Details

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Nabertherm markets this range of top hat furnaces for bending and slumping of large glass parts. The top hat furnace is equipped with one table running on rails which can be pulled out for easy charging. As accessory an additional table can be integrated, which is charged while the other table is in the furnace. The top hat furnaces are heated from the ceiling and from the table. 

• Tmax 900 °C
• Heating from lid and table
• 3-zone temperature control (lid-inner circular element, lid-outer circular element, table) for optimal temperature uniformity
• Table heating can be switched-off for fusing
• Heating elements on supporting tubes provide for long service life
• Table heating elements covered by SiC tiles for level stacking support
• Top hat insulated with high-quality fiber material; exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
• Table insulated with multi-layer resistant, lightweight refractory bricks
• Top hat to be opened by overhead crane in floor shop
• Protection guides for easy top hat opening and closing
• Manually-operated exhaust air flap
• Furnace table on fixed chassis for user-friendly charging height (approx. 800 mm)
• Defined application within the constraints of the operating instructions
• NTLog for Nabertherm Controller: Recording of process data with USB-flash drive
• Controller P570 (50 programs with each 40 segments)

• Top hat side heating in case of high top hat dimensions
• Design without table heating or with disengageable table heating for fusing
• Electro-hydraulically driven top hat
• Motorized exhaust air flap for faster cooling of the fusing furnace
• Cooling system to assist cooling the furnace below the quartz inversion
• Table on wheels for free movement
• Interchangeable table system running on rails: to shorten process times and optimise operational capacity, two or more tables, placed alternately under the hood, can be used. An automatic table changing system is also available on request.
• Process control and documentation via Nabertherm Control Center (NCC) for monitoring, documentation and control

Additional Equipment

• Top hat side heating in case of high top hat dimensions
• Design without table heating or with disengageable table heating for fusing
• Electro-hydraulically driven top hat
• Motorized exhaust air flap for faster cooling of the fusing furnace
• Cooling system to assist cooling the furnace below the quartz inversion
• Table on wheels for free movement
• Interchangeable table system running on rails: to shorten process times and optimise operational capacity, two or more tables, placed alternately under the hood, can be used. An automatic table changing system is also available on request.
• Process control and documentation via Nabertherm Control Center (NCC) for monitoring, documentation and control
• Top hat side heating in case of high top hat dimensions
• Design without table heating or with disengageable table heating for fusing
• Electro-hydraulically driven top hat
• Motorized exhaust air flap for faster cooling of the fusing furnace
• Cooling system to assist cooling the furnace below the quartz inversion
• Table on wheels for free movement
• Interchangeable table system running on rails: to shorten process times and optimise operational capacity, two or more tables, placed alternately under the hood, can be used. An automatic table changing system is also available on request.
• Process control and documentation via Nabertherm Control Center (NCC) for monitoring, documentation and control

Model	Tmax	Inner dimensions in mm			Floor space	Outer dimensions2 in mm			Heating power	Electrical	Weight
	°C	w	d	h	in m2	W	D	H	in kW1	connection	in kg
HG 750	900	2100	1200	300	2.52	2550	1800	1350	35	3-phase	1200
HG 1000	900	1750	1000	550	1.75	2200	1450	1600	33	3-phase	1500
HG 1500	900	2100	1250	550	2.63	2550	1700	1600	44	3-phase	2000
HG 1800	900	2450	1850	400	4.35	2950	2350	1600	45	3-phase	2500
HG 2000	900	2450	1500	550	3.68	2900	1950	1600	55	3-phase	2500
HG 2640	900	3000	2200	400	6.60	3500	2700	1450	75	3-phase	3400
HG 3000	900	3500	2200	400	7.70	4000	2800	1600	75	3-phase	3800
HG 4800	900	5500	2100	400	11.55	6000	2700	1600	90	3-phase	4500
HG 5208/S	900	3100	2100	800	6.51	3990	2590	3140	110	3-phase	5000
HG 7608/S	900	3800	2500	800	9.50	4690	2990	3140	143	3-phase	7000
1Depending on furnace design connected load might be higher 2External dimensions vary when furnace is equipped with additional equipment. Dimensions on request