3D Printing Sintering Furnace

The 3D printing sintering furnace is a device specifically used for 3D printing metal or ceramic parts. Through high-temperature sintering, it sinters 3D printed powders or binder-formed materials into dense finished products. This equipment is widely used in metal additive manufacturing, ceramic processing, and the production of other high-performance materials.

 Product Overview:

Application range of 3D high-vacuum annealing furnace: annealing of ceramics, metallurgy, electronics, glass, chemical industry, machinery, refractory materials, special materials, building materials. It is used by universities, research institutes, and industrial and mining enterprises for powder roasting, ceramic sintering, high-temperature experiments, material processing, and for applications such as vacuum brazing, vacuum sintering, vacuum degreasing, and vacuum annealing in industrial and mining enterprises. Materials used: imported tungsten filament lamps, high-purity alumina fibers, vacuum-formed fiber light board materials. Equipment features: uniform temperature field, low surface temperature, fast heating and cooling rate, energy-saving, etc.

 Product Features:

High-temperature capacity: It can usually be heated to 1200°C to 1600°C (or higher) to meet the sintering requirements of metal, ceramic, and alloy materials.
Atmosphere control: It can operate in a vacuum, inert gas (such as argon, nitrogen), or reducing atmosphere (such as hydrogen) to prevent materials from being oxidized at high temperatures.
Precise temperature control: A multi-stage temperature control system is adopted to precisely control the temperature rise and fall process and ensure the uniform sintering of materials.
Uniform heating: The heating elements and thermal field control are designed to ensure the uniform temperature in the furnace chamber and avoid internal stress in materials caused by temperature differences.
Rapid cooling system: Some 3D printing sintering furnaces are equipped with a rapid cooling system, which can shorten the processing cycle and improve production efficiency.

 Purchase Information:

If you are interested in our 3D printing sintering furnace, please feel free to contact us for more information and a quotation.
Contact number: +86 18516380382
Email: Jimmy@cysitech.com
Contact person: Jimmy Hao
WeChat: +86 18516380382  

Technical Parameters: 

Main Components: 

Application Areas:
Metal 3D Printing: Used for the post-processing of 3D printed metal parts. Through sintering, the density and mechanical properties of metal materials are improved. It is applicable to materials such as stainless steel, cobalt-chromium alloy, and titanium alloy.
Ceramic 3D Printing: Used for sintering 3D printed ceramic components, such as alumina, zirconia, and silicon nitride. Through high-temperature sintering, the ceramic materials reach the required hardness and density.
Metal Injection Molding (MIM): After metal injection molding, the molded parts are subjected to high-temperature sintering to improve their strength and density.
Functional Material Processing: The 3D printing sintering furnace is also used for sintering special functional materials such as superalloys and magnetic materials.

 Application Cases 《Process Steps of Using 3D Printing Sintering Furnace》

1. Prepare printed parts: Clean the 3D printed metal or ceramic parts to ensure that there are no impurities on the surface, so as to avoid pollution during the sintering process.

2. Load onto the sintering tray: Place the 3D printed parts on the sintering tray and ensure that there is an appropriate gap between the parts for uniform heating.

3. Atmosphere control: Select an appropriate atmosphere (such as hydrogen, argon, or vacuum) to prevent materials from being oxidized or producing impurities during the sintering process.

5. Temperature setting: Set the sintering temperature and time according to the material characteristics.

6. Heating and insulation: The sintering furnace heats up to the target temperature at the set heating rate and maintains the temperature to ensure the full densification of the materials. The insulation time and temperature should be adjusted according to the material characteristics.

7. Cooling: After the sintering is completed, cool down to room temperature at the set cooling rate to avoid cracks or deformation of the parts.

8. Post-processing: According to the need, perform subsequent processing on the sintered parts, such as grinding, polishing, or surface treatment, to ensure that the product reaches the required accuracy and smoothness.

Common Problems of 3D Printing Sintering Furnace:

Incomplete sintering: If the sintering temperature is not enough or the sintering time is insufficient, the 3D printed parts may not be fully densified, resulting in insufficient strength of the finished product or the appearance of pores. Temperature fluctuations can also lead to incomplete sintering.

Oxidation and pollution: Metal materials are easily oxidized at high temperatures. If the atmosphere control of the sintering furnace is not perfect or the airtightness is not good, it may lead to the oxidation of materials or pollution by impurities in the air, affecting the product quality.

Deformation and cracking: Due to excessive temperature gradient or improper cooling rate, the sintering process may cause parts to deform or crack, especially for large or complex-shaped parts.

Uneven sintering shrinkage: 3D printed parts will shrink during the sintering process. If the temperature distribution is uneven or the material composition is uneven, it may lead to a large size deviation after sintering.

Powder residue and adhesion: The surface of some 3D printed parts may have un-sintered powder residue. These powders may adhere to the sintered parts at high temperatures, affecting the surface quality.

Precautions for 3D Printing Sintering Furnace:

Precise temperature control: When setting the sintering temperature, ensure that the temperature sensor of the equipment has high precision and is regularly calibrated. The temperature rise and fall rates should be set according to the material process requirements to avoid sintering defects caused by temperature fluctuations.

Atmosphere protection: To avoid material oxidation and pollution, ensure that the atmosphere control system in the furnace chamber operates normally. According to different materials, select an appropriate atmosphere environment (such as hydrogen, argon, or vacuum) and ensure the purity of the gas.

Gradual heating and cooling: To prevent deformation or cracking problems, set reasonable rates in the heating and cooling processes, especially in the stages with large temperature changes. For ceramic materials, the cooling rate needs to be more slowly to prevent cracking caused by internal stress.

Regular cleaning of the furnace chamber: Regularly clean the inside of the sintering furnace, especially near the tray and heating elements, to prevent the accumulation of powder or other impurities. This helps to keep the furnace chamber clean and avoid pollution during the sintering process.

Appropriate placement of parts: When placing 3D printed parts on the tray, keep the distance between the parts to ensure the uniform distribution of air flow and heat in the furnace chamber. Avoid placing too closely or overlapping to prevent sintering quality problems caused by uneven temperature.

Protective measures: When operating high-temperature equipment, wear appropriate protective equipment to prevent high-temperature burns. Regularly check the safety functions of the equipment, including emergency shutdown devices, atmosphere leak detection, etc., to ensure operation safety.

Equipment maintenance: Regularly maintain each component of the sintering furnace, including heating elements, temperature control systems, and atmosphere control systems. Replace worn or damaged parts in a timely manner to ensure the long-term stable operation of the equipment.

Confirmation of shrinkage rate and size tolerance: 3D printed parts will shrink during the sintering process. Therefore, when designing parts, consider the shrinkage rate of the material and set an appropriate size tolerance to ensure that the finished product after sintering meets the requirements.

By paying attention to these common problems and precautions, it is possible to effectively reduce the problems that may be encountered during the sintering process, improve the quality of 3D printed parts, and ensure the safety and long-term use of the sintering furnace.