Aluminum Alloy Die Casting for Household Appliances

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a professional mold manufacturing enterprise mainly engaged in the design, development and manufacture of all kinds of difficult aluminum alloy die-casting molds, magnesium alloy die-casting molds, plastic molds, and mainly engaged in the production of aluminum alloy product die-casting molds And all kinds of aluminum alloy products die-casting machine processing. The company has a high-efficiency mold design team, CNC machining center, CNC engraving machine, and is equipped with CNC EDM and CNC wire cutting machine general processing equipment, which improves the quality of mold making and delivery time, and adopts CAD/CAM/CAE technology. Design, manufacture and process molds, with an annual production capacity of 12.5 million sets. At present, there are more than 10 cold chamber die casting machines of 200T-1250T models, and a total of 3 hot chamber die casting machines of 88T-168T models. Welcome to consult Custom Aluminum Die Castings at any time.

Product Description

Custom Aluminum Die Castings Basics

1. Implementation standards: The company strictly implements ISO9001 & TS 16949 certification.

2. Product material standards: ISO, GB, ASTM, SAE, ISO, EN, DIN, JIS, BS

3. Main processes: sand casting, silica sol investment casting, water glass investment casting,shell casting,deburring, sand blasting, machining, heat treatment, leak testing, surface treatment, etc.

4. Casting available materials:

Tin bronze, silicon bronze, aluminum bronze, brass, red copper, titanium alloy, high manganese steel, high chromium steel, high nickel steel, carbon steel, alloy steel, stainless steel, gray iron, cast iron, cast steel, cast aluminum, etc. Customized according to customer requirements.

Available materials for die casting:

Aluminum alloy materials in aluminum alloy die castings are mainly divided into three materials: aluminum-silicon alloy, aluminum-silicon-copper alloy, and aluminum-magnesium alloy:

Aluminum-silicon alloy: mainly includes YL102 (ADC1, A413.0, etc.), YL104 (ADC3, A360);

Aluminum-silicon-copper alloy: mainly includes YL112 (A380, ADC10, etc.), YL113 (3830), YL117 (B390, ADC14) ADC12, etc.;

Aluminum-magnesium alloy: mainly includes 302 (5180, ADC5,) ADC6, etc.

Process Characteristics

High-pressure and high-speed filling of die-cast aluminum molds are the two major characteristics of die-cast aluminum. Its commonly used injection pressure is from thousands to tens of thousands of kPa, or even as high as 2 × 105kPa. The filling speed is about 10~50m/s, and sometimes even more than 100m/s. The filling time is very short, generally in the range of 0.01~0.2s.

Custom Aluminum Die Castings Advantages:

1. Good product quality: high dimensional accuracy of castings, generally equivalent to grade 6~7, or even up to grade 4; good surface finish, generally equivalent to grade 5~8; high strength and hardness, and the strength is generally 25 higher than that of sand casting. ~30%, but the elongation is reduced by about 70%; the dimensions are stable and the interchangeability is good; it can die-cast aluminum thin-walled and complex castings. For example, the minimum wall thickness of our company's current zinc alloy die-casting aluminum parts can reach 0.3mm; aluminum alloy castings can reach 0.5mm; the minimum casting hole diameter is 0.7mm; the minimum thread pitch is 0.75mm.

2. High production efficiency: high machine productivity, for example, domestic JIII3 horizontal cold air die-casting aluminum machine can die-cast aluminum 600-700 times on average in eight hours, and small hot-chamber die-casting aluminum machine can die-cast aluminum 3000-7000 times on average every eight hours; Die-casting aluminum molds have a long service life. One pair of die-casting aluminum molds and die-casting aluminum bell alloys have a lifespan of hundreds of thousands or even millions of times; it is easy to realize mechanization and automation.

3. Excellent economic effect: due to the precise size of die-casting aluminum parts, the surface is smooth and clean. Generally, it is not used directly without mechanical processing, or the processing volume is very small, so it not only improves the metal utilization rate, but also reduces a large number of processing equipment and man-hours; castings are cheap; combined die-casting aluminum can be used to make other metal or non-metallic materials. . Saves both assembly man-hours and metal.

Custom Aluminum Die Castings Shortcoming

1. Due to the high speed of liquid metal filling the cavity and the unstable flow state during die-casting aluminum, the general die-casting aluminum method is used, and the casting is prone to pores and cannot be heat treated;

2. For complex concave castings, die-casting aluminum is more difficult

3. High melting point alloys (such as copper, ferrous metals), the life of die-casting aluminum is low;

4. It is not suitable for small batch production. The main reason is that the manufacturing cost of die-casting aluminum molds is high, the production efficiency of die-casting aluminum machines is high, and small-batch production is uneconomical.

Product Performance

Aluminum alloy die castings have some advantages that other castings cannot match, such as beautiful appearance, light weight, corrosion resistance and other advantages, which make them widely favored by users, especially since the lightweight of automobiles, aluminum alloy castings have been widely used in the automobile industry. Applications.

The density of aluminum alloy die castings is lower than that of cast iron and cast steel, while the specific strength is higher. Therefore, the use of aluminum alloy castings under the same load conditions can reduce the weight of the structure. Therefore, aluminum alloy castings are widely used in the aviation industry, power machinery and transportation machinery manufacturing. Aluminum alloy has good surface gloss and good corrosion resistance in the atmosphere and fresh water, so it has a wide range of uses in the manufacture of civil utensils. Pure aluminum has good corrosion resistance in oxidizing acid media such as nitric acid and acetic acid, so aluminum castings also have certain uses in the chemical industry. Pure aluminum and aluminum alloys have good thermal conductivity, heat exchange devices used in chemical production, and parts that require good thermal conductivity in power machinery, such as cylinder heads and pistons of internal combustion engines, are also suitable for aluminum alloys. manufacture.

Aluminum alloy die castings have good casting properties. Due to the low melting point (the melting point of pure aluminum is 660.230C, and the pouring temperature of aluminum alloy is generally about 730-750oC), casting methods such as metal mold and pressure casting can be widely used to improve the inherent quality, dimensional accuracy and surface of the casting. finish and productivity. Due to the large latent heat of solidification of aluminum alloy, under the same weight conditions, the solidification process of aluminum liquid lasts much longer than that of cast steel and cast iron, and the fluidity is good, which is conducive to casting thin-walled and complex castings.

Alloy aluminum casting has many advantages, making it one of the most popular casting products in the development direction of the foundry industry and purchasing customers. In the future, with the progress of aluminum alloy casting technology, it will show its style on a larger stage. .

Post Casting Process

1. Heat treatment: annealing, carbonization, tempering, quenching, normalizing, surface tempering

2. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

3. Surface treatment: powder spraying, chrome plating, painting, sandblasting, nickel plating, galvanizing, blackening, polishing, bluing, etc.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam).

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements

3. Testing equipment: flaw detection, spectrum analyzer, golden image analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine;

4. Provide after-sales service.

5. The quality can be traced back.

Application

Aluminum alloy die casting covers household kitchen utensils, electrical appliances, lighting accessories, hardware, telecommunications, office furniture, power tools, sports equipment, medical accessories, mechanical transmission, and automotive industries. with patents.

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