Lehr Gas Burner

We are offering lehr gas burner.
lehr gas burner used for annealing process & lehr process responsibilities.
rapid cooling of molten glass generates an uneven temperature distribution in the body of the glass which results in mechanical stress sufficient to cause cracking before the object has reached ambient temperature, or to result in susceptibility to cracking in later use, often resulting from thermal shock. To prevent this, objects manufactured from molten glass are annealed by cooling gradually in a lehr from a temperature just below the solidification point of the glass. Anneal cooling rate depends on the thickness of the glass, and can range from several tens of degrees celsius per hour for thin sections to a fraction of a degree celsius per hour for thick slabs or castings.[2][3]
in glass manufacture, a lehr is typically a long kiln with a temperature gradient from end to end, through which newly-made glass objects such as glasses or vases are transported on a conveyor belt.