Proposing Solutions to Challenges in Die Casting Manufacturing — Supporting Decarbonization, Improved Welding Quality, and Higher Inspection Accuracy at the "2026 Japan Die Casting Congress & Exposition " —
Daiichi Jitsugyo Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director, President & COO: Yuji Funawatari, hereinafter “DJK”), a general machinery trading company, is pleased to announce that DJK will exhibit at 2026 Japan Die Casting Congress & Exposition, held at Pacifico Yokohama in Japan, from November 12 to 14, 2026. To address challenges in die casting manufacturing, such as reducing CO₂ emissions, lowering welding defects, and improving the accuracy of visual inspection, DJK will introduce solutions that utilize its partner companies' hydrogen furnace, laser processing, and AI inspection technologies. In addition, through the presentation of a research paper by our employee, DJK will introduce the potential applications of laser technology in die casting manufacturing.
Carbon Neutral Solution
The combination of Miyamoto Manufacturing Co., Ltd.'s hydrogen melting and holding furnace and LB Weld Co., Ltd.'s laser cutting and shredding technology enables energy savings and reduced CO₂ emissions throughout the entire process, from melting to material recharging.
The hydrogen melting and holding furnace uses a hydrogen-fueled burner, resulting in zero CO₂ emissions during combustion. In addition, the laser cutting and shredding technology can cut and shred materials of various thicknesses and 3D shapes. By omitting the cooling process and charging the remelting material directly into the furnace, improvements in thermal efficiency and combustion efficiency through shape optimization are expected.
Laser Welding Machine
The laser welding machine from LB Weld Co., Ltd. achieves high-quality welding between die-cast materials using the PPL (PRECISION POWER LASER™) method. Die-cast materials are prone to welding defects due to small internal cavities (porosity or shrinkage cavities) within the material. Using the PPL method, this welding machine precisely controls arc generation and reduces heat input during welding.
AI Visual Inspection System
AI software from HACARUS Inc. is installed on the inspection machines from TMC System Co., Ltd. For visual inspection, the AI is trained with data on good products, which reduces the risk of overlooking defective products. In addition, the ability to retrain the system using false detection data enables inspections based on both good and defective samples, helping to improve inspection accuracy and reduce the false positive rate. Its most notable feature is the ability to identify cold shut marks (flow wrinkles), which are difficult to distinguish. A demonstration unit is installed at TMC System's head office (Kawasaki City), and the system can be adjusted to meet the requirements of manufacturing sites.
Research Paper Presentation
Title: Utilization of Laser Technology in Die Casting
Date and Time: November 13, 2026 9:20 – 9:50
Venue: Pacifico Yokohama, Room B: F205-206
Speaker: Reito Kobayashi, Chubu Drive Systems Department, Daiichi Jitsugyo Co., Ltd.
Exhibition Overview
Exhibition Name: 2026 Japan Die Casting Congress & Exposition
Dates: November 12–14, 2026 9:00 – 17:00
*Open to the public from 9:30 on the first day, following the opening ceremony.
*Close at 13:00 on the last day
Location: Pacifico Yokohama Hall C & Hall D
Booth Number: Hall C,C-31
Official Website: https://www.j-dec.jp/2026/english/
DJK is committed to its vision as a "Next-generation engineering trading firm" Through continued delivery of optimal solutions to manufacturing facilities and production environments, DJK will fulfill its mission to "Connecting people, Connecting Technology and Enriching the World." while contributing to the realization of a sustainable society.
Contact：
East & Central Japan e-Powe Drive System Department, Automotive Business Division,
Daiichi Jitsugyo Co., Ltd.
E-mail : automotive@djk.co.jp