国产又色又爽又高潮免费视频麻豆,国产三级精品三级在专区,日本丶国产丶欧美色综合 ,上司人妻互换hd无码

HomeHotlineContact
0position:Home>>News

Development of bridge steel structure and other industries

source:   author: time:2020-08-15 Visits:1457
The research and accumulation work of domestic milling machine manufacturers in welding process is still very limited, so it is difficult to provide mature and reliable welding process support. As a result, domestic products have no competitive advantage with imported products except for price, and most of the high-end market share is still occupied by imported edge milling machines. It is the lack and disconnection of intelligence and welding process service that China's welding equipment is mostly pure machines and equipment, and does not shoulder the responsibility of solving welding problems for welding users. The utility model comprises a machine base, two side plates, a beam and a knife rest. A working table is arranged on the machine base, and a number of hydraulic pressure plate devices are connected at the lower part of the beam. The hydraulic pressure plate device is located above the working table. The tool rest walking car is also provided on the tool rest walking car. The guide rail with the same length and parallel to the working table is arranged on the front of the machine base. The tool rest traveling car is connected with the machine base through the guide rail 。

With the development of construction machinery manufacturing industry, shipbuilding and processing industry, heavy machinery and equipment, bridge steel structure and other industries in recent ten years, the domestic edge milling machine manufacturers have developed in the spring. The total production capacity and sales capacity of 2000 sets in China before have increased to 30000 sets per year. The annual output value of the former industry has grown from 800 million to nearly 10 billion The industry cake has become bigger, but more and more edge milling machine manufacturers have found that the production volume of enterprises has increased, but the profit does not increase much. In addition, the development prospect of the enterprise is not very clear. Many problems have been encountered. The specific problems are summarized as follows: the investment in factories and equipment is increasing, which is mainly reflected in the manufacturing equipment of edge milling machine, such as milling machine motor, welding forming equipment and automatic welding equipment, screw drive mechanism, numerical control operation equipment, pneumatic pressure plate mechanism, The cost of steel structural parts is increasing year by year.

The main drive guide rail is the key part of the milling machine, In actual use, if the maintenance is not proper, the main guide rail is easy to wear and roughen. The guide rail of milling machine is generally cast guide rail, with surface high frequency quenching hardness of about hrc45, and the weight of main traveling mechanism is about 3-4 tons. Long term heavy load travel on the guide rail, the upper and lower guide rails are sliding friction, which causes great damage to the guide rail, causing abnormal wear and roughening of the guide rail 。 While the price of copper and iron rises, the price of electronic devices gradually decreases, which makes the cost advantage of inverter edge milling machine stand out. In order to pursue the market share, most of the enterprises compete with each other, compete in disorder with low price and even sell with negative profit, which will seriously endanger the healthy development of China's welding equipment industry. How to deal with the relationship between cost, profit and market share is a common problem for the whole welding equipment industry.

The edge milling machine adopts the form of sliding guide which is widely used on heavy machine tools, with large contact area, good rigidity and strong seismic resistance. In order to reduce the friction resistance of the guide rail, a large carriage unloading device is added. A load-bearing rolling cylinder is installed between the guide rail and the carriage, which bears most of the gravity of the carriage. In this way, the friction resistance of the guide rail is changed from simple sliding friction to sliding plus rolling, the friction coefficient is greatly reduced, and the friction force is also greatly reduced. Accordingly, the service life of guide rail is improved. In order to improve the wear resistance of the guide rail pair and improve the friction characteristics, the corresponding friction pair is pasted with plastic. Commonly known as plastic rail. The chemical composition of plastic sliding guide is stable and the friction coefficient is small.

More high quality price milling machine, there are pressure beam milling machine, no pressure beam edge milling machine, end face milling machine, end face milling machine, planer. Please pay attention detroitnewsday.com


All rights reserved:WUXISHI XILI MILLING MACHINE CO.,LTD(detroitnewsday.com)  Su ICP 15043207-1 Design :25318.cn

久久久久久久女国产乱让韩| 欧美xxxx色视频在线观看| 国产深夜男女无套内射| 国产一区二区三区日韩精品| 免费人成网视频在线观看| 天天爱天天做狠狠久久做| 久久97精品久久久久久久不卡 | 熟妇高潮喷沈阳45熟妇高潮喷| 强奷乱码欧妇女中文字幕熟女| 蜜芽国产成人精品区| 亚洲中文精品久久久久久| 人妻无码中文专区久久五月婷| 亚洲丰满熟女一区二区哦| 西西人体扒开下部试看120秒 | 2021夜夜乳狠狠乳狠狠爱| 国产在线精品一区二区不卡麻豆| 国产婷婷色综合AV性色AV| 人妻激情偷乱视频一区二区三区| 台湾佬综合网| 国产精品久久久久9999小说 | 成人免费一区二区三区视频软件| 国产成人A在线视频免费| 久久精品国产亚洲AV麻豆导航 | 亚洲av精品一区二区三区| 男人的天堂免费一区二区视频| 爱性久久久久久久久| 插我舔内射18免费视频| 人妻AV无码系列一区二区三区| 亚洲成片在线观看12345| 中文字幕丰满乱子伦无码专区| 最近2019好看的中文字幕免费| 婷婷五月小说| 亚洲国产精品日韩AV专区| 亚洲欧美成人一区二区三区| 玩弄少妇高潮ⅹxxxyw| 人妻丰满熟妇av无码片| 小妖精又紧又湿高潮h视频69 | 欧美乱妇高清免费96欧美乱妇高清 | 337P日本欧洲亚洲大胆精筑| 国产精品婷婷久久爽一下| 毛茸茸的中国女bbw|