1. when the vacuum tube furnace is used for the first time or after a long time, it must be oven. Oven time should be four hours at room temperature 200 hours. 200 to 600, four hours. When used, the highest temperature shall not exceed the rated temperature, so as not to burn the electric heating element. It is forbidden to pour all kinds of liquid and soluble metals into the furnace. The furnace should be operated below 50 degrees below the highest temperature, and the furnace wire has a longer life.
2. vacuum tube furnace and controller must work in the place where relative humidity is not more than 85, without conductive dust, explosive gas or corrosive gas. When a metal material containing grease is heated, a large amount of volatile gas will affect and corrode the surface of the electrothermal element so that it can be destroyed and shortened. Therefore, heating should be promptly prevented and sealed containers or proper openings to be ruled out.
3. vacuum tube furnace controller should be limited to the environmental temperature range of 0-40 degrees.
4. according to the technical requirements, regularly check the wiring of electric furnace, the controller of the connection is good, have no indicator pointer movement stuck retention phenomenon and potentiometer proofreading instrumentation for magnetic steel, wire, spring up demagnetization, fatigue, imbalance and other errors caused by the increase.
5. don't thermocouple in high temperature suddenly pulled out, to prevent the explosion of coat.
6. always keep the furnace clean and remove the oxide and other things in time