Chengdu Box type Resistance Furnace (Laboratory)

NegotiableUpdate on 06/04

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Nature of the Manufacturer: Producers

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Overview

The Chengdu box type resistance furnace (laboratory) is a universal heating equipment. According to their appearance, they can be divided into box furnaces, tube furnaces, crucible furnaces, etc. Muffle furnace is translated from English as Muffle furnace. Muffle means package, furnace means stove, and melting pot means furnace. The common names for muffle furnaces in China are as follows: electric furnace, resistance furnace, Maofu furnace, and muffle furnace. Muffle furnace is generally a high-temperature furnace provided for laboratories, with different names. The products referred to are of the same category and are collectively referred to.

Product Details

Usage and precautions of Chengdu box type resistance furnace (laboratory)

1. The refractory material of the new furnace contains moisture. In addition, in order to generate an oxide layer on the heating element, it must be baked at low temperature for several hours before use, gradually heated to 900 ℃, and maintained for more than 5 hours to prevent the furnace from cracking due to rapid temperature changes caused by moisture.

When heating in a muffle furnace, the furnace jacket will also become hot. The furnace should be kept away from flammable materials and the outside of the furnace should be kept easy to dissipate heat.

The working life of the heating element depends on the oxide layer on its surface. Breaking the oxide layer will shorten the life of the heating element, and each shutdown will damage the oxide layer. Therefore, shutdown should be avoided after startup.

4. When using, the furnace temperature should not exceed a high temperature to avoid burning out the electric heating elements, and it is forbidden to pour various liquids and melted metals into the furnace.

When conducting ashing tests, it is necessary to fully carbonize the sample on the electric furnace before placing it in the ashing furnace to prevent carbon accumulation from damaging the heating element.

After several cycles of heating, cracks may appear in the insulation material of the furnace, which are caused by thermal expansion and have no impact on the quality of the furnace.

7. The muffle furnace is an experimental material and cannot be used for other purposes. Samples must be stored in clean crucibles and must not contaminate the furnace.

8. When using a resistance furnace, it should be regularly monitored to prevent accidents caused by self-control failure. Do not use the resistance furnace when there is no one on duty at night.

After using the muffle furnace, the power should be cut off to allow it to cool down naturally. The furnace door should not be opened immediately to avoid sudden cracking of the furnace due to cold. If it is urgent, a small gap can be opened first to accelerate the cooling process. The furnace door can only be opened when the temperature drops below 200 ℃.

10. When using a muffle furnace, pay attention to safety and beware of burns.

Specification parameters:

model	AS-1400
Temperature parameters	1400℃
Voltage AC	220V/380V
rated temperature	1400℃
Long term working temperature	1350℃
Uniformity of temperature field inside the furnace	±5℃ (depending on the size of the heating chamber)
Temperature measuring components and temperature measuring range	Platinum rhodium platinum S temperature measurement range 0-1700 ℃
Program curve segment	30 paragraphs
heating rate	1 ℃/h-40 ℃/min, recommended 20 ℃/min
Heating element	Elema
Thermal insulation material	Imported high-purity alumina fiberboard
Cooling method	Double layered furnace shell, air-cooled
Furnace body temperature	≤ 50 degrees
Warranty scope and duration	The electric furnace comes with a one-year free warranty, and the heating element is not covered by the warranty (natural damage within three months can be replaced free of charge)
Customer selection	1. Crucible, box bowl, corundum furnace pad/silicon carbide pad 2. RS485 communication, computer control software and hardware 3. Touch screen controlled temperature controller 4. Paperless recorder 5. Increase exhaust ports 6. Consumables: Heating elements, temperature measuring components 7. Increase observation ports and endoscopes

Furnace specifications:

specifications	Furnace dimensions (depth, width, height mm)	voltage	Power kw	PID instrumentControl accuracy
A	100x100x100	220	1	±1
B	150X100X100	220	1.5	±1
C	200X150X150	220	2	±1
D	300X200X120	220	4	±1
E	200×200×200	220	6	±1
F	300×200×200	220	8	±1
G	300X250X250	220/380	8	±1
H	300×300×300	220/380	10	±1
I	400X250X160	220/380	8	±1
J	400×300×300	220/380	12	±1
K	500×300×200	220/380	15	±1
L	500×300×300	380	18	±1
M	500X400X400	380	20	±1
N	500×500×500	380	25	±1
U	800×500×500	380	40	±1
V	1200×500×500	380	85	±1
W	1200×800×800	380	110	±1

Chengdu Box type Resistance Furnace (Laboratory)Special furnace dimensions can be customized according to customer requirements!

The correct operation process of high-temperature box type resistance furnace

The specific process operation of the box type resistance furnace is as follows:

1. Check the "shift handover record" before starting work.

2. Operators should wear the prescribed protective equipment and be familiar with the "safety operating procedures".

3. Check the lubrication condition of the axle and slide rail of the furnace door opening mechanism.

4. Check the installation and fastening of the furnace lining, resistance wire, and thermocouple lead out rod, and verify if the instruments are functioning properly.

5. Check that the resistance wires at the bottom of the furnace, the bottom plate of the furnace, the transmission mechanism of the movable furnace bottom, and the motor lead wires are in good condition.

6. Check the cleanliness of the furnace and clean the oxide scale.

7. Newly repaired furnaces should be dried according to the "process specifications".

8. Cut off the power and proceed with the baking process according to the "process specifications".

9. Close the door of the box type resistance furnace.

10. Insulate according to the "process regulations".

11. Power on heating.

12. Cut off the power after work.

13. Produce the furnace according to the "process specifications".

14. Reinstall the furnace and repeat the above procedure.

When the box type resistance furnace is operated continuously, the "handover record" must be carefully filled out, and the handover must be clearly handed over to the successor in person.

16. Maintain and upkeep the equipment according to the "Equipment Maintenance Regulations".