Aluminum alloys have been widely used in lighting fixtures, solar reflectors, building exteriors, interiors, furniture, cabinets, elevators, signs, nameplates, luggage, automotive interior and exterior decoration, household appliances, aerospace aircraft manufacturing, and military applications. The choice of air molds, foam molding molds, reactive injection molding (RIM) molds, and complete aluminum alloy mold materials. Luo Baihui, secretary-general of the International Association for Modeling, believes that aluminum alloys will increasingly be used in automotive parts. This is the focus of the entire automotive industry to improve production through mold technology.

Aluminum alloy classification introduction:

1XXX series industrial pure aluminum plate 2XXX series Al-Cu, Al-Cu-Mn alloy,;

3XXX series Al-Mn alloy 4XXX series Al-Si alloy;

5XXX series Al-Mg alloy;

6XXX series Al-Mg-Si alloys;

7XXX series Al-Mg-Si-Cu alloy;

8XXX series other.

1-8 series aluminum use introduction:

1××× series aluminum sheet: stands for 1050, 1060, 1100. In all series, the 1××× series belongs to one series with the most aluminum content. The purity can reach more than 99.00%. Because it does not contain other technical elements, the production process is relatively simple and the price is relatively cheap. It is the most commonly used series in the current industry. Most of the current circulation in the market is the 1050 and 1060 series. The 1000 series aluminum plate determines the minimum aluminum content of this series according to the last two Arabic numerals. For example, the last two digits of the 1050 series are 50. According to the international trademark nomenclature, the aluminum content must be above 99.5% and it is a qualified product. China's aluminum alloy technical standard (gB/T3880-2006) also clearly stipulates that 1050 aluminum content reaches 99.5%. The same reason, the aluminum content of the 1060 series aluminum plate must reach more than 99.6%.

2 × × × series aluminum plate: represents 2A16 (LY16), 2A06 (LY6). The characteristics of the 2××× series aluminum plates are higher hardness, among which the copper content is the highest, about 3-5%. The 2××× series of aluminum panels belong to aeronautical aluminum and are not commonly used in conventional industries. There are fewer manufacturers currently producing 2××× series aluminum plates in China. The quality can not be compared with foreign countries. Currently imported aluminum sheet is mainly provided by Korean and German production companies. With the development of China’s aerospace industry, the 2××× series aluminum sheet production technology will be further improved.

3 × × × series aluminum sheet: on behalf of 3003,3004,3A21-based. It can also be called rust-proof aluminum plate. China's 3XXX series aluminum plate production process is excellent. The 3××× series aluminum plates are mainly composed of manganese, and the content is between 1.0-1.5%. Is a series of better anti-rust function. Routinely used in air conditioners, refrigerators, vehicle bottoms and other humid environments, the price is higher than 1 × × × series, is a more commonly used alloy series.

4××× series aluminum plates: The aluminum plates represented by the 4A01.4××× series belong to the series with high silicon content. Usually the silicon content is between 4.5-6.0%. Belong to building materials, mechanical parts, forging materials, welding materials; low melting point, good corrosion resistance. Product Description: With heat-resistant, wear-resistant characteristics.

5 × × × series aluminum plate: stands for 5052, 5005, 5083, 5A05 series. The 5××× series aluminum plates belong to the more commonly used alloy aluminum plate series, and the main element is magnesium, which contains between 3-5% of magnesium. It can also be called aluminum-magnesium alloy. The main features are low density, high tensile strength, and high elongation. The weight of aluminum-magnesium alloys in the same area is lower than in other series. Therefore, it is commonly used in aviation, such as aircraft fuel tanks. It is also widely used in the conventional industry. The processing technology is continuous casting and rolling, which belongs to the hot rolled aluminum sheet series and can be used for deep oxidation processing. In China, the 5××× series aluminum sheet is one of the more mature aluminum sheet series.

6 × × × series aluminum plate: stands for 6061. Mainly contains two elements of magnesium and silicon, so the advantages of the 4×××series and the 5×××series are concentrated. 6061 is a cold-forged aluminum forging product, which is suitable for applications requiring high corrosion resistance and high oxidability. Good usability, excellent interface features, easy coating, and good processability. Can be used on low pressure weapons and aircraft joints.

7××× series aluminum sheet: stands for 7075. It mainly contains zinc. Also belongs to the aviation series, is aluminum magnesium and zinc copper alloys, heat treatable alloys, are superhard aluminum alloy, have good wear resistance. 7075 aluminum plate is relieved of stress, will not be deformed, warped after processing. All ultra-thick ultra-thick 7075 aluminum plates are all ultrasonically probed to ensure no blisters or impurities. The high thermal conductivity of the 7075 aluminum plate can shorten the molding time and improve work efficiency. The main feature is the high hardness 7075 is a high hardness, high strength aluminum alloy, commonly used in the manufacture of aircraft.

8 × × × series aluminum plate: 8011 aluminum plate is more commonly used, belonging to other series. The main function of the aluminum plate is to do the cap, but also in the radiator, most of the application is aluminum foil. It is less commonly used in business.

Recently, David Okonski, general manager of R&D Engineering at General Motors, also said at the Plastics Engineers Association meeting that the company will use aluminum to make injection molds.

Ford Motor Company has also previously announced the use of aluminum for mold production. Other car manufacturers are also developing automotive aluminum parts production.

It is estimated that 135 out of the 450 plastic parts of a car can be manufactured using aluminum alloy molds. However, car makers still remain very cautious. Because at present, aluminum alloy molds can not reach the standard of traditional automotive molds. This is also the reason why many mold manufacturers plan to carry out long-term R&D projects.

The Mitsubishi Group Light Metals Division has developed and produced DMS5 products with the same strength as ADC12. Due to the market's demand for materials with higher thermal conductivity, it is most suitable for the replacement of ADC12. At the same time have the following major advantages:

1, has a higher high thermal conductivity, can reduce the size of the heat sink.

2. No need to change the flesh thickness, the empty shape of the nut, and save the trouble caused by the design change. 3. The corrosion loss is about 1/5 of the ADC12, so no special anti-corrosion measures are needed.

4, the optimal thermal conductivity is about 1.6 times the AC12 5, DMS1 thermal conductivity (W/m °C) 210

6, DMS3 thermal conductivity (W/m°C)150

7, DMS4 thermal conductivity (W/m °C) 190

8, DMS5 thermal conductivity (W/m°C) 150

ALCOA's high-strength aluminum alloy formwork QC-7, because its processing performance allows the cutting speed to increase to 40% over steel, can significantly shorten the production time and increase the production efficiency; its good weldability makes it easier and quicker to make Minor mold design modification and processing error repair, reduce mold manufacturing, maintenance costs; QC-7 hardness makes polishing easier and more quickly to achieve the mirror effect, the smooth surface after processing to reduce the polishing time, each pair of mold The required human resources can be reduced to the minimum; its lighter weight is easier to transport and handle, and its stability can reduce the wear of the machinery. The heat generated by machining has been mostly distributed on the aluminum chips, so the cutting can maintain sharpness for a long time. Mechanical maintenance and downtime are also reduced accordingly, saving on miscellaneous expenses.

According to Luo Baihui, the thermal conductivity of QC-7 is four times that of steel. High thermal conductivity is more effective than steel for heating and cooling. Using QC-7 can reduce energy consumption, reduce the production cycle by 25%, and increase the hourly output. Production volume and reduction of returns ultimately reduce production costs. At the same time can also improve the quality of the product. Because using QC-7 can reduce the internal stress caused by the "hot zone". Mold steel QC-7 is about room temperature when it is demolded, and there is less distortion, distortion and shrinkage of the product. The strength of QC-7 die aluminum plate is 54% higher than 7075, 87% higher than that of 6061 aluminum alloy. Its high strength and hardness can prolong the life of the die. The QC-7 template has a uniform hardness from the surface to the center, omitting the problems of adhesion and deformation on the parting line. The QC-7 can tolerate small-scale mold design to produce some deeper products that are suitable for injection molds, blow molds, foam molding molds, reactive injection molding (RIM) molds, and complete aluminum alloy molds.