| Abstract [eng] |
The work presented the concept of high-temperature polymer and carried out a general and PEI polymer 3D printing technology analysis, reviewed the most popular 3D printers suitable for printing this material on the market, presented parameter tables, structural features and prices, and conducted a comparison of equipment with each other. According to the analysis carried out, a 3D printer of the type FDM was assembled, which can be adapted for printing high-temperature polymers. The controllers used in the printer are Arduino MEGA 2560, RAMPS 1.4 and Marlin software. The work provides a methodology for the proper integration of Marlin software into the printer, specifies specific lines of code in which values are changed or additional factors are described. The printer has 3 mechanical sensors, with the help of which the zero points of motion of the X, Y and Z axes are determined. The designed load-bearing parts and their anchorages at the appropriate locations shall be provided so that the mechanical sensors are fit for purpose. ULTEM 1010 material was used to carry out the test printing of the high-temperature material. A sample of 35 x 20 x 2 mm was printed and the quality of the part was assessed, measuring the dimensions of the part with a caliper. To maintain a high temperature in the heating unit, a PT1000 thermistor was used, which can also operate at a temperature of 500°C. The project analyzed the accuracy of the axial movements of the device, identified the critical points of the printer, where printing can have the greatest errors. The temperature distribution in the heating unit and radiator using a thermal imager and the Pronterface program were also analyzed. The results are presented in the form of graphs and photographs. The hood for the 3D printer is designed and assembled, which allows you to maintain the required higher temperature in the printing space. The work contains the process of assembling the hood and a list of parts used. Finally, the cost of the assembled printer was determined, which was compared with the 3D printers analyzed at work for printing high-temperature polymers. A mathematical model was compiled to calculate the cost of the process itself by printing with PEI material and a comparison with possible variants of the service on the Internet was made. |
