in which structure or which application position, the staff in the related industries knows the roots. However, no matter what kind of configuration, it needs to go through certain processing steps before it can be implemented in specific mechanical equipment. Therefore, professionals call this step precision machining.


        There are many ways to process precision parts, such as heat treatment. Parts refer to the single parts that are inseparable in machinery, which are the basic components of the machine and the basic unit in the process of machinery manufacturing. The manufacturing process generally does not require assembly procedures. Such as bushing, bearing bush, nut, crankshaft, blade, gear, cam, connecting rod body, connecting rod head, etc.


        1. Cutting of precision parts. Mainly include precision turning, mirror grinding and grinding. Micro turning is carried out on a precision lathe with a finely polished single crystal diamond turning tool, and the cutting thickness is only about 1 micron. It is often used to process non-ferrous metal materials such as spherical surfaces, aspheric surfaces, and flat reflectors. . Second, precision parts processing. When the precision of precision parts processing is in nanometers, and even in the end, the atomic unit (atomic lattice distance is 0.1 to 0.2 nanometers) is the target, the ultra-precision parts cutting processing method can no longer be adapted, and it is necessary to resort to special precision parts processing methods, that is, the application of chemical energy , Electrochemical energy, thermal energy or electrical energy, so that these energies exceed the joint energy between atoms, thereby removing the attachment, union or lattice deformation of some atoms on the surface of the workpiece to achieve the purpose of ultra-precision machining. These types of processing include mechanical chemical polishing, ion sputtering and ion implantation, electron beam exposure, laser beam processing, metal evaporation, and molecular beam epitaxy.

        服務(wù)熱線:13631565136
        手機(jī):18926579610
        電話:0755-26740010
        郵箱:senyuanmoju@126.com
        地址:廣東省深圳市寶安區(qū)石巖街道水田工業(yè)區(qū)寶石東路123號(hào)7棟1樓

        掃一掃關(guān)注我們

        日韩人妻无码专区精品| 日韩精品无码一区二区中文字幕| 欧美精品VIDEOSEX极品| 成人免费观看黄A大片| 乱中年女人伦AV一区二区| 中文字幕无码人妻aaa片| 99ri国产精品| 成人区人妻精品一区二区不卡 | 综合欧美一区二区三区| 国产伦久视频免费观看视频| 熟女少妇精品一区二区| 少妇人妻偷人精品视蜜桃| hd老熟女bbn老淑女| 野外少妇愉情中文字幕| 国产精品第12页| 少妇粉嫩小泬喷水视频www| 国产精品一在线观看| 公天天吃我奶躁我的在线观看| 免费吃奶摸下激烈视频| 纯肉无遮挡H肉动漫在线观看国产 久久亚洲精品成人AV无码网站 | 熟妇女人妻丰满少妇中文字幕| 中国老太婆bb无套内射| 免费 无码 国产真人视频九色| 国产成人精品亚洲日本91 | 欧美日韩在线视频一区| 色欲欲www成人网站| 玖玖在线免费视频| 国产丰满美女a级毛片| 国产情侣作爱视频免费观看| 精品无码人妻一区二区三区不卡| 区二区欧美性插b在线视频网站| 久久中文字幕人妻熟av女| 亚洲日韩精品一区二区三区| 亚洲中文无码a∨在线观看| 水蜜桃亚洲一二三四在线| 国产在线精品二区| 精品一区二区久久久久久久网站| 国产精品视频一区二区三区四| 精品乱子伦一区二区三区| 久久久久久久97| 精品久久综合1区2区3区激情|