Application of nitrogen generator in powder metallurgy industry

In the powder metallurgy sintering process, in addition to the nitrogen generator, ammonia decomposition equipment is also used. End users generally purchase nitrogen generators and ammonia decomposition as gas protection equipment. Use hydrogen as the reducing gas and nitrogen as the protective gas to reduce and protect the iron powder. The hydrogen is generally supplied by ammonia decomposition to produce hydrogen, but the hydrogen content is: 75%, the concentration is too high, you can dilute the ammonia with nitrogen from the nitrogen generator Decompose the gas to reduce the hydrogen content to: 5%-15%, which can greatly reduce operating costs. Nitrogen generators are widely used in mesh belt powder metallurgy sintering furnaces.

This type of nitrogen generator requires high purity, the purity is general: 99.9995%, and the oxygen content is ≤10ppm. The general flow rate is: 20 Nm3/h; 30 Nm3/h; 40 Nm3/h; 50 Nm3/h, 60 Nm3/h, and the larger ones are rarely used. Ammonia decomposition equipment is generally: 10 Nm3/h; 20 Nm3/h; 30 Nm3/h; due to high nitrogen purity requirements, nitrogen purification equipment is required. The customer has nothing to do with the trace amount of hydrogen in the nitrogen, so the hydrogenation and deoxygenation nitrogen purification device is used.

In the powder metallurgy industry, blast furnace smelting iron coal powder injection, continuous casting, steelmaking converter sealing, blast furnace roof sealing, continuous rolling, steel annealing, stress relief, aging, quenching heating, carburizing, nitrocarburizing , Nitrocarburizing, vacuum quenching and other nitrogen-based atmosphere heat treatment nitrogen source, welding and powder metallurgy sintering process protective gas, as well as cleaning, dilution gas.