TH28993B - Method for producing economical U-shaped bent heat transfer tubes - Google Patents

Abstract

DC60 (15/02/53) This invention relates to a method for producing U-shaped bent tubes (U-shaped tubes) from nonferrous metals immediately followed by a pipe production line. for such purposes according to this invention Methods for producing U-shaped pipes bent from nonferrous metals followed by pipe production lines. It consists of the following sequence of steps: a) unfolding the stretched tubing material from a basket winder, b) straightening the stretched tubing material, c) annealing and subsequent cooling of the stretched tube material Before or after cutting to the initial length for tubes that are bent in a U shape for splitting Tube section, d) U-shape bending of tube section. This invention also involves a production line for producing U-shaped tubes. This invention relates to a method for producing tubes. U-shaped bending (U-shaped tube) from nonferrous metals immediately followed by the pipe production line. for such purposes according to this invention Methods for producing U-shaped pipes from nonferrous metals followed by pipe production lines. It consists of the following sequence of steps: a) unfolding the stretched tubing material from the basket winder; b) straightening the stretched tubing material; c) the annealing and subsequent cooling to the tubing material that is stretched before or after cutting to the initial length of the tube is bent into a U-shape to separate the pipes, d) bending of pipes into a U shape. This invention also involves a production line for the production of pipes that are bent into a U shape.

Claims (6)

1. A method for producing U-shaped (20) bent tubes from non-ferrous metals followed by a pipe production line. The sequence procedure is as follows: a) Unrolling the stretched woven material (1) from the tabbed winding machine (2), b) making the material used for the tubing. Stretched (1) in a straight line, c) annealing and subsequent cooling of the drawn tube material (1) before or after cutting to the initial length for separation. It is the pipe body parts (10), for pipe body (20) to be cut into U shape, d) various pipe body parts (10) bend to U shape. 2. A method for manufacturing a U-shaped pipe in accordance with claim 1, where it is characterized by whether the material of the drawn pipe is stretched (1) or the tubular section (10). The quality is controlled in steps a) to c) in any of the steps. 3. Method for manufacturing U-shaped pipes according to claim 1 or 2, which have the characteristics that The material from which the stretched tube (1) is made is covered with an inert gas 4. Method for manufacturing U-shaped tubes according to claim 3, which has the characteristics that Inert gas flows counter to the direction in which The material from which the stretched tube (1) is stretched is unfolded. 5. Method for producing U-shaped tubes according to one of claim 2 to 4. Where there is a characteristic that After cut-to-length for tubing (10), the incomplete tube segments are further categorized after quality control. 6. Methods for fabricating bent tubes. Is a U-shaped according to one of the claims 1 to 5 Where there is a characteristic that After cutting lengths for parting Tubular sections (10) are cleaned inside and / or outside. 7.Method for manufacturing U-shaped tubes according to Claim 1 to 6. Where there is a characteristic that If not, the stretched tube material (1) is forged to be softened in a continuous operation. The section (10) of the segmented pipe is softened in shift work. 8. What is the method for producing U-shaped tubes according to claims 1 to 7? One Where there is a characteristic that After straightening And before putting it to the test The material from which the drawn pipe is drawn (1) is introduced into the process of forming a welded joint. 9. Method for producing U-shaped tubes according to one of claims 1 to 4. Where there is a characteristic that When the stretched tube material (1) is annealed before cutting to length for use in the tubing section (10), the tube material is Pull stretch (1) will be placed on Basket-shaped rollers and are further processed on one or more bending equipment (21) 1 0. Production line for producing U-shaped tubes from metal. Outside the steel group immediately followed by a pipe production line Where there is a) basket-shaped winding machine Where there is an unfold device (2) for the stretched tube material (1), b) the straightening facility for the stretched pipe material ( 1) unfolded And testing facilities (3), c) the annealing unit (4) and the subsequent cooling unit (5) for the material used for the stretched pipe (1). Before or after the cutting unit (11) to separate into a tubular segment to cut the initial length or to a different starting length for a pipe bent to a U shape (20). , D) bending equipment (21) for bending a section of a pipe into a U-shape 1 1. a production line for the production of tubes that have been bent into a U-shape according to claim 10 Which has the characteristics that To cover the stretched pipe material (1), an inert gas delivery unit (7) is provided at one end of the pipe. The suction tool (8) is also located at the other end. 1. 2. Production line for producing U-shaped tubes according to claim 10 or 11, where they are unique. That The cutting unit (11) is followed by the parting tool (12) for different lengths of the tubing section (10). 3.Production line for producing U-shaped tubes as per Claim 10 to 12. Where there is a characteristic that Cleaning tools (13) are placed downstream of the cutting unit (11) or optionally. Downstream of the disassembling apparatus (12) 1 4. Production line for producing U-shaped tubes according to any Claim 10 to 13. Where there is a characteristic that The annealing unit (4) for the annealed pipe material (1) to be operated in continuous operation or for the sectionalized tubing (10) in the furnace shift operation. Inductive, Radiated or Conductive 1 5.Production line for producing U-shaped tubes according to any Claim 10 to 14. Where there is a characteristic that The straightening facility (3) is followed by the tool to create a line (9) for the material from which the tube is stretched (1) 1. 6.Use of a U-shaped (20) bent tube for a heat exchanger.