La cama caliente de una impresora 3D es un accesorio crucial en FDM (deposición fusionada) impresoras, que tiene un impacto significativo en el proceso de impresión y la calidad del producto. This article will detail the role, importance, and usage tips of the 3D printer hot bed.
The Basic Function of a Hot Bed
1. Prevent warping edge:
The main function of the hot bed is to prevent the printed object from warping during the printing process. Due to the rapid cooling of the edge of the hot melt material, contraction causes warping. The hot bed maintains a certain temperature by heating the printing platform (such as PLA about 60 °C, ABS about 100 °C), slowing down this process.
2. Improve adhesion:
The hot bed provides an appropriate temperature to enhance the adhesion of the printing material, so that the first layer of printing material can be firmly adhered to the pallet, laying a good foundation for the accumulation of subsequent layers.
3. Guaranteed print quality:
The hot bed helps to maintain the temperature of the printed object, reduce deformation caused by temperature differences, and ensure the overall quality and precision of the printed object.
4. Adaptation to different materials:
The contraction rate of different materials is different, and the temperature setting of the hot bed will also be different. Por ejemplo, al imprimir ABS, the hot bed temperature is generally set to around 110 ° C, while when printing PLA, the hot bed temperature is usually set to around 60 ° C.
5. Heating uniformity:
High-quality hot beds, such as PCB hot beds, can provide uniform heating, which is crucial for ensuring uniform curing of all parts of the printed object and reducing interlayer peeling.
6. Reduce the risk of printing failure:
Using a hot bed can avoid excessive adhesion between the printed object and the hot bed, Reducir el riesgo de falla de impresión, and improve the success rate of printing.
7. Simplify the removal process:
Non-stick hot bed technology makes it easy to remove printed items from the hot bed without the use of tools, reducing the risk of damaging printed items.
8. Increase the selection of printing materials:
Non-stick hot beds are suitable for a variety of materials, such as ABS, PLA, TPU, etc., allowing users to choose printing materials more freely.
Types and Materials of Hot Beds
1. Polyimide heating sheet:
Yellow soft material, uneven heating, easy to damage, need to add 3M tape to fix to the aluminum plate, need to be customized.
2. Heating rod & aluminum plate:
Heating is uneven, and the aluminum plate needs to be very thick.
3. PCB Hot Bed:
It is currently the best hot bed, with even heating, no need to add aluminum plates, and manual leveling can be added. It works stably and is not easily damaged.
Temperature control of hot bed
The temperature control of the hot bed is crucial to ensure print quality. The contraction rate of different materials is different, so the degree of warping is also different. The hot bed reduces the possibility of model warping by maintaining a constant temperature.
Tips for Using a Hot Bed
1. Supply voltage:
The power supply voltage should be consistent with the rated voltage of the hot bed, or slightly higher, but not too high to avoid danger.
2. Closed loop use:
When using a hot bed, temperature measurement, feedback, and temperature control are necessary to ensure temperature stability and uniformity.
3. Wiring:
The wiring must be thick enough to withstand high currents, with a recommended diameter of 2.5 square millimeters.
4. Safety tips:
After the hot bed stops supplying power, it will still maintain a high temperature, so it is necessary to pay attention to safety and avoid burns.
Conclusión
The hot bed of a 3D printer plays a crucial role in improving printing quality, preventing warping, and enhancing the adhesion of printing materials. Choosing the appropriate type of hot bed, setting the temperature correctly, and using the hot bed safely are key factors in ensuring the success of 3D printing. Through this article, we hope to help users better understand and use the hot bed of a 3D printer.
