CN101619403B - Method for removing silicon out of aluminium alloy - Google Patents
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 101
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 68
- 239000010703 silicon Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 26
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 36
- 239000002893 slag Substances 0.000 claims abstract description 27
- 229910004261 CaF 2 Inorganic materials 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000011780 sodium chloride Substances 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 65
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 40
- 239000012535 impurity Substances 0.000 abstract description 14
- 238000003723 Smelting Methods 0.000 abstract description 12
- 229910001610 cryolite Inorganic materials 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 abstract 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 1
- 239000001110 calcium chloride Substances 0.000 abstract 1
- 229910001628 calcium chloride Inorganic materials 0.000 abstract 1
- 235000011148 calcium chloride Nutrition 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 229910001629 magnesium chloride Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 19
- 238000007670 refining Methods 0.000 description 19
- 229910010413 TiO 2 Inorganic materials 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000000746 purification Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910004706 CaSi2 Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
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Abstract
一种金属材料技术领域的去除铝合金中硅元素的方法，包括如下步骤：将铝合金浇注成自耗电极棒，将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔；熔炼完成后，切断电源，冷却，得到铝合金，所述渣料为下列组合物中的一种，所述组合物中的百分数均为重量百分数：5～30％MgF2+30～40％KCl+30～60％MgCl2，5～30％MgF2+30～40％KCl+30～60％NaCl，100％Na3AlF6，10～30％Na3AlF6+30～40％KCl+30～60％NaCl，10～30％Na3AlF6+30～40％KCl+30～60％MgCl2，5～30％CaF2+30～40％KCl+30～60％CaCl2，和5～30％CaF2+30～40％KCl+30～60％NaCl。本发明的方法简单，可有效去除铝合金中低浓度的杂质元素硅，且不会引进新的杂质。
A method for removing silicon in aluminum alloys in the technical field of metal materials, comprising the following steps: pouring aluminum alloys into consumable electrode rods, putting the consumable electrode rods into an electroslag furnace, adding slag material, and conducting electroslag Slag remelting; after the smelting is completed, cut off the power supply and cool to obtain an aluminum alloy. The slag material is one of the following compositions, and the percentages in the composition are all percentages by weight: 5-30% MgF 2 +30 ～40% KCl+30～60% MgCl 2 , 5～30% MgF 2 +30～40% KCl+30～60% NaCl, 100% Na 3 AlF 6 , 10～30% Na 3 AlF 6 +30～40 %KCl+30~60%NaCl, 10~30% Na3AlF6 +30~40 % KCl+30~60% MgCl2 , 5~30% CaF2 +30~40%KCl+30~60% CaCl2 , and 5-30% CaF 2 +30-40% KCl+30-60% NaCl. The method of the invention is simple, can effectively remove low-concentration impurity element silicon in the aluminum alloy, and does not introduce new impurities.
Description
技术领域technical field
本发明涉及一种金属材料技术领域的去除杂质的方法，具体是一种去除铝合金中硅元素的方法。The invention relates to a method for removing impurities in the technical field of metal materials, in particular to a method for removing silicon in aluminum alloys.
背景技术Background technique
由于铝合金具有密度小、比强度高、耐蚀性和成型性好、成本低等一系列优点，因此广泛用于交通运输、电子、桥梁、装饰等行业，用途用量居有色金属材料之冠。而随着铝合金应用的不断扩展，对其纯净度的要求越来越高。硅在大多数变形铝合金中是主要的杂质元素，主要由配制变形铝合金的原材料(原铝等)引入，另外，在铝合金熔炼过程中与耐火材料的接触也会造成硅的污染。而这些引入到变形铝合金体系中的硅元素常与杂质铁元素及其他合金元素生成AlFeMnSi、Mg2Si以及(Fe2Cr)3SiAl12等一些硬脆相。这些与α-Al有着不同的弹性模量、膨胀系数的硬脆相，在受力情形下经常发生脆断，成为材料裂纹源，显著降低加工制品的塑性、变形能力、疲劳寿命和断裂韧性。目前，工业上主要通过偏析法或三层液法来生产纯度较高的精铝和高纯铝，该方法虽然能去除原铝中的硅，但同时也会去除其他大部分微量元素，并且生产效率低，成本高。Because aluminum alloy has a series of advantages such as low density, high specific strength, good corrosion resistance and formability, and low cost, it is widely used in transportation, electronics, bridges, decoration and other industries, and its usage ranks first among non-ferrous metal materials. With the continuous expansion of aluminum alloy applications, the requirements for its purity are getting higher and higher. Silicon is the main impurity element in most deformed aluminum alloys, which is mainly introduced by the raw materials (primary aluminum, etc.) for preparing deformed aluminum alloys. In addition, the contact with refractory materials during the aluminum alloy smelting process will also cause silicon pollution. These silicon elements introduced into the wrought aluminum alloy system often form some hard and brittle phases such as AlFeMnSi, Mg 2 Si and (Fe 2 Cr) 3 SiAl 12 with impurity iron elements and other alloying elements. These hard and brittle phases, which have different elastic modulus and expansion coefficient from α-Al, often undergo brittle fracture under stress and become the source of material cracks, which significantly reduce the plasticity, deformation capacity, fatigue life and fracture toughness of processed products. At present, the industry mainly produces high-purity refined aluminum and high-purity aluminum through the segregation method or the three-layer liquid method. Although this method can remove silicon from primary aluminum, it will also remove most other trace elements at the same time, and produce Low efficiency and high cost.
对现有技术文献进行检索发现：A search of prior art documents found:
日本学者Nagao，M等发表了《Removal of impurity silicon from moltenaluminum alloy with compound method》(Journal of Japan Institute of LightMetals(Japan).Vol.46，no.11，pp.588～591.Nov.1996)，文中做了如下阐述：通过在硅浓度分别为5％和10％的铝熔体中加入3％的Ca元素能形成Ca2Si和CaSi2Al2化合物，过滤去除含硅化合物可达到净化目的，去除效率大概可达到50％左右。但是该方法只适用于原始硅浓度很高的铝熔体，对于原始硅浓度低于1wt％的铝熔体，添加Ca元素很难形成含硅的化合物；Japanese scholar Nagao, M, etc. published "Removal of impurity silicon from molten aluminum alloy with compound method" (Journal of Japan Institute of LightMetals (Japan).Vol.46, no.11, pp.588～591.Nov.1996), The paper makes the following explanation: Ca 2 Si and CaSi 2 Al 2 compounds can be formed by adding 3% Ca element to the aluminum melt with a silicon concentration of 5% and 10% respectively, and the purpose of purification can be achieved by filtering and removing silicon-containing compounds. The removal efficiency can reach about 50%. However, this method is only suitable for aluminum melts with a high original silicon concentration. For aluminum melts with an original silicon concentration lower than 1 wt%, it is difficult to form silicon-containing compounds by adding Ca element;
中国发明专利申请公开文件CN101086042A(公开日：2007.12.12)公开了一种铝合金中杂质元素硅的去除方法，该方法具体为：通过在铝合金熔体中加入含钛物质，反应生成Ti(Al1-xSix)3或钛硅化合物捕获固溶铝合金熔体中的硅元素，然后通过净化工艺去除富硅化合物，达到去除杂质元素硅的目的。该方法可有效去除铝熔体中杂质硅元素，但由于Ti元素在铝熔体中存在一定溶解度，因此会在净化处理后熔体中引入Ti元素，较小范围内改变合金成分。Chinese Invention Patent Application Publication Document CN101086042A (public date: 2007.12.12) discloses a method for removing impurity element silicon in aluminum alloys. Al 1-x Six ) 3 or titanium-silicon compound captures the silicon element in the solid-solution aluminum alloy melt, and then removes the silicon-rich compound through a purification process to achieve the purpose of removing the impurity element silicon. This method can effectively remove the impurity silicon element in the aluminum melt, but because the Ti element has a certain solubility in the aluminum melt, the Ti element will be introduced into the melt after the purification treatment, and the alloy composition will be changed in a small range.
发明内容Contents of the invention
本发明的目的在于克服现有技术的不足，提供一种去除铝合金中硅元素的方法。本发明的方法使用方便，操作工艺简单，可有效去除铝合金中低浓度的杂质元素硅，且不会造成合金元素含量的变化或带来其他有害杂质。The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for removing silicon in aluminum alloys. The method of the invention is convenient to use and simple in operation process, and can effectively remove low-concentration impurity element silicon in the aluminum alloy without causing changes in alloy element content or bringing other harmful impurities.
本发明是通过以下技术方案实现的，The present invention is achieved through the following technical solutions,
本发明涉及一种去除铝合金中硅元素的方法，包括如下步骤：The invention relates to a method for removing silicon in aluminum alloys, comprising the following steps:
步骤一，将铝合金浇注成自耗电极棒；Step 1, casting the aluminum alloy into a consumable electrode rod;
步骤二，将自耗电极棒放入电渣炉内；Step 2, put the consumable electrode rod into the electroslag furnace;
步骤三，加入渣料，进行电渣重熔；Step 3, adding slag material to carry out electroslag remelting;
步骤四，熔炼完成后，切断电源，冷却，得到铝合金；Step 4, after the smelting is completed, cut off the power supply and cool down to obtain aluminum alloy;
其中，所述渣料为下列组合物中的一种：Wherein, the slag is one of the following compositions:
5～30％MgF2+30～40％KCl+30～60％MgCl2，5-30% MgF 2 +30-40% KCl+30-60% MgCl 2 ,
5～30％MgF2+30～40％KCl+30～60％NaCl，5-30% MgF 2 +30-40% KCl+30-60% NaCl,
100％Na3AlF6，100% Na3AlF6 ,
10～30％Na3AlF6+30～40％KCl+30～60％NaCl，10～30% Na3AlF6 +30～40%KCl+30 ～ 60%NaCl,
10～30％Na3AlF6+30～40％KCl+30～60％MgCl2，10-30% Na 3 AlF 6 +30-40% KCl+30-60% MgCl 2 ,
5～30％CaF2+30～40％KCl+30～60％CaCl2，5-30% CaF 2 +30-40% KCl+30-60% CaCl 2 ,
和5～30％CaF2+30～40％KCl+30～60％NaCl；And 5-30% CaF 2 +30-40% KCl+30-60% NaCl;
所述组合物中的百分数均为重量百分数。The percentages in the composition are all percentages by weight.
所述加入渣料的重量为自耗电极棒重量的5～15％。The weight of the added slag is 5-15% of the weight of the consumable electrode rod.
所述电渣重熔，造渣时的电压为40～65V，电流为300～1000A。For the electroslag remelting, the voltage during slagging is 40-65V, and the current is 300-1000A.
所述电渣重熔，重熔自耗电极时，向结晶器中通入氩气。The electroslag is remelted, and when remelting the consumable electrode, argon gas is passed into the crystallizer.
所述电渣重熔，重熔自耗电极时，电流控制在300～1000A。When the electroslag remelting and consumable electrodes are remelted, the current is controlled at 300-1000A.
所述冷却的时间为10～40分钟。The cooling time is 10-40 minutes.
利用本发明的方法，在铝合金(自耗电极)熔化后，铝熔体中的杂质硅元素与电渣液中的熔剂发生物理化学反应生成SiF4气体溢出，从而达到净化铝合金中杂质硅元素的目的。Using the method of the present invention, after the aluminum alloy (consumable electrode) is melted, the impurity silicon element in the aluminum melt reacts with the flux in the electroslag liquid to generate SiF gas overflowing, thereby achieving the purification of impurities in the aluminum alloy purpose of silicon.
与现有技术相比，本发明具有如下的有益效果：本发明通过采用合适的渣系对Si含量低于1wt％铝合金进行电渣重熔，可使铝合金中的硅含量降低30％～50％，实现铝熔体中硅元素的有效去除，所用电渣来源广泛、价格低廉，整个净化过程操作工艺简便，不会带来其他有害杂质元素，也不会造成合金元素含量的变化。Compared with the prior art, the present invention has the following beneficial effects: the present invention can reduce the silicon content in the aluminum alloy by 30%- 50%, realize the effective removal of silicon in the aluminum melt, the source of electroslag used is wide, the price is low, the operation process of the whole purification process is simple, it will not bring other harmful impurity elements, and will not cause changes in the content of alloy elements.
附图说明Description of drawings
图1为本发明的工艺流程图。Fig. 1 is a process flow diagram of the present invention.
具体实施方式Detailed ways
下面对本发明的实施例作详细说明：本实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。除非特别说明，以下实施例中的百分数为重量百分数。The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following implementation example. Unless otherwise specified, the percentages in the following examples are percentages by weight.
实施例1Example 1
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ70mm，重量12千克；引弧剂为碳电极15g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为40V，电流为300～400A；重熔自耗电极时，向结晶器中通入氩气，电流控制在300A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为Na3AlF6，加入量为自耗电极重量的15％，为1.8千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ70mm, and the weight is 12 kg; the arc starting agent is 15g of carbon electrode; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace, Add slag material and carry out electroslag remelting with a voltage of 40V and a current of 300-400A; when remelting the self-consumable electrode, pass argon gas into the crystallizer and control the current at 300A; after the smelting is completed, cut off the power supply and cool down , to obtain an aluminum alloy, the selected electroslag material is Na 3 AlF 6 , and the addition amount is 15% of the weight of the consumable electrode, which is 1.8 kg.
本实例中，含硅量0.33％的铝合金精炼后含硅量降低到0.17％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.33% is reduced to 0.17% after refining.
实施例2Example 2
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ62mm，重量11千克；引弧剂为碳电极12g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为40V，电流为500～550A；重熔自耗电极时，向结晶器中通入氩气，电流控制在1000A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％MgF2+30％KCl+40％MgCl2，加入量为自耗电极重量的5％，为0.55千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ62mm, and the weight is 11 kg; the arc starting agent is 12g of carbon electrode; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace, Add slag material and carry out electroslag remelting with a voltage of 40V and a current of 500-550A; when remelting the self-consumable electrode, pass argon gas into the crystallizer and control the current at 1000A; after the smelting is completed, cut off the power supply and cool , to obtain an aluminum alloy, the selected electroslag material is 30% MgF 2 +30% KCl + 40% MgCl 2 , and the addition amount is 5% of the weight of the consumable electrode, which is 0.55 kg.
本实例中，含硅量0.20％的铝合金精炼后含硅量降低到0.12％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.20% is reduced to 0.12% after refining.
实施例3Example 3
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ60mm，重量10千克；引弧剂为碳电极12g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为45V，电流为500～600A；重熔自耗电极时，向结晶器中通入氩气，电流控制在600A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％MgF2+40％KCl+30％MgCl2，加入量为自耗电极重量的5％，为0.5千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ60mm, and the weight is 10 kg; the arc starting agent is 12g of carbon electrode; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace, Add slag material and carry out electroslag remelting with a voltage of 45V and a current of 500-600A; when remelting the self-consumable electrode, pass argon gas into the crystallizer and control the current at 600A; after the smelting is completed, cut off the power supply and cool down , to obtain an aluminum alloy, the selected electroslag material is 30% MgF 2 +40% KCl+30% MgCl 2 , and the addition amount is 5% of the weight of the consumable electrode, which is 0.5 kg.
本实例中，含硅量0.22％的铝合金精炼后含硅量降低到0.11％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.22% is reduced to 0.11% after refining.
实施例4Example 4
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ60mm，重量10千克；引弧剂为碳电极10g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为45V，电流为500～600A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为5％MgF2+35％KCl+60％MgCl2，加入量为自耗电极重量的8％，为0.8千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ60mm, and the weight is 10 kg; the arc starting agent is 10g of carbon electrode; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace, Add slag material and carry out electroslag remelting with a voltage of 45V and a current of 500-600A; after the smelting is completed, cut off the power supply and cool to obtain an aluminum alloy. The selected electroslag material is 5% MgF 2 +35% KCl+ 60% MgCl 2 , the added amount is 8% of the weight of the consumable electrode, which is 0.8 kg.
本实例中，含硅量0.17％的铝合金精炼后含硅量降低到0.10％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.17% is reduced to 0.10% after refining.
实施例5Example 5
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ40mm，重量8千克；引弧剂为CaF2与TiO2的混合物，配比为1∶1，共10g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为65V，电流为700～800A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％MgF2+40％KCl+30％NaCl，加入量为自耗电极重量的10％，为0.8千克。The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ40mm, and the weight is 8 kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:1, a total of 10g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 65V and a current of 700-800A; The electroslag material is 30% MgF 2 +40% KCl+30% NaCl, and the addition amount is 10% of the weight of the consumable electrode, which is 0.8 kg.
本实例中，含硅量0.28％的铝合金精炼后含硅量降低到0.16％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.28% is reduced to 0.16% after refining.
实施例6Example 6
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ45mm，重量9千克；引弧剂为CaF2与TiO2的混合物，配比为1∶1，共9g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为60V，电流为600～750A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为10％MgF2+30％KCl+60％NaCl，加入量为自耗电极重量的9％，为0.81千克。The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ45mm, and the weight is 9kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:1, a total of 9g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 60V and a current of 600-750A; The electroslag material is 10% MgF 2 +30% KCl+60% NaCl, and the addition amount is 9% of the weight of the consumable electrode, which is 0.81 kg.
本实例中，含硅量0.25％的铝合金精炼后含硅量降低到0.13％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.25% is reduced to 0.13% after refining.
实施例7Example 7
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ50mm，重量11千克；引弧剂为CaF2与TiO2的混合物，配比为1∶1，共12g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为60V，电流为700～800A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为5％MgF2+40％KCl+55％NaCl，加入量为自耗电极重量的10％，为1.1千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ50mm, and the weight is 11 kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:1, a total of 12g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 60V and a current of 700-800A; The electroslag material is 5% MgF 2 +40% KCl+55% NaCl, and the addition amount is 10% of the weight of the consumable electrode, which is 1.1 kg.
本实例中，含硅量0.17％的铝合金精炼后含硅量降低到0.09％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.17% is reduced to 0.09% after refining.
实施例8Example 8
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ65mm，重量20千克；引弧剂为CaF2与TiO2的混合物，配比为1∶1.5，共20g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为40V，电流为950～1000A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为10％Na3AlF6+30％KCl+60％NaCl，加入量为自耗电极重量的10％，为2千克。The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ65mm, and the weight is 20 kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:1.5, a total of 20g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 40V and a current of 950-1000A; The electroslag material is 10% Na 3 AlF 6 +30% KCl+60% NaCl, and the addition amount is 10% of the weight of the consumable electrode, which is 2 kg.
本实例中，含硅量0.15％的铝合金精炼后含硅量降低到0.08％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.15% is reduced to 0.08% after refining.
实施例9Example 9
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ60mm，重量12千克；引弧剂为CaF2与TiO2的混合物，配比为1∶1.5，共11g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为45V，电流为600～700A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为25％Na3AlF6+30％KCl+45％NaCl，加入量为自耗电极重量的10％，为1.2千克。The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ60mm, and the weight is 12 kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:1.5, a total of 11g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 45V and a current of 600-700A; after the melting is completed, cut off the power supply and cool to obtain aluminum alloy. The electroslag material is 25% Na 3 AlF 6 + 30% KCl + 45% NaCl, and the addition amount is 10% of the weight of the consumable electrode, which is 1.2 kg.
本实例中，含硅量0.26％的铝合金精炼后含硅量降低到0.13％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.26% is reduced to 0.13% after refining.
实施例10Example 10
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ60mm，重量16千克；The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ60mm, and the weight is 16 kg;
引弧剂为CaF2与TiO2的混合物，配比为1∶1.5，共12g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为40V，电流为800～900A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％Na3AlF6+40％KCl+30％NaCl，加入量为自耗电极重量的10％，为1.6千克。The arc ignition agent is a mixture of CaF 2 and TiO 2 with a ratio of 1:1.5, 12g in total; the inner diameter of the crystallizer is 100mm; Melting, the voltage is 40V, and the current is 800-900A; after the smelting is completed, cut off the power supply and cool to obtain aluminum alloy. The selected electroslag material is 30% Na 3 AlF 6 + 40% KCl + 30% NaCl. 10% of the weight of the self-consumable electrode is 1.6 kg.
本实例中，含硅量0.13％的铝合金精炼后含硅量降低到0.07％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.13% is reduced to 0.07% after refining.
实施例11Example 11
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ70mm，重量15千克；引弧剂为CaF2与TiO2的混合物，配比为1∶2，共18g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为50V，电流为500～600A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％Na3AlF6+40％KCl+30％MgCl2，加入量为自耗电极重量的8％，为1.2千克。The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ70mm, and the weight is 15kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:2, a total of 18g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 50V and a current of 500-600A; after the melting is completed, cut off the power supply and cool to obtain aluminum alloy. The electroslag material is 30% Na 3 AlF 6 +40% KCl+30% MgCl 2 , and the addition amount is 8% of the weight of the consumable electrode, which is 1.2 kg.
本实例中，含硅量0.80％的铝合金精炼后含硅量降低到0.52％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.80% is reduced to 0.52% after refining.
实施例12Example 12
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ70mm，重量20千克；引弧剂为CaF2与TiO2的混合物，配比为1∶2，共12g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为60V，电流为700～800A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为10％Na3AlF6+30％KCl+60％MgCl2，加入量为自耗电极重量的8％，为1.6千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ70mm, and the weight is 20kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:2, a total of 12g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 60V and a current of 700-800A; The electroslag material is 10% Na 3 AlF 6 + 30% KCl + 60% MgCl 2 , and the addition amount is 8% of the weight of the consumable electrode, which is 1.6 kg.
本实例中，含硅量0.51％的铝合金精炼后含硅量降低到0.34％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.51% is reduced to 0.34% after refining.
实施例13Example 13
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ60mm，重量12千克；Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ60mm, and the weight is 12 kg;
引弧剂为CaF2与TiO2的混合物，配比为1∶2，共10g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为65V，电流为500～600A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为20％Na3AlF6+40％KCl+40％MgCl2，加入量为自耗电极重量的8％，为0.96千克。The arc ignition agent is a mixture of CaF 2 and TiO 2 with a ratio of 1:2, a total of 10g; the inner diameter of the crystallizer is 100mm; Melting, the voltage is 65V, and the current is 500-600A; after the smelting is completed, cut off the power supply and cool to obtain an aluminum alloy. The selected electroslag material is 20% Na 3 AlF 6 +40% KCl+40% MgCl 2 The amount is 8% of the weight of the consumable electrode, which is 0.96 kg.
本实例中，含硅量0.11％的铝合金精炼后含硅量降低到0.05％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.11% is reduced to 0.05% after refining.
实施例14Example 14
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ70mm，重量13千克；引弧剂为CaF2与TiO2的混合物，配比为1∶2，共15g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为45V，电流为400～500A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％CaF2+40％KCl+30％CaCl2，加入量为自耗电极重量的10％，为1.3千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ70mm, and the weight is 13 kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:2, a total of 15g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 45V and a current of 400-500A; after the melting is completed, cut off the power supply and cool to obtain aluminum alloy. The electroslag material is 30% CaF 2 +40% KCl+30% CaCl 2 , and the addition amount is 10% of the weight of the consumable electrode, which is 1.3 kg.
本实例中，含硅量0.52％的铝合金精炼后含硅量降低到0.31％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.52% is reduced to 0.31% after refining.
实施例15Example 15
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ50mm，重量15千克；引弧剂为CaF2与TiO2的混合物，配比为1∶2，共12g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为45V，电流为500～600A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为5％CaF2+35％KCl+60％CaCl2，加入量为自耗电极重量的10％，为1.5千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ50mm, and the weight is 15kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:2, a total of 12g; the inner diameter of the crystallizer is 100mm ;Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 45V and a current of 500-600A; after the melting is completed, cut off the power supply and cool to obtain aluminum alloy. The electroslag material is 5% CaF 2 +35% KCl+60% CaCl 2 , and the addition amount is 10% of the weight of the consumable electrode, which is 1.5 kg.
本实例中，含硅量0.34％的铝合金精炼后含硅量降低到0.18％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.34% is reduced to 0.18% after refining.
实施例16Example 16
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ55mm，重量16千克；引弧剂为CaF2与TiO2的混合物，配比为1∶2，共15g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为60V，电流为700～800A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为20％CaF2+30％KCl+50％CaCl2，加入量为自耗电极重量的8％，为1.3千克。The aluminum alloy is poured into a consumable electrode rod, the size of the aluminum alloy electrode is Φ55mm, and the weight is 16 kg; the arc ignition agent is a mixture of CaF 2 and TiO 2 , the ratio is 1:2, a total of 15g; the inner diameter of the crystallizer is 100mm ; Put the consumable electrode rod into the electroslag furnace, add slag material, and carry out electroslag remelting with a voltage of 60V and a current of 700-800A; The electroslag material is 20% CaF 2 +30% KCl+50% CaCl 2 , and the addition amount is 8% of the weight of the consumable electrode, which is 1.3 kg.
本实例中，含硅量0.22％的铝合金精炼后含硅量降低到0.12％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.22% is reduced to 0.12% after refining.
实施例17Example 17
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ64mm，重量12千克；引弧剂为碳电极，共13g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为50V，电流为500～600A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为30％CaF2+40％KCl+30％NaCl，加入量为自耗电极重量的8％，为0.96千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ64mm, and the weight is 12 kg; the arc ignition agent is a carbon electrode, a total of 13g; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace Inside, add slag material and carry out electroslag remelting with a voltage of 50V and a current of 500-600A; after the smelting is completed, cut off the power supply and cool to obtain aluminum alloy. The selected electroslag material is 30% CaF 2 +40% KCl+30% NaCl, the addition amount is 8% of the weight of the consumable electrode, which is 0.96 kg.
本实例中，含硅量0.24％的铝合金精炼后含硅量降低到0.13％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.24% is reduced to 0.13% after refining.
实施例18Example 18
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ60mm，重量15千克；引弧剂为碳电极，共10g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为60V，电流为600～700A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为5％CaF2+35％KCl+60％NaCl，加入量为自耗电极重量的10％，为1.5千克。Cast the aluminum alloy into a consumable electrode rod, the aluminum alloy electrode size is Φ60mm, and the weight is 15 kg; the arc ignition agent is a carbon electrode, a total of 10g; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace Inside, add slag material and carry out electroslag remelting with a voltage of 60V and a current of 600-700A; after the smelting is completed, cut off the power supply and cool to obtain aluminum alloy. The selected electroslag material is 5% CaF 2 +35% KCl+60% NaCl, the addition amount is 10% of the weight of the consumable electrode, which is 1.5 kg.
本实例中，含硅量0.14％的铝合金精炼后含硅量降低到0.09％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.14% is reduced to 0.09% after refining.
实施例19Example 19
将铝合金浇注成自耗电极棒，铝合金电极尺寸为Φ50mm，重量12千克；引弧剂为碳电极，共14g；结晶器内径尺寸为100mm；将自耗电极棒放入电渣炉内，加入渣料，进行电渣重熔，电压为50V，电流为600～700A；熔炼完成后，切断电源，冷却，得到铝合金，所选用的电渣渣料为20％CaF2+30％KCl+50％NaCl，加入量为自耗电极重量的9％，为1.1千克。Cast the aluminum alloy into a consumable electrode rod, the size of the aluminum alloy electrode is Φ50mm, and the weight is 12 kg; the arc ignition agent is a carbon electrode, a total of 14g; the inner diameter of the crystallizer is 100mm; put the consumable electrode rod into the electroslag furnace Inside, add slag material and carry out electroslag remelting with a voltage of 50V and a current of 600-700A; after the smelting is completed, cut off the power supply and cool to obtain aluminum alloy. The selected electroslag material is 20% CaF 2 +30% KCl+50% NaCl, the addition amount is 9% of the weight of the consumable electrode, which is 1.1 kg.
本实例中，含硅量0.23％的铝合金精炼后含硅量降低到0.13％。In this example, the silicon content of the aluminum alloy with a silicon content of 0.23% is reduced to 0.13% after refining.
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|---|---|---|---|---|
| CN1580300A (en) * | 2003-10-24 | 2005-02-16 | 河南中原特殊钢厂 | Copper alloy electroslag remelting process |
| CN101285125A (en) * | 2008-05-23 | 2008-10-15 | 中国船舶重工集团公司第七二五研究所 | Electroslag remelting slag for nickel aluminum bronze |
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2009
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580300A (en) * | 2003-10-24 | 2005-02-16 | 河南中原特殊钢厂 | Copper alloy electroslag remelting process |
| CN101285125A (en) * | 2008-05-23 | 2008-10-15 | 中国船舶重工集团公司第七二五研究所 | Electroslag remelting slag for nickel aluminum bronze |
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