Major gas carburizing for steel parts used, the use of ultra-lining and the international advanced energy-saving vacuum sealed fan, the furnace pressure to increase without any leakage, temperature uniformity, warming fast, insulation, and an atmosphere of carbon potential uniform workpiece carburizing speed, uniform layer, the seriesPit Gas Carburizing Furnace greatly improved the productivity and quality of carburization.

Structure description:
RQ3 Series Pit Gas Carburizing Furnace is made of the furnace shell, the furnace lining, the lid lifting bodies, vacuum sealed fan, muffle cans, heating elements and other components. Round furnace shell is welded with steel plate and section steel. The furnace lining is made of 0.6g/cm3 high-intensity ultra-light beads vacuum energy-saving refractory brick, aluminum super-long fiber, and masonry expansion insulation granular form of energy-saving lining structure. Lid landing gear box body is formed with the motor gearbox. When the furnace cover needs opening, simply press the button in the control box then the furnace cover will descend at a uniform speed. For the sake of safety, two movements institutions tops trip switch are mounted in the carburizing EAF. When the furnace cover is ascending, the lower movements institutions tops trip switch will automatically cut off the seepage carbon EAF control cabinet main circuit power supply, forcing the heating elements stop working since the power is cut off, The upper switch is used to restrict the height of the movements axis, it can prevent the movements pumped up too high to cause theelevating screw abscisicing from the gear box.

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Technical parameters:

Parameters Name			Model
			RQ3-25-9	RQ3-35-9	RQ3-60-9	RQ3-75-9	RQ3-90-9	RQ3-105-9	RQ3-150-9	RQ3-180-9
Rating Power		KW	20	35	45	60	90	105	150	180
Rating Voltage	V	380	380	380	380	380	380	380	380
Highest Temperature	℃	950	950	950	950	950	950	950	950
Working Temperature	℃	940	940	940	940	940	940	940	940
Phase Number			3	3	3	3	3	3	3	3
Loading size	Dia.	mm	Φ300	Φ300	Φ450	Φ450	Φ600	Φ600	Φ600	Φ800
	Height	mm	450	600	600	900	900	1200	1800	1500
muffle tank	Dia.	mm	Φ450	Φ450	Φ630	Φ630	Φ780	Φ780	Φ780	Φ980
	Height	mm	938	1125	1144	1450	1490	1800	2400	2100
Hearth size	Dia.	mm	Φ590	Φ590	Φ770	Φ770	Φ920	Φ920	Φ920	Φ1120
	Height	mm	958	1150	1164	1480	1520	1830	2430	2130
heating element			Y	Y	YY	YY	YY	YY	YY	YY
heating-up time		h	≤2	≤2	≤2.5	≤2.5	≤3	≤3	≤3.5	≤3.5
lose power		KW	≤7	≤8	≤11	≤14	≤16	≤18	≤28	≤29
control accuracy		℃	±1	±1	±1	±1	±1	±1	±1	±1
Maximum Loading		Kg	50	100	150	220	400	500	800	1500
Weight		Kg	1660	1850	2930	3500	4500	5200	6600	7200

Parameters Name			Model
			RQ3-220-9	RQ3-288-9	RQ3-320-9	RQ3-360-9	RQ3-480-9	RQ3-630-9	RQ3-840-9
Rating Power		KW	220	288	320	360	480	630	840
Rating Voltage	V	380	380	380	380	380	380	380
Highest Temperature	℃	950	950	950	950	950	950	950
Working Temperature	℃	940	940	940	940	940	940	940
Phase Number			3	3	3	3	3	3	3
Loading size	Dia.	mm	Φ800	Φ800	Φ1000	Φ1500	Φ1500	Φ800	Φ1000
	Height	mm	1800	2500	2500	1800	2400	9000	2500
muffle tank	Dia.	mm	Φ980	Φ980	Φ1180	Φ1680	Φ1680	Φ980	Φ1180
	Height	mm	2400	3100	3100	2400	3000	9600	3100
Hearth size	Dia.	mm	Φ1120	Φ1120	Φ132	Φ1820	Φ1820	Φ1120	Φ132
	Height	mm	2450	3130	3130	2430	3030	9650	3130
heating element			YY	YYY	YYY	YYY	YYY	YYYYYY	YYYYYY
heating-up time		h	≤3.5	≤3.5	≤4	≤4	≤4	≤4.5	≤4.5
lose power		KW	≤34	≤41	≤50	≤61	≤74	≤106	≤130
control accuracy		℃	±1	±1	±1	±1	±1	±1	±1
Maximum Loading		Kg	2000	3000	5000	6000	8000	13800	15000
Weight		Kg	7500	7860	8900	9100	9800	13200	14500