Pit Heating Furnace

    Pit furnace, also known as pit furnace, furnace, Pit resistance furnace, etc., pit furnace line periodical furnace operation, available for steel, high-speed steel, high manganese steel, high chrome steel, shaft, pipes and other metal materials, machinery parts, steel parts in particular long pieces (such as the shaft member) normalizing, annealing, quenching in air and the general atmosphere or simple protection in heat treatment heating. When the process needs, it can pass into the protective gas to reduce oxidation of the workpiece.

    Well resistance furnace shell is welded by the steel and steel plate, and continuous close welding. Lining made of lightweight refractory bricks, insulation bricks, masonry pearl salt products.

    After heating element with a high electric resistance alloy wire around the forming fan mounted on the studio put bricks. Lid with integral and fractional two structures lid to open and close with manual lever mechanism, electro-hydraulic mechanism, manual worm mechanism, electric conveyor-agency approach. Workpiece using furnace-loading of fractional lid, a workpiece using hanging outside the furnace.

    To ensure operator safety, in the pit furnace furnace equipped with interlock switches open and close the lid when the lid is opened, the power is automatically cut off.

    Each pit furnace heating zones are equipped with two thermocouples for temperature control with a one for over-temperature protection.

Pit furnace parameters:

Pit furnace models	Rated power KW	Power supply		Rated temperature ℃	Studio Size mm	Remark
		Phase	Voltage V
JJ2-40-9	40	3	380	950	φ600×800
JJ2-60-9	60	3	380	950	φ800×1000
JJ2-75-9	75	3	380	950	φ800×1600
JJ2-95-9	95	3	380	950	φ800×2000
JJ2-125-9	125	3	380	950	φ800×3000
JJ2-130-9	130	3	380	950	φ1450×1800
JJ2-140-9	140	3	380	950	φ1200×2400
JJ2-190-9	190	3	380	950	φ1200×3000