Extrusion die for aluminum profile production

Abstract

The utility model discloses an extrusion die for aluminum profile production, which comprises a front die and a rear die, and the rear surface of the rear die is attached to the front end face of a round bar; a sunken area which is sunken inwards is arranged on the rear surface of the rear mold, and a plurality of layers of surfacing rings which are sequentially overlaid from the circle center to the outside are arranged in the sunken area; the top of each surfacing ring protrudes out of the corresponding concave area, the multiple layers of surfacing rings are arranged on the rear surface of the rear die, the surfacing process is a welding process of depositing a metal layer with the wear resistance, corrosion resistance, heat resistance and the like on the surface or the edge of a workpiece, and in view of the wear resistance, corrosion resistance and heat resistance of surfacing, the wear resistance of the die is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum profile processing devices, in particular to an extrusion die for aluminum profile production. Background Art

[0002] Aluminum alloy molds are usually made of H13 mold steel, which is heat treated to obtain a hardness of HRC48-52 and then processed into an extrusion mold for a specific cavity.

[0003] The aluminum alloy extrusion die consists of a front die and a rear die. During the extrusion process, the heated aluminum rod is attached to the rear die surface, and then the aluminum ingot is extruded into shape through the combined action of the main cylinder and the side cylinder. At the end of the extrusion of an aluminum rod, a residual disc will be attached to the rear die surface. At this time, the residual disc needs to be scraped off with the scraper of the extruder (refer to Figure 4 As shown), in order to improve the wear resistance of the mold, carburizing or nitriding treatment is used.

[0004] Although the above method can enhance the wear resistance of the mold, it requires the consumption of a large amount of synthetic materials containing nitrogen and carbon components and requires the use of special equipment, which increases the cost investment.

[0005] The depth of the carburized layer is generally only 0.03mm to 0.08mm. A set of dies can only work continuously for 1 to 5 hours after each nitriding treatment, and needs to be disassembled for alkali etching, polishing and nitriding treatment. An extruder can produce for 24 hours and cannot work continuously. It is necessary to replace 5 to 25 sets of extrusion dies to produce 1 to 5 tons of profiles. Moreover, after each set of extrusion dies is repeatedly nitrided, the deviation value of the tolerance of the extrusion die itself increases, affecting the production quality of the profile. Utility Model Content

[0006] The utility model aims to provide an extrusion die for producing aluminum profiles to solve the above-mentioned problems.

[0007] The technical solution adopted by the utility model is: an extrusion die for producing aluminum profiles, comprising a front die and a rear die, wherein the rear surface of the rear die is in contact with the front end surface of a round bar material;

[0008] A recessed area recessed inward is provided on the rear surface of the rear mold, and multiple layers of surfacing rings are sequentially stacked from the center of the circle outward.

[0009] The top of the surfacing ring protrudes from the recessed area.

[0010] Optionally, the top of the surfacing ring protrudes from the recessed area by 1-3 mm.

[0011] Optionally, the top of the surfacing ring is a plane.

[0012] Beneficial effects:

[0013] A multi-layer cladding ring is provided on the rear surface of the rear mold. The cladding process is a welding process in which a layer of metal layer with wear-resistant, corrosion-resistant, heat-resistant and other properties is deposited on the surface or edge of the workpiece. In view of the wear-resistant, corrosion-resistant and heat-resistant properties of cladding, in order to improve the wear resistance of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figures 1 to 3 It is a structural schematic diagram of the utility model;

[0015] Figure 4 It is a schematic diagram of the process described in the background technology;

[0016] in:

[0017] 1- rear mold;

[0018] 2- front mold;

[0019] 1a-depression area, 1b-surfacing ring. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figures 1 to 3 , an extrusion die for producing aluminum profiles, comprising a front die 2 and a rear die 1, wherein the rear surface of the rear die 1 is in contact with the front end surface of a round bar material;

[0022] A recessed area 1a recessed inward is provided on the rear surface of the rear mold 1, and multiple layers of surfacing rings 1b are sequentially stacked from the center of the circle outward.

[0023] The top of the cladding ring 1b protrudes 1-3mm from the recessed area, and has more wear-resistant margin compared to the only 0.03mm to 0.08mm depth of the carburized layer. The cladding process is a welding process in which a layer of metal layer with wear-resistant, corrosion-resistant, heat-resistant and other properties is deposited on the surface or edge of the workpiece. The hardness of the layer can reach 58-62HRC, which is comparable to the hardness of the carburized layer and can obtain more wear-resistant margin, thereby increasing the practical life.

[0024] In order to facilitate contact with the front end surface of the round bar material, the top of the surfacing ring 1b is a plane.

[0025] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An extrusion die for producing aluminum profiles, characterized in that: It comprises a front die and a rear die, wherein the rear surface of the rear die is in contact with the front end surface of the round bar material; A recessed area recessed inward is provided on the rear surface of the rear mold, and multiple layers of surfacing rings are sequentially stacked from the center of the circle outward. The top of the surfacing ring protrudes from the recessed area.

2. An extrusion die for producing aluminum profiles as claimed in claim 1, characterized in that: The top of the surfacing ring protrudes from the recessed area by 1-3 mm.

3. An extrusion die for producing aluminum profiles as claimed in claim 2, characterized in that: The top of the surfacing ring is a plane.

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