What are the points to pay attention to when purchasing heating tubes

The most common application in single head electric heating tubes is the mold single head electric heating tube, and the design of the mold single head electric heating tube has become a very important topic. A good design of the mold single head electric heating tube can extend the service life of the mold single head electric heating tube. Here are some things to pay attention to when purchasing a heating tube:

As for the single head electric heating tube of the mold, the most important thing in the design of the single head electric heating tube of the mold is to ensure that the heat generated by the heating tube can quickly transfer to the heating medium, reduce the temperature of the raw materials inside the heating tube, and effectively increase the service life of the single head electric heating tube of the mold.

(1) Efforts should be made to reduce the gap between the outer diameter of the single head electric heating tube of the mold and its insertion hole diameter. Generally, the gap between the two is less than 0.1-0.2mm. For example, for a heating rod with a diameter of 10, the hole diameter should be within 10.2.

(2) When machining installation holes, the coaxiality and size should be effectively ensured, such as using reamers and other equipment to adjust the machining.

(3) Before installing the heating tube, the residue left during processing should be sorted out. If there is residue such as engine oil, it will be carbonized after heating, which will affect the strength of heat conduction.

(4) There will be no problem when using it at the design voltage. The essential power during use can be calculated according to the following formula: [Application voltage/Design voltage] * [Application voltage/Design voltage] * Design i power=Power during use (for example). For a rated voltage and power of 230V 500W electric heating tube with a voltage of 220V, its operating power is 418.6W, which is about 84% of the rated power.

The above are the precautions to be taken when purchasing a heating tube, hoping to be helpful to you.