MUFFLE FURNACE

GWDL-XL Box Furnace   Product Introduction and Technical   Data

一、

Product Name: Resistance Furnace / Box Furnace / Muffle Furnace 电炉/马弗炉

Contact :Ella Tang,

Tel: 15637962277

 Email: sales@gwdl.com

二、

Model： GWDL-XL

Specifications: 1200, 1400, 1600, 1700, 1800 degrees

三、

Product Description

四、

Technical Parameters

Highest Operating

Temperature

1200℃

1400℃

1600℃

1700℃

1800℃

Long-term Operating

Temperature

1150℃

1350℃

1550℃

1680℃

1780℃

Temperature

Control Range

100-1200℃

100-1400℃

100-160

0℃

100-170

0℃

100-1701℃

Temperature

Control Accuracy

±1℃

±1℃

±1℃

±1℃

±2℃

Temperature

Measurement

k

S

B

B

B

Heating   Element Material

High-tempera ture alloy resistance wire

Silicon carbide   rod

Silicon molybde num rod

Type 1800

silicon   molybde

num rod

Type 1801 silicon molybdenum rod

Installation Position of Heating

Elements

Three-sided heating, sides plus bottom

Top/bottom or   sides

sides

sides

sides

Maximum

Heating Rate

Maximum heating rate of 40°C/min (non-linear)

Structure and Material of the Furnace Body

The furnace   body adopts advanced air-cooled double-layer carbon steel structure,   effective air-cooled guide plates allow overall circulation of cold air   within the shell, finally cooling the conductive sheets of the heating   elements before exiting the furnace body, preventing high-temperature oxidation of the conductive   sheets of the heating elements; ensuring a good working

environment.

Door Opening Method

The door   opening method is axial 180-degree side opening plus 360-degree rotation, the door lock is located on the side of the door and is equipped with an elastic lock that can   effectively lock the door. The elasticity of the lock absorbs the expansion   of the refractory material, ensuring free thermal expansion and contraction of the refractory material while providing effective

sealing.

Refractory   Insulation Material

The   furnace lining is made of vacuum-formed high-purity alumina light material, has a high operating temperature, small heat storage capacity, is   resistant to rapid heating and cooling, does not crack or drop slag, and has

excellent insulation properties.

Shell

Temperature

Shell temperature less than 45°C

Safety Protection

Uses an integrated module control unit with accurate control precision, and designs   dual-loop control and protection, which includes overshoot, undershoot,   segmental failure, phase loss, overvoltage, overcurrent,

overtemperature, current feedback, soft start, etc.

Door Open Cut-off

The furnace is designed to disconnect the main heating circuit when the   door

is opened at high temperatures during operation, greatly protecting against   electrical shock risk when handling high-temperature materials.

Safe Temperature Control

Uses   closed-loop technology thyristor   module triggering control, phase angle triggering control or zero-crossing triggering method, output voltage, current or power continuously adjustable, has constant   voltage, constant current or constant power characteristics; the current loop is the inner loop, the voltage loop is the outer loop, when   there is a sudden load increase or the load current exceeds the limit   value, the output current of the voltage   regulator is

limited to the rated current range, ensuring normal operation of the output

Temperature Curve Setting

Uses an intelligent temperature   control instrument with standard PID, artificial intelligence regulation APID   or MPT and other types of adjustment   methods, having self-tuning and learning functions, no overshoot or   undershoot characteristics, equipped with 30-segment program control   function, can realize any slope of heating and cooling control, has jump   (cyclic), run, pause and stop commands that can be programmed/operated,   allows modification of the program during controlled operation; using   artificial intelligence adjustment algorithms with curve fitting capabilities,

smooth and even curve control effects can be obtained.

Number of Heating Curve Segments

50-segment program control   function, can be set to input: one curve is 50 segments, two curves are 28 segments each, three curves are 15 segments each, five   curves are 9 segments each; multiple curves can be entered

simultaneously, can be used arbitrarily during use.

Panel Buttons

Two buttons respectively: Main power button/knob, heating chamber

connection button/knob.

Standard

Accessories

Tongs, one pair of high-temperature gloves.

五、

Warranty Scope and Period

The   electric furnace is free under   warranty for one year, the furnace bottom plate is not under   warranty, the heating elements are not under warranty (free replacement if naturally damaged

within three months).

六、

Packaging List

Electric furnace one unit, tongs one pair, high-temperature gloves one pair, furnace bottom

support plate one piece, manual one copy, certificate of conformity one copy, acceptance report (factory inspection report) one   copy, sales delivery note one copy.

七、

Precautions

1. To prevent affecting the service life of the electric   furnace, it is recommended to keep the maximum heating rate and cooling rate between 1-15°C/min (heating element life will shorten

if heated too quickly at high temperatures).

2. This box furnace does not have a vacuum sealed structure, so flammable and explosive gases

should not be introduced.

3. After a period of use, minor cracks may appear in the furnace chamber, which is normal and

will not affect usage; these can be repaired using an alumina coating.

4. It is not recommended to introduce corrosive gases; if strong corrosive gases like sulfur (S) or sodium (Na) need to be   introduced, please inform us in advance so we can provide special

treatment for the furnace chamber.

5. High-temperature solutions must not leak onto the furnace bottom; preventive measures

include using a support plate or alumina powder for isolation.

八、

Shipping Matters

1. The packaging of the electric furnace consists of three layers: wrapped in sponge paper, then

wrapped with plastic film, and finally packed in a wooden box.

2. Free domestic delivery to the doorstep (free delivery within city limits).

3. We bear any damage to the electric furnace during transportation.

4. Logistics methods: by truck, railway, ship (for export), air freight (for export); for shorter distances, our company   dispatches a dedicated vehicle (packaged in wooden pallet plus

cardboard box).

九、

Optional Add-on Function List

Name

Function Description

Temperature Controller

Standard with 50-segment heating curve, optional import instruments (B)

two option s, choos

e one

Touchscreen

Chinese menu, multiple heating process curve storage, storage of

historical curves and data reports (7-inch).

four option s, choos e one

IoT Interface

RS485 communication interface   for the furnace to read/write furnace startup, pause, stop, heating curve, allowable time, etc.,

real-time data

Computer Control Software and Hardware

Can control furnace startup, pause, stop, heating   curve setting, heating curve reading, parameter setting, etc., via computer;   high reliability, easy to master; measurement values, set values, output   values, duration, segment number, heating curve, power percentage curve can   be stored via computer, modified set values and commonly used parameters,   historical curves, historical report

recording intervals can be selected (1s-1h) and saved long term.

PLC

Siemens PLC control   (read/write furnace startup, pause, stop, heating curve, time, temperature curve, atmosphere, flow, switching quantities, power supply, power) open port for   serial/parallel data

with upstream/downstream equipment

Observation

Port

Observation port designed on the furnace door, using high-temperature

resistant quartz glass

Inlet Valve

A floating ball flow meter along with a manual valve; the number of

flow meters, maximum production capacity, and selectable gas media.

two option s, choos

e one

A digital display mass flow meter; the number of flow meters,

maximum production capacity, and selectable gas media.

Exhaust Valve

Exhaust valve, manually opened; DN30

two option s,

choos

Electrically operated, automatically opens or closes according to the heating curve in N segments.

Automatic Inlet and Exhaust

Electric exhaust valve and electric inlet valve can be associated with heating   curve segments to automatically open/close at any temperature segment

during heating process (premise is selecting touchscreen function)

Mobile Casters

| Two swivel casters, two fixed casters

Rapid Cooling

Uses frequency converter plus centrifugal fan to achieve programmable

cooling

Electric Upward

Opening Door

Electric upward opening door + foot pedal control board

Multi-point Temperature

Control

Standard with heating on both sides; additional independent temperature control for furnace door,   furnace bottom, back side, furnace top, etc., to

improve uniformity of furnace temperature

Stirring Fan

Metal stirring fan within 1050°C - 4000; frequency converter - 1500-2000;

PLC with automatic start/customization by temperature segment - 4000

Independent

Control Cabinet

Control separated from the furnace body, add independent control cabinet

(1600x600x400) and increase control cable length (within 5 meters)

Heat Storage Furnace

Bottom

Furnace bottom sunken 50mm hollowed out, multiple supports added to increase support plate, cost increases by 5%.

Waste Gas

Treatment

Add VOC waste gas treatment furnace 40m³/H; 80m³/h

Corrosion-resist ant Furnace

Chamber

Corrosion-resistant furnace chamber material against acids, alkalis, and hydrofluoric acid

Heating Element

Protection

Heating element comes with protection to prevent contamination by powders and   corrosion by volatiles, etc.

Clean Furnace

Chamber

Furnace chamber uses ceramic, high-temperature glass, high-temperature

metal, etc., to prevent dust and volatiles, etc. |