Instructions for high temperature furnace (muffle furnace)

I The periodic operation mode of the resistance furnace system is summarized The Fe Cr Al alloy wire is used as the heating element, and the high service temperature of Zui in the furnace is 1000 ℃ The electric furnace is equipped with an intelligent temperature control system, which can measure, display and control the temperature in the furnace and keep the temperature in the furnace constant The resistance furnace is made of new fire-resistant and heat preservation fiber material, which has the characteristics of heating block, light weight, energy saving, etc it can be used for element analysis and heat treatment such as quenching, annealing and tempering of general small steel parts in laboratories, industrial and mining enterprises and scientific research institutions II Main technical parameters: rated power: 4kw furnace temperature stability: ＜± 1 ℃ rated voltage: 220V furnace temperature uniformity: ＜± 6 ℃ phase number: single phase rated temperature: ＜ 1000 ℃ furnace size: length 300 × width 200 × height 120 (mm) Heating up time of empty furnace: ≥ 15min overall dimension: length 560 × width 410 × height 560 (mm) loss power of empty furnace: ≥ 0.5KW III brief introduction of structure: the resistance furnace is furnace controlled, the shell is made of steel plate folded and welded, the shell surface is electrostatic spraying, and the paint film is beautiful and firm The furnace is a whole fiber structure with integrated furnace mouth and furnace The furnace is embedded with electric hot wire The furnace body and shell are of air insulation structure The surface temperature rise is low, the working environment is good, the structure is reasonable, and the use and maintenance are convenient IV installation and use method 1 First, check whether the complete system of electric furnace is in good condition Whether the instruction manual and certificate are complete, and carefully read the instruction manual 2 Place the electric furnace horizontally on the workbench, and connect the power cord with the power supply for use Pay attention to the wire connection mark when connecting 3 The shell of electric furnace shall be reliably grounded to ensure safe use 4 When the electric furnace is used for the first time or for a long time, it must be dried Oven drying method: set the temperature at 200 ℃ and work for 4 hours (open the door slightly and let out the moisture) Set the temperature of 600 ℃ and work for 4 hours After drying, the electric furnace can be put into normal use V maintenance and safety precautions 1 During the operation of the electric furnace, the temperature in the furnace is strictly prohibited to exceed 1000 ℃ In order to prolong the service life, the long-term working temperature shall be 50 ℃ lower than the rated temperature 2 The number of times to open the furnace door shall be reduced during the work to avoid the rapid cooling and heating of the temperature in the furnace and to protect the furnace in good condition 3 The furnace door should be opened and closed gently, and the workpiece should be taken and placed gently to avoid damaging the furnace mouth and furnace When taking and placing the heated workpiece, the power supply shall be cut off to ensure personal safety 4 When the thermocouple or temperature control instrument is damaged and needs to be replaced, it shall be ensured that the temperature transition of the thermocouple and temperature control instrument is consistent, otherwise the furnace temperature will be inconsistent with the temperature displayed by the temperature control instrument, and the electric furnace will be burnt if it is serious 5 It is forbidden to pour liquid directly into the furnace, and the iron filings and oxide scales in the furnace shall be cleaned frequently to keep the furnace clean 6 The electric furnace shall not be placed in the environment with strong magnetic field, strong corrosive gas, large amount of dust, vibration or explosive gas, and the environment temperature is 5-40 ℃ and the relative humidity is not more than 80% Shangyu Star Instrument Equipment Co., Ltd is located in Daoxu Town, Shangyu District, Shaoxing City, Zhejiang Province It is an enterprise integrating production, product development, processing and trade The company's main products: drying box series, incubator series, laboratory muffle furnace series, distiller series, as well as clean workbench, air shower room, ventilation cabinet, biosafety cabinet and other complete sets of purification equipment The company has a strong technical research and development team, a strong after-sales service system, is the leading manufacturer of complete set of laboratory equipment in China, welcome customers to buy.