Thermal treatment process for plunger rod (piston rod) of nitrogen gas spring
A nitrogen gas spring and plunger rod technology, used in metal material coating process, coating, solid diffusion coating and other directions, can solve the gap between the hardness of the substrate and the surface, the adhesion is not firm and foaming, the service life is affected, and the seal is damaged. problems, to achieve the effect of easy control of the nitriding layer structure, energy saving and high surface strength
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[0020] Provide a kind of heat treatment process of nitrogen spring plunger rod (piston rod), comprise the steps:
[0021] A1. Select 38CrMoAl (GB / T3077-1999) advanced nitriding steel as the base material of the nitrogen spring plunger rod (piston rod);
[0022] A2. Clean the workpiece to be nitrided first with a cleaning solution to ensure that there is no iron filings, no oil, paint and other foreign matter on the surface;
[0023] A3. Then dry or dry, and wipe the surface of the workpiece with cotton cloth before loading the furnace;
[0024] A4. Place the workpieces evenly on the cathode disk in the glow ion nitriding system. The stacking can be stacked layer by layer. The distance between the workpieces in the same layer is guaranteed to be greater than 15mm. The workpieces in the same furnace are as large as possible. , can extend the heating time, so that the workpiece can be fully balanced in heat exchange;
[0025] A5. Set the following process parameters for the glo...
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