Others BELL ANNEALING FURNACE FOR ATMOSPHERIC NITROGEN
EUROPE (Western and Northern)
The complete system for annealing consists of the following main units:
The bases are provided with diffusers and a plate for the support of the charge during annealing. The bases are equipped with recirculating fans, sealing gaskets to the atmosphere and cooled by a recirculating water.
The furnace bell-shaped supports ten radiant tubes suitably shaped, each tube is heated by a suitable burner and coupled to a pilot of security provided by the flame detector. The oven is also mounted the combustion air fan, a safety valve of methane with manual reset, pressure switches for gas and air.
HOOD COVER CHARGE
A covering hood of the charge, which we will call bell, into the atmosphere will protect the material to be annealed being watertight. An automatic regulator will maintain the pressure constant and positive nitrogen pressure inside the same bell, throughout treatment.
A cooling hood is supplied with the system. This serves to repair the environment surrounding the irradiation of the hood cover once the oven is removed from the base after the annealing and secondly to accelerate the cooling of the material by means of the fans and in the final stage with a cascade water.
APPARATUS FOR AUTOMATIC ADJUSTMENT OF PARAMETERS OF TREATMENT
Surveillance tools, time control of annealing and adjustment of the various parameters and the various power switches are designed on a special operating panel near the system, controlled by a PLC-Pc supervision.
ATMOSPHERE OF PROTECTION
The atmosphere of protection is directly supplied via cylinders or compressed nitrogen removal from liquid tank full of gasifier.