Hebei Box type Resistance Furnace Muffle Furnace High temperature Furnace Wholesale

I. Overview

The series manufactured by our companybox-typeResistance furnace, muffle furnace, high temperature furnaceIt is a transformation and upgrading of old productsEquipped with innovative automation instrument series temperature controllers and corresponding thermocouples produced by high-quality domestic manufacturers, the temperature control accuracy of the electric furnace is higher and more automated. Widely used in various laboratories, industrial and mining enterprises, scientific research institutions for element analysis and determination, as well as general small parts quenching, annealing, tempering and other heat treatment operations.

IIMain technical indicators

RJX900℃ box type

SX21000℃ box type

SX21200℃ box type

SRJX1300℃ box type

Note: Special specifications can be customized according to user needs

3、 Structure Introduction

Box type resistance furnace, muffle furnace, high temperature furnaceThe exterior is rectangular in shape, and the furnace shell is made of high-quality cold-rolled steel plate folded and welded. The workshop is made of high-quality silicon carbide refractory material, and high-quality insulation material is used as the insulation layer between the furnace chamber and the furnace shell. In order to reduce the heat loss at the furnace mouth and improve the uniformity of temperature inside the furnace, a high-quality refractory material made heat shield plate is installed on the inside of the furnace door.

The automatic control system for measuring, indicating, and regulating the temperature inside the furnace is composed ofXMTComplete with a series of temperature controllers. The instrument is equipped with a thermocouple breaking protection device, which can automatically cut off the power supply when the temperature measuring thermocouple breaks during the heating process,To ensure the safety of the electric furnace and the processed workpiece.

4、 Installation and use

1Box type resistance furnace, muffle furnace, high temperature furnaceNo special installation required,Simply place it flat on the indoor floor or platform. The controller should be placed on the workbench, and the inclination of the workbench should not exceed5 Degree. The minimum distance between the controller and the electric furnace shall not be less than0.5 The controller should not be placed on top of the electric furnace to avoid affecting its normal operation.

2The load capacity of the power lines, switches, and fuses connected to the controller and electric furnace should be slightly greater than the rated power of the electric furnace.

3When wiring,Unscrew the terminal post behind the controller and secure the wire nose. The input should be connected to a slightly larger circuit breaker than the electric furnace to ensure that the safety factor is sufficient. Connect the output line to the electric furnace and tighten it. The thermocouple wire must be firmly connected, with red indicating the positive pole and black indicating the negative pole.

4After checking the wiring is correct, power can be turned on. First, turn on the power switch,3Normal display after seconds, factory set temperature is168After connecting the power, the voltmeter displays220Fu, indicating that it is heating up. The temperature gradually increases as the temperature inside the furnace rises,Indicating normal operation.

Set key（SET）1Temperature setting: PressSETKey, makeSVThe display is in a flashing state. Press the "key" to find the desired temperature setting digits, units, tens, and hundreds. Press the plus or minus key to set the desired temperature value. After setting, press againSETPress the key to return the instrument panelSV\\PVNormal display status. When the temperature rises to the set required temperature, the red light will turn on and the green light will turn off, and the electric furnace will automatically shut down and stop heating up.Later, when the temperature inside the furnace drops slightly, the green light will turn on,The red light goes out, and the electric stove automatically turns on again. Repeat the process to achieve automatic control of the temperature inside the furnace.

5To check if the disconnect protection device is working properly, the method is as follows::Release one end of the thermocouple, and the temperature measurement indicator will quickly rise to the point and automatically cut off the heating power supply. If the thermocouple disconnection device is in good condition, it can work normally after reconnecting the thermocouple.

6Oven drying must be carried out when the electric furnace is used again or after a long period of disuse.The process is as follows

When the room temperature rises to 200℃30minute(Open the furnace door and let the water vapor dissipate)

when 200℃ to600℃30minute(Close the furnace door)

when 600℃ to800℃30minute(Close the furnace door)

fiveRepair and maintenance

1The controller should be placed in a well ventilated and non corrosive gas environment, with a working temperature of-10-50℃, relative humidity not exceeding85%

2To ensure accurate measurement, a DC potentiometer should be used for calibration every yearXMTThe temperature gauge of the type temperature controller is used to avoid significant errors

3Regularly check whether the wiring of each part is loose, whether the wire ends are in good contact, and repair any faults in a timely manner.

4appear4aHAlternating flashing with numbers indicates poor contact of the thermocouple and requires rewiring.

5Users can follow the above operating procedures. If the product quality cannot work properly, free repair and replacement of spare parts will be provided within one year until the product is replaced. However, without verifying the quality principles through production, users are not allowed to disassemble and assemble on their own, otherwise they will be responsible for all maintenance costs.