我國翅片管技術現狀/翅片管的主要性能/翅片管的

翅片管作為換熱元件，長期工作於高溫煙氣的工況下，比如鍋爐換熱器用翅片管使用环境惡劣,高溫高壓且處於腐蝕性氣氛,這要求翅片管應具有很高的性能指標。1)、 防腐性能（Anti-corrosion）2)、 耐磨性能（Anti-wear）3)、 低的接觸熱阻(lower contact resistance)4) 、高的穩定性（Higher Stability）5) 、防積灰能力Finned tube, as a heat exchange element, works in high temperature flue gas for a long time. For example, finned tube used in boiler heat exchanger is in a bad environment, high temperature and pressure, and in a corrosive atmosphere, which requires finned tube to have a high performance index. 1), Anti-corrosion 2, Anti-wear 3, low contact resistance 4, high stability 5, and anti-ash accumulation ability.套裝翅片Suit fins套裝翅片工藝是預先用沖床加工出一批單個的翅片，然後用人工或機械方法，按一定的距高(翅距)，靠過盈將翅片套裝在管子外表面上。它是應用最早的一種加工翅片管的方法。由於套裝工藝簡單，技術要求不高，所用設備價格低廉，又易於維修，所以，至今仍有不少工廠在采用。此工藝是一種勞動密集型工藝方案，適合於一般小廠或鄉鎮企業的資金和技術條件。Set fin technology is to pre-process a batch of individual fins by punching machine, and then install the fins on the outside surface of the tube by interference according to a certain distance (fin spacing) by manual or mechanical method. It is the earliest method of finned tube processing. Because of its simple process, low technical requirements, low cost of equipment and easy maintenance, many factories are still using it. This process is a labor-intensive process plan, which is suitable for the capital and technical conditions of general small factories or township enterprises.用人工方法套裝的稱為手工套裝。它是借助工具，依靠人的力量將翅片一個個壓入的。這種方法因為翅片的壓入力有限，故套裝的過盈量小，翅片容易產生松動現象。The manual method is called a handmade suit. It relies on tools to rely on the power of human beings to press the fins one by one. Because of the limited pressure of the fins, the interference of the suit is small and the fins are easy to loosen.機械套裝翅片是在翅片套裝機上進行的。由於翅片壓入是靠機械沖擊力或液體壓力，壓入力大，所以，可采用較大的過盈量。翅片和管子之間的結合強度高，不易松動。機械傳動的套裝機生產率高，但噪音大，安全性差，工人的勞動條件欠佳。液壓傳動的雖然不存在上述問題，但設備價格較貴，對使用維修人員的技術要求較高，其生產率也低些。Mechanical fins are made on finned sets. Because the fin is pressed by mechanical impact force or liquid pressure, the pressure is large, so a larger interference can be used. The bonding strength between fins and pipes is high and it is not easy to loose. The mechanical transmission machine has high productivity, but the noise is high, the safety is poor, and the workers' working conditions are not good. Although there is no such problem in hydraulic transmission, the price of the equipment is relatively expensive, the technical requirements for the use of maintenance personnel are higher, and the productivity is lower.鑲嵌式螺旋翅片Mosaic spiral fin鑲嵌式螺旋翅片管是在鋼管上預先加工出一定寬度和深度的螺旋槽，然後在車床上把鋼帶鑲嵌在鋼管上。在纏繞過程中，由於有一定的預緊力，鋼帶會緊緊地勒在螺旋槽內，從而保證瞭鋼帶和鋼管之間有一定的接觸面積。為瞭防止鋼帶回彈脫落，鋼帶的兩端要焊在鋼管上。為瞭便於鑲嵌，鋼帶和螺旋槽間應有一定的側隙。如果側隙過小，形成過盈，則鑲嵌過程難以順利進行。此外，纏繞的鋼帶總會有一定的回彈，其結果使得鋼帶和螺旋槽底面不能很好的接合。鑲嵌翅片可在通用設備上進行，費用不高，但是工藝復雜生產效率低。The inlaid spiral finned tube is a spiral groove with a certain width and depth pre-processed on the steel pipe, and then the steel strip is inlaid 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 two ends of the steel strip must be welded on the steel pipe. In order to facilitate the mo印花地坪saic, there should be some backlash between the steel strip and the spiral groove. If the backlash is too small to form interference, the mosaic process is difficult to carry out smoothly. In addition, the winding steel strip will always have a certain rebound, the result of which makes the bottom of the steel strip and spiral groove can not be well joined. The embedded fins can be carried out on the general equipment, and the cost is not high, but the process is complex and the production efficiency is low.釬焊螺旋翅片管Brazed finned tube釬焊螺旋翅片管的加工分兩步進行。首先，將鋼帶平面垂直於管子軸線按螺旋線方式纏繞在管子外表面上，並把鋼帶兩端焊在鋼管上固定，然後為消除鋼帶和鋼管接觸處的間隙，用釬焊的方法將鋼帶和鋼管焊在一起。The processing of brazed finned tube is divided into two steps. Firstly, the steel strip is spirally wound on the outside surface of the pipe perpendicular to the axis of the pipe, and the two ends of the steel strip are welded on the steel pipe. Then, in order to eliminate the gap between the steel strip and the steel pipe, the steel strip and the steel pipe are welded together by brazing.此種方法因其造價昂貴，故常用另一種方法，即將纏好鋼帶的管子放進鋅液槽內進行整體熱鍍鋅來替代。采用整體熱鍍鋅雖然鍍液不見得能很好地滲進翅片和鋼管之間極小的間隙，但在翅片外表面和鋼管外表面卻形成瞭一個完整的鍍鋅層。采用整體熱鍍鋅的螺旋翅片管，因為受到鍍鋅層厚度的限制(鍍鋅層厚時，鋅層牢固性差，易脫落)，加之鋅液不可能全部滲入間隙內，所以，翅片與鋼管的結合率仍不高。另外，鋅的傳熱系數比鋼小（約為鋼的78%），故傳熱能力低。鋅在酸及堿、硫化物中極易遭受腐蝕，因此，用鍍鋅螺旋翅片管不適於制作空氣預熱器(回收鍋爐煙氣餘熱)。Because of its high cost, this method is often replaced by another method, that is, the tube wrapped with the steel strip is put into the zinc bath for overall hot-dip galvanizing. Although the whole hot dip galvanizing bath can not penetrate into the very small gap between the fin and the steel tube, a complete galvanizing layer is formed on the outer surface of the fin and the steel tube. The spiral finned tube with integral hot-dip galvanizing is limited by the thickness of galvanized layer (when the galvanized layer is thick, the firmness of the galvanized layer is poor and easy to fall off), and the zinc solution can not all infiltrate into the gap, so the bonding rate between the fin and the steel tube is still not high. In addition, the heat transfer coefficient of zinc is smaller than that of steel (about 78% of steel), so the heat transfer ability is low. Zinc is easily corroded in acid, alkali and sulfide. Therefore, galvanized spiral finned tube is not suitable for making air preheater (recovery of waste heat from boiler flue gas).高頻焊螺旋翅片High frequency welded spiral fins高頻高頻焊螺旋翅片管是目前應用最為廣泛的螺旋翅片管之一，現廣泛應用於電力、冶金、水泥行業的餘熱回收以及石油化工等行業。高頻焊螺旋翅片管是在鋼帶纏繞鋼管的同時High frequency and high frequency welding spiral finned tube is one of the most widely used spiral finned tubes at present. It is widely used in power, metallurgy, cement industry, waste heat recovery and petrochemical industry. High frequency welded spiral finned tube is used for winding steel pipes at the same time.，利用高 頻 電流的集膚效應和鄰近效應，對鋼帶和鋼管外表面加熱，直至塑性狀態或熔化，在纏繞鋼帶的一定壓力下完成焊接。這種高頻焊實為一種固相焊接。它與鑲嵌、釬焊(或整體熱鍍鋅)等方法相比，無論是在產品質量（翅片的焊合率高，可達95%），還是生產率及自動化程度上，都是更為先進。Using skin effect and proximity effect of high frequency current, the outer surface of steel strip and steel pipe is heated until plastic state or melting, and welding is completed under certain pressure of winding steel strip. This high frequency welding is actually a solid phase welding. Compared with mosaic, brazing (or whole hot dip galvanizing) and other methods, it is more advanced in product quality (high bonding rate of fins, up to 95%), productivity and automation.三輥斜軋整體型螺旋翅片管Three roll skew rolling integral spiral finned tube三輥斜軋整體型螺旋翅片管Three roll skew rolling integral spiral finned tube三輥斜軋整體型螺旋翅片管Three roll skew rolling integral spiral finned tube三輥斜軋整體型螺旋翅片管其生產原理為：在光管內襯一芯棒，經軋輥刀片的旋轉 帶動，無縫鋼管通過軋槽與芯頭組成的孔腔在其外表面上加工出翅片。這種方法生產出的翅片管因基管與外翅片是一個有機的整體,因而不存在接觸熱阻損失的問題,具有較高的傳熱效率。三輥斜軋法與焊接法相比,該生產線具有生產效率高,原材料耗用低,且生產的翅片管換熱率高等優點。The production principle of three-roll cross-rolling integral spiral finned tube is as follows: a mandrel is lined in the optical tube, driven by the rotation of the roll blade, and the fins are processed on the outer surface of the seamless steel tube through the hole cavity composed of the groove and the mandrel. The finned tube gene tube and outer fin produced by this method are an organic whole, so there is no problem of contact thermal resistance loss, and it has high heat transfer efficiency. Compared with the welding process, the three-roll cross rolling process has the advantages of high production efficiency, low consumption of raw materials and high heat transfer rate of finned tubes.目前三輥斜軋整體型螺旋翅片管技術已成功應用於翅片為銅、鋁的單翅片管或復合翅片管，或鋼質的低翅片管；鋼質整體型翅片管目前市場上多見為低翅片管，整體型高翅片管其材質多為鋁、銅等，一般是冷軋成型。At present, three-roll cross-rolling integral spiral finned tube technology has been successfully applied to single or composite finned tubes with copper or aluminium fins, or steel low finned tubes; steel integral finned tubes are mostly low finned tubes in环氧地坪 the market at present, and integral high finned tubes are mostly made of aluminium and copper, generally cold-rolled forming.辛苦整理.轉載請註明http://www.wxsxsjx.com