H-shaped copper pipe drawing die assembly
A drawing die and pipe die technology, applied in the field of H-shaped copper pipe drawing die assemblies, can solve the problems of difficulty in making special-shaped pipes, inability to draw small copper pipes, strength of small pipe fittings, etc. The effect of smooth drawing and precise forming
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[0037] see Figures 1 to 7 As shown, the present invention provides a technical solution: an H-shaped copper tube drawing die assembly, comprising:
[0038] Two sets of drawing die assemblies, one set of drawing die assemblies is assembled by the first tube drawing die 1 and the large lining core 3, and the other set of drawing die assemblies is the second tube drawing die 2 and the small lining core 32 are assembled together;
[0039] The first tube-drawing die 1 is a tube-drawing concave die with an H-shaped die hole in the middle, and the die hole penetrates the left and right sides of the first tube-drawing die 1;
[0040] The second tube-drawing die 2 is also a tube-drawing concave die with an H-shaped die hole in the middle, and the die hole penetrates the left and right sides of the second tube-drawing die 1;
[0041] The shape and size of the inner wall of the female die of the second tube-drawing die 2 is the same as the preset external shape and size of the cross-se...
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