Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding
A single hydraulic prop, corrosion-resistant technology, applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve problems such as hydrogen embrittlement, coating peeling off, environmental pollution, etc., and achieve fatigue resistance. High, good sealing performance, good anti-corrosion performance
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[0014] Example 1:
[0015] A method for manufacturing a corrosion-resistant single hydraulic prop by salt bath nitriding. The method includes the following steps: degreasing, rust removal→alkali washing→cleaning→nitridation salt bath→oxidation salt bath→cooling→cleaning→ Oiled. Specifically:
[0016] (1) The parts that need anti-corrosion treatment on the surface are pretreated by surface degreasing, rust removal, etc., placed in the tooling and fixed, and then placed in an alkaline solution at 75°C for alkaline washing for 5 minutes;
[0017] (2) Put it in a clean water tank at room temperature and wash for 5 minutes;
[0018] (3) Put it into an electric furnace to preheat to 360°C, and put it into a nitriding salt bath in a nitriding furnace;
[0019] (4) Put it into an oxidation salt bath at 440℃;
[0020] (5) After cooling to room temperature, perform the first cleaning at a temperature of 55°C, and perform the second cleaning at a temperature of 80°C;
[0021] (6) Put the oil...
Example Embodiment
[0024] Example 2:
[0025] According to the method described in Example 1: (1) Put it into an electric furnace to preheat to 350°C, and put it into a nitriding furnace in a nitriding salt bath. (2) Put it into an oxidation salt bath at 420℃. (3) After cooling to room temperature, perform the first cleaning at a temperature of 50°C, and perform the second cleaning at a temperature of 75°C. (4) Put the oil in the oil immersion tank at 35℃, and then check the storage.
Example Embodiment
[0026] Example 3:
[0027] According to the method described in Example 1: (1) Put it into an electric furnace to preheat to 340°C, and put it into a nitriding furnace in a nitriding salt bath. (2) Put it into an oxidation salt bath at 430℃. (3) After cooling to room temperature, perform the first cleaning at a temperature of 60°C, and perform the second cleaning at a temperature of 85°C. (4) Put the oil in the oil immersion tank at 40℃, and then check the storage.
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