In the production process of super large forgings, its technical parameters and performance indicators have very high standards. The forging process is very complicated, requires high precision, and forging is difficult. A domestic heavy equipment manufacturing company hopes to use the Hualang 3D scanner to detect and analyze the super large forgings produced, and obtain a test data report for product improvement needs.

Practical problems

1. Due to the large volume of super large forgings, traditional measuring equipment cannot measure and make written test reports, making the measurement very difficult.
2. Ultra-large forgings have a large volume with a diameter of 10 meters. When scanning this large forgings, a large-format 3D scanner must be used to scan. Other 3D scanners have a longer scanning time, low accuracy, and a large amount of scanned data. The data cannot be completely stitched in the end.

Holon solutions

The heavy equipment manufacturer has very high requirements for the production of super large forgings. In order to solve the problem of difficult inspection of super large forgings, the heavy equipment company contacted Hualang 3D, hoping to solve the difficult problem of detection, and required 3D scanning The scanning speed of the instrument is fast and the accuracy must be guaranteed to complete the scanning work under the premise of the needs of its customers.

1. Preliminary preparations
Spray developer: improve the contrast of the background color on the surface of the sample and obtain better scan data.
Marking points: Positioning and splicing the acquired data in the scanning software.
Paste code points: enable the 3D photogrammetry system to obtain 3D coordinate values on the surface of the object.
2. Three-dimensional photogrammetry
Holon engineers use a 3D photogrammetric system to obtain 3D coordinates on the surface of super large forgings, and use a 3D photogrammetric system (HL-3DP) to take multiple images of nuclear forgings. Through a three-dimensional ranging method, the HOLON3DP software automatically combines these images. After the calculation, the 3D coordinates of the center of each code point can be obtained, and the 3D coordinates of the key information points on the surface of the object can be calculated.

Super large forgings with a diameter of about 10 meters and a height of 2 meters

Scanning scene of super large forgings with a diameter of about 10 meters and a height of 2 meters

3. 3D scanning
Import the 3D coordinate data of the super large forgings into the HOLON3DS scanning system, and use the 3D scanner α7000 to quickly scan to obtain the 3D data of the super large forgings. The 3D scanner has the characteristics of super large scanning format, fast scanning speed and high equipment stability. Using the three-dimensional photogrammetry system (HL-3DP) in conjunction with the three-dimensional scanner α7000 can correct the point cloud information of a large-area curved surface, greatly improve the overall point cloud splicing accuracy of the three-dimensional scanner, and improve work efficiency. It only takes 2 hours to obtain the three-dimensional data of the nuclear forgings, compare and analyze the original digital model diagram of the super large forgings with the three-dimensional scanning data, and obtain the inspection report.

Super large forging work site

3D scanning point cloud map of super large forging parts

3D scanning STL diagram of super large forging parts

3D inspection drawing of super large forged parts

3D inspection drawing of super large forged parts

Cross-section analysis drawing of super large forged parts