Brief Introduction
Tungsten Carbide Drawing Die for Tube and Pipe Drawing
Tube or Pipe Drawing die is used for metalworking process to make ferrous and non-ferrous metal tubes, for example, copper tube, stainless steel tube, aluminum tube, etc. Size a tube by reducing the cross section, from a large diameter tube into a smaller one, by drawing the tube through a die. There are different ways to drawing tube by using different kinds of dies: tube dies with plug; sink dies.
Types:
Tungsten carbide tube drawing die (1 to 80 mm);
PCD tubing die.( 0.1 to 35 mm)
Features:
1. Great precision and accuracy of dimension;
2. Uniform tube roundness and wall thickness;
3. Minimize material usage;
4. Tight dimension tolerances;
5. Smooth tubing surface without striples and scratches;
Application:
Used in various applications, aircraft hydraulic lines, diesel fuel lines, thermocouple sheathing, medical tubing (stents, endoscopes), chromatography, and semiconductor manufacture, etc.Tubing dies are frequently used for drawing:
Copper tubing;
Brass tubing;
Stainless steel tubing;
Aluminum tubing;
Steel tubing;
Nitinol tubing;
Bronze tubing;
Precious metal tubing;
Special alloy and high-performance alloy tubing.Plug Tube Dies
Plug tube dies are used to reduce the wall thickness and the outer dimension of the tubing.
* Floating plug tube drawing
Floating plug tube drawing, also known as floating mandrel drawing, uses a mandrel that is not anchored whatsoever to shape the inner diameter of the tube. The mandrel is held in by the friction forces between the mandrel and the tube. This axial force is given by friction and pressure. The greatest advantage of this is that it can be used on extremely long lengths. This process is often used for oil-well tubing
* Fixed plug tube drawing
Fixed plug drawing, also known as stationary mandrel drawing, uses a mandrel at the end of the die to shape the inner diameter of the tube. This process is slow and the area reductions are limited, but it gives the best inner surface finish of any of the processes.
Sink Dies for Tube Drawing
Sink dies are used to reduce the outer dimension of a tube.
Tube sinking, also known as free tube drawing, reduces the diameter of the tube without a mandrel inside the tube. The inner diameter is determined by the inner and outer diameter of the stock tube, the outer diameter of the final product, the length of the die landing, the amount of back tension, and the friction between the tube and the die. This type of drawing operation is the most economical, especially on thick-walled tubes and tubes smaller than 12 mm (0.47 in) in diameter but does not give the best surface finish.
