Pressure die used for dust-free drawing aluminum-coated steel

[0021] Example

[0022] Such as Figure 4 As shown, the pressure die 4 is cylindrical, and the two ends of the pressure die 4 are equipped with cemented carbide 5. The angle of the inner hole of the cemented carbide 5 at one end in the line direction is 60o, and the other end of the cemented carbide 5 The angle of the inlet direction is 6o, and the angle of the outlet direction of the cemented carbide 5 at the other end is 80°. A transition joint 2 is installed between the cylindrical pressure die 4 and the wire drawing die 1. The transition joint 2 is olive-shaped. In order to ensure a firm connection between the transition joint and the wire drawing die, and the lubricating medium does not leak, the transition joint 2 is The taper is set to 82o. The inner hole diameter of the transition joint 2 is 0.10-0.20mm larger than the inner hole diameter of the pressure die 4. In order to ensure the coaxiality of the transition joint and the pressure die and the drawing die during the overall installation to ensure the smooth drawing, a cage is installed on the pressure die and the transition joint. The gap between the small hole D1 on the cage 3 and the outer circle of the transition joint 2 is 0.05-0.08mm, the gap between the large hole D and the outer circle of the pressure die 4 is also 0.05-0.08mm, and the small hole D1 of the cage 3 The coaxiality between the large hole D and the large hole D is required to be 0.015mm, and the perpendicularity between the A surface and the large hole D is 0.02mm. After testing, the cage with this size requirement can meet the production requirements.

[0023] Installation method:

[0024] The pressure die 4 is firmly installed on the holder 3, and then the transition joint 2 is placed in the holder 3 to ensure that the transition joint 2 is not deflected. Connect the connected pressure die 4, the cage 3, and the transition joint 2 to the wire drawing die 1, and install a large pressing force to compress them.

[0025] This kind of pressure die for dust-free drawing aluminum-clad steel can ensure the clearance required for dust-free drawing of aluminum-clad steel. The installation of the structure can be in place at one time and will not produce transition joints that affect the drawing of aluminum-clad steel. Phenomenon: The inner hole of the transition joint is a bit larger than the inner hole of the normal pressure die, so even a little deformation under a large compression force will not affect the normal drawing of aluminum clad steel, and the life of the die is extended, even if the transition joint is deformed If it is too large, only one connector needs to be replaced, which has a low cost and can save a lot of costs.