How to clean the scale in the water system of the mold temperature machine?

It can be cleaned with something acidic, such as vinegar and baking soda.

The mold temperature machine is mainly to accurately control the temperature of the product, after long-term use, in order to have a good sense of temperature, the mold temperature machine must be cleaned to ensure the temperature control, so how should the mold temperature machine be cleaned? The cleaning of the mold temperature machine is mainly to clean the dust and rust in the crucible and keep it clean. So how do you get rid of these?

Let's take a look at the specific step analysis:

Preheat the crucible to about 80 and no more than 100, and brush the surface with paint, which can be repeated 2 to 3 times to obtain a tight, strong and uniform coating. Slow heat to 200/300 to dry. When the mold temperature machine melts the material for the first time, it should use a small piece of nozzle material to cushion the bottom, and if there is no nozzle material, the alloy ingot should be cut into small pieces to ensure that the alloy is in close contact with the pot wall.

Do not put the whole alloy ingot in the pot, resulting in little contact between the alloy and the wall of the pot, and the heat transfer effect is not good, which is difficult to melt and easy to cause the crucible to be partially heated and damage the crucible.

The die-casting temperature of aluminum alloy of the mold temperature machine is generally 620 -680, if the temperature of the alloy liquid is set high, it is easy to overburn the alloy liquid, which will aggravate the oxidation rate of the alloy liquid, so the working temperature of the furnace should be reduced as much as possible without affecting the product forming. The maximum temperature of the pot wall when the furnace of the mold temperature machine is working is more than 800, the strength drops sharply, and cracks may occur under a slight impact or load, and the pot wall should be gently slid down when feeding.

When adding ingots during the smelting process, it should be preheated first to prevent the alloy ingots from being caused by moisture. Due to the erosion of iron by the molten aluminum alloy, the interior and exterior of the cast iron wall are affected by erosion and burning at the same time, which will aggravate the possibility of cracks. The alloy contains silicon and other impurities deposited at the bottom of the pot, and the heat transfer effect becomes worse, which increases the burden on the wall of the pot and wastes fuel.

From the point of view of safety, economy and maintenance of the quality of the alloy liquid, the crucible should be cleaned regularly, the paint should be brushed, and the direction should be changed during continuous use. Generally, the crucible should be cleaned once after about 150 hours of use, re-coated with paint, and rotated the pot 120 degrees. When the mold temperature machine is stopped, it is best to scoop out all the alloy liquid in the crucible, at least 2 3, so as to avoid damage to the crucible due to the heating and expansion of the solidified alloy block when the furnace is opened next time;

Special attention: When melting in the cold furnace, the furnace heating procedure must be observed, and the heating must be carried out intermittently and gradually. Do not directly heat the crucible of the mold temperature machine to the temperature when it is working normally, so as to avoid sharp heating, uneven heating and local expansion and burning of the crucible.