CN104018037A - An anti-cracking aluminium alloy seam circular pipe and a preparing method thereof - Google Patents
An anti-cracking aluminium alloy seam circular pipe and a preparing method thereof Download PDFInfo
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- CN104018037A CN104018037A CN201410240321.9A CN201410240321A CN104018037A CN 104018037 A CN104018037 A CN 104018037A CN 201410240321 A CN201410240321 A CN 201410240321A CN 104018037 A CN104018037 A CN 104018037A
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Abstract
The invention discloses an anti-cracking aluminium alloy seam circular pipe and a preparing method thereof. The pipe comprises following components by weight: 0.58% plus or minus 0.03% of silicon, less than 0.17% of iron, 0.23% plus or minus 0.03% of copper, less than 0.1% of manganese, 0.86% plus or minus 0.03% of magnesium, 0.07% plus or minus 0.03% of chromium, less than 0.03% of zinc, less than 0.03% of titanium, and less than 0.15% of boron, with the balance being aluminium. The invention also discloses a production process using the preparing method. An aluminum material is fed into a welding room in a manner of rotation, thus increasing the length of the welding line, and enhancing the welding strength. In addition, the ratio of the pure aluminum to waste materials is strictly controlled, smelting is performed by high-quality processors according to requirements, and a mature extrusion process of a company is adopted in cooperation to control the generation of large grains in extrusion processes and improving malleability of products.
Description
Technical field
The present invention relates to a kind of pipe, particularly seamed pipe of a kind of explosion-proof aluminium alloy and preparation method thereof.
Background technology
The production process of seamed pipe is: after aluminium material is heated, after high pressure minute multiply (more than two strands) enters mould seam chamber, fuse together, being divided into several strands of pan feedings just has several seam lines.The existence of seam line causes product to be prone to cracking doing cold working process, thus the product of ductility being had relatively high expectations for some, as the seamed pipe of product of expander processing large percentage cannot be competent at and must use the seamless pipe that cost is higher instead.
Summary of the invention
Goal of the invention: the object of the invention is to the problem for prior art, seamed pipe of a kind of explosion-proof aluminium alloy and preparation method thereof is provided.
Technical scheme: the invention provides following technical scheme: the seamed pipe of a kind of explosion-proof aluminium alloy, its component and quality percentage composition are: silicon 0.58% ± 0.03%, iron are less than 0.17%, copper 0.23% ± 0.03%, manganese are less than 0.1%, magnesium 0.86% ± 0.03%, chromium 0.07% ± 0.03%, zinc are less than 0.03%, titanium is less than 0.03%, boron is less than 0.15%, all the other are aluminium.
A preparation method for the seamed pipe of explosion-proof aluminium alloy, comprises the following steps:
1) according to the melting of setting, require to provide high-quality aluminium alloy cast rod by supplier, fusion process drops into waste material end to end and is no more than 30%, fine aluminium approximately 70% ± 5%, and fusion process adds aluminum silicon alloy copper, manganese, chromium, magnesium, aluminium titanium boron wire; Through refining, do odds and ends, slagging-off, standing after in 730 ± 5 ℃ of aluminium ingots that are cast as various size, strictly control grain fineness number and must not be greater than 1 grade;
2) set 450 ~ 510 ℃ of mould pressurizing temperature, place blank and process on die main body external diameter, finished size is considered quenching strain and is placed blank, extrusion speed 2.0-6.0mm/s;
3) according to die design drawing requirement, milling processes plup inlet, and the bridge location milling under male is sunk to 10 ~ 20mm, the following nearly bridge location part of while plup inlet sideling milling is gone down, the mould adopting comprises die main body, bridge location, seam chamber and bridge location picture, plup inlet is arranged at die main body top, bridge location is arranged at die main body upper surface near central position, and bridge location picture runs through die main body and is arranged at bridge location central authorities, and seam chamber is arranged at die main body inside;
4) tempering after first quenching, makes hardness in HRC49 ± 1 °;
5) be finish-machined to fitted position;
6) die main body work band and bridge location are partly polished, guarantee smooth;
7) according to actual product die trial, test.
As optimization, in described step 1) fine aluminium, the quality percentage composition of iron is less than 0.13%.。
As optimization, casting aluminium bar is controlled grain fineness number and is not more than 1 grade.
As optimization, extruding condition is: 480 ± 10 ℃ of die temperatures, 480 ± 10 ℃ of aluminum ingot temperatures, 530 ± 10 ℃ of temperature outs.
Principle of work: require to provide high-quality aluminium alloy cast rod by supplier according to the melting of setting, fusion process drops into waste material end to end and is no more than 30%, fine aluminium approximately 70% ± 5%, fusion process adds aluminum silicon alloy copper, manganese, chromium, magnesium, aluminium titanium boron wire; Through refining, do odds and ends, slagging-off, standing after in 730 ± 5 ℃ of aluminium ingots that are cast as various size, strictly control grain fineness number and must not be greater than 1 grade; Set 450 ~ 510 ℃ of mould pressurizing temperature, place blank and process on die main body external diameter, finished size is considered quenching strain and is placed blank, extrusion speed 2.0-6.0mm/s; According to die design drawing requirement, milling processes plup inlet; Tempering after first quenching, makes hardness in HRC49 ± 1 °; Be finish-machined to fitted position; Die main body work band and bridge location are partly polished, guarantee smooth; According to actual product die trial, test.
Beneficial effect: the present invention compared with prior art: the aluminium-alloy pipe that adopts raw material of the present invention to prepare has high ductibility, explosion-proof, strict fine aluminium and the waste material ratio controlled, raw material waste material is than 7:3, and waste material used is the material end to end of company's extrusion process, does not have all kinds of material that are mingled with of spray material and market purchase, by high-quality, add industrial and commercial adhere rigidly to requirement melting, be equipped with the extrusion process of company's maturation, control the generation of extrusion process coarse grain, the ductility of improving product.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of prior art;
Fig. 2 is the cross section structure schematic diagram of prior art;
Fig. 3 is for adopting the seam line of prior art;
Fig. 4 is plan structure schematic diagram of the present invention;
Fig. 5 is cross section structure schematic diagram of the present invention;
Fig. 6 is for adopting seam line of the present invention.
Embodiment
If accompanying drawing 1 is to the attached contrast schematic diagram that Figure 6 shows that prior art mould and adopt mould of the present invention, the seamed pipe of explosion-proof aluminium alloy of producing, its component and quality percentage composition are: silicon 0.58%, iron 0.16%, copper 0.23%, manganese 0.09%, magnesium 0.86%, chromium 0.07%, zinc 0.02%, titanium 0.02%, boron 0.14%, aluminium 70.21%.The mould adopting comprises die main body, bridge location, seam chamber and bridge location picture, plup inlet is arranged at die main body top, bridge location is arranged at die main body upper surface near central position, and bridge location picture runs through die main body and is arranged at bridge location central authorities, and seam chamber is arranged at die main body inside.
Embodiment 1
Adopt bridge location to extend die main body bottom 10mm daytime.
A kind of production technique that adopts spiral seam aluminium alloy to use mould, comprise the following steps: according to the melting of setting, require to provide high-quality aluminium alloy cast rod by supplier, fusion process drops into waste material 25.3% end to end, fine aluminium is 70.5%, wherein iron level 0.12%, and fusion process adds aluminum silicon alloy copper, manganese, chromium, magnesium, aluminium titanium boron wire; Through refining, do odds and ends, slagging-off, standing after in 725 ℃ of aluminium ingots that are cast as various size, strictly control grain fineness number and must not be greater than 1 grade, control 470 ℃ of aluminum ingot temperatures; Set 470 ℃ of mould pressurizing temperature, place blank and process on die main body external diameter, finished size is considered quenching strain and is placed blank, extrusion speed 2.0mm/s; According to die design drawing requirement, milling processes plup inlet, and the bridge location milling under male is sunk to 15mm, and the following nearly bridge location part of while plup inlet sideling milling is gone down, and the aluminium material of near-lying mode bridge part is rotating to enter to store and closing chamber; Tempering after first quenching, makes hardness in HRC49 ± 1, ° be finish-machined to fitted position, 520 ℃ of temperature outs; Die main body work band and bridge location are partly polished, guarantee smooth; According to actual product die trial, test.
The product yield 94% of producing, mould damages afterwards in continuing 10 tons of extruding.
Embodiment 2
Adopt bridge location to extend die main body bottom 15mm daytime.
A kind of production technique that adopts spiral seam aluminium alloy to use mould, comprise the following steps: according to the melting of setting, require to provide high-quality aluminium alloy cast rod by supplier, fusion process drops into waste material 20.1% end to end, fine aluminium is 74.4%, wherein iron level 0.10%, and fusion process adds aluminum silicon alloy copper, manganese, chromium, magnesium, aluminium titanium boron wire; Through refining, do odds and ends, slagging-off, standing after in 730 ℃ of aluminium ingots that are cast as various size, strictly control grain fineness number and must not be greater than 1 grade, control 480 ℃ of aluminum ingot temperatures; Set 480 ℃ of mould pressurizing temperature, place blank and process on die main body external diameter, finished size is considered quenching strain and is placed blank, extrusion speed 4mm/s; According to die design drawing requirement, milling processes plup inlet, and the bridge location milling under male is sunk to 10mm, and the following nearly bridge location part of while plup inlet sideling milling is gone down, and the aluminium material of near-lying mode bridge part is rotating to enter to store and closing chamber; Tempering after first quenching, makes hardness in HRC49 ± 1, ° be finish-machined to fitted position, 530 ℃ of temperature outs; Die main body work band and bridge location are partly polished, guarantee smooth; According to actual product die trial, test.
The product yield 97% of producing, mould damages afterwards in continuing 12 tons of extruding.
Embodiment 3
Adopt bridge location to extend die main body bottom 20mm daytime.
The production technique of mould for a kind of spiral seam aluminium alloy, comprise the following steps: according to the melting of setting, require to provide high-quality aluminium alloy cast rod by supplier, fusion process drops into waste material 31.7% end to end, fine aluminium is 65.2%, wherein iron level 0.11%, and fusion process adds aluminum silicon alloy copper, manganese, chromium, magnesium, aluminium titanium boron wire; Through refining, do odds and ends, slagging-off, standing after in 735 ℃ of aluminium ingots that are cast as various size, strictly control grain fineness number and must not be greater than 1 grade, control 490 ℃ of aluminum ingot temperatures; Set 490 ℃ of mould pressurizing temperature, place blank and process on die main body external diameter, finished size is considered quenching strain and is placed blank, extrusion speed 6mm/s; According to die design drawing requirement, milling processes plup inlet, and the bridge location milling under male is sunk to 20mm, and the following nearly bridge location part of while plup inlet sideling milling is gone down, and the aluminium material of near-lying mode bridge part is rotating to enter to store and closing chamber; Tempering after first quenching, makes hardness in HRC49 ± 1, ° be finish-machined to fitted position, 540 ℃ of temperature outs; Die main body work band and bridge location are partly polished, guarantee smooth; According to actual product die trial, test.
The product yield 89% of producing, mould damages afterwards in continuing 5 tons of extruding.
Claims (5)
1. the seamed pipe of explosion-proof aluminium alloy, is characterized in that: its component and quality percentage composition are: silicon 0.58% ± 0.03%, iron are less than 0.17%, copper 0.23% ± 0.03%, manganese are less than 0.1%, magnesium 0.86% ± 0.03%, chromium 0.07% ± 0.03%, zinc are less than 0.03%, titanium is less than 0.03%, boron is less than 0.15%, all the other are aluminium.
2. a preparation method for product as claimed in claim 1, is characterized in that: comprise the following steps:
1) according to the melting of setting, require to provide high-quality aluminium alloy cast rod by supplier, fusion process drops into waste material end to end and is no more than 30%, fine aluminium 70% ± 5%, and fusion process adds aluminum silicon alloy copper, manganese, chromium, magnesium, aluminium titanium boron wire; Through refining, do odds and ends, slagging-off, standing after in 730 ± 5 ℃ of aluminium ingots that are cast as various size, strictly control grain fineness number and must not be greater than 1 grade;
2) set 450 ~ 510 ℃ of mould pressurizing temperature, place blank and process on die main body external diameter, finished size is considered quenching strain and is placed blank, extrusion speed 2.0-6.0mm/s;
3) according to die design drawing requirement, milling processes plup inlet, and the bridge location milling under male is sunk to 10 ~ 20mm, the following nearly bridge location part of while plup inlet sideling milling is gone down, the mould adopting comprises die main body, bridge location, seam chamber and bridge location picture, plup inlet is arranged at die main body top, bridge location is arranged at die main body upper surface near central position, and bridge location picture runs through die main body and is arranged at bridge location central authorities, and seam chamber is arranged at die main body inside;
4) tempering after first quenching, makes hardness in HRC49 ± 1 °;
5) be finish-machined to fitted position;
6) die main body work band and bridge location are partly polished, guarantee smooth;
7) according to actual product die trial, test.
3. the preparation method of product as claimed in claim 1 according to claim 2, is characterized in that: in described step 1) fine aluminium, the quality percentage composition of iron is less than 0.13%.
4. the preparation method of product as claimed in claim 1 according to claim 2, is characterized in that: casting aluminium bar is controlled grain fineness number and is not more than 1 grade.
5. the preparation method of product as claimed in claim 1 according to claim 2, is characterized in that: extruding condition is: 480 ± 10 ℃ of die temperatures, 480 ± 10 ℃ of aluminum ingot temperatures, 530 ± 10 ℃ of temperature outs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410240321.9A CN104018037A (en) | 2014-06-26 | 2014-06-26 | An anti-cracking aluminium alloy seam circular pipe and a preparing method thereof |
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| CN201410240321.9A CN104018037A (en) | 2014-06-26 | 2014-06-26 | An anti-cracking aluminium alloy seam circular pipe and a preparing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925850A (en) * | 2015-12-31 | 2016-09-07 | 洛阳神佳窑业有限公司 | Explosion-proof material |
| CN108588518A (en) * | 2018-02-07 | 2018-09-28 | 兰州理工大学 | A kind of high hardness aluminium alloy material preparation method |
| CN108929977A (en) * | 2018-06-20 | 2018-12-04 | 常熟市长发铝业有限公司 | A kind of production method of 6063 aluminium alloy extrusions |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037743A (en) * | 2007-05-09 | 2007-09-19 | 东北轻合金有限责任公司 | High-accuracy aluminum alloy wave canal and manufacturing method thereof |
| CN102796926A (en) * | 2012-08-30 | 2012-11-28 | 明达铝业科技(太仓)有限公司 | High-strength aluminum alloy round pipe and manufacturing method thereof |
-
2014
- 2014-06-26 CN CN201410240321.9A patent/CN104018037A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037743A (en) * | 2007-05-09 | 2007-09-19 | 东北轻合金有限责任公司 | High-accuracy aluminum alloy wave canal and manufacturing method thereof |
| CN102796926A (en) * | 2012-08-30 | 2012-11-28 | 明达铝业科技(太仓)有限公司 | High-strength aluminum alloy round pipe and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925850A (en) * | 2015-12-31 | 2016-09-07 | 洛阳神佳窑业有限公司 | Explosion-proof material |
| CN108588518A (en) * | 2018-02-07 | 2018-09-28 | 兰州理工大学 | A kind of high hardness aluminium alloy material preparation method |
| CN108929977A (en) * | 2018-06-20 | 2018-12-04 | 常熟市长发铝业有限公司 | A kind of production method of 6063 aluminium alloy extrusions |
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Application publication date: 20140903 |