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Vacuum debinding furnace technology parameter

The alternate type gas inlet and outlet,effective gas uniform distribution,negative pressure removal of binder function.

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Introduction

1.Main function
——Vacuum remove the binder function
——The alternate type gas inlet and outlet,effective gas uniform distribution,negative pressure removal of binder function.
2.Technology index
Material loading size:300×300×600mm
Design temperature:700℃
Max.working temperature:800℃
Heating power:30KW（10KW*3）
Total power:40KW
Binder removing:paraffin,rubber,tar
Temperature uniformity:±10℃；
Temperature speeding:from 30℃to 700℃,the speed is 8℃/minute in the condition of full loading.
Cooling speed:the cooling time is less than 5h from 750℃to 80℃in the condition of full loading.
Rated voltage:380V（±10%），50HZ
Ultimate vacuum:≤20 Pa
Pressure rise：≤5Pa/h
3.Structure feature
a)The furnace structure is horizontal type single door to open,the hearth adopts superior quality of refractory steel(Cr25Ni20）；
b)The hearth is cylinder structure,with good atmosphere uniformity in the hearth；
c)The furnace door adopts double layer water cooling structure；
d)Alternate gas inlet and outlet to remove the paraffin with good paraffin removal uniformity.
e)The heater adopts nickel chromium resistance wire,composing by 3 independent heaters.
f)The temperature uniformity of the product loading area can be fully guaranteed by adopting the three-point temperature control method of the front and rear distributed branch thermocouples.
g)The wax discharge pipeline has heating device and no forming collecting；
h)The furnace is equipped with a roller track and a special graphite loading boat supporting plate,which is convenient to load and unload.
4.Main element

Serial no.	Name	Material	QTY
1	The hearth（including water cooling furnace door and gas charging system）	Cr25Ni20 Thickness 6-8mm	1set
2	The furnace body	Q235A	1set
3	Collecting device	Q235A	1set
4	The heater	Cr20Ni80	3 groups
5	The thermal insulation chamber		1set
6	The draught fast cooling system		1set
7	Vacuum system	2H-30+150 roots pump	1set
8	The thermocouple	“K” type	3pcs
9	Temperature control	FP93	3pcs
10	Electric element	CHINT	1set
11	Control cabinet	MCGS touch screen	1set
12	PLC	Delta PLC	1set
13	Control system	Including cable
14	The mechanical	Including spare parts and paint.
15	Management service
16	Installation and debugging