CN201030388Y

CN201030388Y - Aluminum alloy steel bar dies

Info

Publication number: CN201030388Y
Application number: CNU2007200228102U
Authority: CN
Inventors: 秦学慧; 孙志勇
Original assignee: Shandong Nanshan Aluminium Co Ltd
Current assignee: Shandong Nanshan Aluminium Co Ltd
Priority date: 2007-05-25
Filing date: 2007-05-25
Publication date: 2008-03-05
Anticipated expiration: 2017-05-25

Abstract

The utility model relates to an aluminum alloy bar die, belonging to the aluminum alloy bar die technological field. An aluminum alloy bar die is characterized of comprising a die sleeve 2, a die body 3, a die pad 4, and a back die pad 5, wherein the die sleeve 2 is orderly sleeved with the die body 3, the die pad 4, and the back die pad 5, inner diameters of a passage 8, a passage 9, and a passage 10 inside the die body 3, the die pad 4, and the back die pad 5 enlarge orderly, the inner diameter of the passage 8 inside the die body 3 is bigger than the diameter of the passage 11 the aluminum alloy bar passes inside the die body 3, the upper portion of the die body 3 projects a convex platform 12, and the upper plane of the convex platform 12 on the die body 3 and the upper plane of the die sleeve 2 are overlapped to the same plane. The aluminum alloy bar die of the utility model eliminates the bedding deficit which squeezes the inner tissue structure of the bar, remainders left in the inner passage of the die are decreased, the yield is increased to above 65-70%, and the bedding phenomenon of the bar is basically solved.

Description

A kind of aluminium alloy bars timber die

One, technical field

The utility model relates to a kind of aluminium alloy bars timber die, belongs to the rods and bars of aluminium alloy technical field of mold.

Two, background technology

The mould that rods and bars of aluminium alloy production is used is that mould is made up of die sleeve 2, deflector 1, die body 3 and die-cushion 4, and is shown in Figure 1 as the right side according to the method for designing design of routine.It is also passable reluctantly that this mould structure is produced some minor diameter bars for mild alloy as 6063 or 6061, and the bar specification of producing is all bigger at present, but also mostly be superhard alloys such as picture 2xxx, 7xxx.Particularly export to foreign countries, must strict control for the quality aspect.

This mould in use exists very big problem, causes the extruded bars internal organizational structure to present into layer defects easily.The defective material that deflector inner passage 7 accumulates can cause stratification at the front end of second rod next time when pushing, how long the mobile waste product that how far forms of these defective materials just has.This is owing to deflector causes.

The die sleeve front has one section directly to make a slip of the tongue and cross zone 6, and aluminium ingot at first will be by here during extruding, and then enter the mold work band portion.This structure has two effects: (1) can protect the sealing surface of recipient front end; (2) aluminium makes mould be not easy to take out inside entering die sleeve in the time of can preventing to push.Because the recipient diameter is the same with mould big.The transitional region of die sleeve front is equivalent to the effect of deflector, can bring the defective of stratification equally to extruding.

The bar front end of producing will excise waste material 1.0～1.5m, and individual other can switch to more than the 2.0m, and tail end excision waste material is generally also about 1.5～2.0m; The yield rate of producing is generally about 60%.The waste product of producing has almost reached half, has increased sizable production cost.

Three, summary of the invention

The purpose of this utility model provides the aluminium alloy bars timber die that a kind of stratification that can control the bar afterbody, yield rate improve.

The utility model is achieved through the following technical solutions.

A kind of aluminium alloy bars timber die, its special character is to comprise die sleeve 2, die body 3, die-cushion 4, back die-cushion 5, die sleeve 2 is socket die body 3, die-cushion 4, back die-cushion 5 in regular turn, the internal channel 8 of die body 3, die-cushion 4, back die-cushion 5, passage 9, path 10 interior through strengthening in regular turn, the diameter of the passage 11 that the interior warp of die body 3 internal channels 8 passes through greater than rodss and bars of aluminium alloy in the die body 3, boss 12 of die body 3 upper ledge, the last planes overlapping of plane and die sleeve 2 is same plane on the boss 12 of die body 3;

The height of the boss 12 of described die body 3 is the 10-30% of die body 3 height.

A kind of aluminium alloy bars timber die of the present utility model, deflector 1 is removed, the transitional region 6 of die sleeve 2 is removed, die-cushion 5 after increasing by one, eliminated the one-tenth layer defects of extruded bars internal organizational structure, the defective material that the mould inside passage accumulates reduces, and the bar front end mute amount of production is 0.5～0.8m, and tail end excision amount is generally about 0.7～1.2m; The yield rate of producing is brought up to more than 65～70%, and the stratification of bar solves basically.

Four, description of drawings

Fig. 1: improve the front mold structure;

Fig. 2: improve the back mould structure.

Among the figure, 1, deflector, 2, die sleeve, 3, die body, 4, die-cushion, 5, the back die-cushion, 6, transitional region, 7, the deflector inner passage, 8, passage, 9, passage, 10, passage, 11, passage, 12, boss.

Five, the specific embodiment

Specify the technical solution of the utility model below by several embodiment, but the utility model is not limited to following examples.

With reference to figure 1,2, a kind of aluminium alloy bars timber die, deflector is removed, die body directly contacts with aluminium bar and pushes, production and process aspect have carried out corresponding change to the technology of carrying out, and reach the stratification of control bar afterbody by the series of parameters such as temperature of control extrusion speed and aluminium bar; The transitional region of die sleeve is removed, allowed mould directly expose the outside and push, by such rectification, the stratification of bar has solved basically.

A kind of aluminium alloy bars timber die, deflector 1 is removed, the transitional region 6 of die sleeve 2 is removed, die-cushion 5 after increasing by one, comprise die sleeve 2, die body 3, die-cushion 4, back die-cushion 5, die sleeve 2 is socket die body 3 in regular turn, die-cushion 4, back die-cushion 5, die body 3, die-cushion 4, the internal channel 8 of back die-cushion 5, passage 9, the interior of path 10 strengthens through in regular turn, the diameter of the passage 11 that the interior warp of die body 3 internal channels 8 passes through greater than rodss and bars of aluminium alloy in the die body 3, boss 12 of die body 3 upper ledge, the last planes overlapping of plane and die sleeve 2 is same plane on the boss 12 of die body 3, and the height of the boss 12 of die body 3 is the 10-30% of die body 3 height.

A kind of aluminium alloy bars timber die of present embodiment, deflector 1 is removed, the transitional region 6 of die sleeve 2 is removed, die-cushion 5 after increasing by one, eliminated the one-tenth layer defects of extruded bars internal organizational structure, the defective material that the mould inside passage accumulates reduces, and the bar front end mute amount of production is 0.5～0.8m, and tail end excision amount is generally about 0.7～1.2m; The yield rate of producing is brought up to more than 65～70%, and the stratification of bar solves basically.

Claims

1. aluminium alloy bars timber die, it is characterized in that comprising die sleeve (2), die body (3), die-cushion (4), back die-cushion (5), die sleeve (2) is socket die body (3) in regular turn, die-cushion (4), back die-cushion (5), die body (3), die-cushion (4), the internal channel (8) of back die-cushion (5), passage (9), the internal diameter of passage (10) strengthens in regular turn, the diameter of the passage (11) that the internal diameter of the internal channel (8) of die body (3) passes through greater than the interior rods and bars of aluminium alloy of die body (3), die body (a 3) boss of upper ledge (12), the last planes overlapping that the boss (12) of die body (3) is gone up plane and die sleeve (2) is same plane.

2. by the described a kind of aluminium alloy bars timber die of claim 1, the height that it is characterized in that the boss (12) of described die body (3) is the 10-30% of die body (3) height.