Medium frequency furnace how to hit the furnace with what hit the furnace material Medium frequency furnace generally use quartz sand or neutral hit the furnace material, the process is different, the general medium frequency furnace has two kinds of hitting methods, one is dry play one is wet play. Take a look at the introduction of Hubei Anaijie furnace material manufacturers

It is a good quartz sand material, which adds a high temperature agent, no matter which kind of old furnace should be cleaned and dried after being dismantled, the glass cloth is laid, the bottom of the furnace is put into the material, smashing strong, smashing flat, the depth of the bottom of the furnace is usually about two circles of the induction ring, and then the furnace is put into the furnace, filling, pay attention to the right, dry hit directly smashing strong, wet hit is the material and good filling, and then beating the furnace, Firm the material. After timely extraction of gall.

Neutral charge beating:

First, the mold preparation: first clean the mold, brush a layer of graphite powder mixed with oil or water on all sides, and then let the mold natural air dry.

Second, intermediate frequency furnace preparation: the temperature of the intermediate frequency furnace must be reduced to below 50 before construction, the inner wall of the coil cement must be cleaned, there is no adhesion of residual material or dust, and water can be sprayed to the inner wall of the coil cement.

Iii. Construction

1. Furnace bottom construction

(1) Mixing of neutral ramming materials: first clean up the mixer, start the mixing motor, add the lining material (the amount added does not exceed 2/3 of the mixer container), add 4-5% tap water to stir, stirring time 8-10 minutes. Note: The method of judging the amount of adding: grasp the material after mixing by hand, which can form a group and is not loose.

(2). Bottom construction: When pouring the furnace lining evenly into the bottom of the furnace, add 100mm thick each time, use the plate vibration to tamp the bottom material, then pull the surface, add 100mm thick, use the plate vibration to tamp the bottom material, and so on.

2. Furnace wall construction:

(1) After the construction of the bottom of the furnace, sit the mold into the medium frequency furnace, and ensure that the gap thickness of the non-cement coils on both sides of the mold is the same.

(2). Then pour the ramming material into the intermediate frequency furnace gap, pour the material evenly along the side wall at the same position, add the height of about 100mm, drag the vibrator around the mold, the purpose is to make the material fully exhaust and dense, and help reduce the segregation of the material during the mold vibration process. Then the surface is brushed, and then the height is about 100mm, and the vibrator is dragged around the mold, and so on. Luoyang All-Tong kiln industry warm tips: the height of the material is higher than the height of the coil mortar during construction.

3. Maintenance: Over 25, natural maintenance for 24 hours

4. Demoulding: Use the car to pull up the mold, and be careful when pulling the mold to prevent damage to the working lining.

5. Baking: low temperature baking time: 2-4 hours, temperature <300; Medium temperature baking time: 6-8 hours, temperature 300 ~ 800; High temperature baking time: 2-4 hours, temperature 800 ~ 1000.

Quartz sand furnace: choose to use quartz sand as the main raw material, the particles are composed of multiple levels, dry materials, and stirred evenly, shorten the drying and sintering cycle, the user can directly build the furnace without stirring, its characteristics are not hanging slag, crack, moisture failure, repair furnace is convenient, and corrosion resistance, especially to improve the furnace age, significantly improve economic benefits. It has the advantages of low cost, many times of baking, high temperature resistance, etc., and is widely used by foundry enterprises.