Cold-drawing die

A technology of drawing dies and drawing die sets, which is applied in the direction of wire drawing dies, etc., can solve the problems of inaccurate cross-bar twist spacing, heavy waste of talc powder, short service life, etc., and achieve smooth surface forming, high product quality and accurate spacing. Effect

Inactive Publication Date: 2010-08-04
XINXING DUCTILE IRON PIPES CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the international and domestic steel grating industry adopts direct current welding. The crossbars required by this welding method are high-wire coil elements (the material is Q195~Q235 billet and linear wire rod (rebar) rolled at high speed by rolling mill. ) is cold-drawn and stretched into twist-shaped steel bars. Before 2004, the steel grid industry used square drawing dies and rotating devices for production. The disadvantages of this square drawing dies: 1. Short service life, 2. Waste of talcum powder , 3. It needs to be twisted into a twisted shape with an additional rotating device. 4. The spacing between the horizontal bar twists is not accurate

Method used

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Embodiment Construction

[0010] As shown in the accompanying drawings, the present invention includes a die set 1 and a die 2, the die set 1 has a die groove and a conical outlet 6 communicating with the die groove, and the die groove is interference fit with the die 2. The drawing die 2 has a drawing die hole, and the drawing die hole is a transition section 3, a sizing section 4 and a talcum powder export section 5 successively from the entrance to the exit. The transition section 3 is a trumpet-shaped arc surface, which can prevent the surface of the drawing die 2 from being burned due to the friction of the high-wire disk element due to lack of talcum powder. The sizing section 4 is a twist-shaped arc. The outlet section 5 of the talcum powder is a trumpet-shaped arc surface, and the outlet section 5 of the talcum powder is the discharge port 6 of the die sleeve 1 . The material of the die cover 1 is Q235-A. The material of the drawing die 2 is YG8 cemented carbide, which is formed by sintering...

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Abstract

The invention relates to a cold-drawing die, and can cold-draw and draw an altitude wire rod into a hemp flower-shaped reinforcing steel bar. The cold-drawing die comprises a drawing die sleeve and a drawing die; the drawing sleeve is provided with a drawing die groove and a cone-shaped discharge hole communicated with the drawing die groove; the drawing die groove is in interference fit with the drawing die internally; the drawing die is provided with a drawing die hole; the drawing die hole is provided with a transition section, a sizing section and a guide section of talcum powder from the inlet to the outlet; the transition section is a flared arc plane, can prevent the altitude wire rod from rubbing to burn out the surface of the drawing die because of the shortage of the talcum powder; the sizing section is a hemp flower-shaped arc plane; and the guide section of the talcum powder is a flared arc plane, and the guide section of the talcum powder is externally provided with a discharge hole of the drawing die sleeve. The drawing die does not need to add a rotary apparatus, and has simple structure, accurate space between the cross-bar hemp flowers, long service life and less consumption of the talcum powder.

Description

technical field [0001] The invention relates to a cold-drawing die, which can cold-draw and stretch high-wire coil elements into twist-shaped steel bars. Background technique [0002] At present, most of the international and domestic steel grating industry adopts direct current welding. The crossbars required by this welding method are high-wire coil elements (the material is Q195~Q235 billet and linear wire rod (rebar) rolled at high speed by rolling mill. ) is cold-drawn and stretched into twist-shaped steel bars. Before 2004, the steel grid industry used square drawing dies and rotating devices for production. The disadvantages of this square drawing dies: 1. Short service life, 2. Waste of talcum powder , 3. Additional rotating devices are needed to twist into a twist shape. 4. The spacing between the crossbar twists is not accurate. Contents of the invention [0003] In order to overcome the disadvantages of the prior art, the present invention provides a cold-drawi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C3/02
Inventor 杨金军
Owner XINXING DUCTILE IRON PIPES CO LTD
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