CN104099497A - Production method of high-strength marine aluminum alloy cylinder profiles - Google Patents
Production method of high-strength marine aluminum alloy cylinder profiles Download PDFInfo
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- CN104099497A CN104099497A CN201410394117.2A CN201410394117A CN104099497A CN 104099497 A CN104099497 A CN 104099497A CN 201410394117 A CN201410394117 A CN 201410394117A CN 104099497 A CN104099497 A CN 104099497A
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Abstract
The invention relates to a production method of high-strength marine aluminum alloy cylinder profiles. The production method comprises aluminum alloy ingot casting; high-strength aluminum alloy cylinder profile extrusion and online quenching; high-strength aluminum alloy cylinder profile tension extension and aging treatment; high-strength aluminum alloy cylinder profile sampling and inspection; high-strength aluminum alloy cylinder profile test and packaging. According to the production method of the high-strength marine aluminum alloy cylinder profiles, the high-strength aluminum alloy cylinder profiles are produced through the online quenching and accordingly various performance indicators of the products meet the European standard requirements, the labor productivity is improved, the cost is saved, the order requirements of users are met, the localization production of the high-strength marine aluminum alloy cylinder profiles is achieved, and the import is replaced.
Description
Technical field
The present invention relates to the production method of aluminium alloy extrusions, more specifically a kind of production method of high-strength marine aluminium alloy cylinder section bar.
Background technology
Fast development along with worldwide machinery manufacturing industry technology, new technology, novel material, novel process, product innovation emerges in an endless stream, demand to the high-strength marine aluminium alloy cylinder of certain type section bar is increasing, it is high that high-strength marine aluminium alloy cylinder section bar requires material to possess intensity, plasticity is good, specific tenacity is high, quality is light, high thermal conductivity, solidity to corrosion is good, particularly in briny environment, work for a long time, the stress-free corrosion tendency of breaking, anti intercrystalline corrosion ability is strong, welding property is good, welding zone corrosion resisting property is constant, machinability is good, be easy to the advantages such as processing, and there is good processing performance, be suitable for various forms of machining moulding.In view of the main strengthening element of 6063T6 aluminium alloy few, alloy is simple, so strengthening effect is bad, mechanical property is not high, but 6063 at high temperature, main strengthening element improves with temperature, solid solubility significantly increases, alloy has obvious quench aging strengthening effect, and quenching a wider range, be suitable for press quenching, in alloy, form strengthening phase element capping amount, while adding a small amount of Cu, make the intensity of 6063 alloys approach duralumin, strength increase is larger, but increase for the susceptibility of quenching, when cool time overtime, corrosion resistance declines, therefore, for 6063T6 high strength anti-corrosion aluminium alloy, be badly in need of a kind of manufacture method.The technical program can effectively solve a large amount of production, delivery problems, and substituting import one, realizes production domesticization.
Summary of the invention
The object of the invention is, for the high-strength marine aluminium alloy cylinder of certain type of batch production section bar is provided, can effectively solve a large amount of production, delivery problems, and substituting import one, realize production domesticization.
The high-strength marine aluminium alloy cylinder of certain type section bar production technology scheme, described manufacture method is to realize according to the following steps: one, the aluminium alloy of casting is six line aluminium alloy circle ingot castings, in aluminium alloy cast ingot used, the mass percent Si of element is 0.50%～0.55%, Fe is 0.10%～0.20%, Cu is 0.05%～0.09%, Mn is 0.05%～0.09%, Mg is 0. 50%～0.55%, Zn is≤0. 10%, Ti is that≤0. 10%, Cr is≤0. 10%, single impurity≤0.05%, add up to impurity≤0.15%, all the other are Al; Ingot casting specification is Φ 320mm * 4000mm or Φ 380mm * 4000mm, and during No. six aluminium alloy round cast ingot of melting, requirement calculating is prepared burden, liquid is skimmed, degasification, requires to filter during casting.
Two, by specification, be that Φ 320mm * 4000mm or specification are No. six aluminium alloy round cast ingot railway carriages of Φ 380mm * 4000mm, crop, back-end crop, get low power, chemical composition, the qualified woollen of cutting of low power and chemical composition, woollen specification is that Φ 308mm * 1200mm or specification are Φ 368mm * 1450mm; Woollen homogeneous, Heating temperature: 550-560 ± 5 ℃, are incubated more than 9 hours the type of cooling: air-cooled+water-cooled cooling.
Three, No. six aluminium alloy round cast ingot of preparation are heated to 520 ℃-550 ℃, pack rapidly container into, extrusion temperature 500-520 ± 5 ℃, extrusion speed 3 ± 0.5m/min, quenching temperature 500-520 ± 5 ℃, 350 ℃/minute～380 ℃/minute of quenching velocity.
Four, by the high-strength marine aluminium alloy cylinder of certain type section bar tension force stretching, extensibility 1.5～1.7%, then timeliness: aging temp 150-175 ℃, metal heat preservation 8-15 hour, goes out aging oven.
The physics and chemistry testing material of six, timeliness being come out of the stove, the sample position that the standard for acceptance of regulation and drawing are stipulated as agreed, get physics and chemistry sample, meet European standard, European standard is: tensile strength >=245MPa, yield strength >=200MPa, unit elongation >=8%, China's standard is: tensile strength >=215MPa, yield strength >=170MPa, unit elongation >=8%, after whole physics and chemistry test detections are qualified, by the high-strength marine aluminium alloy cylinder section bar packing of high-strength marine aluminium alloy cylinder section bar surface inspection, dimension inspection, passed examination.
In step 1, chemical composition is within the scope of national standard, with reference to 6063,6060 national standard chemical compositions and inlet gas cylinder chemical composition, draft for my company's chemical composition of high strength alumin ium alloy cylinder type section product, and by alloy called after 6063-2 alloy, determine like this content of alloying element, can make the strengthening effect of 6063 alloys strengthen, and improving mechanical property, composition range is narrow, avoids crossing great fluctuation process and causing that interior tissue is inhomogeneous and mechanical property scattered error is excessive due to chemical composition, Fe adds according to principal element in this alloy, make Fe and Mg, Si forms strengthening phase, Mn is main adding elements in this alloy, mainly for neutralizing unnecessary Fe, thereby reduce the detrimentally affect of Fe, and crystal grain thinning, add Cu element, be controlled at reaching the standard grade of standard, a small amount of Cu and main strengthening composition Si, Mg combination, mechanical property is significantly improved, can make mechanical property approach the performance of duralumin, add Ti, the common crystal grain thinning of Cr and Mn, can make homogeneous microstructure, according to the chemical composition of mentioned above principle preparation, ship cylinder section bar qualification rate is stabilized in more than 90%, and include property indices in national standard, supplement the high-strength standard of 6063 alloy mechanical property, in the equal fire preparing degree of step 2, the type of cooling is that strong wind is cooled to 200 ℃ and adds water-cooled cooling, realize cooling fast, guarantee at utmost solid solution of strengthening element, reduce the operation waiting time more than 24 hours, enhance productivity, and high-strength marine aluminium alloy cylinder section bar machine-shaping rear surface gloss after various oxidations or coating are processed is attractive in appearance, without dark line, concealed wire, not only guarantee use properties but also improve aesthetical perception, the extrusion speed of step 3 can guarantee temperature out, the cooling assurance quenching effect of online water spray, assurance mechanical property is qualified, press quenching can reduce distortion, step 4 makes extensibility between 1.5～1.7%, reduce extensibility and change the size inequality causing greatly, guarantee that in lasting supply of material process, size scattered error is little, guarantee coordinating when cylinder section bar assembles with miscellaneous part, press quenching and off-line quench relatively can reduce take the lead, hanging, off-line quench heat up, insulation equal time, every batch is reduced activity time more than 10 hours, by above measure, can realize 6063 high-strength cylinder section bar press quenchings and meet European standard requirement, European standard, tensile strength >=245MPa, yield strength >=200MPa, unit elongation >=8%, China's standard: tensile strength >=215MPa, yield strength >=170MPa, unit elongation >=8%
The invention provides the technical scheme of the high-strength marine aluminium alloy cylinder section bar press quenching of batch production, make production efficiency improve 13.74%, can produce in batches, substituting import one, realizes production domesticization.
Embodiment
The aluminium alloy of casting is six line aluminium alloy circle ingot castings, in aluminium alloy cast ingot used, the mass percent Si of element is that 0.53%, Fe is that 0.17%%, Cu is 0.085%, Mn is 0.085%, Mg is that 0. 53%%, Zn is that 0. 071%, Ti is 0.085%, Cr is 0. 08810%, single impurity≤0.05%, adds up to impurity≤0.15%, and all the other are Al; Ingot casting is that specification is Φ 320mm * 4000mm, require to calculate that batching, liquid are skimmed, degasification during No. six aluminium alloy round cast ingot of melting, requires to filter during casting, and charge calculation be take the center line of step 1 as basis, to guarantee that ingot casting Composition Control is in standard range; After thawing, once skim, once skim after smelting furnace refining, once skim after holding furnace refining; A degasification after a degasification, holding furnace refining after smelting furnace refining, carries out a getter degasification again after holding furnace refining.Two, by specification, be No. six aluminium alloy round cast ingot railway carriages of Φ 320mm * 4000mm, crop, back-end crop, get low power, chemical composition, the qualified woollen of cutting of low power and chemical composition, woollen specification is Φ 308mm * 1200mm; Woollen homogeneous, Heating temperature: 550 ± 5 ℃, be incubated more than 9 hours the type of cooling: air-cooled+water-cooled cooling.Three, No. six aluminium alloy round cast ingot of preparation are heated to 530 ± 5 ℃, pack rapidly container into, extrusion speed 3 ± 0.5m/min, 510 ± 5 ℃ of quenching temperatures, 360 ℃/minute of quenching velocity.Four, by the high-strength marine aluminium alloy cylinder of certain type section bar tension force stretching, extensibility 1.7%, then timeliness: 170 ℃ of aging temps, metal heat preservation 8 hours, goes out aging oven.
The physics and chemistry testing material of six, timeliness being come out of the stove, the sample position that the standard for acceptance of regulation and drawing are stipulated as agreed, get physics and chemistry sample, European standard is: tensile strength >=245MPa, yield strength >=200MPa, unit elongation 8 >=%, after whole physics and chemistry test detections are qualified, by the high-strength marine aluminium alloy cylinder section bar packing of high-strength marine aluminium alloy cylinder section bar surface inspection, dimension inspection, passed examination.
Embodiment 2
The aluminium alloy of casting is six line aluminium alloy circle ingot castings, specification is that specification is Φ 380mm * 4000mm, during No. six aluminium alloy round cast ingot of melting, requirement calculating is prepared burden, liquid is skimmed, degasification, during casting, require to filter, after thawing, once skim, once skim after smelting furnace refining, once skim after holding furnace refining; A degasification after a degasification, holding furnace refining after smelting furnace refining, carries out a getter degasification again after holding furnace refining.。Two, by specification, be No. six aluminium alloy round cast ingot railway carriages of Φ 380mm * 4000mm, crop, back-end crop, get low power, chemical composition, the qualified woollen of cutting of low power and chemical composition, woollen specification is Φ 368mm * 1450mm; Woollen homogeneous, Heating temperature: 560 ℃, be incubated more than 10 hours the type of cooling: air-cooled+water-cooled cooling.Three, No. six aluminium alloy round cast ingot of preparation are heated to 535 ℃, pack rapidly container into, extrusion speed 3 ± 0.5m/min, 515 ℃ of quenching temperatures, 370 ℃/minute of quenching velocity.Four, by the high-strength marine aluminium alloy cylinder of certain type section bar tension force stretching, extensibility 1.6%, then timeliness: 175 ℃ of aging temps, metal heat preservation 8 hours, goes out aging oven.The physics and chemistry testing material of six, timeliness being come out of the stove, the sample position that the standard for acceptance of regulation and drawing are stipulated as agreed, get physics and chemistry sample, tensile strength 245-285MPa, yield strength 200-245MPa, unit elongation 8-15%, after whole physics and chemistry test detections are qualified, by the high-strength marine aluminium alloy cylinder section bar packing of high-strength marine aluminium alloy cylinder section bar surface inspection, dimension inspection, passed examination.
Embodiment 3:
Different from specific embodiment 1 and 2 is, No. six aluminium alloy round cast ingot that adopt in step 1, refining degree reaches the requirement of stair oxidation film, there is no metallic compound segregation, Mg, Si alloy proportion is not according to the conventional ratio of Mg:Si=1.73:1, but Si is superfluous, by Fe, Cu adds as principal element, for putting forward heavy alloyed intensity, Mn is added as principal element, in order to eliminate the detrimentally affect of unnecessary Fe, Si is 0.54%, Fe is 0.172%, Cu is 0.088%, Mn is 0.085%, Mg is 0.53%, Zn is 0.045%, Ti is 0.043%, Cr is 0.04%, single impurity≤0.05%, add up to impurity≤0.15%, all the other are Al, other steps and parameter are identical with embodiment 1.
Embodiment 4
The present embodiment as different from Example 1, woollen homogeneous, Heating temperature: 555 ℃, insulation is more than 10 hours, the type of cooling: air-cooledly add water-cooled cooling to room temperature after 200 ℃, low power checks oxide film, checks compound segregation, meet the requirement of stair oxidation film, other steps and parameter are identical with embodiment 1.
Embodiment 5
As different from Example 1,540 ℃ of Heating temperatures, pack rapidly container into the present embodiment, extrusion speed 3.5M/min, guarantees that quenching temperature is more than 515 ℃, and the cooling employing water spray of Extrusion-quenched is cooling, 380 ℃ of quenching velocity, other steps and parameter are identical with embodiment 1.
Embodiment 6
The present embodiment as different from Example 1, by the high-strength marine aluminium alloy cylinder of certain type section bar tension force stretching, extensibility 1.7%, timeliness then, 175 ℃ of aging temps, metal heat preservation 10 hours, goes out aging oven, other steps and parameter are identical with embodiment 1.
Embodiment 7
As different from Example 1, low power checks oxide film and compound segregation to the present embodiment, tensile strength: 245-287MPa, and yield strength: 200-245MPa, unit elongation: 8-15%, other steps and parameter are identical with one of embodiment one to six.
The technical program has realized high-strength marine aluminium alloy cylinder section bar press quenching and has produced, and meeting under standard-required, raises labour productivity, cost-saving, meets user's demand of ordering goods, can substituting import one, realize production domesticization.
Claims (8)
1. a production method for high-strength marine aluminium alloy cylinder section bar, is characterized in that: described production method realizes according to the following steps:
One, cast aluminium alloy ingot casting, in aluminium alloy cast ingot used, the mass percent Si of element is that 0.50%～0.55%, Fe is that 0.10%～0.20%, Cu is 0.05%～0.09%, Mn is 0.05%～0.09%, Mg is 0. 50%～0.55%, and Zn is that≤0. 10%, Ti is≤0. 10%, Cr is≤0. 10%, single impurity≤0.05%, adds up to impurity≤0.15%, and all the other are Al;
Two, push high-strength marine aluminium alloy cylinder section bar press quenching;
Three, high-strength marine aluminium alloy cylinder section bar tension force stretching, ageing treatment;
Four, high-strength marine aluminium alloy cylinder section bar sampling, inspection;
Five, high-strength marine aluminium alloy cylinder section bar is beaten hardness, packing.
2. the production method of a kind of high-strength marine aluminium alloy cylinder section bar according to claim 1, it is characterized in that: the aluminium alloy cast ingot of casting in step 1 is six line aluminium alloy circle ingot castings, specification is that Φ 320mm * 4000mm or specification are Φ 380mm * 4000mm, aluminium alloy round cast ingot railway carriage, crop, back-end crop, get low power, chemical composition, cut woollen, woollen specification is: specification is Φ 308mm * 1200mm or Φ 368mm * 1450mm, homogenization treatment, Heating temperature: 550-560 ± 5 ℃, be incubated more than 9 hours air-cooled+water-cooled cooling.
3. the production method of a kind of high-strength marine aluminium alloy cylinder section bar according to claim 1, it is characterized in that: the high-strength ship cylinder section bar of extruding aluminium alloy in step 2, be squeezed on 36MN or 55MN extrusion machine and carry out, container diameter is Φ 320mm or Φ 380mm, and ingot casting specification is Φ 308mm * 1200mm or Φ 368mm * 1450mm.
4. according to the production method of a kind of high-strength marine aluminium alloy cylinder section bar described in claim 1 or 3, it is characterized in that: the technical parameter of step 2 extruding is: ingot casting packs into rapidly in container after being heated to 500-550 ℃, 500 ℃-520 ± 5 ℃ of extrusion temperatures, extrusion speed 3 ± 0.5m/min, quenching temperature 500-520 ± 5 ℃, 350～380 ℃/minute of quenching velocity.
5. the production method of a kind of high-strength marine aluminium alloy cylinder section bar according to claim 1, is characterized in that: aluminum alloy high-strength ship cylinder section bar tension force stretching ageing treatment then in step 3, extensibility 1.5～1.7%.
6. the production method of a kind of high-strength marine aluminium alloy cylinder section bar according to claim 1, is characterized in that: described aging temp 150-175 ℃, metal heat preservation 8-15 hour, goes out aging oven.
7. the production method of a kind of high-strength marine aluminium alloy cylinder section bar according to claim 1, it is characterized in that: high-strength marine aluminium alloy cylinder section bar in step 4, the sample position sampling of the standard for acceptance requiring as agreed and drawing regulation, inspection, property indices meets European standard.
8. the production method of a kind of high-strength marine aluminium alloy cylinder section bar according to claim 1, it is characterized in that: the high-strength marine aluminium alloy cylinder of certain type section bar in step 5, the standard for acceptance requiring as agreed and the examination of drawing regulation, surface inspection, dimension inspection, packing delivery.
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| CN105936994A (en) * | 2016-05-31 | 2016-09-14 | 浙江安然电气科技有限公司 | Aluminum alloy profile steel ring material |
| CN106424494A (en) * | 2016-10-13 | 2017-02-22 | 山东裕航特种合金装备有限公司 | Extrusion production technology for coarse grain zone-free forging blank for knuckle forge piece of saloon car |
| CN107937770A (en) * | 2017-11-23 | 2018-04-20 | 湖州亨达铝业有限公司 | A kind of preparation method of highly corrosion resistant marine aluminium alloy |
| CN108018470A (en) * | 2017-12-29 | 2018-05-11 | 西南铝业（集团）有限责任公司 | A kind of optimization preparation process of 6063 aluminium alloy extrusions |
| CN110983118A (en) * | 2019-12-25 | 2020-04-10 | 营口忠旺铝业有限公司 | Production process of aluminum alloy section for cylinder |
| CN111996423A (en) * | 2020-07-10 | 2020-11-27 | 中信渤海铝业控股有限公司 | Aluminum alloy profile for solar photovoltaic frame and preparation method thereof |
| CN112962006A (en) * | 2021-02-02 | 2021-06-15 | 山东裕航特种合金装备有限公司 | Manufacturing method of high-strength long-term-heat-resistant stable aluminum alloy section |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105936994A (en) * | 2016-05-31 | 2016-09-14 | 浙江安然电气科技有限公司 | Aluminum alloy profile steel ring material |
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| CN108018470A (en) * | 2017-12-29 | 2018-05-11 | 西南铝业（集团）有限责任公司 | A kind of optimization preparation process of 6063 aluminium alloy extrusions |
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| CN110983118B (en) * | 2019-12-25 | 2021-02-09 | 营口忠旺铝业有限公司 | Production process of aluminum alloy section for cylinder |
| CN111996423A (en) * | 2020-07-10 | 2020-11-27 | 中信渤海铝业控股有限公司 | Aluminum alloy profile for solar photovoltaic frame and preparation method thereof |
| CN112962006A (en) * | 2021-02-02 | 2021-06-15 | 山东裕航特种合金装备有限公司 | Manufacturing method of high-strength long-term-heat-resistant stable aluminum alloy section |
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