Bakar cijev is one of the fastest razvoj proizvodi in China bakar obrada materijal proizvodnja. Drawing is the most commonly used method of tube processing, is under the action of external forces, forcing the the metal billet through the die hole, in order to obo the corresponding shape and products of plastic processing methods, with energy-saving and efficient features, but also can be used to produce a variety of cross-presjek oblici of žica, bar, cijev i profil. Pipe drawing can be divided into no core head drawing (empty drawing) and core head drawing. The latter, according to the fixed form of the the head head is divided into fixed head head drawing, long head head drawing and swimming core head drawing.
1. Bakar cijev treba a a certain snaga i zid debljina, can withstand the tlak of the hlađenje medium (takav as Freon), to prevent its leakage.
2. Copper tube should have a a good metalurški organizacija and dobar overall mehanički svojstva, no metalurški defekti (tak as inkluzije, poroznost), and has the right grain size, with a good match of strength and plastičnost, so that in the manufacturing process of the two devices to withstand the smooth bending, expanding and flaring and other additions.
3. Bakar cijev trebala imati good zavarivanje performanse. Lemljenje performanse je prva povezana the kemijska sastav of the bakar cijev, especial the the appropriate fosfor sadržaj, and surface conditions, especial cleanliness, and the tube is also an important guarantee of the safe operation of the air conditioning machine.
4. Bakar cijev cijev treba imati dobar toplinski prijenos performanse. It does ne refer to toplinska vodljivost of the metal itself, but with the shape of the tube surface and the heat transfer koeficijent the the copper tube tube and air thresh related to the internal threaded copper tube than the heat transfer koeficijent the the light tube 2-3 times higher, kolektivno referred to as high-efficiency heat transfer of copper tube.
Tradicionalno bakar cijev proizvodnja proces (ekstruzija metoda) je ekstrudirano od kontinuirano lijevanje billet ingots into gredice, i onda hladno valjano, izvučeno u cijevi. rani 1990-ih lijevanje i valjanje metoda (tj. , lijevanje gredice + three-roll slanting + crtanje of the pipe proces) pojavilo se, lijevanje i valjanje metoda of produkcija of čelik tubing has been wide used, praksa shows that the casting and Rolling Method of Production of Copper Tubing And Stability And Lower Manufacturing costs, Low Energy Consumption, High Efficiency, To Meet The Demanding Requirements of The Air-conditioning and Recoolgeration industry. Zrak klimatizacija i hlađenje industrija zahtjevne zahtjevne zahtjevne.
