Related structure of box tempering furnace

Related structure of box tempering furnace

The box-type resistance furnace structure is mainly composed of furnace body, furnace lining, furnace floor, heating element, roller, circulation system, furnace door, control system and other parts. The furnace body frame is made by welding channel steel and angle steel, and the shell side plate is welded by Q235 steel plate. The structure is firm and reliable, the overall strength is good, it is not easy to be deformed, and the appearance is smooth and clean. iAll welded parts of the furnace body are polished, flattened with iron putty, sprayed with thermal anti-rust paint, and then painted according to the color code provided by the user. Furnace lining is a full-fiber structure. The total fiber thickness of the lining is 240mm. It adopts the standard type produced by Shandong Luyang Co., Ltd. using the vacuum spinning method. After compression, the bulk density is ≥220Kg/m3;t adopts scientific and reasonable inlay method, which is rare in this structure. The thermal bridge short-circuit phenomenon appears, and it is made by combining the two methods of flat stacking. The air tightness is good. It has the advantages of firmness and reliability, convenient maintenance, long service life, good energy saving effect, light weight of the furnace body, and small temperature rise of the furnace body shell. . The heat-resistant steel furnace bottom plate made of ZG3Cr18Mn12Si2N is used for placing the workpiece. A new type of buckle production method is adopted to prevent the workpiece oxide scale from falling on the heating element and form a short circuit. The heat-resistant steel furnace bottom plate is made in blocks to reduce high temperature Deformation and cracking. The heating element distributes power reasonably according to the uniformity of the furnace temperature. The heating elements are respectively arranged on the four sides of the left and right side walls, the rear wall and the furnace bottom; the heating elements are made of corrugated type with 0Cr21Al5 alloy resistance tape. The left and right side walls, the back wall and the furnace door are respectively suspended on the furnace lining fiber with new porcelain screws, and the fiber inlay form of the heating element hanging part on the furnace door is a concave frame structure to avoid collision with the furnace mouth when the furnace door is raised and lowered. ; The heating elements on the bottom of the furnace are laid flat in the grooves made of refractory bricks and fixed with shaped small hooks. The surface load of the heating elements is smaller than that of other parts. The suspension method using the new porcelain screw will not cause short circuit, and it is more convenient to replace and repair.

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