High-temperature bluing method of long and large part
A part, high temperature technology, applied in the direction of metal material coating process, etc., can solve the problems of easy alkali corrosion, poor bluing quality, etc., and achieve the effect of easy turning operation, ensuring stability, and ensuring firmness.
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[0063] Part name: synchronous shaft, part material: 40Cr, external dimension: Φ220×6390mm.
[0064] The high-temperature bluing method of the long parts comprises the following steps in turn:
[0065] The first step: place the support: first place the support at the bottom of the bluing tank. The support is a structure with one end high and one end low. The inclination angle between the low end and the high end and the bottom of the bluing tank is 10 degrees. The distance between the low end and the bottom of the bluing groove is 10cm, and the contact surface on the support that contacts the long parts is arc-shaped;
[0066] Step 2: Prepare bluing solution: firstly determine the predetermined bluing temperature and predetermined bluing time according to the raw materials of the large parts that need to be blued, that is, the predetermined bluing temperature is 140-145°C, and the predetermined bluing time is 60-- 90 minutes, then prepare the bluing liquid in the bluing tank, ...
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