CN102989804A

CN102989804A - Production method of high-rib opening section bar

Info

Publication number: CN102989804A
Application number: CN2012105666005A
Authority: CN
Inventors: 孟健; 王雷刚; 尹飞; 陈珍山
Original assignee: YANGZHOU HONGFU ALUMINIUM INDUSTRY Co Ltd
Current assignee: YANGZHOU HONGFU ALUMINIUM INDUSTRY Co Ltd
Priority date: 2012-12-25
Filing date: 2012-12-25
Publication date: 2013-03-27
Anticipated expiration: 2032-12-25
Also published as: CN102989804B

Abstract

A production method of a high-rib opening section bar belongs to the field of section bar machining, particularly a production method of a high-rib opening aluminium alloy section bar and a mold technology. According to the production method, extrusion production is carried out after an aluminium alloy bar subjected to homogenization treatment, an extrusion container and a mold are respectively heated; and the production method is characterized in that a pre-running mold with an arched bypassing bridge is used for production in the extrusion process. The production method has the advantages of being capable of well solving the problem that a cantilever part of the mold is crushed and cracks prematurely in the extrusion process, well prolonging the service life of the mold and particularly suitable for extruding the high-rib opening section bar.

Description

A kind of production method of high muscle opening class section bar

Technical field

The invention belongs to the section bar manufacture field, the particularly production method of high muscle opening class aluminium alloy extrusions, and Tool and Die Technology.

Background technology

Aluminium alloy extrusions has use, the huge market demand, particularly high muscle opening class section bar because it has a series of superiority in a lot of fields.All adopt the production of water conservancy diversion mould for opening profile in the market, but find in the actual production to adopt water conservancy diversion mould production effect bad for high muscle opening class section bar, main cause is that water conservancy diversion mould bracketed part is long, the stressed complexity of mould bracketed part in extruding process, bracketed part is easy to fracture and pressure is collapsed), cause the initial failure of mould.

Summary of the invention

The object of the invention provides a kind of production method of high muscle opening class section bar, to solve existing water conservancy diversion mould mould bracketed part easy fracture and press the problem of collapsing in extruding process.

The present invention includes aluminium alloy bar, recipient and the mould that to process through homogenising respectively after the preheating, push production, it is characterized in that in described extrusion process, adopting the vacation shunting mould with arch shunting bridge to produce.

Vacation shunting mould with arch shunting bridge of the present invention mainly is comprised of upper die and lower die, be distributed with tap hole and shunting bridge on the patrix, the cambered surface that arches upward to top centered by the bottom surface of shunting bridge, counterdie are provided with seam chamber, work band and the empty cutter that matches with tap hole.

The present invention is the false divergent die without core, owing to increase the shunting bridge at cantilever one end, so that the stressed of bracketed part become simply supported beam by original cantilever beam, stressed more balanced, the force-bearing situation of the domes of shunting bridge lower end is similar to the static determinacy arch, by structural mechanics as can be known, in forming process, mould bridge lower end not only is subject to axial shearing force, also be subject to simultaneously compression radially, the force-bearing situation of mould bridge is improved, and has reduced the mould bridge and has cracked, the phenomenon of fracture is so played the effect that significantly improves to the mold use life-span.

The present invention can solve the too early problem of collapsing and rupturing of pressing of mould bracketed part in the extrusion process well, can prolong preferably the mold use life-span.Be particularly suitable for extruding high muscle opening class section bar.

In addition, the preheat temperature of bar of the present invention is 490 ℃, and the preheat temperature of recipient is 450 ℃, and the preheat temperature of mould is 470 ℃.

Description of drawings

Fig. 1 is a kind of section structure schematic diagram of high muscle opening class section bar.

Fig. 2 is the schematic top plan view of part of the upper die.

Fig. 3 is that the A-A of Fig. 2 is to cutaway view.

Fig. 4 be Fig. 2 B-B to partial sectional view.

Fig. 5 is the schematic top plan view of counterdie.

Fig. 6 is that the C-C of Fig. 5 is to cutaway view.

Fig. 7 is the overall structure schematic diagram of the mould of upper die and lower die matched moulds formation.

The specific embodiment

The high muscle opening of the present invention as shown in Figure 1 class section bar, section is the mountain font, and the rib height is larger, belongs to high muscle opening class part.

One, for the production of the mould with the high muscle opening of the font of going up a hill class section bar:

As shown in Figure 7, the vacation shunting mould that has an arch shunting bridge mainly is comprised of patrix 1 and counterdie 2.

Shown in Fig. 2,3,4, be distributed with three tap holes 11 on the patrix 1, correspondingly be provided with two shunting bridges 12, each shunts the cambered surface 13 that arches upward to top centered by the bottom surface of bridge 12.

Shown in Fig. 5,6, counterdie 2 is provided with the font seam chamber, mountain 21 of matching with mountain font tap hole 11, work and is with 22 and empty cutter 23.

Two, the high muscle opening class section bar concrete technology as an example of the 6063T5 aluminium alloy example:

It is alloy that the 6063T5 aluminium alloy belongs to Al-Mg-Si, and except aluminium, all the other compositions are as follows:

Si：0.20%-0.6%、Fe：0.35%、Cu：0.10%、Mn：0.10%、Mg：0.45%-0.9%、Cr：0.10%、Zn：0.10%、Ti：0.10%。

1,6063T5 aluminium alloy strand being carried out homogenizing annealing processes: annealing temperature is 560 ℃, and insulation 6h is cooled fast to 250 ℃ with powerful air-flow afterwards, and cooling velocity is 60 ℃/min, stops afterwards 0.5h, and water is cooled to 50 ℃ again.Homogenising makes the institutional framework of material even after processing, and is conducive to improve the life-span of mould and the surface quality of product in extruding process.

2, with blank heating to 490 ℃, recipient is heated to 450 ℃, with upper and lower mould matched moulds, and mold heated to 470 ℃, the temperature of the section bar port of export is not less than 500 ℃.

3, strand is divided into three parts behind the shunting bridge of flowing through under the pressure of recipient, passes through afterwards the seam of HTHP high vacuum in the seam chamber 21 of counterdie, and the work band 22 of flowing through is again extruded mountain font section bar semi-finished product from empty cutter 23.

4, the half-finished head of excision and afterbody carry out solution treatment and artificial aging and process (200 ℃/2.5 h).What solution treatment was adopted is air-cooled online.

5, the actual size intercepting by workpiece obtains the high muscle opening class section bar that section is the mountain font.

Claims

1. the production method of one kind high muscle opening class section bar, comprise that aluminium alloy bar, recipient and the mould that will process through homogenising are respectively after the preheating, push production, it is characterized in that in described extrusion process, adopting the vacation shunting mould with arch shunting bridge to produce.

2. the production method of described high muscle opening class section bar according to claim 1, it is characterized in that described vacation shunting mould with arch shunting bridge mainly is comprised of upper die and lower die, be distributed with tap hole and shunting bridge on the patrix, the cambered surface that arches upward to top centered by the bottom surface of shunting bridge, counterdie are provided with seam chamber, work band and the empty cutter that matches with tap hole.

3. the production method of described high muscle opening class section bar according to claim 1 and 2, the preheat temperature that it is characterized in that described bar is 490 ℃, and the preheat temperature of recipient is 450 ℃, and the preheat temperature of mould is 470 ℃.