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Flange processing production process
2018-12-03
1, whether flange annealing temperature reaches the temperature, the flange processing is generally take the solid solution heat treatment, also is the people of the so-called "annealing" usually, temperature range is 1040 ~ 1120 ℃.
Flange of the process of flange manufacturer production is?
1, whether flange annealing temperature reaches the temperature, the flange processing is generally take the solid solution heat treatment, also is the people of the so-called "annealing" usually, temperature range is 1040 ~ 1120 ℃. You can also through observing hole of annealing furnace and annealing the flange pipe fittings shall be the state of incandescent, but did not appear to soften prolapse.
2, annealing atmosphere, pure hydrogen flanges are generally used as the annealing atmosphere, atmosphere is more than 99.99% purity, if the other part is an inert gas atmosphere, can also lower purity, but can't have too much oxygen and water vapor.
3, the flange machining casting furnace water vapor, on the one hand, check whether the furnace material is dry, first time loading furnace, furnace material must be dry; The second is whether the flange into the furnace pipe residual too much stain, special flange pipe fittings above if there is one hole, don't slack and went in, or we'll get the furnace atmosphere all destroyed.
4, flange furnace, sealing flange bright annealing furnace should be closed, cut off from the air outside; Using hydrogen gas as shielding gas, is only a vent. Check method can wipe with soap and water in each joint cracks in annealing furnace, look to whether running; Which is easy to run gas annealing furnace in pipe and out of the pipe and the place of sealing ring particularly easy to wear, often should check in regularly.
5, flange protection gas pressure, the micro holes in order to prevent the flange, protective gas should maintain a positive pressure in the furnace, if the hydrogen gas protection, general requirements above 20 kbar.
Above is the process, flange manufacturer produces flange have learn more knowledge about the flange can focus on us.
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