CN102994918A - Production method of 5754-H32 aluminum alloy plate strip - Google Patents
Production method of 5754-H32 aluminum alloy plate strip Download PDFInfo
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- CN102994918A CN102994918A CN2012105815226A CN201210581522A CN102994918A CN 102994918 A CN102994918 A CN 102994918A CN 2012105815226 A CN2012105815226 A CN 2012105815226A CN 201210581522 A CN201210581522 A CN 201210581522A CN 102994918 A CN102994918 A CN 102994918A
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Abstract
The invention discloses a production method of a 5754-H32 aluminum alloy plate strip. The production method of the 5754-H32 aluminum alloy plate strip mainly comprises the following steps of: casting, saw cutting, face milling, heating, hot rolling, cold rolling, stabilizing annealing and fine adjusting. During the hot rolling step, hot rolled coil thickness is reserved to be 20%-35% of end product thickness, hot fine rolling final rolling temperature is 320 DEG C-350 DEG C, during the cold rolling step, end product thickness is achieved through one time of secondary cold rolling, and total working rate is 20-35%. For products with an end product thickness >=1.3mm, steps of removing hot rolling blanks to perform complete annealing and middle annealing process can be omitted, accordingly production process is shortened, and production cost is lowered.
Description
Technical field
The present invention relates to aluminium alloy and make the field, particularly relate to a kind of production method of 5754-H24 aluminum alloy sheets and strips.
Background technology
5754 aluminium alloys are that Al-Mg is associated in the gold typical alloy, have medium tenacity, good solidity to corrosion and weldability, easily the characteristics such as shape.5754 aluminum alloy plate materials of different heat treatment state are widely used in the fields such as welding structural element, large roof slab, automobile industry, track traffic and shipping industry, and wherein H32 state Strip is one of as-heat-treated condition of consumption maximum.
The Properties Control scope of 5754-H32 and 5754-H22 is as follows:
| Control criterion | Rm/MPa | Rp 0.2/MPa | A/% |
| EN485-2:2008 | 220～270 | ≥130 | ≥10 |
At present, the common process flow process of 5754-H32 is: founding → sawing → mill face → heating → hot rolling → cold rolling → process annealing → cold rolling → stabilizing annealing → finishing → packing.For slab (thickness 〉=4.0mm), can adopt following technical process: founding → sawing → mill face → heating → hot rolling → Full Annealing → cold rolling → stabilizing annealing → finishing → packing.Thin material technical process is complicated, and the production cycle is long, and for guaranteeing band tissue and performance, cold rolling general working rate should cause hot rolling blank thicker greater than 75% before the process annealing, and cold rolling pass is many, and lumber recovery is low, and cost is high.For the product of finished product thickness 〉=4.0mm, because hot rolling finishing temperature can not effectively be controlled at more than the recrystallization temperature, need hot rolling blank is carried out Full Annealing.
Be to solve Production Flow Chart complicated, the problem that cost is high can adopt H22 to replace the H32 operational path, and technical process is: founding → sawing → mill face → heating → hot rolling → (Full Annealing) → cold rolling → finished products → finishing → packing.
Performance was extremely responsive to temperature variation when 5754 aluminium alloys began to anneal between temperature and the recrystallize finishing temperature at recrystallize, the annealing temperature interval is narrow, only be about 5 ℃, and the nuance that different coiled materials are produced because of composition, front operation causes temperature range different, affect greatly for industrial production in enormous quantities, high to annealing furnace temperature measurement accuracy and temperature homogeneity requirement, the normal rear performance inconsistency lattice phenomenon of annealing that occurs causes yield rate low.
In addition, if hot rolling finishing temperature can not guarantee more than the perfect recrystallization temperature, also can cause the annealing temperature that realizes performance different, thus can not and furnace annealing.For addressing this problem, need to after hot rolling, carry out Full Annealing, to guarantee hot rolling blank performance homogeneous, increased production cost.
Summary of the invention
Based on this, the purpose of this invention is to provide the production method of the short flow process of a kind of 5754-H32 aluminum alloy sheets and strips.
Concrete technical scheme is as follows:
A kind of production method of 5754-H32 aluminum alloy sheets and strips mainly comprises the steps: founding, sawing, mills face, heating, hot rolling, cold rolling, stabilizing annealing, finishing;
In the described hot-rolled step, hot rolled coil thickness is reserved 20%-35% according to finished product thickness, 320-350 ℃ of hot finishing finishing temperature;
In the described cold rolling step, be cold-rolled to finished product thickness through 1 passage, general working rate 20%-35%.
Among some embodiment, in the described heating steps, the ingot casting Heating temperature is 480-520 ℃ therein, and soaking time is 2-5 hour.
Therein among some embodiment, in the described stabilizing annealing step, temperature range 140-200 ℃, soaking time 1-5 hour.
Therein among some embodiment, the mass percent of the chemical composition of ingot casting is after the described founding: Si≤0.3%, Fe0.10～0.40%, Mn0.10～0.40%, Mg2.8～3.3%, Cr0.10～0.30%, Zn≤0.2%, Ti0.01～0.03%, other impurity element is single≤and 0.03%, other impurity element adds up to≤0.10%, all the other are Al; Wherein smelting temperature is 730-750 ℃, refining temperature 720-740 ℃, and casting temp 670-700 ℃.
Another object of the present invention provides the 5754-H32 aluminum alloy sheets and strips that aforementioned production method prepares.
Concrete technical scheme is as follows:
The 5754-H32 aluminum alloy sheets and strips that a kind of aforementioned production method prepares.
Principle of the present invention is: the 5754-H32 Strip is Full Annealing attitude Strip to be carried out certain working modulus carry out stabilizing annealing after cold rolling again and process, as obtaining the good Full Annealing attitude thin stock material of surface quality by hot continuous rolling, then can carry out the cold rolling stabilizing annealing that carries out again of less working modulus to the hot continuous rolling blank, thereby simplify Production Flow Chart.
The present invention can save hot rolling blank is carried out Full Annealing and process annealing operation for the product of finished product thickness 〉=1.3mm, shortens Production Flow Chart, reduces production costs.Compared with prior art, have following beneficial effect:
(1) be 2.0～8.0mm because hot continuous rolling can roll thickness, and finishing temperature is 320-350 ℃, more than 5754 alloy recrystallization temperature, can realize batching self-annealing, product to finished product thickness 〉=1.3mm saves the operation of hot rolling blank being carried out Full Annealing and process annealing, shorten the production cycle, reduce production costs.
(2) cold rolling general working rate is 20-35%, and 1 passage is rolled to finished product thickness, compares with common process, can improve cold rolling production efficiency more than 3 times, and reduces process residue.
(3) finished product Annealing Temperature scope is 140-200 ℃, and the annealing temperature interval of satisfying mechanical property requirements is larger, annealing furnace temperature measurement accuracy and temperature uniformity are required to reduce, and stable performance after the annealing, qualification rate is high.
Embodiment
Below by specific embodiment the present invention is further elaborated.
Embodiment 1
The present embodiment 5754-H32 aluminum alloy sheets and strips short-flow production method comprises following Production Flow Chart: founding → sawing → mill face → heating → hot rolling → cold rolling → stabilizing annealing → finishing → packing.
(1) founding: the chemical composition mass percent of ingot casting is (wt%) after the founding:
| Al | Si | Fe | Cu | Mn |
| 96.2611 | 0.0976 | 0.2516 | 0.0028 | 0.2405 |
| Mg | Ti | Cr | Zn | Ni |
| 2.9369 | 0.0211 | 0.1669 | 0.0181 | 0.0034 |
Smelting temperature is 730-745 ℃, 725～735 ℃ of refining temperatures, 685～700 ℃ of casting temps.
(2) heating: insulation was 4 hours after ingot casting was heated to 490 ℃.
(3) hot rolling: adopt hot continuous rolling production, 440 ℃ of hot roughing last pass temperature, 335 ℃ of hot finishing finishing temperatures, hot rolling blank thickness 3.1mm.
(4) cold rolling: as to be cold-rolled to 2.48mm through 1 passage, general working rate 20%.
(5) stabilizing annealing: 140～200 ℃ of temperature ranges, soaking time 1～5 hour.
Performance after the annealing:
From upper table result as can be known the finished products temperature range be 140-200 ℃, the annealing temperature interval of satisfying mechanical property requirements is larger, annealing furnace temperature measurement accuracy and temperature uniformity are required to reduce, stable performance after the annealing, qualification rate is high.
Embodiment 2:
The production method of the present embodiment 5754-H32 aluminum alloy sheets and strips comprises following Production Flow Chart: founding → sawing → mill face → heating → hot rolling → cold rolling → stabilizing annealing → finishing.
(1) founding: the chemical composition mass percent of ingot casting is after the founding:
| Al | S?i | Fe | Cu | Mn |
| 96.0423 | 0.0531 | 0.1753 | 0.0025 | 0.3025 |
| Mg | Ti | Cr | Zn | Ni |
| 3.2031 | 0.0179 | 0.1834 | 0.0176 | 0.0023 |
Smelting temperature 730-750 ℃, 720～730 ℃ of refining temperatures, 690～700 ℃ of casting temps.
(2) heating: insulation was 3 hours after ingot casting was heated to 505 ℃.
(3) hot rolling: adopt hot continuous rolling production, 435 ℃ of hot roughing last pass temperature, 323 ℃ of hot finishing finishing temperatures, hot rolling blank thickness 2.7mm.
(4) cold rolling: as to be cold-rolled to 2.0mm through 1 passage, general working rate 26%.
(5) stabilizing annealing: 140～200 ℃ of temperature ranges, soaking time 1～5 hour.
Performance after the annealing:
From upper table result as can be known the finished products temperature range be 140-200 ℃, the annealing temperature interval of satisfying mechanical property requirements is larger, annealing furnace temperature measurement accuracy and temperature uniformity are required to reduce, stable performance after the annealing, qualification rate is high.
Embodiment 3:
The production method of the present embodiment 5754-H32 aluminum alloy sheets and strips comprises following Production Flow Chart: founding → sawing → mill face → heating → hot rolling → cold rolling → stabilizing annealing → finishing.
(1) founding: the chemical composition mass percent of ingot casting is (wt%) after the founding:
| Al | S?i | Fe | Cu | Mn |
| 96.0492 | 0.0591 | 0.2762 | 0.0035 | 0.2792 |
| Mg | Ti | Cr | Zn | Ni |
| 3.1496 | 0.0212 | 0.1463 | 0.0128 | 0.0029 |
Smelting temperature 730-745 ℃, 725～740 ℃ of refining temperatures, 690～700 ℃ of casting temps.
(2) heating: insulation was 3 hours after ingot casting was heated to 515 ℃.
(3) hot rolling: adopt hot continuous rolling production, 443 ℃ of hot roughing last pass temperature, 345 ℃ of hot finishing finishing temperatures, hot rolling blank thickness 2.3mm.
(4) cold rolling: as to be cold-rolled to 1.50mm through 1 passage, general working rate 35%.
(5) stabilizing annealing: 140～200 ℃ of temperature ranges, soaking time 1～5 hour.
Performance after the annealing:
From upper table result as can be known the finished products temperature range be 140-200 ℃, the annealing temperature interval of satisfying mechanical property requirements is larger, annealing furnace temperature measurement accuracy and temperature uniformity are required to reduce, stable performance after the annealing, qualification rate is high.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. the production method of a 5754-H32 aluminum alloy sheets and strips is characterized in that, mainly comprises the steps: founding, sawing, mills face, heating, hot rolling, cold rolling, finished products, finishing;
In the described hot-rolled step, hot rolled coil thickness is reserved 20%-35% according to finished product thickness, 320-350 ℃ of hot finishing finishing temperature;
In the described cold rolling step, be cold-rolled to finished product thickness through 1 passage, general working rate 20-35%.
2. the production method of 5754-H32 aluminum alloy sheets and strips according to claim 1 is characterized in that, in the described heating steps, the ingot casting Heating temperature is 480-520 ℃, and soaking time is 2-5 hour.
3. the production method of 5754-H32 aluminum alloy sheets and strips according to claim 1 is characterized in that, in the described stabilizing annealing step, and temperature range 140-200 ℃, soaking time 1-5 hour.
4. the production method of each described 5754-H24 aluminum alloy sheets and strips according to claim 1-3, it is characterized in that, the mass percent of the chemical composition of ingot casting is after the described founding: Si≤0.3%, Fe0.10～0.40%, Mn0.10～0.40%, Mg2.8～3.3%, Cr0.10～0.30%, Zn≤0.2%, Ti0.01～0.03%, other impurity element is single≤and 0.03%, other impurity element adds up to≤0.10%, all the other are Al; Wherein smelting temperature is 730-750 ℃, refining temperature 720-740 ℃, and casting temp 670-700 ℃.
5. 5754-H32 aluminum alloy sheets and strips for preparing such as each production method of claim 1-4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757505A (en) * | 2014-01-21 | 2014-04-30 | 亚洲铝业（中国）有限公司 | High-strength aluminum alloy prepainted sheet strip for vertical lockrand roof tiles and production method thereof |
| CN104190777A (en) * | 2014-09-26 | 2014-12-10 | 中南大学 | One-step shaping method for non-aging reinforced aluminum alloy whole wallboard based on autoclave |
| CN104988441A (en) * | 2015-07-28 | 2015-10-21 | 大力神铝业股份有限公司 | Manufacturing method capable of eliminating Luders slips on surface of 5754 aluminum alloy plate |
| CN108118216A (en) * | 2017-12-22 | 2018-06-05 | 中铝西南铝冷连轧板带有限公司 | A kind of vacuum pump on automobile power assisted braking system housing 5754 aluminum alloy base materials and its production method |
| CN108130461A (en) * | 2017-12-22 | 2018-06-08 | 中铝西南铝冷连轧板带有限公司 | A kind of coachbuilt body column plaque 5754 aluminum alloy base materials and its production method |
| CN109355604A (en) * | 2018-11-27 | 2019-02-19 | 广西柳州银海铝业股份有限公司 | 5083H321 aluminium alloy thick plate preparation method |
| CN112718856A (en) * | 2020-12-14 | 2021-04-30 | 东北轻合金有限责任公司 | Manufacturing method for improving punching Luders belt on surface of 5-series aluminum alloy strip |
| CN115533368A (en) * | 2022-09-27 | 2022-12-30 | 江苏常铝铝业集团股份有限公司 | Method for manufacturing brazing flux-free brazing multi-layer aluminum alloy plate strip for tunnel furnace brazing |
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Cited By (11)
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| CN103757505A (en) * | 2014-01-21 | 2014-04-30 | 亚洲铝业（中国）有限公司 | High-strength aluminum alloy prepainted sheet strip for vertical lockrand roof tiles and production method thereof |
| CN103757505B (en) * | 2014-01-21 | 2016-02-24 | 亚洲铝业（中国）有限公司 | Standing-seam roofing tile aldural colour coated plate band and production method thereof |
| CN104190777A (en) * | 2014-09-26 | 2014-12-10 | 中南大学 | One-step shaping method for non-aging reinforced aluminum alloy whole wallboard based on autoclave |
| CN104190777B (en) * | 2014-09-26 | 2016-06-29 | 中南大学 | A kind of once-forming method of the integral panel of aluminium alloy without ageing strengthening based on autoclave |
| CN104988441A (en) * | 2015-07-28 | 2015-10-21 | 大力神铝业股份有限公司 | Manufacturing method capable of eliminating Luders slips on surface of 5754 aluminum alloy plate |
| CN104988441B (en) * | 2015-07-28 | 2016-10-05 | 大力神铝业股份有限公司 | A kind of manufacture method eliminating 5754 aluminium alloy plate surface luders bands |
| CN108118216A (en) * | 2017-12-22 | 2018-06-05 | 中铝西南铝冷连轧板带有限公司 | A kind of vacuum pump on automobile power assisted braking system housing 5754 aluminum alloy base materials and its production method |
| CN108130461A (en) * | 2017-12-22 | 2018-06-08 | 中铝西南铝冷连轧板带有限公司 | A kind of coachbuilt body column plaque 5754 aluminum alloy base materials and its production method |
| CN109355604A (en) * | 2018-11-27 | 2019-02-19 | 广西柳州银海铝业股份有限公司 | 5083H321 aluminium alloy thick plate preparation method |
| CN112718856A (en) * | 2020-12-14 | 2021-04-30 | 东北轻合金有限责任公司 | Manufacturing method for improving punching Luders belt on surface of 5-series aluminum alloy strip |
| CN115533368A (en) * | 2022-09-27 | 2022-12-30 | 江苏常铝铝业集团股份有限公司 | Method for manufacturing brazing flux-free brazing multi-layer aluminum alloy plate strip for tunnel furnace brazing |
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Effective date of registration: 20160325 Address after: 528000 Guangdong Province Nanhai District of Foshan city Guicheng street lamp Lake Road No. 20 building 6 poly Watertown 33 shop of 33C Patentee after: GUANGDONG ALUHOUSE TECHNOLOGY CO., LTD. Address before: 526238 hi tech Industrial Development Zone, Guangdong, Zhaoqing Patentee before: Asia Aluminum (China) Co., Ltd. |