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Food-grade environment-friendly aluminum ingot and preparation method thereof

A food-grade, environmentally friendly technology, applied in the field of food-grade environmentally friendly aluminum ingots and its preparation, can solve the problem that hardware kitchen utensils cannot meet the requirements of environmentally friendly food grade

Inactive Publication Date: 2021-04-09
顺博合金江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, hardware kitchen utensils produced simply by using scrap aluminum can no longer meet the environmental food-grade requirements. Due to the particularity of materials in the recycled aluminum industry, there is an urgent need to meet the requirements of food-grade environmental protection materials. Suitable for large-scale die-casting production

Method used

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  • Food-grade environment-friendly aluminum ingot and preparation method thereof
  • Food-grade environment-friendly aluminum ingot and preparation method thereof
  • Food-grade environment-friendly aluminum ingot and preparation method thereof

Examples

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preparation example Construction

[0076] The preparation method of the food-grade environment-friendly aluminum ingot, the steps of the method include:

[0077] Prepare materials according to the components of the mixed aluminum scrap and the mass percentage of each component;

[0078] Put 40% to 50% of the raw material into the melting furnace until it is completely melted;

[0079] Add the remaining materials to the smelting furnace for smelting until completely melted;

[0080] perform a refinement;

[0081] Alloying the molten aluminum after primary refining;

[0082] Sampling and analyzing the chemical composition of the molten aluminum after alloying treatment, and adjusting its chemical composition;

[0083] Secondary refining of the adjusted molten aluminum;

[0084] The molten aluminum after secondary refining is used for casting, and then cooled to obtain food-grade environmentally friendly aluminum ingots.

[0085] Further, the parameters of a refinement are as follows:

[0086] Refining tempe...

Embodiment 1

[0099] A food-grade environmentally friendly aluminum ingot, which is obtained by alloying and refining mixed aluminum scrap, the components of the mixed aluminum scrap and the mass percentages of each component are as follows:

[0100] The first aluminum scrap: 25%;

[0101] The second waste aluminum material: 25%;

[0102] The third waste aluminum material: 25%;

[0103] The fourth waste aluminum material: 5%;

[0104] The fifth waste aluminum material: 20%; of which,

[0105] The chemical composition of the first waste aluminum material and the mass percentage of each chemical composition are as follows:

[0106] Si: 1.2%; Cu: 0.08%; Mg: 0.08%; Mn: 0.25%; Zn: 0.08%; Fe: 0.45%, the rest is aluminum and unavoidable impurities, totaling 100%;

[0107] The chemical composition of the second scrap aluminum material and the mass percent of each chemical composition are as follows:

[0108] Si: 3.5%; Cu: 0.25%; Mg: 0.1%; Mn: 1%; Zn: 0.25%; Fe: 0.45%, the rest is aluminum and ...

Embodiment 2

[0139] A food-grade environmentally friendly aluminum ingot, which is obtained by alloying and refining mixed aluminum scrap, the components of the mixed aluminum scrap and the mass percentages of each component are as follows:

[0140] The first aluminum scrap: 20%;

[0141] The second waste aluminum material: 25%;

[0142] The third waste aluminum material: 25%;

[0143] The fourth waste aluminum material: 5%;

[0144] The fifth waste aluminum material: 25%; of which,

[0145] The chemical composition of the first waste aluminum material and the mass percentage of each chemical composition are as follows:

[0146] Si: 1.3%; Cu: 0.5%; Mg: 0.1%; Mn: 0.3%; Zn: 0.4%; Fe: 0.5%, the rest is aluminum and unavoidable impurities, totaling 100%

[0147] The chemical composition of the second scrap aluminum material and the mass percent of each chemical composition are as follows:

[0148] Si: 3%; Cu: 0.3%; Mg: 1%; Mn: 1%; Zn: 0.3%; Fe: 0.6%, the rest is aluminum and unavoidable i...

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Abstract

The invention discloses a food-grade environment-friendly aluminum ingot and a preparation method thereof. The food-grade environment-friendly aluminum ingot is obtained through alloying and refining of a mixed waste aluminum material; the mixed waste aluminum material is prepared from the components including, by mass, 10%-25% of a first waste aluminum material, 10%-25% of a second waste aluminum material, 10%-25% of a third waste aluminum material, 1%-5% of a fourth waste aluminum material and 10%-25% of a fifth waste aluminum material, and the total percentage of the components is 100%; the first waste aluminum material is prepared from the chemical components including, by mass, less than or equal to 1.5% of Si, less than or equal to 0.1% of Cu, less than or equal to 0.1% of Mg, less than or equal to 0.3% of Mn, less than or equal to 0.1% of Zn, less than or equal to 0.5% of Fe and the balance aluminum and inevitable impurities, and the total percentage of the chemical components is 100%; the second waste aluminum material is prepared from the chemical components including, by mass, less than or equal to 4.0% of Si, less than or equal to 0.3% of Cu, less than or equal to 0.1% of Mg, more than 0.3% but less than or equal to 1.2% of Mn, less than or equal to 0.3% of Zn, less than or equal to 0.6% of Fe and the balance aluminum and inevitable impurities, and the total percentage of the chemical components is 100%. According to the aluminum ingot, the high thermal conductivity of the material is met, meanwhile, the environment-friendly food-grade requirement is met, and the large-scale die-casting performance is met.

Description

technical field [0001] The invention relates to a food-grade environment-friendly aluminum ingot and a preparation method thereof. Background technique [0002] At present, with the development of the times and the improvement of people's material requirements, various living materials that meet the requirements of physical health are increasing day by day. All countries in the world are actively promulgating relevant standards for food safety. The EU's ROHS, Reach standards, American UL standards, German VDE standards, Japanese JIS standards, etc., are all regulating in this direction. At present, hardware kitchen utensils produced simply by using scrap aluminum can no longer meet the environmental food-grade requirements. Due to the particularity of materials in the recycled aluminum industry, there is an urgent need to meet the requirements of food-grade environmental protection materials. It is suitable for large-scale die-casting production. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/03C22C21/08C22C21/14C22C21/16C22C21/18
CPCC22C1/026C22C1/03C22C21/02C22C21/08C22C21/14C22C21/16C22C21/18
Inventor 张松彬李陆军陈泰山周杨
Owner 顺博合金江苏有限公司