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A kind of repairing method of cracked bridge of aluminum alloy extruding die and its repairing die

A repair method and extrusion die technology, which is applied in the repair of aluminum alloy extrusion dies and the field of aluminum alloy production equipment, to achieve good forming degree, improve metal flow, and reduce the force of bridge positions

Active Publication Date: 2018-04-24
GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP
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Problems solved by technology

[0003] The present invention aims to solve the problems described above

Method used

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0015] In order to make the repaired mold have sufficient support strength and enhance its service life, the present invention repairs the mold from the two aspects of reducing the force on the bridge and strengthening the bridge. While...

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Abstract

The invention provides a repairing method for bridge cracking of an aluminum alloy extrusion die and the die repaired through the method. The repairing method comprises the steps of (1) groove milling, (2) preheating, (3) bead welding, (4) thinning through cutting, (5) additional arrangement of supporting plates; (6) bridge settling and (7) quenching. By means of the repairing method for bridge cracking of the aluminum alloy extrusion die and the die repaired through the method, after the crack position of a bridge location is subjected to groove milling and bead welding filling, the supporting plates are additionally arranged on the two sides of the bridge location, welding is carried out synchronously, and the supporting strength of the bridge location of the die can be ensured while cracks are repaired; and besides, through real-time conical bridge settling and chamfering, metal flow is improved, and stress on the bridge location is further reduced. According to the die repaired through the repairing method, the bridge location is firm, the service life of the die is prolonged, the extrusion process is stable, and the profile molding degree is good.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy production equipment, in particular to the technical field of repairing aluminum alloy extrusion dies. Background technique [0002] During the use of aluminum alloy extrusion dies, bridges are often cracked due to high pressure or insufficient support strength of the bridge. In production, the welding crack repair method is generally used for aluminum alloy extrusion dies with cracked bridges, that is, the die is repaired by milling grooves around the die cracks and surfacing welding. Although this method can repair crack defects, the strength of the mold is greatly reduced and cannot be restored to the strength when the mold is intact, thus greatly affecting the service life and effect of the mold. Contents of the invention [0003] The present invention aims to solve the problems described above. An object of the present invention is to provide a method for repairing cracked bridges ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/02B21C25/10
CPCB21C25/02B21C25/10
Inventor 陈志刚陈力刘正林关挺辉刘建辉
Owner GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP
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