Cross-sectional hardness of aluminum welds (spot welding)

Cross-sectional observation and hardness measurement of the weld joint were conducted! It was found that the void in the center is a blowhole.

We conducted hardness measurements on aluminum spot welds after performing cross-sectional observations, and we would like to present an example of the trends observed in Vickers hardness, Young's modulus, and elasticity ratio. From X-ray radiographic observations, voids were confirmed within the weld area. Cross-sectional observations revealed that the void in the center was a blowhole. Additionally, the hardness measurement results indicated that the area near the blowhole was hard but had low stiffness, making it prone to deformation, while areas slightly away from the blowhole exhibited higher stiffness and were somewhat brittle. [Summary] ■ Observation case of aluminum spot welds: optical microscope images, X-ray images - Voids confirmed within the weld area from X-ray radiographic observations ■ Hardness measurement of cross-section of aluminum spot welds - Measurements conducted focusing on the blowhole - Investigation of trends based on Vickers hardness, Young's modulus, and elasticity ratio *For more details, please refer to the PDF document or feel free to contact us.

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We sincerely apologize for the inconvenience, but we will be closed for summer vacation during the following period. Closure period: August 9 (Saturday) to August 17 (Sunday), 2025 Inquiries received during this period will be addressed sequentially starting from August 18 (Monday). We appreciate your understanding and cooperation.

Thank you very much for visiting our booth at the "High-Performance Materials Week [Osaka] 13th High-Performance Plastics Exhibition." Thanks to you, we had many visitors and were able to conclude the event successfully. In addition to the "PPLB-445" displayed on the day, we have a variety of products available. For those who were unable to measure samples at the venue, we offer a trial measurement service. Furthermore, for those who would like to know more about our products and services, we also accept online meetings. We welcome inquiries from those who attended as well as those who could not make it this time due to scheduling conflicts. Please feel free to contact us.

Aioi System is pleased to announce the release of the low-power wireless display "NW2991-JP," which achieves long battery life. This product supports 920MHz band wireless communication and can be operated in conjunction with wired displays. It can be easily integrated into existing systems by simply adding a master unit. With a high-speed response time of under one second and a variety of display functions for text and barcodes, it supports a wide range of applications. ▼ For more details, please see the press release linked below ▼ ■ Main Features - Maintenance-free design with a battery life of one year (low power consumption) - Compatible with mixed operation with wired displays - High-speed response (under one second) and diverse display formats - Stable communication in the 920MHz band ■ You can see the actual product at the exhibition This product will be displayed at the TOPPAN booth during the International Logistics Comprehensive Exhibition 2025, 4th INNOVATION EXPO. We invite you to visit the venue, see the actual product, and experience its performance. Dates: September 10 (Wed) - 12 (Fri), 2025 Venue: Tokyo Big Sight (Halls 4-8) Booth No: 5-907 (TOPPAN booth) Exhibition official website ▶ linked below We sincerely look forward to your visit.

Thank you very much for visiting our booth at the "Monozukuri World (Measurement, Inspection, and Sensor Exhibition) 2025." Thanks to you, we had many visitors, and the event concluded successfully. In addition to the "PPLB-445" showcased on the day, we have a variety of products available. For those who were unable to conduct sample measurements at the venue, we offer a trial measurement service. Furthermore, for those who would like to learn more about our products and services, we also accept online meetings. We welcome inquiries from those who attended, as well as those who were unable to come this time due to scheduling conflicts. Please feel free to reach out to us.