Research, development, testing, and evaluation of fastener products.
R&D Center
Through research and development, we are striving to improve the safety, performance, and quality of our screw products!
Mechanical structures such as automobiles, home appliances, and buildings are assembled by joining multiple parts together. Therefore, joining is common across all industries and is the most fundamental technology for maintaining performance and quality. Joining can be broadly classified into welding through the melting and solidification of metals, chemical adhesion, and mechanical fastening through screws. Each of these methods has many advantages and is an important joining technique, but the only method that allows for high strength and the possibility of disassembly and reuse is mechanical fastening with screws, which is also considered to play an important role in today's environmental issues. Screws are a representative mechanical component that was standardized by ISO early on as a key element of globalization and are widely distributed in the market; however, there are significant differences in safety, performance, and quality among manufacturers. Through diligent research activities to meet users' needs for screw fastening, we are committed to improving the safety, performance, and quality of screw products.
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basic information
Research and development of screw products includes "research on screw fastening performance" and "research on manufacturing methods." In various bolted joint structures in mechanical structures such as transportation machinery, the safety, performance, and quality required for fastening components vary, so we conduct research and development on strength, fastening (tightening and loosening), and design methods as part of "research on screw fastening performance." On the other hand, in "research and development on manufacturing methods for screw products" that incorporates safety, performance, and quality, we conduct research and development on issues related to plastic processing such as multi-stage forging die design and tribology, as well as heat treatment, materials, and surface treatment. - Research on screw fastening performance - - Strength of screw products - Fastening of screw products (tightening and loosening) - Strength design of screw joints - Research on manufacturing methods for screw products - - Plastic processing (forging, tribology) - Heat treatment - Materials - Surface treatment
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Delivery Time
※It depends on the evaluation test content, so please feel free to contact us.
Applications/Examples of results
○ Creep Testing Machine 【Purpose of the Device】 Evaluation of loosening due to thermal creep in bolt and nut products ○ Automatic Centering Static Tensile Testing Device 【Purpose of the Device】 Static strength evaluation of screw products ○ Fatigue Testing Device for Screw Products 【Purpose of the Device】 Dynamic strength evaluation of screw products ○ Stress Corrosion Cracking Testing Device for Bolt Products 【Purpose of the Device】 Evaluation of stress corrosion cracking susceptibility in austenitic stainless steel and aluminum alloy bolt products ○ Tightening Testing Device for Screw Products 【Purpose of the Device】 Evaluation of tightening characteristics of screw products ○ Tightening Testing Device for Multiple Bolt Assemblies 【Purpose of the Device】 Optimization of tightening methods (torque method, rotation angle method, torque gradient method) for multiple bolt assemblies ○ Axial Perpendicular Vibration Loosening Testing Device for Screw Products (Yunker-type Vibration Testing Machine) 【Purpose of the Device】 Quantitative evaluation of loosening characteristics of locking screw products ○ Forging FEM Simulation 【Purpose of the Device】 Evaluation of formability
Detailed information
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Creep Testing Machine Equipment 【Inspection Items】 Thermal creep characteristics of bolt products Thermal creep characteristics of new materials
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![b-048[1].jpg](https://image.www.ipros.com/public/product/image_diagram/2a6/467233/IPROS78652665155623456718.jpeg?w=140&h=140)
Automatic centering static tensile testing device 【Purpose of the device】 Dynamic strength evaluation of screw products 【Inspection items】 - Tensile strength - 0.2% yield strength (yield point) - Compliance
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![b-049[1].jpg](https://image.www.ipros.com/public/product/image_diagram/ea9/467234/IPROS10485611132842257943.jpeg?w=140&h=140)
Fatigue Testing Device for Screw Products 【Purpose of the Device】 Dynamic strength evaluation of screw products 【Inspection Items】 - Fatigue limit - Others
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![b-050[1].jpg](https://image.www.ipros.com/public/product/image_diagram/460/467235/IPROS82675901559396341748.jpeg?w=140&h=140)
Stress Corrosion Cracking Test Equipment for Bolt Products 【Purpose of the Equipment】 Evaluation of stress corrosion cracking susceptibility of austenitic stainless steel and aluminum alloy bolt products 【Inspection Items】 - Evaluation of stress corrosion cracking life using constant load or constant strain tests with alternating immersion method or continuous immersion method - Evaluation of crack growth rate using constant load or constant strain tests with alternating immersion method or continuous immersion method - Others
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![b-051[1].jpg](https://image.www.ipros.com/public/product/image_diagram/c0e/467236/IPROS95648322922918397535.jpeg?w=140&h=140)
Screw product tightening test device 【Purpose of the device】 Evaluation of tightening characteristics of screw products 【Inspection items】 - Relationship curve of tightening rotation angle - tightening torque - tightening axial force - Tightening characteristic values Friction coefficients of screw surfaces and seating surfaces, yield tightening axial force, etc. - Others
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![b-052[1].jpg](https://image.www.ipros.com/public/product/image_diagram/1ad/467237/IPROS34036991281304593733.jpeg?w=140&h=140)
Tightening Test Device for Multiple Bolt Fastenings 【Purpose of the Device】 Optimization of tightening using torque method, rotation angle method, and torque gradient method for multiple bolt fastenings 【Inspection Items】 - Relationship curve of tightening rotation angle - tightening torque - tightening axial force for multiple bolt fastenings - Tightening axial force of each bolt in multiple bolt fastenings - Others
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![b-053[1].jpg](https://image.www.ipros.com/public/product/image_diagram/ed3/467238/IPROS09821210735838433552.jpeg?w=140&h=140)
Screw Product Axial Right Angle Vibration Loosening Test Device 【Purpose of the Device】 Quantitative evaluation of loosening characteristics of locking screws 【Inspection Items】 - Loosening limit amplitude - Bending fatigue of bolt products - Others
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Salt spray test machine 【Purpose of the device】 Corrosion resistance evaluation
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Fluorescent X-ray Analyzer 【Purpose of the Device】 Component analysis evaluation
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![Basics of Screw Manufacturing Technology [Forging Edition] Part 2 of First Industrial's Screw Manufacturing Technology "Forging Process of Nuts and Collars"](https://image.www.ipros.com/public/catalog/image/01/051/668229/IPROS11732215215474012195.jpeg?w=120&h=170)
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Company information
Connecting things to things. We propose the optimal fastening solutions to meet our customers' needs. Behind this proposal capability lies our technical expertise to analyze and evaluate everything from materials to fasteners, our development and manufacturing capabilities to design and produce both bolts and nuts, and our procurement strength with partnerships with 200 cooperating manufacturers. Through the small component of screws, we contribute to the development of various industries. At Daiichi Kogyo, we manufacture both bolts and nuts. Although they are both "screws," the manufacturing processes, equipment, and materials for bolts and nuts are different. We possess the processing equipment and know-how for both. With 60 years of experience in screw manufacturing, as a specialized group that produces both bolts and nuts, we leverage our accumulated know-how to provide the bolts and nuts that our customers need.