3D printing metal sintering technology is widely used in aerospace, automobile manufacturing, medical equipment and precision mold production. Metal powder is prone to oxidation, burning and splashing during high-temperature laser sintering, which affects the dimensional accuracy, surface finish and mechanical properties of printed parts. The nitrogen generator system specially used for 3D printing metal sintering protection can provide high-purity inert nitrogen atmosphere for the printing cavity, isolate air and oxygen, inhibit metal oxidation and high-temperature combustion, and ensure the quality and stability of metal 3D printing products.

The 3D printing special nitrogen generator adopts high-precision PSA nitrogen production and purification technology, with nitrogen purity stably maintained above 99.99%, which meets the inert protection requirements of titanium alloy, aluminum alloy, stainless steel and other high-precision metal sintering. The equipment has the characteristics of fast gas supply and stable pressure output, which can quickly replace the air in the printing cavity before printing, and maintain a continuous micro-positive pressure nitrogen atmosphere during the sintering process to prevent external oxygen from infiltrating. The high-cleanliness nitrogen output without impurities can avoid particle contamination on the surface of metal parts and ensure the smoothness and precision of printed products.

The system is equipped with intelligent linkage control function matching with 3D printing equipment, realizing synchronous start and stop of nitrogen supply and printing operation. The equipment can automatically adjust nitrogen flow and pressure according to the printing size, sintering temperature and working cycle, realizing accurate gas supply and effectively reducing gas waste. In addition, the nitrogen generator has a compact structure, low operating noise and fast response speed, which can be perfectly matched with different types of metal 3D printing equipment. Long-term stable nitrogen protection can effectively eliminate oxidation defects and internal pores of metal sintered parts, improve the tensile strength, hardness and fatigue resistance of products, and reduce the scrap rate of 3D printing production.