Magnesium Alloy Vacuum Drying Machine

I. Product Core Positioning

This magnesium alloy vacuum drying machine is a low-oxygen and low-temperature drying equipment specially designed for magnesium alloy powders, castings, profiles, etc., which are prone to oxidation, flammability and explosion, and sensitive to high temperatures. The equipment uses a vacuum environment to isolate oxygen, combined with precise temperature control and efficient stirring systems, to ensure production safety and achieve rapid dehydration of the materials, while retaining the original physical and chemical properties of magnesium alloys to the greatest extent. It is widely applicable in precision processing of magnesium alloys in aerospace, automotive parts, electronic components, etc.

II. Working Principle

Based on the physical principle that "lower pressure leads to lower boiling point of liquids", through three core links, the magnesium alloy can be safely dried:

Vacuum environment construction: Start the dedicated vacuum pump to extract the air and non-condensable gases in the drying chamber, forming a stable negative pressure environment. The vacuum degree of the chamber can be as low as -0.1 MPa, effectively isolating oxygen, and eliminating the risk of oxidation and explosion of magnesium alloy from the source.

Low-temperature precise heating: Provide heat energy through jacket heating or heat plate conduction, taking advantage of the significant reduction in water boiling point in a vacuum environment, moisture can be rapidly vaporized within the 40-80℃ low-temperature range. Compared with traditional hot air drying, it avoids the damage to magnesium alloy properties caused by high temperature.

Efficient steam discharge: The evaporated water vapor is rapidly condensed by the condenser and collected for discharge. At the same time, the vacuum pump continuously removes non-condensable gases to maintain the stable vacuum degree of the chamber, ensuring the continuous and efficient drying process without moisture residue or secondary pollution.

III. Core Product Advantages

1. Safe and explosion-proof, oxygen isolation

The fully sealed vacuum chamber design reduces the oxygen content in the chamber to below the safe range, fundamentally solving the oxidation and color change, and explosion risks during the drying process of magnesium alloy materials; the chamber is made of 304/316L stainless steel, corrosion-resistant and impact-resistant, and is equipped with anti-blast tempered glass windows, allowing for real-time observation of the drying process, balancing safety and visibility.

2. Low-temperature protection, quality control

The low-temperature drying process can precisely control the temperature within the range of 35-150℃, avoiding the crystal grain growth and mechanical performance decline of magnesium alloy due to high temperature, and the finished product moisture content can be controlled below 0.1%. The material purity and stability are significantly better than traditional drying equipment, with an active component retention rate of over 98%.

3. High-efficiency energy saving, cost reduction

The evaporation rate of moisture in a vacuum environment is 30%-50% faster than in normal pressure drying; the energy consumption per ton of material drying is 20%-30% lower than that of traditional equipment; a solvent recovery system is equipped to recover the volatile organic solvents during drying, reducing material loss and environmental protection treatment costs, and significantly reducing production costs over the long term.

4. Intelligent control, wide applicability

The PLC + touch screen control system can precisely adjust the vacuum degree, temperature, stirring speed, drying time, etc., supporting automated continuous production; an auger stirrer structure is built-in, allowing magnesium alloy materials to be uniformly heated, avoiding agglomeration and local overheating, suitable for drying of various forms of magnesium alloy materials such as powders, particles, castings, etc.

5. Compact structure, convenient maintenance

The conical bottom design facilitates complete material discharge without residue; the stirrer auger can be disassembled and cleaned, the chamber has no weld seam design to reduce cleaning dead corners, meeting GMP and industrial environmental protection standards; the equipment bottom is equipped with universal wheels, facilitating movement and installation, with low daily maintenance costs and a service life of 8-10 years.

IV. Key Technical Parameters

Parameter Name

Specification Model (MG-ZK-600)

Specification Model (MG-ZK-800)

Inner Diameter of Drying Chamber (mm)

φ600×976

φ800×1247 Overall dimensions (mm)

1135×810×1020

1700×1045×1335

Number of drying racks / Number of drying trays

4 layers / 4 trays

4 layers / 8 trays

Drying tray size (mm)

310×600×45

520×410×45

Temperature control range (℃)

35-150 (accuracy ±0.1℃)

35-150 (accuracy ±0.1℃)

Vacuum degree under no load (MPa)

≤-0.1

≤-0.1 Heating method

Jacketed heating / Heat plate conduction

Jacketed heating / Heat plate conduction

Vacuum pump power (kW)

2.0 (with condenser) / 1.5 (without condenser)

3.0 (with condenser) / 2.2 (without condenser)

Stirring speed (r/min)

0-30 (stepless adjustable)

0-30 (stepless adjustable)

Equipment weight (kg) 250

600

Applicable moisture content of materials

≤20% (for input), ≤0.1% (for output)

≤20% (for input), ≤0.1% (for output)

Note: The above parameters are for the standard model configuration. Customized design services can be provided based on customer production capacity and material characteristics.

V. Applicable Scenarios

This equipment is specifically designed for drying magnesium alloy materials, and can also be adapted for other oxidizable and heat-sensitive metal materials. Specific application scenarios include:

Magnesium alloy powder: drying and moisture-proof storage pre-treatment of magnesium powder, magnesium-aluminum alloy powder, magnesium-based composite material powder, etc.;

Magnesium alloy castings: cleaning and dehydration drying of magnesium alloy castings such as automotive wheels, aerospace components, etc.;

Magnesium alloy profiles: removal of surface moisture and crystalline water from magnesium alloy sheets, tubes, and special profiles;

Other materials: magnesium powder, titanium powder, etc. for easily oxidizable metal powders, lithium battery positive and negative electrode materials, nanomaterials, etc. for low-oxygen drying scenarios.

VI. Operation and Safety Specifications

1. Operating Procedures

Input: Use the vacuum input system to send wet magnesium alloy materials into the drying chamber to avoid air mixing;

Vacuuming: Start the vacuum pump to reduce the chamber pressure to the preset value, maintaining a stable negative pressure environment;

Heating and stirring: Turn on the heating system and stirring device, adjust the temperature and stirring speed according to the preset parameters, and start the drying process;

Drying Monitoring: Observe the material status through the window and control system in real time, record temperature and vacuum degree changes;

Output: After drying is completed, turn off the heating and vacuum systems, wait for the chamber pressure to return to normal pressure, and unload the material through the conical bottom discharge valve.

2. Safety Precautions

Before starting the equipment, check the sealing of the vacuum system. Do not start the heating function under an air-leakage state;

When feeding materials, ensure that there are no flammable or explosive impurities in the materials and avoid intense friction with the chamber metal components to prevent sparks from being generated;

Regularly maintain the vacuum pump and condenser to ensure normal heat dissipation and drainage, and avoid overloading the equipment operation;

Operators must wear protective gloves and goggles, and严禁opening the chamber door during equipment operation. 

This equipment can be designed, developed and manufactured according to different product specifications and production capacity.