CN1438080A - Method for producing aluminium by colol extrusion - Google Patents
Method for producing aluminium by colol extrusion Download PDFInfo
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- CN1438080A CN1438080A CN 02105006 CN02105006A CN1438080A CN 1438080 A CN1438080 A CN 1438080A CN 02105006 CN02105006 CN 02105006 CN 02105006 A CN02105006 A CN 02105006A CN 1438080 A CN1438080 A CN 1438080A
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- tubing
- aluminium
- aluminum pipe
- colol
- extrusion
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Abstract
The method for producing cold-extruded aluminum tube includes: 1. preparing at least a tube material of aluminium; 2. reducing calibre of one end of the tube material and changing it to small; 3. coating said tube material with lubricating agent; 4. cold-extruding treatment; preparing at least one eye mould and at least noe core shaft, inserting the core shaft into said tube material, pushing one end of said tube material which is undergone the process of head-reducing treatment of drive said tube material and make it pass through the mould eye of said eye mould to make said tube material be formed into the required aluminum tube. It can raise working quality and working speed, and can reduce consumption of aluminium material, and can reduce cost.
Description
[technical field]
The present invention relates to a kind of manufacture method of aluminium by colol extrusion.
[background technology]
General aluminium alloy can be divided into two big classes such as heat treatment type aluminium alloy and non-heat treatment type aluminium alloy, these two kinds of aluminium alloys all may be molded to aluminum pipe via manufacture methods such as crowded type (generally need be heated to 550 ℃), butt joint welding, but, when the aluminum pipe of these two kinds of different materials is desired to carry out but can meet with following difficulty when artificial-strengthening is handled:
One, because non-heat treatment type aluminium alloy generally can only carry out intensive treatment by cold rolling, cold forging, but, this kind intensive treatment only is applicable to sheet material or solid finished product, and be not suitable for the aluminum pipe of hollow, therefore, present aluminum pipe for non-heat treatment type aluminium alloy there is no effective ways and imposes the artificial-strengthening processing.
Though two, can be strengthened by relevant heat treatment process (for example solution treatment, age-hardening are handled or the like) for the aluminum pipe of heat treatment type aluminium alloy, but, the aluminum pipe intensity that heat treatment process can improve is limited, and can produce aluminum pipe distortion and size problem of unstable.
In addition, above-mentioned aluminum pipe is size, the required precision that reaches relevant, more need carry out follow-up machining processes, for example car system, grinding or the like, though, so can make these aluminum pipes reach relevant dimensional requirement, but these machining processes but can cause following disappearance:
One, machining accuracy is low, process velocity is slow, the processing stability is low: because these machinings are to utilize cutter, grinding tool to process, therefore, because of causing machining accuracy, mismachining tolerance reduces easily, and car system, grind be suitable consumption worker originally, processing consuming time is handled, therefore, growth along with aluminum pipe length, more can cause seriously slowing down of process velocity, in addition, in the process of car system, grinding, because the abrasion of cutter, grinding tool then can cause the processing quality instability, cause processing stability and reduce.
Two, feed consumption height: car system, grind all loss aluminum pipe material in a large number, like this, not only can cause waste of material, more can increase the materials cost.
Three, stock-sales ratio height: limited because of the change in size that car system, grinding can be processed, and, if the amplitude of car system, grinding is excessive, more can cause the materials cost significantly to improve, therefore, the aluminum pipe of the essential multiple different size of stock of dealer is so that the machining of being correlated with causes dealer's stock-sales ratio, inventory cost to increase.
Four, design variation is low: by general car system technology as can be known, when the length of aluminum pipe is above greater than five times of diameter lengths of aluminum pipe, the difficulty of car system on will generating technique in the pipe of aluminum pipe, and, when the length of aluminum pipe is above greater than the octuple diameter length of aluminum pipe, the difficulty of the outer car system of the pipe of aluminum pipe on also can generating technique, therefore, car system aluminum pipe has the dimensions restriction as known from the above, can't at random aluminum pipe total length car be made as required wall thickness and cross sectional shape.
Five, surperficial luminosity is low: aluminum pipe is after general car system, grinding, and its outer surface can be covered with tool marks, therefore, causes the surperficial luminosity of aluminum pipe not good, and if carry out precise finiss, though can improve luminosity, can cause production cost to increase.
[summary of the invention]
The object of the present invention is to provide a kind of aluminum pipe intensity that improves, and can improve processing quality, process velocity, and can reduce the manufacture method of the aluminium by colol extrusion of manufacturing cost.
In order to achieve the above object, the invention provides a kind of manufacture method of aluminium by colol extrusion, it is characterized in that: the method includes the steps of:
One, prepare at least one tubing: this tubing is the tubing of aluminum alloy materials;
Two, drop-head is handled: make this tubing wherein the caliber of an end bring together and diminish;
Three, epithelium is handled: with lubricant applying on this tubing;
Four, cold-extruded is handled: prepare a glance mould and at least one mandrel at least, this mandrel is stretched in this tubing, promote the end that this tubing is handled through drop-head, to drive the mould eye of this tubing by this mould, so, can make this tube forming is required aluminum pipe.
The manufacture method of described aluminium by colol extrusion is characterized in that: the material of this tubing of step 1 is a heat treatment type aluminium alloy, and this tubing has passed through solution treatment and timeliness cure process.
The manufacture method of described aluminium by colol extrusion is characterized in that: the employed lubricant of step 3 can be liquid lubricant or solid lubricant.
The manufacture method of described aluminium by colol extrusion, it is characterized in that: when step 4, can utilize the collocation of this different moulds, this mandrel to use, can make the continuously mould eye by this different moulds of this tubing, and then this aluminum pipe that this tubing be may be molded to have different pipe thicknesses and different cross section shape simultaneously.
Via above explanation, advantage of the present invention can be summarized as follows:
One, in the cold-extruded processing procedure of step 4, the stressed extruding of the crystal grain of this aluminium 10, and become folk prescription to fibr tissue, so after this aluminium 10 was shaped to this aluminum pipe 40, the intensity of this aluminum pipe 40 can significantly improve, and be better than existing aluminum pipe.
Two, in the cold-extruded processing procedure of step 4, the intensity of this aluminum pipe 40 of the present invention can significantly improve, so under identical safety standard, this aluminum pipe 40 can reach the purpose of light-weight design, uses to save material, and reduces material cost.
Three, in the cold-extruded processing procedure of step 4, the present invention is the cooperation that utilizes this mould 20, this mandrel 30, and make these aluminium 10 one-shot formings be this aluminum pipe 40, and, utilize the collocation of this mould 20, this mandrel 30 to use, the problem of also existing cutter, the more difficult generation mismachining tolerance of grinding tool, abrasion is so process velocity of the present invention is fast, machining accuracy is high, processing stability height.
Four, the processing of the cold-extruded of step 4 of the present invention is to belong to the chipless cold-working, so the present invention can not cause waste of material, and can significantly reduce the materials cost.
Five, the present invention utilizes being used of this different moulds, this mandrel, can be the aluminum pipe of various different-thickness with these aluminium 10 cold-extrudeds, therefore, producer only needs a spot of this aluminium 10 of stock, the moulding that can be correlated with is made, so the present invention can reduce dealer's stock-sales ratio, and then can reduce dealer's inventory cost.
Six, as shown in Figure 5, in the cold-extruded processing procedure of step 4, the present invention uses by this mould of number different size, shape, the collocation of this mandrel, can carry out the pipe thickness processing and the cross sectional shape processing of this tubing 10 synchronously, therefore, the present invention can not produce as the existing technical difficulty of car system (particularly processing and forming in the pipe), so, the size restrictions that aluminum pipe is made in moulding of the present invention is little, and can at random the aluminum pipe total length be shaped to required wall thickness and cross sectional shape.
Seven, in the cold-extruded processing procedure of step 4, these aluminium 10 inside and outside footpaths are taken out by synchronous essence, and generate the light face, therefore, just this aluminum pipe 40 of one-step forming promptly has the existing preliminary aluminum pipe of making surface of good luminosity more, so the surperficial luminosity of manufactured goods of the present invention is better.
In addition, what deserves to be mentioned is, though, with non-heat treatment type aluminium alloy is the tubing of material, because the restriction of himself material behavior, after correlation step of the present invention was handled, its intensity that can improve still was limited, but the present invention is still applicable to being the tubing of material with non-heat treatment type aluminium alloy.
The present invention is described in detail below in conjunction with drawings and Examples:
[description of drawings]
Fig. 1 is the manufacturing flow chart of the present invention one than Cui embodiment.
Fig. 2 is that this cold-extruded than Cui embodiment is handled schematic diagram ().
Fig. 3 is that this cold-extruded than Cui embodiment is handled schematic diagram (two).
Fig. 4 is that this cold-extruded than Cui embodiment is handled schematic diagram (three).
Fig. 5 is this partial cross-sectional perspective view than the manufactured goods of Cui embodiment.
[specific embodiment]
Consult Fig. 1,2,3,4, of the present invention one than Cui embodiment, is to comprise following steps:
One, prepare a tubing 10: this tubing 10 is to be material with heat treatment type aluminium alloy, and by crowded type moulding (being heated to 550 ℃), and, after these tubing 10 moulding by solution treatment and timeliness cure process.
Two, drop-head is handled: make this tubing 10 wherein the caliber of an end bring together and diminish.This is the common ordinary skill in this area, so do not give unnecessary details.
Three, epithelium is handled: lubricant applying on this tubing 10, is to use liquid lubricant in the present embodiment.
Four, cold-extruded is handled: prepare an a glance mould 20 and a mandrel 30, at normal temperatures, this mandrel 30 is stretched in this tubing 10, promote the end that this tubing 10 is handled through drop-head, to drive the mould eye 21 of this tubing 10 by this mould 20, so, can make this tubing 10 be shaped to a required aluminum pipe 40 after the demoulding.
Whereby; when step 1; this tubing 10 has had and the identical intensity of above-mentioned existing heat treatment type aluminium alloy aluminum pipe; and in step 4; this aluminium 10 is subjected to this mould 20 at normal temperatures; when the cooperation of this mandrel 30 is pushed; the crystal grain of this aluminium 10 can be out of shape along machine direction; become elongated crystal grain; and the direction of crystal grain can forward the direction of processing substantially to; the tissue that is to say this aluminium 10 can become and is directive tissue; and along with these aluminium 10 plastic deformations to a certain degree the time; the crystal grain of this aluminium 10 is because the slip effect; its crystal lattice can be cut apart; and each will become elongated crystallization after partly turning to; and the whole tissue that makes this aluminium 10 is for fibrous; promptly; organizing of this aluminium 10 becomes folk prescription the most at last to fibr tissue; this is the perfect structure that is only second to monocrystal; therefore; the intensity of this aluminum pipe 40 (rerum natura) will significantly improve after the moulding; (according to inventor's actual test; the intensity of this aluminum pipe 40 can have aluminum pipe now and improve 40% to 50%); and; along with the compression ratio between this aluminum pipe 40 and this aluminium 10 increases (tube wall of big more this aluminum pipe 40 of expression of compression ratio is thin more); the intensity of this aluminum pipe 40 also can proportionally increase, therefore, and under identical safety standard; this aluminum pipe 40 can reach the intensity identical with existing aluminum pipe with thin pipe thickness; so, not only can reach the purpose of light-weight design, more can save material and use; reduce the materials cost.
In addition, consult Fig. 5, the present invention is by the number different size, this of shape mould, the collocation of this mandrel (figure does not show) is used, can make this tubing 10 pass through the mould eye of this different moulds continuously, an and then aluminum pipe 50 that this tubing 10 be may be molded to have different pipe thicknesses and different cross section shape simultaneously, as shown in Figure 5, this aluminum pipe 50 has one first pipe portion 51 and one second pipe portion 52, the pipe thickness of this first pipe portion 51 is the pipe thicknesses greater than this second pipe portion 52, and, the inner section shape of this first pipe portion 51 is to be polygonal, and the inner section shape of this second pipe portion 52 is to be circular arc.
Conclude above-mentionedly, the manufacture method of aluminium by colol extrusion of the present invention not only can be improved, improve aluminum pipe intensity, and can improve processing quality, process velocity, and can effectively reduce aluminium consume, reduce manufacturing cost, so can reach the purpose of invention really.
Claims (5)
1. the manufacture method of an aluminium by colol extrusion is characterized in that: comprise following steps:
(1), prepare at least one tubing: this tubing is the tubing of aluminum alloy materials;
(2), drop-head is handled: make this tubing wherein the caliber of an end bring together and diminish;
(3), epithelium is handled: with lubricant applying on this tubing;
(4), cold-extruded is handled: prepare a glance mould and at least one mandrel at least, this mandrel is stretched in this tubing, promote the end that this tubing is handled through drop-head, to drive the mould eye of this tubing by this mould, can make this tube forming is required aluminum pipe.
2. the manufacture method of aluminium by colol extrusion as claimed in claim 1, it is characterized in that: the material of this tubing of step () is a heat treatment type aluminium alloy, and this tubing has passed through solution treatment and timeliness cure process.
3. the manufacture method of aluminium by colol extrusion as claimed in claim 1, it is characterized in that: the employed lubricant of step (three) is a liquid lubricant.
4. the manufacture method of aluminium by colol extrusion as claimed in claim 1, it is characterized in that: the employed lubricant of step (three) is a solid lubricant.
5. the manufacture method of aluminium by colol extrusion as claimed in claim 1, it is characterized in that: when step 4, utilize the collocation of this different moulds, this mandrel to use, can make the continuously mould eye by this different moulds of this tubing, and then this aluminum pipe that this tubing be may be molded to have different pipe thicknesses and different cross section shape simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02105006 CN1438080A (en) | 2002-02-10 | 2002-02-10 | Method for producing aluminium by colol extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02105006 CN1438080A (en) | 2002-02-10 | 2002-02-10 | Method for producing aluminium by colol extrusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1438080A true CN1438080A (en) | 2003-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02105006 Pending CN1438080A (en) | 2002-02-10 | 2002-02-10 | Method for producing aluminium by colol extrusion |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423892C (en) * | 2004-04-19 | 2008-10-08 | 常州市蓝托金属制品有限公司 | Method for producing products of tubular meta casing body |
| CN102327996A (en) * | 2010-12-10 | 2012-01-25 | 王俊强 | Grinding-type pipe end forming machine |
| CN102756246A (en) * | 2012-07-30 | 2012-10-31 | 十堰园钧工贸有限公司 | Composite precision forming method for fender bracket of automobile |
| CN103056633A (en) * | 2013-01-16 | 2013-04-24 | 宝鸡市佳信达金属材料有限公司 | Tubular transition joint and tubular aluminum-stainless steel transition joint implementation method |
| CN108655285A (en) * | 2018-06-04 | 2018-10-16 | 升励五金（深圳）有限公司 | A kind of mold and draw technique applied to aluminum pipe draw technique |
| CN111167993A (en) * | 2019-04-09 | 2020-05-19 | 金允成企业股份有限公司 | Forging and drawing forming method for aluminum alloy pipe fitting |
-
2002
- 2002-02-10 CN CN 02105006 patent/CN1438080A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423892C (en) * | 2004-04-19 | 2008-10-08 | 常州市蓝托金属制品有限公司 | Method for producing products of tubular meta casing body |
| CN102327996A (en) * | 2010-12-10 | 2012-01-25 | 王俊强 | Grinding-type pipe end forming machine |
| CN102756246A (en) * | 2012-07-30 | 2012-10-31 | 十堰园钧工贸有限公司 | Composite precision forming method for fender bracket of automobile |
| CN102756246B (en) * | 2012-07-30 | 2014-10-08 | 十堰园钧工贸有限公司 | Composite precision forming method for fender bracket of automobile |
| CN103056633A (en) * | 2013-01-16 | 2013-04-24 | 宝鸡市佳信达金属材料有限公司 | Tubular transition joint and tubular aluminum-stainless steel transition joint implementation method |
| CN108655285A (en) * | 2018-06-04 | 2018-10-16 | 升励五金（深圳）有限公司 | A kind of mold and draw technique applied to aluminum pipe draw technique |
| CN111167993A (en) * | 2019-04-09 | 2020-05-19 | 金允成企业股份有限公司 | Forging and drawing forming method for aluminum alloy pipe fitting |
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