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お電話ください +86 -755-25432352
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私達に電子メールを送り info@urbanmines.com
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Come & visit us Block A, FuHai Technopark, HuaFeng Smart Valley, YongFu Rd, BaoAn,Shenzhen,China
お電話ください +86 -755-25432352
私達に電子メールを送り info@urbanmines.com
Come & visit us Block A, FuHai Technopark, HuaFeng Smart Valley, YongFu Rd, BaoAn,Shenzhen,China
Raw aluminum
Raw aluminum, also known as stir-fried aluminum in the Chinese industry, is a low-purity aluminum extracted from a naturally refined chemical component, aluminum oxide. Raw aluminum is impure aluminum, and like pig iron, it will break if you hit it hard. Aluminum with a composition below 98% is brittle and hard, and can only be used for sand casting.
Die-cast aluminum
Aluminum suitable for die casting is die-cast aluminum, usually die-cast aluminum alloy. Through the die-casting process, the aluminum alloy is melted and injected into the mold, and then quickly cooled to form an aluminum alloy product.
About Raw aluminum
The difference with wrought aluminum: Common aluminum products are light and thin, this is wrought aluminum. Wrought aluminum is more than 98% aluminum, soft in nature, and can be rolled or stamped into a variety of utensils.
The difference with aluminum alloy: Aluminum alloy is made by smelting pure aluminum with a small amount of magnesium, manganese, copper, and other metals. Its corrosion resistance and hardness are greatly improved. Raw aluminum is one of the raw materials for aluminum alloy production.
The application of raw aluminum: Suitable for high-demand seals, mechanical parts, automotive brake systems, and other fields.
The property: It has high heat resistance and strength.
The production process: It is usually obtained by smelting aluminum ore from mines. Raw aluminum needs to go through smelting, purification, cooling, and other processes, generally using wooden sand molds and gravity casting.
The appearance: The surface is typically granular, with a relatively high surface roughness, and appears to be relatively rough;
At the beginning of its establishment, UrbanMines Tech. Limited was involved in the recycling of copper and rare metal waste. In recent years, with the increase in China's domestic demand for aluminum resources and the development of the company, it has begun to involve the recycling of raw aluminum waste to implement the company's metal resource industry green closed-loop development concept. Our company recycles raw aluminum blocks and fragments, and its composition requirements are: copper content of 1.5 ~ 2%; silicon content: of 9 ~ 10%; magnesium content: of less than 0.5%; zinc content: of about 1%; iron content: of about %; others: aluminum;
About Die-cast aluminum
Features: Smooth and delicate surface, high-grade feel, high strength and toughness, uniform density, stable size, flat surface, etc.
Application: Suitable for making accessories such as casings, fuselages, and structural parts, and widely used in machinery, electronics, automobiles, and other fields.
Disadvantage: High cost and relatively narrow scope of application.
Production process: Die-casting aluminum uses a metal mold and a die-casting machine for pressure casting, and there is a pressure-maintaining process in the mold. It requires processes such as melting, injection into the mold, and rapid cooling.
When UrbanMines Tech. Limited was first established, it was involved in the recycling of copper and rare metal waste. In recent years, with the increase in demand for aluminum resources in China, the company has grown and expanded and has begun to involve the recycling of die-cast aluminum waste to implement the company's green closed-loop development concept of the metal resource industry. Our company recycles raw aluminum blocks and fragments. The composition requirements and recycling standards are as follows:
| Test Item | Reference Value Index | |
| External quality | A piece of equipment, a piece of equipment that is mixed in with the gun | |
| Size specifications, mm | 15–150 | |
| Content of substances(%) | ≤1 | |
| Content of volatile substances | The ratio of the quality of the powder material is ≤0.5%, and the ratio of the quality of the powder material is <0.1% when the particle size of the powder is ≤2mm. | |
| Aluminum and aluminum alloy content(%) | ≥98 | |
| Total metal content(%) | ≥99.3 | |
| Metal recovery rate(%) | ≥95 | |
| Chemical composition(%) | S | ≤15 |
| Fe | ≤2.0 | |
| Cu | ≤4.0 | |
| Mn | ≤1.0 | |
| Mg | ≤2.0 | |
| Ni | ≤0.50 | |
| Cr | ≤0.20 | |
| Zinc | ≤7.0 | |
| Ti | ≤0.15 | |
| Pb | ≤0.20 | |
| Sn | ≤0.10 | |
| Other | ≤0.15/piece | |
| Al | Surplus | |
| Radioactive contamination | a) Non-mixed radioactive materials; | |
| b) Raw material external irradiation rate ≤ location normal natural radiation base + 0.25μGy/h; | ||
| c) surface capacity partial 300cm² maximum horizontal average a≤0.04Bq/cm², β≤0.4Bq/cm²; | ||
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