According to the present situation of finned tube production technology in high frequency welding finned tube factory, it can be roughly divided into five categories: set fin, inlaid spiral fin, brazed spiral fin, high frequency welding spiral fin and three roll skew rolling spiral fin. The following is a detailed analysis of the high-frequency welded finned tube factory for you. 1、套装翅片
1, set of fins
Firstly, single fin is processed by punching machine. Then, according to certain fin spacing and interference, the fin is fitted on the outer surface of the tube by manual or mechanical method. This is the earliest method of finned tube processing. Although the processing method is the oldest, practicality still applies to today's market. The method of manual processing is a labor-intensive mode of operation, which is suitable for the technical and financial conditions of general small factories or township enterprises. However, this method is easy to loosen because of the limited force of artificial pressure on the fins, so the interference of the suit is small. Of course, there will not be any loosening in production with finned sets. Because fins depend on mechanical or hydraulic pressure pressure force uniformity, impact force, can produce a larger interference. The bonding strength between the fins and the base tube is very high.
2. Mosaic spiral fins
The production process of inlaid spiral fin in finned tube radiator is to pre-process a certain width and depth spiral groove on the steel pipe, and then to inlay the steel strip on the steel pipe on the lathe. In the winding process, due to a certain pre-tightening force, the steel strip will be tightly tied to the spiral groove, thus ensuring a certain contact area between the steel strip and the steel pipe. In order to prevent the springback of the steel strip from falling off, the ends of the steel strip are welded on the steel pipe. Easy to set. It is necessary to have a certain backlash between the steel strip and spiral groove. If the backlash is too small to form interference, the inlaying process is difficult to proceed smoothly. Winding steel strip will always have a certain rebound, the result will make the steel strip and spiral groove can not be well combined.
3. Brazed spiral fins
The brazing spiral fin production process in finned tube radiator firstly, the tube wrapped with steel strip is put into the zinc bath for overall hot-dip galvanizing. The galvanized layer forms a special metallurgical structure which can withstand mechanical damage during transportation and use. The galvanized coating is metallurgical bonded with steel and becomes a part of the steel surface, so the durability of the coating is more reliable. Every part of the plated part can be galvanized, even in the depressions, sharp corners and hidden areas can be fully protected. The galvanizing process is quicker than other coating methods, and the time required for painting on the site after installation is avoided. In suburban environments, the standard thickness of hot-dip galvanizing rust-proof coating can be maintained for more than 50 years without repair; in urban or offshore areas, the standard thickness of hot-dip galvanizing rust-proof coating can be maintained for 20 years without repair.辛苦整理.转载请注明http://www.wxsxsjx.com
标签:   环氧地坪 地坪 环氧地坪漆 环氧地坪施工 翅片管