Aluminum Magnesium Alloy Hot Forgings

Compared with the rolling of magnesium and magnesium alloy sheets and strips, the blank forging of their parts has obvious advantages. After a little cutting of the forging blank, it becomes a part that can be installed. When the grain orientation of aluminum magnesium alloy hot forgings is consistent with the main load, its strength and performance are quite high, and good use results can be obtained. Automobile wheels are its typical products; magnesium alloy forgings have dense structure, no pores and excellent performance, and can be used for Fields with strict air tightness requirements.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is an enterprise specializing in forging, processing and production of forgings. Products can be produced according to drawings and chemical compositions, and the integration of free forging, die forging, rough machining, heat treatment and finishing is completed. Long-term cooperation with crane, petroleum, chemical, mining, metallurgy, hydraulic, coking, train, construction machinery and other enterprises.

Product Dsecription

1. Implementation standards: the company strictly implements ISO9001, ISO14001, IATF16949 certification

The products have passed the certification of ROHS, FDA EU, etc.

2. Product material standards: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Main process: cold forging, hot forging, free forging, fetal membrane forging, die forging and special die forging. And has die casting process, investment casting, shell casting, deburring, sand blasting, machining, heat treatment, leak testing, surface treatment, etc.

4. Aluminum magnesium alloy hot forgings Available materials:

Copper, titanium alloy, high manganese steel, high chromium steel, high nickel steel, carbon steel, aluminum alloy, alloy steel, stainless steel, gray iron, cast iron, cast steel, etc. are customized according to customer requirements.

Product Features

1. Forging characteristics

The forming technology of magnesium alloy is basically the same as that of aluminum alloy, but it also has the following characteristics:

●It has a large friction coefficient at high temperature, low fluidity and high adhesion, and it is difficult to fill deep vertical blind holes. Therefore, the radius of inner and outer corners and the thickness of ribs of the forging die are larger than those of aluminum alloys;

●In most cases, magnesium alloy forging billets are extruded bars, which can be homogenized before extrusion to reduce the anisotropy of mechanical properties of forgings;

●For forging magnesium alloys, not only should the temperature of the workpiece be strictly controlled, but also the temperature of the mold should be controlled, otherwise the workpiece and the mold at room temperature will cause surface cracks due to chilling;

●The forging properties of magnesium alloys are very sensitive to the deformation speed, and their plasticity decreases significantly with the increase of the deformation speed. Therefore, forgings with complex shapes need to be formed by multiple fires, and the forging temperature should be lowered successively to avoid grain growth.

2. Forgeability

Not all wrought magnesium alloys can be made into forgings.

Generally, the forging temperature of magnesium alloys is about 55°C below the solidus, and the die temperature is 30°C to 40°C lower than the forging temperature. Due to the low forging temperature of magnesium alloys, it can be manufactured with low alloyed die steels. The forging pressure required for different materials to be compressed by 10% at the corresponding forging temperature is shown in Table 2. It can be seen from the listed data: the forging pressure of AZ31B magnesium alloy is larger than that of carbon steel, alloy structural steel, and aluminum alloy, but smaller than that of stainless steel. Therefore, magnesium alloy forgings need to be forged for many times, but the shape of forgings can still be forged. For example, helicopter forging rings and racing wheels, this forging not only has better mechanical properties than aluminum alloys, but also is 35% lighter than aluminum alloy wheels.

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.