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Superfine 316L stainless steel powder injection molding degreasing process

June 28,2023

The debinding process for ultra-fine 316L stainless steel powder injection molding may need to be more careful and controlled than the debinding process for ordinary powder injection molding. 

The following are the general research directions and considerations of the ultrafine 316L stainless steel powder injection molding degreasing process:


Solvent selection and optimization: Select a solvent suitable for degreasing ultra-fine 316L stainless steel powder. Since ultrafine powder has a large specific surface area and surface energy, the choice of solvent needs to consider its influence on the solubility and surface tension of ultrafine powder. Optimize the formula and ratio of solvents to achieve effective degreasing effect.

Debinding temperature and time control: The debinding process of ultrafine powder may require lower temperature and shorter time to avoid powder agglomeration and particle adhesion. By studying the degreasing effect under different temperature and time conditions, the optimal degreasing process parameters were determined.

Stirring cycle conditions: Ultra-fine 316L stainless steel powder is easy to agglomerate during the degreasing process, which affects the degreasing effect and the quality of the molded parts. Optimize the stirring cycle conditions, improve the contact dispersion effect between solvent and powder, and prevent powder agglomeration.

Residue removal and control: Ultrafine powders may leave more solvent residue after degreasing. Take appropriate methods to remove residues, such as ultrasonic cleaning, air blowing, etc., and control the content and distribution of residues by adjusting the degreasing process parameters and formula.


Surface quality and performance evaluation: surface quality and performance evaluation of ultra-fine 316L stainless steel powder injection molded parts after degreasing. Including surface roughness, metallographic microscope observation, residual solvent content test, etc., to ensure that the degreasing process does not cause damage to the surface of the ultrafine powder formed part and meets the use requirements.

Process control and optimization: establish reasonable degreasing process control and quality standards. By adjusting the degreasing process parameters, solvent formulation and operating conditions, a stable degreasing process and consistent finished product quality are achieved.


It should be noted that the research on the degreasing process of ultra-fine 316L stainless steel powder needs to comprehensively consider the powder characteristics, degreasing process parameters and application requirements, and determine the best degreasing process plan through experiments and optimization. Therefore, the specific research content and methods can be adjusted and expanded according to the actual situation and research purposes.


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