5-series L-shaped large-wall-margin profile extruding mold and manufacturing method thereof

Abstract

The invention discloses a 5-series L-shaped large-wall-margin profile extruding mold and a manufacturing method thereof and belongs to the technical field of an aluminum alloy extruding mold. The extruding mold consists of an upper die and a lower die which are connected with each other; the upper die is provided with an extrusion chamber and a plurality of flow separating bridges; the lower die is provided with a welding chamber and a working belt hole; the joint of the flow separating bridges is arranged in a manner of being deviated from the axial center of the upper die; one end, far away from the welding chamber, of the joint is provided with a fake die core; the fake die core is exposed out of the surface of a feeding end of the upper die; the vertical projection, on the lower die, of the fake die core covers one side of a relatively large L-shaped hole chamber of the working belt hole. The 5-series L-shaped large-wall-margin profile extruding mold disclosed by the invention is capable of solving the extrusion problem of a 5-series L-shaped large-wall-margin profile; by adopting the extruding mold, the problems of flexure and twisting of the profile during an extrusion process can be solved, so the extrusion yield is increased, subsequent shaping workload is reduced, and the work efficiency is greatly improved; an analogue simulation method is used for replacing a mold testing step, so the economic efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy extrusion dies, and in particular relates to a 5-series L-shaped large-wall-thickness-difference profile extrusion die and a manufacturing method thereof. Background technique [0002] Such as figure 1 As shown, the existing L-shaped extrusion die usually adopts a flat die, and by modifying the length of the working belt and the shape of the diversion pit, such as figure 2 As shown, to meet the consistent flow rate of each position of the profile. However, because the fluidity of the 5-series aluminum alloy is poor, and its strength is higher than that of the 6-series aluminum alloy. If the traditional 6-series extrusion die is used to produce 5-series aluminum alloy profiles with a large wall thickness difference, the flow rate on the side with the larger wall thickness is faster, up to 50mm / s, while the flow rate on the side with the smaller wall thickness is slower , about 15mm / s. Th...

AI Technical Summary

Problems solved by technology

However, due to the poor fluidity of the 5-series aluminum alloy and its higher strength than the 6-series aluminum alloy

If the traditional 6-series extrusion die is used to produce 5-series aluminum alloy profiles with a large wall thickness difference, the flow rate on the side with the larger wall thickness is faster, up to 50mm / s, while the flow rate on the side with the smaller wall thickness is slower , about 15mm / s. Therefore, the product is prone to defects such as bending and twisting after extrusion. At the same time, if only through the adjustment of the working belt and the optimization of the diversion pit, the effect is still not obvious.

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