WO2023151433A1 - Environmentally friendly recycling grade-maintaining production method for 6-series high-formability automobile plate - Google Patents

Environmentally friendly recycling grade-maintaining production method for 6-series high-formability automobile plate Download PDF

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WO2023151433A1
WO2023151433A1 PCT/CN2023/070807 CN2023070807W WO2023151433A1 WO 2023151433 A1 WO2023151433 A1 WO 2023151433A1 CN 2023070807 W CN2023070807 W CN 2023070807W WO 2023151433 A1 WO2023151433 A1 WO 2023151433A1
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melting
series high
alloy
production method
automobile sheet
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PCT/CN2023/070807
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French (fr)
Chinese (zh)
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杨立民
隋信栋
顾华锋
张华�
隋荣涛
徐志远
陶志民
于宏
李涛
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山东南山铝业股份有限公司
龙口南山铝压延新材料有限公司
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Publication of WO2023151433A1 publication Critical patent/WO2023151433A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention belongs to the field of automobile plate production in the aluminum processing industry, and specifically relates to a production method of a green recycling grade 6 series high-formed automobile plate.
  • the invention provides a green recycling grade-retaining 6-series high-formed automobile sheet production method, which is used to solve the defects in the prior art.
  • a method for producing a green cycle grade-retaining 6-series high-formed automobile sheet comprising the following steps:
  • Step 1 Put the recovered high-formed 6-series automobile sheet waste into the waste treatment system for melting.
  • the melting temperature is 690-765°C. After the melting is completed, samples are taken to detect the chemical composition;
  • Step 2 According to the test results of the chemical composition in Step 1, use an element remover to reduce the high elements in the alloy to the upper limit of the process requirements;
  • Step 3 Transfer the melted aluminum from the waste treatment system to the melting furnace at a furnace loading ratio of 60-90%.
  • the melting furnace performs alloy proportioning according to the alloy composition of the 6-series high-formed automobile sheet, and the melting temperature is 690-765 °C;
  • Step 4 Transfer the molten alloy after smelting in Step 4 to a holding furnace for refining, the refining temperature is 700-760°C, and the refining time is 20-90 minutes;
  • Step 5 Online slag removal, degassing, and filtration treatment, casting large flat ingots, casting temperature 685-715°C, casting speed 45-55mm/min;
  • Step 6 Eight-sided milling of the large flat ingot, the milling amount of the large face is 10-25mm, and the milling amount of the small face is 3-15mm;
  • Step 7 Homogenize the large slab, the homogenization temperature is 520-585°C, and the holding time is 3-20h;
  • Step 8 When the heating furnace is heated to 510°C, the furnace is turned on for rolling, the final hot rolling temperature is 300-360°C, the final thickness is 3-10mm, and then cold-rolled to 1.5-2.5mm;
  • Step 9 Solid solution treatment at 520-550° C. for 10-55 seconds, and air-cooled to room temperature to obtain a finished product.
  • the content of each element in the second step is limited to: Si, 0-1.20%; Fe, 0-0.35%; Cu, 0-0.13% ; Mn, 0-0.30%; Mg, 0-0.65%; Cr, 0-0.05%; Zn, 0-0.05%; Ti, 0-0.05%.
  • the element scavenger includes:
  • the order of using the element scavenger in the second step is to add the high melting point element scavenger first, and then add the low melting point element scavenger.
  • the waste treatment system needs to add an element scavenger every time aluminum scrap is added, and the amount of the element scavenger added is based on this batch The detection content of each element of waste aluminum is determined.
  • the alloy composition of the 6-series high-profile automotive sheet in the third step includes the following substances in weight percentage: Si, 0.80-1.20%; Fe, 0.10% ⁇ 0.35%; Cu, 0.03 ⁇ 0.13%; Mn, 0.05 ⁇ 0.30%; Mg, 0.20 ⁇ 0.65%; Cr, 0.01 ⁇ 0.05%; Zn, 0.01 ⁇ 0.05%; Ti, 0.02 ⁇ 0.05%.
  • the advantage of the present invention is that: the present invention recycles the high-form aluminum waste recycled by the main engine plant.
  • the traditional production process directly adds the recycled waste aluminum to the melting furnace.
  • This production process uses the recycled 6-series high
  • the formed alloys are classified and used, and then the waste treatment system is used to remove impurities and reduce elements, so that the alloy components meet the proposed process requirements, and then transfer to the smelting furnace for production, that is, smelting-refining-online degassing and slag removal-filtration-casting-heating Rolling - cold rolling - continuous retreat.
  • Recycled scrap automobile panels are produced according to 60%, 90% and 90% of the reclaimed waste from the main engine factory and 10% of the self-produced scrap aluminum. All the indicators of the produced auto sheet meet the requirements of the OEM. In this way, the recycled waste automobile panels can be effectively used for green recycling, and at the same time, it will bring more economic and social benefits to the enterprise.
  • Fig. 1 is the performance detection report of embodiment 1 of the present invention.
  • Fig. 2 is the performance detection report of embodiment 2 of the present invention.
  • Fig. 3 is a performance detection report of Embodiment 3 of the present invention.
  • the mass ratio of the detected chemical components after melting is: Si, 1.15%; Fe, 0.30%; Cu, 0.066%; Mn, 0.21 %; Mg, 0.65%; Cr, 0.017%; Zn, 0.012%; Ti, 0.015%.
  • the slag content is one of the indicators to measure the cleanliness of the melt quality, and the actual detection meets the process requirements.
  • the casting machine casts at a casting temperature of 693°C and a speed of 53mm/min.
  • the thickness of the cold-rolled finished product is 1.5 mm, solution treatment at 545°C for 50 seconds, and air-cooled to room temperature to obtain the finished product.
  • the mass ratio of the detected chemical components after melting is: Si, 1.13%; Fe, 0.29%; Cu, 0.067%; Mn, 0.23 %; Mg, 0.63%; Cr, 0.016%; Zn, 0.015%; Ti, 0.014%.
  • the slag content is one of the standards to measure the cleanliness of the melt quality, and the actual detection meets the process requirements.
  • the casting machine casts at a casting temperature of 696°C and a speed of 55mm/min.
  • the thickness of the cold-rolled finished product is 2.0mm, solution treated at 550°C for 48s, and air-cooled to room temperature to obtain the finished product.
  • the mass ratio of the detected chemical components after melting is: Si, 1.11%; Fe, 0.31%; Cu, 0.068%; Mn, 0.24 %; Mg, 0.59%; Cr, 0.015%; Zn, 0.013%; Ti, 0.013%.
  • the slag content is one of the standards to measure the cleanliness of the melt quality, and the actual detection meets the process requirements.
  • the casting machine casts at a casting temperature of 701°C and a speed of 58mm/min.
  • the thickness of the cold-rolled finished product is 2.5mm, solution treated at 565°C for 40s, and air-cooled to room temperature to obtain the finished product.
  • the performance of the 6-series high-formed automobile sheet prepared by the present invention meets the standard.
  • the present invention improves the cleanliness of the molten aluminum through the recycled 6-series high-formed alloy automobile sheet waste aluminum through a smelting process, and Recycled scrap automobile panels are produced according to 60%, 90% usage, 90% recycled scrap and 10% self-produced scrap aluminum, and the scrap aluminum is recycled and used again.
  • the 6-series high-formation waste automobile sheet of the main engine factory will be recycled and used in the field of automobile sheet, and the waste automobile sheet will no longer be downgraded to die-casting parts, so as to achieve a green and efficient circular economy.

Abstract

An environmentally friendly recycling grade-maintaining production method for a 6-series high-formability automobile plate, which method comprises the following steps: step 1, adding recycled high-formability 6-series automobile plate scrap into a scrap treatment system for melting, sampling the resulting material after melting is completed, and detecting chemical components; step 2, at least reducing high-content elements in an alloy to the required upper limits of the process by using element removers; step 3, transferring molten aluminum into a smelting furnace according to a charging proportion of 60-90%, and performing alloy proportioning in the smelting furnace according to alloy components of the 6-series high-formability automobile plate; step 4, transferring the molten alloy into a heat preservation furnace for refining; step 5, performing online slag removal, degassing and a filtering treatment, and casting a large slab ingot; step 6, subjecting the large slab ingot to octahedral milling; step 7, homogenizing the large slab ingot; step 8, hot-rolling same to 3-10 mm, and then cold-rolling same to 1.5-2.5 mm; and step 9, subjecting same to a solution treatment, and air-cooling same to room temperature, so as to obtain a finished product. The method can effectively realize the environmentally friendly, recycling and grade-maintaining utilization of recycled waste automobile plates, and therefore more economic and social benefits are provided for enterprises.

Description

一种绿色循环保级6系高成型汽车板生产方法A kind of production method of green recycling grade 6 series high-formed automobile sheet 技术领域technical field
本发明属于铝加行业汽车板生产领域，具体地说是一种绿色循环保级6系高成型汽车板生产方法。The invention belongs to the field of automobile plate production in the aluminum processing industry, and specifically relates to a production method of a green recycling grade 6 series high-formed automobile plate.
背景技术Background technique
人们对环境污染越来越重视、能源消耗日益加剧等问题的出现，汽车制造业对汽车车身的轻量化提出了更高的要求。在保证汽车安全的前提下，铝板在汽车上的应用，降低了车身重量，减少汽车的排放。国内汽车板铝加工企业，还没有进行汽车板废铝回收再循环使用，而汽车主机厂将使用后的废铝进行打包低价出售到一般的废铝回收企业，将原有的汽车板合金降级使用到压铸件，没有真正有效的将汽车板使用后的废铝进行再回收循环使用。People are paying more and more attention to environmental pollution and energy consumption is increasing, and the automobile manufacturing industry has put forward higher requirements for the lightweight of automobile bodies. Under the premise of ensuring the safety of the car, the application of aluminum plates in the car reduces the weight of the car body and reduces the emission of the car. Domestic auto sheet aluminum processing companies have not yet recycled scrap aluminum for auto sheets, while auto OEMs package and sell the used scrap aluminum to general scrap aluminum recycling companies at a low price to downgrade the original auto sheet alloys Die-casting parts are used, and there is no real effective recycling of scrap aluminum after the use of automobile panels.
发明内容Contents of the invention
本发明提供一种绿色循环保级6系高成型汽车板生产方法，用以解决现有技术中的缺陷。The invention provides a green recycling grade-retaining 6-series high-formed automobile sheet production method, which is used to solve the defects in the prior art.
本发明通过以下技术方案予以实现：The present invention is achieved through the following technical solutions:
一种绿色循环保级6系高成型汽车板生产方法，包括如下步骤：A method for producing a green cycle grade-retaining 6-series high-formed automobile sheet, comprising the following steps:
步骤一：将回收后的高成型6系汽车板废料加入废料处理系统内进行熔化，熔炼温度在690～765℃，熔化完成后取样检测化学成分；Step 1: Put the recovered high-formed 6-series automobile sheet waste into the waste treatment system for melting. The melting temperature is 690-765°C. After the melting is completed, samples are taken to detect the chemical composition;
步骤二：根据步骤一中的化学成分的检测结果，使用元素去除剂，将合金中高元素降低至工艺要求上限；Step 2: According to the test results of the chemical composition in Step 1, use an element remover to reduce the high elements in the alloy to the upper limit of the process requirements;
步骤三：将废料处理系统熔化后的铝液按60～90％的装炉比例转入到熔炼炉，熔炼炉按6系高成型汽车板的合金成分进行合金配比，熔炼温度为690～765℃；Step 3: Transfer the melted aluminum from the waste treatment system to the melting furnace at a furnace loading ratio of 60-90%. The melting furnace performs alloy proportioning according to the alloy composition of the 6-series high-formed automobile sheet, and the melting temperature is 690-765 ℃;
步骤四：将步骤四熔炼完成后的合金液转到保温炉内进行精炼，精炼温度为700～760℃，精炼时间为20～90min；Step 4: Transfer the molten alloy after smelting in Step 4 to a holding furnace for refining, the refining temperature is 700-760°C, and the refining time is 20-90 minutes;
步骤五：在线除渣、除气、过滤处理，铸造大扁锭，铸造温度685～715℃，铸造速度45～55mm/min；Step 5: Online slag removal, degassing, and filtration treatment, casting large flat ingots, casting temperature 685-715°C, casting speed 45-55mm/min;
步骤六：大扁锭八面铣，大面铣面量10～25mm，小面铣面量3～15mm；Step 6: Eight-sided milling of the large flat ingot, the milling amount of the large face is 10-25mm, and the milling amount of the small face is 3-15mm;
步骤七：大扁锭均匀化，均匀化温度520～585℃，保温时间3～20h；Step 7: Homogenize the large slab, the homogenization temperature is 520-585°C, and the holding time is 3-20h;
步骤八：加热炉加热到510℃时开炉轧制，热轧终轧温度300～360℃，最终厚度3～10mm，然后冷轧至1.5～2.5mm；Step 8: When the heating furnace is heated to 510°C, the furnace is turned on for rolling, the final hot rolling temperature is 300-360°C, the final thickness is 3-10mm, and then cold-rolled to 1.5-2.5mm;
步骤九：在520～550℃温度下固溶处理10～55s，空冷至室温得成品。Step 9: Solid solution treatment at 520-550° C. for 10-55 seconds, and air-cooled to room temperature to obtain a finished product.
如上所述的一种绿色循环保级6系高成型汽车板生产方法，所述的步骤二中各元素含量限定为：Si,0～1.20％；Fe,0～0.35％；Cu,0～0.13％；Mn,0～0.30％；Mg,0～0.65％；Cr,0～0.05％；Zn,0～0.05％；Ti,0～0.05％。As mentioned above, the production method of a green recycling grade 6-series high-formed automobile sheet, the content of each element in the second step is limited to: Si, 0-1.20%; Fe, 0-0.35%; Cu, 0-0.13% ; Mn, 0-0.30%; Mg, 0-0.65%; Cr, 0-0.05%; Zn, 0-0.05%; Ti, 0-0.05%.
如上所述的一种绿色循环保级6系高成型汽车板生产方法，所述的元素清除剂包括：As mentioned above, a kind of green recycling grade-retaining 6-series high-formed automobile sheet production method, the element scavenger includes:
Figure PCTCN2023070807-appb-000001
Figure PCTCN2023070807-appb-000001
如上所述的一种绿色循环保级6系高成型汽车板生产方法，所述的步骤二中元素清除剂使用顺序为先添加高熔点元素清除剂，再添加低熔点元素清除剂。In the above-mentioned production method of a green recycling grade 6-series high-profile automobile sheet, the order of using the element scavenger in the second step is to add the high melting point element scavenger first, and then add the low melting point element scavenger.
如上所述的一种绿色循环保级6系高成型汽车板生产方法，所述的步骤二中废料处理系统每添加一次废铝都需要添加一次元素清除剂，元素清除剂的添加量根据本批次废铝的各元素的检测含量情况确定。As mentioned above, a green recycling method for producing high-profile 6-series high-profile automobile sheets, in the second step, the waste treatment system needs to add an element scavenger every time aluminum scrap is added, and the amount of the element scavenger added is based on this batch The detection content of each element of waste aluminum is determined.
如上所述的一种绿色循环保级6系高成型汽车板生产方法，所述的步骤三中6系高成型汽车板的合金成分包括如下重量百分比的物质：Si,0.80～1.20％；Fe,0.10～0.35％；Cu,0.03～0.13％；Mn,0.05～0.30％；Mg,0.20～0.65％；Cr,0.01～0.05％；Zn,0.01～0.05％；Ti,0.02～0.05％。As mentioned above, a green recycling grade-retaining 6-series high-profile automotive sheet production method, the alloy composition of the 6-series high-profile automotive sheet in the third step includes the following substances in weight percentage: Si, 0.80-1.20%; Fe, 0.10% ~0.35%; Cu, 0.03~0.13%; Mn, 0.05~0.30%; Mg, 0.20~0.65%; Cr, 0.01~0.05%; Zn, 0.01~0.05%; Ti, 0.02~0.05%.
本发明的优点是：本发明将主机厂回收后的高成型废铝进行再次循环使用，传统的生产工艺将回收后的废铝直接加入到熔炼炉，本生产工艺是将回收后的6系高成型合金进行分类使用，再通过废料处理系统进行除杂降低元素的处理，使得合金成分满足拟定工艺要求，再转炉到熔炼炉生产，即熔炼—精炼—在线除气除渣—过滤—铸造—热轧—冷轧—连退。回收废汽车板按装炉量的60％、90％及90％的主机厂回收废料和10％自产废铝进行生产。生产出的汽车板各项指标均满足主机厂的使用要求。这样将回收后的废汽车板能够有效的进行绿色循环保级使用，同时也给企业带来更多的经济和社会效益。The advantage of the present invention is that: the present invention recycles the high-form aluminum waste recycled by the main engine plant. The traditional production process directly adds the recycled waste aluminum to the melting furnace. This production process uses the recycled 6-series high The formed alloys are classified and used, and then the waste treatment system is used to remove impurities and reduce elements, so that the alloy components meet the proposed process requirements, and then transfer to the smelting furnace for production, that is, smelting-refining-online degassing and slag removal-filtration-casting-heating Rolling - cold rolling - continuous retreat. Recycled scrap automobile panels are produced according to 60%, 90% and 90% of the reclaimed waste from the main engine factory and 10% of the self-produced scrap aluminum. All the indicators of the produced auto sheet meet the requirements of the OEM. In this way, the recycled waste automobile panels can be effectively used for green recycling, and at the same time, it will bring more economic and social benefits to the enterprise.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.
图1是本发明实施例1的性能检测报告；Fig. 1 is the performance detection report of embodiment 1 of the present invention;
图2是本发明实施例2的性能检测报告；Fig. 2 is the performance detection report of embodiment 2 of the present invention;
图3是本发明实施例3的性能检测报告。Fig. 3 is a performance detection report of Embodiment 3 of the present invention.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然， 所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
实施例1Example 1
1.1将回收后的高成型6系汽车板废料加入750℃废料处理系统内进行熔化，熔化后的检测化学成分质量比是：Si,1.15％；Fe,0.30％；Cu,0.066％；Mn,0.21％；Mg,0.65％；Cr,0.017％；Zn,0.012％；Ti,0.015％。1.1 Put the recovered high-formed 6-series automobile sheet waste into the waste treatment system at 750°C for melting. The mass ratio of the detected chemical components after melting is: Si, 1.15%; Fe, 0.30%; Cu, 0.066%; Mn, 0.21 %; Mg, 0.65%; Cr, 0.017%; Zn, 0.012%; Ti, 0.015%.
1.2将废料处理系统内熔化合格的回收铝水按60％的装炉量添加到750℃熔炼炉内并与40％比例的电解铝水、重熔锭和中间合金一起熔化。并使用电磁搅拌器以达到熔炼炉内的化学成分均匀。其化学成分质量比是：Si,0.93％；Fe,0.25％；Cu,0.07％；Mn,0.20％；Mg,0.47％；Cr,0.032％；Zn,0.023％；Ti,0.018％。1.2 Add the recycled molten aluminum qualified in the waste treatment system to the 750°C melting furnace at a rate of 60% and melt it together with 40% electrolytic aluminum water, remelted ingots and master alloys. And use an electromagnetic stirrer to achieve uniform chemical composition in the melting furnace. Its chemical composition mass ratio is: Si, 0.93%; Fe, 0.25%; Cu, 0.07%; Mn, 0.20%; Mg, 0.47%; Cr, 0.032%; Zn, 0.023%; Ti, 0.018%.
1.3将熔炼炉的铝水转到745℃保温炉内精炼55分钟，并在线除渣、除气、过滤处理。1.3 Transfer the molten aluminum in the smelting furnace to a 745°C holding furnace for refining for 55 minutes, and then remove slag, degas and filter online.
1.3.1渣含量情况1.3.1 Slag content
Figure PCTCN2023070807-appb-000002
Figure PCTCN2023070807-appb-000002
1.3.2渣含量是衡量熔体质量洁净度的指标之一，实际检测符合工艺要求。1.3.2 The slag content is one of the indicators to measure the cleanliness of the melt quality, and the actual detection meets the process requirements.
1.4铸造机以693℃铸造温度和53mm/min速度进行铸造。1.4 The casting machine casts at a casting temperature of 693°C and a speed of 53mm/min.
1.5将大扁锭大面铣15mm，小面铣面量5mm，并在加热炉内540℃保温5小时，510℃时开炉轧制，热轧终轧温度320℃，厚度7mm。1.5 Mill the large face of the large slab ingot by 15mm and the small face by 5mm, and keep it in a heating furnace at 540°C for 5 hours, and start rolling at 510°C. The final hot rolling temperature is 320°C, and the thickness is 7mm.
1.6冷轧成品厚度1.5mm，545℃温度下固溶处理50s，空冷至室温得成品。1.6 The thickness of the cold-rolled finished product is 1.5 mm, solution treatment at 545°C for 50 seconds, and air-cooled to room temperature to obtain the finished product.
实施例2Example 2
2.1将回收后的高成型6系汽车板废料加入750℃废料处理系统内进行熔 化，熔化后的检测化学成分质量比是：Si,1.13％；Fe,0.29％；Cu,0.067％；Mn,0.23％；Mg,0.63％；Cr,0.016％；Zn,0.015％；Ti,0.014％。2.1 Put the recovered high-formed 6-series automobile sheet waste into the waste treatment system at 750°C for melting. The mass ratio of the detected chemical components after melting is: Si, 1.13%; Fe, 0.29%; Cu, 0.067%; Mn, 0.23 %; Mg, 0.63%; Cr, 0.016%; Zn, 0.015%; Ti, 0.014%.
2.2将废料处理系统内熔化后的回收铝水按90％的装炉量添加到755℃熔炼炉内并与10％比例的电解铝水、重熔锭和中间合金一起熔化。并使用电磁搅拌器以达到熔炼炉内的化学成分均匀。其化学成分质量比是：Si,1.09％；Fe,0.28％；Cu,0.09％；Mn,0.21％；Mg,0.46％；Cr,0.018％；Zn,0.017％；Ti,0.015％。2.2 Add the recycled molten aluminum melted in the waste treatment system to a 755°C melting furnace at a rate of 90% and melt it together with 10% electrolytic aluminum water, remelted ingots and master alloys. And use an electromagnetic stirrer to achieve uniform chemical composition in the melting furnace. Its chemical composition mass ratio is: Si, 1.09%; Fe, 0.28%; Cu, 0.09%; Mn, 0.21%; Mg, 0.46%; Cr, 0.018%; Zn, 0.017%; Ti, 0.015%.
2.3将熔炼炉的铝水转到745℃保温炉内精炼65分钟，并在线除渣、除气、过滤处理。2.3 Transfer the molten aluminum from the smelting furnace to a 745°C holding furnace for refining for 65 minutes, and then remove slag, degas and filter online.
2.3.1渣含量情况2.3.1 Slag content
Figure PCTCN2023070807-appb-000003
Figure PCTCN2023070807-appb-000003
2.3.2渣含量是衡量熔体质量洁净度的标准之一，实际检测符合工艺要求。2.3.2 The slag content is one of the standards to measure the cleanliness of the melt quality, and the actual detection meets the process requirements.
2.4铸造机以696℃铸造温度和55mm/min速度进行铸造。2.4 The casting machine casts at a casting temperature of 696°C and a speed of 55mm/min.
2.5将大扁锭大面铣15mm，小面铣面量5mm，并在加热炉内550℃保温6小时，510℃时开炉轧制，热轧终轧温度340℃，厚度9.0mm。2.5 Mill the large face of the large flat ingot by 15mm and the small face by 5mm, and keep it in a heating furnace at 550°C for 6 hours, and start rolling at 510°C. The hot rolling finish temperature is 340°C, and the thickness is 9.0mm.
2.6冷轧成品厚度2.0mm，550℃温度下固溶处理48s，空冷至室温得成品。2.6 The thickness of the cold-rolled finished product is 2.0mm, solution treated at 550°C for 48s, and air-cooled to room temperature to obtain the finished product.
实施例3Example 3
3.1将回收后的高成型6系汽车板废料加入750℃废料处理系统内进行熔化，熔化后的检测化学成分质量比是：Si,1.11％；Fe,0.31％；Cu,0.068％；Mn,0.24％；Mg,0.59％；Cr,0.015％；Zn,0.013％；Ti,0.013％。3.1 Put the recovered high-formed 6-series automobile sheet waste into the waste treatment system at 750°C for melting. The mass ratio of the detected chemical components after melting is: Si, 1.11%; Fe, 0.31%; Cu, 0.068%; Mn, 0.24 %; Mg, 0.59%; Cr, 0.015%; Zn, 0.013%; Ti, 0.013%.
3.2将废料处理系统内熔化后的回收铝水按90％的装炉量添加到755℃熔炼炉内并与10％的其它合金自产废料一起熔化。并使用电磁搅拌器以达到熔炼炉内的化学成分均匀。其化学成分质量比是：Si,1.18％；Fe,0.33％；Cu,0.12％； Mn,0.28％；Mg,0.57％；Cr,0.017％；Zn,0.018％；Ti,0.016％。3.2 Add the recycled molten aluminum melted in the waste treatment system to the 755°C melting furnace at a rate of 90% of the charge and melt together with 10% of other self-produced alloy scraps. And use an electromagnetic stirrer to achieve uniform chemical composition in the melting furnace. Its chemical composition mass ratio is: Si, 1.18%; Fe, 0.33%; Cu, 0.12%; Mn, 0.28%; Mg, 0.57%; Cr, 0.017%; Zn, 0.018%;
3.3将熔炼炉的铝水转到745℃保温炉内精炼75分钟，在线除渣、除气、过滤处理。3.3 Transfer the molten aluminum from the smelting furnace to a holding furnace at 745°C for refining for 75 minutes, then remove slag, degas and filter online.
3.3.1渣含量情况3.3.1 Slag content
Figure PCTCN2023070807-appb-000004
Figure PCTCN2023070807-appb-000004
3.3.2渣含量是衡量熔体质量洁净度的标准之一，实际检测符合工艺要求。3.3.2 The slag content is one of the standards to measure the cleanliness of the melt quality, and the actual detection meets the process requirements.
3.4铸造机以701℃铸造温度和58mm/min速度进行铸造。3.4 The casting machine casts at a casting temperature of 701°C and a speed of 58mm/min.
3.5将大扁锭大面铣15mm，小面铣面量5mm，并在加热炉内560℃保温8小时，510℃时开炉轧制，热轧终轧温度350℃，厚度9.5mm。3.5 Mill the large face of the large flat ingot by 15mm, and the small face by 5mm, and keep it in a heating furnace at 560°C for 8 hours, and start rolling at 510°C. The hot rolling finish temperature is 350°C, and the thickness is 9.5mm.
3.6冷轧成品厚度2.5mm，565℃温度下固溶处理40s，空冷至室温得成品。3.6 The thickness of the cold-rolled finished product is 2.5mm, solution treated at 565°C for 40s, and air-cooled to room temperature to obtain the finished product.
由图1～3可知，本发明至制备的6系高成型汽车板性能符合标准，本发明通过回收的6系高成型合金的汽车板废铝，通过熔炼工艺提高铝液的清洁度，并将回收废汽车板按60％、90％的使用量及90％的回收废料和10％自产废铝生产，将废铝重新再次循环保级使用。，将主机厂的6系高成型的废汽车板再次循环保护使用到汽车板的领域，不再将废汽车板降级使用到压铸件，做到绿色高效循环经济。It can be seen from Figures 1 to 3 that the performance of the 6-series high-formed automobile sheet prepared by the present invention meets the standard. The present invention improves the cleanliness of the molten aluminum through the recycled 6-series high-formed alloy automobile sheet waste aluminum through a smelting process, and Recycled scrap automobile panels are produced according to 60%, 90% usage, 90% recycled scrap and 10% self-produced scrap aluminum, and the scrap aluminum is recycled and used again. , The 6-series high-formation waste automobile sheet of the main engine factory will be recycled and used in the field of automobile sheet, and the waste automobile sheet will no longer be downgraded to die-casting parts, so as to achieve a green and efficient circular economy.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (5)

  1. 一种绿色循环保级6系高成型汽车板生产方法，其特征在于：包括如下步骤：A kind of production method of green recycling grade 6 series high-formed automobile sheet is characterized in that: comprising the following steps:
    步骤一：将回收后的高成型6系汽车板废料加入废料处理系统内进行熔化，熔炼温度在690～765℃，熔化完成后取样检测化学成分；Step 1: Put the recovered high-formed 6-series automobile sheet waste into the waste treatment system for melting. The melting temperature is 690-765°C. After the melting is completed, samples are taken to detect the chemical composition;
    步骤二：根据步骤一中的化学成分的检测结果，使用元素去除剂，将合金中高元素至少降低至工艺要求上限；Step 2: According to the test results of the chemical composition in Step 1, use an element remover to reduce the high elements in the alloy to at least the upper limit of the process requirements;
    步骤三：将废料处理系统熔化后的铝液按60～90％的装炉比例转入到熔炼炉，熔炼炉按6系高成型汽车板的合金成分进行合金配比，熔炼温度为690～765℃；Step 3: Transfer the melted aluminum from the waste treatment system to the melting furnace at a furnace loading ratio of 60-90%. The melting furnace performs alloy proportioning according to the alloy composition of the 6-series high-formed automobile sheet, and the melting temperature is 690-765 ℃;
    步骤四：将步骤四熔炼完成后的合金液转到保温炉内进行精炼，精炼温度为700～760℃，精炼时间为20～90min；Step 4: Transfer the molten alloy after smelting in Step 4 to a holding furnace for refining, the refining temperature is 700-760°C, and the refining time is 20-90 minutes;
    步骤五：在线除渣、除气、过滤处理，铸造大扁锭，铸造温度685～715℃，铸造速度45～55mm/min；Step 5: Online slag removal, degassing, and filtration treatment, casting large flat ingots, casting temperature 685-715°C, casting speed 45-55mm/min;
    步骤六：大扁锭八面铣，大面铣面量10～25mm，小面铣面量3～15mm；Step 6: Eight-sided milling of the large flat ingot, the milling amount of the large face is 10-25mm, and the milling amount of the small face is 3-15mm;
    步骤七：大扁锭均匀化，均匀化温度520～585℃，保温时间3～20h；Step 7: Homogenize the large slab, the homogenization temperature is 520-585°C, and the holding time is 3-20h;
    步骤八：加热炉加热到510℃时开炉轧制，热轧终轧温度300～360℃，最终厚度3～10mm，然后冷轧至1.5～2.5mm；Step 8: When the heating furnace is heated to 510°C, the furnace is turned on for rolling, the final hot rolling temperature is 300-360°C, the final thickness is 3-10mm, and then cold-rolled to 1.5-2.5mm;
    步骤九：在520～550℃温度下固溶处理10～55s，空冷至室温得成品。Step 9: Solid solution treatment at 520-550° C. for 10-55 seconds, and air-cooled to room temperature to obtain a finished product.
  2. 根据权利要求1所述的一种绿色循环保级6系高成型汽车板生产方法，其特征在于：所述的步骤二中各元素含量限定为：Si,0～1.20％；Fe,0～0.35％；Cu,0～0.13％；Mn,0～0.30％；Mg,0～0.65％；Cr,0～0.05％；Zn,0～0.05％；Ti,0～0.05％。According to claim 1, a kind of production method of green circular grade-retaining 6-series high-formed automobile sheet is characterized in that: the content of each element in the second step is limited to: Si, 0-1.20%; Fe, 0-0.35% ; Cu, 0-0.13%; Mn, 0-0.30%; Mg, 0-0.65%; Cr, 0-0.05%; Zn, 0-0.05%; Ti, 0-0.05%.
  3. 根据权利要求1所述的一种绿色循环保级6系高成型汽车板生产方法， 其特征在于：所述的步骤二中元素清除剂使用顺序为先添加高熔点元素清除剂，再添加低熔点元素清除剂。According to claim 1, a kind of production method of green circular grade-retaining 6-series high-formed automobile sheet is characterized in that: in the step 2, the element scavengers are used in the order of first adding high melting point element scavengers, and then adding low melting point elements Scavengers.
  4. 根据权利要求1所述的一种绿色循环保级6系高成型汽车板生产方法，其特征在于：所述的步骤二中废料处理系统每添加一次废铝都需要添加一次元素清除剂，元素清除剂的添加量根据本批次废铝的各元素的检测含量情况确定。According to claim 1, a kind of production method of green circular grade-retaining 6-series high-formed automobile sheet is characterized in that: in the second step, the waste treatment system needs to add an element scavenger every time aluminum scrap is added, and the element scavenger The amount of addition is determined according to the detected content of each element in this batch of scrap aluminum.
  5. 根据权利要求1所述的一种绿色循环保级6系高成型汽车板生产方法，其特征在于：所述的步骤三中6系高成型汽车板的合金成分包括如下重量百分比的物质：Si,0.80～1.20％；Fe,0.10～0.35％；Cu,0.03～0.13％；Mn,0.05～0.30％；Mg,0.20～0.65％；Cr,0.01～0.05％；Zn,0.01～0.05％；Ti,0.02～0.05％。According to claim 1, a kind of production method of green circular grade-retaining 6-series high-formed automobile sheet is characterized in that: the alloy composition of 6-series high-formed automobile sheet in said step 3 includes the following substances in weight percentage: Si, 0.80 ~1.20%; Fe,0.10~0.35%; Cu,0.03~0.13%; Mn,0.05~0.30%; Mg,0.20~0.65%; Cr,0.01~0.05%; Zn,0.01~0.05%; Ti,0.02~ 0.05%.
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CN112853161A (en) * 2020-12-31 2021-05-28 河南泰鸿新材料有限公司 Aluminum alloy coiled material suitable for new energy automobile chassis lightweight technology and preparation method thereof
CN113061700A (en) * 2021-02-24 2021-07-02 山东南山铝业股份有限公司 High-temperature heat treatment production method of hot-rolled blank for 6-series automobile plate
CN113070361A (en) * 2021-02-24 2021-07-06 山东南山铝业股份有限公司 Hot-rolling special rolling production method for 6-series automobile plate
CN113957304A (en) * 2021-09-29 2022-01-21 河南泰鸿新材料有限公司 Novel environment-friendly 5052 aluminum alloy sheet and preparation method thereof
CN114653771A (en) * 2022-02-10 2022-06-24 山东南山铝业股份有限公司 Production method of green circulating grade-guaranteeing 6-series high-forming automobile plate

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CN116984844A (en) * 2023-09-27 2023-11-03 山东三源铝业有限公司 Manufacturing method of practical new energy water cooling plate

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