Correct operation steps and daily maintenance of box type resistance furnace
This article mainly describes the correct operation steps and daily maintenance of box-type resistance furnaces. Today, our Kejia electric furnace takes a medium-temperature box-type resistance furnace as an example to describe in detail.
1. Preparation before opening
① Check whether there are tools or other conductive materials in the electrical control box. If there are any forgotten workpieces in the furnace, they should be removed in time.
②Check whether the electrical switch contacts are normal after closing.
③Check whether the temperature control instrument works normally, and turn on its switch to make it in working condition.
2. Open furnace production
① Set the temperature of the automatic temperature control instrument according to the process requirements.
②Put the control "handle" on the position of automatic control to heat up.
③The cold furnace is heated up, and the workpiece can be loaded into the workpiece after the temperature is maintained for 2 hours, continuous production, and continuous furnace loading is allowed.
④ The workpiece should be placed evenly and stably in the furnace, and no contact between the workpiece and the heating wire is allowed.
⑤ Operate strictly in accordance with the process regulations.
3. Shut down the furnace
Turn off the instrument switch, turn off and open the power switch.