Drawing die and drawing system for metal wire
A metal wire and mold technology, applied in the direction of wire drawing die, etc., can solve problems such as inappropriate compression angle, difficulty in drawing metal wire performance, and short service life of molds
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Embodiment 1
[0053] The present embodiment provides a drawing die 3, such as figure 1 As shown, it includes a conical inlet zone 31, a lubricating zone 32, a conical compression zone 33, a cylindrical sizing zone 34 and a conical outlet zone 35 connected in sequence by a circular arc transition;
[0054] The conical inlet zone 31, lubricating zone 32, conical compression zone 33, cylindrical sizing zone 34, and conical outlet zone 35 all have inner holes for metal wires to pass through;
[0055] The diameter of the inner hole gradually decreases from the entrance of the conical inlet zone 31 to the exit of the compression zone 33, and gradually increases from the entrance of the conical exit zone 35 to its exit;
[0056] The angle of the taper angle of the mold gradually decreases from the tapered entrance area 31 to the compression area 33, and the angle of the taper angle (compression angle) 2a of the compression area 33 is 5°-12°. For example, 5°, 5.3°, 5.8°, 6°, 6.5°, 7°, 7.2°, 7.8°, ...
Embodiment 2
[0066] The invention provides a metal wire drawing system, such as figure 2 and image 3 shown, including
[0067] Wire pay-off device 1, used for winding the first metal wire to be drawn;
[0068] The drawing box body 2 has a cavity, a wire inlet and a wire outlet;
[0069] A support seat 7 is obliquely arranged on the inner wall of the drawing box 2, and a plurality of installation holes 71 are opened along its length direction, and any one of the drawing dies 3 recorded in Embodiment 1 is arranged in the installation holes 71;
[0070] The pulling device is used to continuously extract one end of the first metal wire from the pay-off device 1, and is drawn into a second metal wire of a required diameter through the drawing die 3;
[0071] The wire take-up device 4 is used to collect the drawn second metal wire.
[0072] The metal wire drawing system of this structure is provided with a plurality of installation holes 71 on the support base 7, and any one of the drawing...
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