Aug 22 2019 · Limescale build-up on the heat exchanger can restrict the flow of water and lead to your boiler overheating. The heat exchangers role within the heating system is to heat cooler water before its then circulated around the radiators. Not only putting the boiler at risk of overheating but could also reduce the lifetime of the boiler.Get a Quote
Causes of Black Smoke in a Boiler. A small amount of white smoke is normal but black or dark smoke coming from your boiler is a sign of a potentially serious problem. You should call a certified ...Get a Quote
While the other heat treatment processes of annealing normalizing and hardening always include temperatures above the metals upper critical point tempering is always done at temperatures below it. When reheating steel thats been hardened you start temperingGet a Quote
The diffusion annealing temperature is very high usually for 100 ~ 200 above Ac3 or Accm the concrete temperature depends on the degree of segregation and the steel grade. The heat preservation time is usually 10~15 hours. After diffusion annealingGet a Quote
If one starts to fire the boiler from a cold start the water will heat up very quickly in the drum and the bottom half of the drum will expand much more quickly than the top half which is not in contact with water. Consequently the bottom of the drum will become longer than the top causing the drum to warp.Get a Quote
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