阅读说明：本技术 一种建筑铝模板用中强高韧压铸铝合金材料及其制备方法 (Medium-strength high-toughness die-casting aluminum alloy material for building aluminum template and preparation method thereof ) 是由 杨平旺 刘胜强 闵胜全 邓艾 陆威成 于 2021-08-06 设计创作，主要内容包括：本发明涉及铝合金材料技术领域,具体是一种建筑铝模板用中强高韧压铸铝合金材料及其制备方法,一种建筑铝模板用中强高韧压铸铝合金材料,按重量百分比计,包括如下组分：Fe含量为1.0-2.0%,Mg含量为4.6-6.5%,Zn含量为0-4.5%,其中杂质总含量小于1%,单个杂质含量小于0.2%,其余为铝,本发明中调整合金化方法,结合一定的压铸工艺,采用标准拉伸样进行性能测试,获得一种中等强度高韧性压铸铝合金材料,本发明中通过大量合金化实验研究发现随着镁含量与锌含量增加而增加,屈服强度能够增加到145MPa以上,抗拉强度能够增加到280MPa以上,但控制好其比例及范围,延伸率依旧可以保持在9%以上,本发明材料所生产的铝模板具有高强度、高韧性、轻量化、高精密度、少加工、重复利用率高等优势。(The invention relates to the technical field of aluminum alloy materials, in particular to a medium-strength high-toughness die-casting aluminum alloy material for a building aluminum template and a preparation method thereof, and the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template comprises the following components in percentage by weight: the invention relates to a medium-strength high-toughness die-casting aluminum alloy material, which comprises 1.0-2.0% of Fe, 4.6-6.5% of Mg and 0-4.5% of Zn, wherein the total impurity content is less than 1%, the single impurity content is less than 0.2%, and the balance is aluminum.)

1. The utility model provides a building aluminium template is with die-casting aluminium alloy material of well strong high tenacity which characterized in that: the paint comprises the following components in percentage by weight: 1.0-2.0% of Fe, 4.6-6.5% of Mg, 0-4.5% of Zn, wherein the total content of impurities is less than 1%, the content of single impurities is less than 0.2%, and the balance is aluminum.

2. The medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 1, is characterized in that: the Fe content is 1.4-1.8 wt%.

3. The medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 1, is characterized in that: the Mg content is 5.6-6 wt%.

4. The medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 1, is characterized in that: the Zn content is 0-3 wt%.

5. The preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: the method comprises the following steps:

the first step is as follows: adding a pure aluminum ingot into a smelting furnace, and heating the pure aluminum ingot to 850 ℃ through the smelting furnace until the pure aluminum ingot is completely melted;

the second step is that: adding an iron agent into a smelting furnace of a completely melted pure aluminum ingot, and controlling the temperature of aluminum liquid in the smelting furnace at 750-820 ℃;

the third step: after the iron agent in the smelting furnace is completely melted, controlling the temperature of the smelting furnace to be within the range of 720-740 ℃, and adding magnesium waste and waste zinc into the smelting furnace;

the fourth step: after the magnesium waste and the waste zinc in the smelting furnace are completely melted, controlling the temperature of the smelting furnace within the range of 670-;

the fifth step: stirring the molten aluminum in the smelting furnace, slagging off the smelting furnace, and carrying out component assay on the molten aluminum in the smelting furnace;

and a sixth step: and carrying out die casting process on the aluminum liquid, and carrying out die casting operation through a die casting machine.

6. The preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 5, wherein the method comprises the following steps: after the iron agent is completely melted, the temperature of the smelting furnace is reduced to 720-740 ℃.

7. The preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 5, wherein the method comprises the following steps: and after the magnesium waste and the waste zinc in the smelting furnace are completely melted, cooling the smelting furnace to 670-710 ℃.

8. The preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 5, wherein the method comprises the following steps: the detection value of the component assay is in a required range, and the content of each metal is as follows: 1.0-2.0wt% of Fe, 4.6-6.5wt% of Mg, 0-4.5wt% of Zn, less than 1% of total impurities, less than 0.2% of single impurities and the balance of aluminum.

9. The preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 5, wherein the method comprises the following steps: in the die casting process, the temperature of the aluminum liquid is kept within the range of 670-.

10. The preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template as claimed in claim 5, wherein the method comprises the following steps: the aluminum liquid die casting speed in the die casting process is as follows: second speed is 0.23-0.3 m/s; the third speed is 2.0-2.5 m/s.

Technical Field

The invention relates to the technical field of aluminum alloy materials, in particular to a medium-strength high-toughness die-casting aluminum alloy material for a building aluminum template and a preparation method thereof.

Background

Traditional building templates are all made using steel templates. At present, the aluminum alloy building template is applied to building construction. However, the traditional building aluminum template mainly uses extruded sections, the sections of parts are more, welding points directly act on a panel, the formed aluminum alloy template has larger deformation and needs to be corrected, and the production efficiency is lower; because the multi-component welding component is formed by welding a plurality of components, the integrity is poor, the multi-component welding component is easy to break or smash, the turnover frequency is low, the processing cost and the use cost are high, and a large amount of time and cost are saved by adopting a die-casting forming process.

In the prior art, the following problems exist:

according to the traditional die-casting aluminum alloy material used in large quantities, ADC12, the elongation is only 3-5% generally, the toughness of the material is not enough, the yield strength of the traditional die-casting aluminum alloy material used in large quantities is generally less than 145Mpa, meanwhile, the tensile strength is generally less than 280Mpa, the elongation of the die-casting aluminum alloy material cannot be guaranteed, and the applicability of the die-casting aluminum alloy material is reduced.

Disclosure of Invention

The invention aims to provide a medium-strength high-toughness die-casting aluminum alloy material for a building aluminum template and a preparation method thereof, and aims to solve the problems in the background technology.

The technical scheme of the invention is as follows: the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template comprises the following components in percentage by weight: 1.0-2.0% of Fe, 4.6-6.5% of Mg, 0-4.5% of Zn, wherein the total content of impurities is less than 1%, the content of single impurities is less than 0.2%, and the balance is aluminum.

Preferably, the Fe content is 1.4-1.8 wt%.

Preferably, the Mg content is 5.6 to 6 wt%.

Preferably, the Zn content is 0 to 3 wt%.

Preferably, the preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template is characterized by comprising the following steps of: the method comprises the following steps:

the first step is as follows: adding a pure aluminum ingot into a smelting furnace, and heating the pure aluminum ingot to 850 ℃ through the smelting furnace until the pure aluminum ingot is completely melted;

the second step is that: adding an iron agent into a smelting furnace of a completely melted pure aluminum ingot, and controlling the temperature of aluminum liquid in the smelting furnace at 750-820 ℃;

the third step: after the iron agent in the smelting furnace is completely melted, controlling the temperature of the smelting furnace to be within the range of 720-740 ℃, and adding magnesium waste and waste zinc into the smelting furnace;

the fourth step: after the magnesium waste and the waste zinc in the smelting furnace are completely melted, controlling the temperature of the smelting furnace within the range of 670-;

the fifth step: stirring the molten aluminum in the smelting furnace, slagging off the smelting furnace, and carrying out component assay on the molten aluminum in the smelting furnace;

and a sixth step: and carrying out die casting process on the aluminum liquid, and carrying out die casting operation through a die casting machine.

Preferably, after the iron agent is completely melted, the temperature of the smelting furnace is reduced to 720-740 ℃.

Preferably, after the magnesium waste and the waste zinc in the smelting furnace are completely melted, the temperature of the smelting furnace is reduced to 670-710 ℃.

Preferably, the detection value of the component assay is within a required range, and the content of each metal is as follows: 1.0-2.0wt% of Fe, 4.6-6.5wt% of Mg, 0-4.5wt% of Zn, less than 1% of total impurities, less than 0.2% of single impurities and the balance of aluminum.

Preferably, in the die casting process, the temperature of the aluminum liquid is kept within the range of 670-710 ℃ for die casting, and an aluminum alloy standard (GB/T13822-2017) tensile test bar is selected as the die.

Preferably, the aluminum liquid die casting speed in the die casting process is as follows: second speed is 0.23-0.3 m/s; the third speed is 2.0-2.5 m/s.

Compared with the prior art, the invention provides a medium-strength high-toughness die-casting aluminum alloy material for a building aluminum template and a preparation method thereof through improvement, and the medium-strength high-toughness die-casting aluminum alloy material has the following improvement and advantages:

one is as follows: in the invention, an alloying method is adjusted, a certain die-casting process is combined, and a standard tensile sample is adopted for performance test to obtain a medium-strength high-toughness die-casting aluminum alloy material, and a large amount of alloying experimental researches show that the yield strength can be increased to more than 145MPa and the tensile strength can be increased to more than 280MPa along with the increase of the magnesium content and the zinc content, but the proportion and the range are well controlled, and the elongation can still be kept to more than 9%;

the second step is as follows: the aluminum template produced by the material has the advantages of high strength, high toughness, light weight, high precision, less processing, high repeated utilization rate and the like.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a table 4 data diagram of the present invention;

FIG. 2 is a table 3 data diagram of the present invention;

FIG. 3 is a table 2 data diagram of the present invention;

FIG. 4 is a chart of the data of Table 1 of the present invention.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a medium-strength high-toughness die-casting aluminum alloy material for a building aluminum template and a preparation method thereof through improvement, and the technical scheme of the invention is as follows:

the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template and the preparation method thereof comprise the following components in percentage by weight: 1.0-2.0% of Fe, 4.6-6.5% of Mg, 0-4.5% of Zn, wherein the total content of impurities is less than 1%, the content of single impurities is less than 0.2%, and the balance is aluminum.

Preferably, the Fe content is 1.4-1.8 wt%.

Preferably, the Mg content is 5.6 to 6 wt%.

Preferably, the Zn content is 0 to 3 wt%.

Through a large amount of alloying experimental researches, the invention discovers that when the content of Fe in the aluminum alloy is 1.0-2.0wt%, the content of Mg is 4.6-6.5wt%, the content of Zn is 0-4.5wt%, the total content of impurities is less than 1%, the single amount is less than 0.2%, and the balance is aluminum; the yield strength of the aluminum alloy die casting can be increased to more than 145MPa along with the increase of the magnesium content and the zinc content, the tensile strength can be increased to more than 280MPa, but the percentage and the range are well controlled, and the elongation can still be maintained to be more than 9%.

Preferably, the preparation method of the medium-strength high-toughness die-casting aluminum alloy material for the building aluminum template is characterized by comprising the following steps of: the method comprises the following steps:

the first step is as follows: adding a pure aluminum ingot into a smelting furnace, and heating the pure aluminum ingot to 850 ℃ through the smelting furnace until the pure aluminum ingot is completely melted;

the second step is that: adding an iron agent into a smelting furnace of a completely melted pure aluminum ingot, and controlling the temperature of aluminum liquid in the smelting furnace at 750-820 ℃;

the third step: after the iron agent in the smelting furnace is completely melted, controlling the temperature of the smelting furnace to be within the range of 720-740 ℃, and adding magnesium waste and waste zinc into the smelting furnace;

the fourth step: after the magnesium waste and the waste zinc in the smelting furnace are completely melted, controlling the temperature of the smelting furnace within the range of 670-;

the fifth step: stirring the molten aluminum in the smelting furnace, slagging off the smelting furnace, and carrying out component assay on the molten aluminum in the smelting furnace;

and a sixth step: and carrying out die casting process on the aluminum liquid, and carrying out die casting operation through a die casting machine.

Preferably, after the iron agent is completely melted, the temperature of the smelting furnace is reduced to 720-740 ℃.

Preferably, after the magnesium waste and the waste zinc in the smelting furnace are completely melted, the temperature of the smelting furnace is reduced to 670-710 ℃.

Preferably, the detection value of the component assay is within a required range, and the content of each metal is as follows: 1.0-2.0wt% of Fe, 4.6-6.5wt% of Mg, 0-4.5wt% of Zn, less than 1% of total impurities, less than 0.2% of single impurities and the balance of aluminum.

Preferably, in the die casting process, the temperature of the aluminum liquid is kept within the range of 670-710 ℃ for die casting, and an aluminum alloy standard (GB/T13822-2017) tensile test bar is selected as the die.

Preferably, the aluminum liquid die casting speed in the die casting process is as follows: second speed is 0.23-0.3 m/s; the third speed is 2.0-2.5 m/s.

In order to further understand and appreciate the technical solution of the present invention, several embodiments are listed for further detailed description.

Example 1

The raw material ratio is as follows: a00 aluminum ingot: 100kg, Fe: 1.6kg, Mg: 6kg, Zn: 0 kg.

The method comprises the following steps of cleaning the interior of a smelting furnace, removing residues on a furnace wall and a furnace bottom, adding 100kg of aluminum ingots into the smelting furnace, heating and raising the temperature by fixed power until the temperature in the smelting furnace rises to 850 ℃, and adding Fe into the smelting furnace after the aluminum ingots are completely melted: 1.6 kg; after the smelting furnace is completely melted, the interior of the smelting furnace is lowered and controlled at 730 ℃; adding Mg into the smelting furnace: 6kg, after the smelting furnace is completely melted, lowering the interior of the smelting furnace and controlling the temperature at 700 ℃; stirring molten aluminum in the smelting furnace, and slagging off the smelting furnace; through detecting the molten aluminum in the smelting furnace, the component detection result (wt%): fe1.69, Mg5.84 and Zn0.03, the total content of impurities is less than 1.0, and the balance is aluminum; then keeping the temperature of the aluminum liquid within the range of 670-; in this example, the amount of Zn added was 0kg, and it is understood from the data table in FIG. 4 that the values of the elongation exceeded 11%, the tensile strength exceeded 280MPa, and the yield strength exceeded 145 MPa.

Example 2

The raw material ratio is as follows: a00 aluminum ingot: 100kg, Fe: 1.6kg, Mg: 6kg, Zn: 1 kg.

The method comprises the following steps of cleaning the interior of a smelting furnace, removing residues on a furnace wall and a furnace bottom, adding 100kg of aluminum ingots into the smelting furnace, heating and raising the temperature by fixed power until the temperature in the smelting furnace rises to 850 ℃, and adding Fe into the smelting furnace after the aluminum ingots are completely melted: 1.6 kg; after the smelting furnace is completely melted, the interior of the smelting furnace is lowered and controlled at 730 ℃; adding Mg into the smelting furnace: 6kg, Zn: 1kg, after the smelting furnace is completely melted, lowering the interior of the smelting furnace and controlling the temperature at 700 ℃; stirring molten aluminum in the smelting furnace, and slagging off the smelting furnace; through detecting the molten aluminum in the smelting furnace, the component detection result (wt%): the total content of impurities of Fe1.65, Mg5.89 and Zn0.994 is less than 1.0, and the balance is aluminum; then keeping the temperature of the aluminum liquid within the range of 670-; in this example, the amount of Zn added was 1kg, and it is understood from the data table in FIG. 3 that the values of the elongation were more than 10%, the tensile strength was more than 285MPa, and the yield strength was more than 154 MPa.

Example 2 is different from example 1 in that the content of Zn is increased by 1kg, the tensile strength and yield strength of the alloy material are enhanced, and the elongation of the material is reduced.

Example 3

The raw material ratio is as follows: a00 aluminum ingot: 100kg, Fe: 1.6kg, Mg: 6kg, Zn: 2 kg.

The method comprises the following steps of cleaning the interior of a smelting furnace, removing residues on a furnace wall and a furnace bottom, adding 100kg of aluminum ingots into the smelting furnace, heating and raising the temperature by fixed power until the temperature in the smelting furnace rises to 850 ℃, and adding Fe into the smelting furnace after the aluminum ingots are completely melted: 1.6 kg; after the smelting furnace is completely melted, the interior of the smelting furnace is lowered and controlled at 730 ℃; adding Mg into the smelting furnace: 6kg, Zn: 2kg, after the smelting furnace is completely melted, lowering the interior of the smelting furnace and controlling the temperature at 700 ℃; stirring molten aluminum in the smelting furnace, and slagging off the smelting furnace; through detecting the molten aluminum in the smelting furnace, the component detection result (wt%): the total content of impurities of Fe1.48, Mg5.57 and Zn0.994 is less than 1.0, and the balance is aluminum; then the aluminum liquid temperature is kept within the range of 670-.

Example 3 is different from example 1 in that the content of Zn is increased by 2kg, the tensile strength and yield strength of the alloy material are increased remarkably, and the elongation of the material is reduced.

Example 4

The raw material ratio is as follows: a00 aluminum ingot: 100kg, Fe: 1.6kg, Mg: 6kg, Zn: 3 kg.

The method comprises the following steps of cleaning the interior of a smelting furnace, removing residues on a furnace wall and a furnace bottom, adding 100kg of aluminum ingots into the smelting furnace, heating and raising the temperature by fixed power until the temperature in the smelting furnace rises to 850 ℃, and adding Fe into the smelting furnace after the aluminum ingots are completely melted: 1.6 kg; after the smelting furnace is completely melted, the interior of the smelting furnace is lowered and controlled at 730 ℃; adding Mg into the smelting furnace: 6kg, Zn: 3kg, after the smelting furnace is completely melted, lowering the interior of the smelting furnace and controlling the temperature at 700 ℃; stirring molten aluminum in the smelting furnace, and slagging off the smelting furnace; through detecting the molten aluminum in the smelting furnace, the component detection result (wt%): the total content of impurities of Fe1.69, Mg5.84 and Zn3.04 is less than 1.0, and the balance is aluminum; then the temperature of the aluminum liquid is kept within the range of 670-.

Example 4 is different from example 1 in that the content of Zn is increased by 3kg, the tensile strength and yield strength of the alloy material are increased remarkably, and the elongation of the material is reduced.

The working principle is as follows: firstly, cleaning the interior of a smelting furnace, adding a pure aluminum ingot into the smelting furnace, heating the pure aluminum ingot to 850 ℃ through the smelting furnace until the pure aluminum ingot is completely melted, then adding an iron agent into the smelting furnace of the melted pure aluminum ingot, controlling the temperature of aluminum liquid in the smelting furnace to be 750-; stirring the internal aluminum liquid of the smelting furnace through stirring equipment, slagging off the smelting furnace, removing impurities in the internal aluminum liquid of the smelting furnace, extracting the internal aluminum liquid of the smelting furnace for component assay, detecting various numerical values of components, wherein the content of Fe is 1.0-2.0wt% in the range, the content of Mg is 4.6-6.5wt%, the content of Zn is 0-4.5wt%, the total content of impurities is less than 1%, the single amount is less than 0.2%, and when the balance is aluminum, guiding the aluminum liquid into a die casting machine, performing die casting process on the aluminum liquid, performing die casting work through the die casting machine, controlling the temperature of the aluminum liquid by 670 and 710 ℃ during die casting, and the die casting speed of the aluminum liquid: second speed is 0.23-0.3 m/s; the third speed is 2.0-2.5 m/s.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.