Application of customized nitrogen vacuum furnace in chemical industry

The application of customized nitrogen vacuum furnaces in the chemical industry is mainly reflected in material preparation, heat treatment, and reaction environment control. The following are specific application scenarios and advantages:

1. Chemical heat treatment of metal materials: Nitrogen vacuum furnace prevents workpiece oxidation by vacuuming, suitable for nitriding treatment of high-precision metal components such as crankshafts, gears, and molds. The nitride layer is hard but not brittle, possessing toughness and significantly improving the wear resistance of the workpiece. For example, in the nitriding process of stainless steel and alloy steel, nitrogen serves as a protective gas to prevent the volatilization of alloy elements. At the same time, by controlling the nitrogen flow rate and temperature, precise control of the thickness and hardness of the nitriding layer can be achieved.

2. High temperature synthesis of chemical raw materials: In the preparation of materials such as silicon nitride and manganese nitride, a nitrogen vacuum furnace provides an inert environment to ensure stable reaction of reactants at high temperatures. For example, in the production of nitrogen chromium iron, after the raw materials are crushed and ground, high-purity nitrogen gas is filled into a vacuum furnace for nitrogen reaction to produce high nitrogen chromium iron. Nitrogen environment can suppress impurity generation, improve product purity and performance.

3. Catalyst carrier treatment: Chemical catalyst carriers (such as activated carbon and alumina) need to improve their pore structure and surface activity through heat treatment. The nitrogen vacuum furnace can perform high-temperature calcination or reduction treatment on the carrier under anaerobic conditions to avoid pore blockage caused by oxidation. For example, in the preparation of precious metal catalysts, nitrogen protection can prevent the sintering of active components and maintain the high dispersibility and activity of the catalyst.

4. Strengthening of chemical equipment components: Key components such as chemical pumps and valves must have corrosion resistance and wear resistance. A nitrogen vacuum furnace can form a hard layer on the surface of components through processes such as nitrogen infiltration and nitrogen carbon co infiltration. For example, in the processing of titanium alloy equipment, although it is necessary to avoid the reaction between nitrogen and titanium at high temperatures to generate titanium nitride, surface hardening can still be achieved without damaging the substrate properties by precisely controlling the nitrogen partial pressure and temperature.

5. Experimental research and process development: In the research and development of new chemical materials, nitrogen vacuum furnaces provide a controllable reaction environment. For example, in the synthesis of nanomaterials, a nitrogen atmosphere can prevent particle aggregation; In the preparation of superconducting materials, high vacuum and nitrogen protection can reduce impurity doping and increase the critical temperature of the material. Customized design can meet specific temperature, pressure, and atmosphere control requirements.