Restoration of wear-out equipment using complex method of 3-D scanning and printing

Abstract

Introduction. Equipment restoration is a complex process that requires a comprehensive approach. Wear of parts and components of large-scale equipment leads to a halt in technological processes, reduced productivity, and sometimes to the complete breakdown of the entire production chain. Problem Statement. In most cases, on-site repair is impossible. However, modern CAD technologies not only allow assessing the extent of wear but also suggest a path to restoration. The widespread use of 3D printing has significantly simplified the process of creating individual parts. However, the high accuracy of the finished product largely depends on the quality of the model. Rapid acquisition of a highly accurate model is possible with the help of a 3D scanner. However, the extensive selection of 3D equipment, as well as materials requiring special conditions, significantly complicates predicting the quality of the finished product. Purpose. To examine the stages of repairing parts using 3D scanning and 3D printing. To provide accuracy values for the obtained models and the quality of finished parts using the example of a part made of semi-crystalline material PEEK. Materials and Methods. The economic feasibility of 3D printing worn parts is argued. Direct and indirect methods of restoration are considered. Accuracy values obtained when printing materials such as PAI2, PP, TPU, ABS, PEEK are provided. Results. The conditions for 3D printing polyetherketone PEEK are identified, as well as the optimal characteristics for obtaining a material with the highest wear resistance. Conclusions. The application of a comprehensive method for restoring worn parts using 3D printing and scanning is a promising and reasonable solution. However, despite the high accuracy and quality of the modern method, the analysis conducted shows the need to study the issues of fastening parts of worn elements and the adhesion of the materials used