ナミテイ List of Products and Services

※Automotive World Nagoya 2025 Exhibition Content We make it possible to create parts that were difficult with conventional press processing by utilizing irregular shapes. With a high degree of freedom in shape, we offer optimal proposals tailored to customer needs from the design stage. 【Examples of processing made possible by our technology】 　Thickness and shape: High design freedom in cross-sectional shape allows for lightweight parts and strength optimization. 　Grooves and uneven shapes: Uniform and high-precision grooves and complex three-dimensional shapes can be formed in one piece. 　Composite R shapes: Smooth curves and continuous complex curvatures can be handled freely. 　Notch shapes: Notches can also be accommodated without cutting. Additionally, the new press parts enable waste-free production by pursuing manufacturing efficiency from the design stage. Specifically, the following effects can be expected: 【Environmentally friendly and efficient manufacturing process】 　(1) Shortening of manufacturing processes 　(2) Reduction of material waste 　(3) Reduction of labor and effort 　(4) Minimization of energy consumption

※Automotive World Nagoya 2025 Exhibition Content Our unique shearing technology allows for continuous and high-precision cutting from irregular coils. The flatness of the cutting surface is excellent, and the occurrence of warping and burrs is extremely low, which means that in some cases, the cut pieces can be used directly as components. 【What Fine Cut Can Achieve】 　◆ Process Simplification: Due to the superior flatness of the cutting surface, post-processing (barreling, machining) can be omitted or made more efficient. 　◆ Continuous Production: High mass production capability through continuous cutting from coils. 　◆ Dimensional Accuracy: 　　　　　　　　- Minimal warping results in high length accuracy. 　　　　　　　　- High length accuracy enables stable unit weights. *Examples of use: Slag, weights, etc. 　◆ Method Switching: Achieves switching to fine cut for sintered parts, pressed parts, and former parts. *Alternative parts for sintering and pressing. 　◆ Environmental Consideration: By achieving omissions and efficiency through process simplification, continuous production, and method switching, we can engage in environmentally conscious manufacturing.

※Automotive World Nagoya 2025 Exhibition Content This is a unique solution that utilizes cold forging technology with irregular wire materials to create complex shapes with high precision. It can accommodate both iron-based and copper-based materials, achieving a transition from pressing and cutting methods. We have a proven track record across a wide range of industries, from automotive parts to construction and building materials. 【Capabilities of Irregular Forged Parts】 - Achieves near-net shape, reducing machining and labor costs (cutting-free parts) - Realizes shapes that are difficult to produce with pressing (press alternative parts) - High strength and durability through plastic processing → Example: Parts stronger than those produced by sintering can be manufactured (sintering alternative parts) - Simultaneously achieves cost reduction and quality stabilization through method changes (VA parts or high value-added parts) 【Processing Example】 Cutting of irregular wire → End face correction → C chamfering → Precision adjustment → Completion

General enamel wire (round cross-section) has a filling factor of about 40%, and flat wire has a filling factor of 50-60%. However, ultra-deformed wire has been developed to achieve over 80%. By gradually changing the thickness and width of the flat cross-section without altering the cross-sectional area, it is a special shaped wire that changes its cross-sectional shape along its length. When this wire is wound onto a stator core, a tapered stator coil is completed. When this stator coil is placed in a motor, it fills the gaps between the stator cores, making it possible to achieve a high filling factor. It is also possible to reduce the gaps between the stator coils and apply it to miniaturization, depending on the design. This is a new magnet wire that contributes to the development of high-performance motors with high output, high efficiency, compact size, and lightweight! ● For winding processing, initial samples are available. *Depends on coil specifications. ● For insulation coating, initial samples are available. *Depends on coating specifications. *For more details, please refer to the related links or feel free to contact us.

In order to mass-produce copper components implemented in the base, we propose improvements in "material yield," "reduction of mold costs," "quality stability," and "productivity enhancement" by processing special-shaped wire as the material. (1) Improvement of material yield - In the pressing process, scrap is generated around the product, but by processing special-shaped wire as the material, it is possible to significantly reduce scrap. (2) No need for progressive molds as parts can be mass-produced through cutting and bending processes - If short-length cuts are used, cutting blades can be employed, and for bending, processing can be done with bending jigs, thus reducing initial investments such as progressive molds. (3) Quality stability - Continuous processing of already precisely finished special-shaped wire alleviates variations in each shot. (4) Productivity enhancement - By using long special-shaped wire (500-1,000 kg) as the material, continuous productivity is improved. *Regarding the processing steps for components combined with special-shaped wire (cutting, pressing, forming, bending), we would like to determine this through discussions with the customer, our company, or partners. *For more details, please feel free to contact us.

【What is a Special-Shaped Wire】 It is a wire product that has been processed into various shapes according to customer requirements, rather than the typical cross-sectional shapes like round, square, or hexagonal. By incorporating functionality into the material itself, it can accommodate applications that conventional round or square wires cannot. 【What Can Be Achieved with Special-Shaped Wire】 ◆ Optimal Design 1. Switching Construction Methods - Bringing the cross-section closer to the final product, reducing machining and labor (such as eliminating cutting) - Achieving shapes that are difficult to realize with pressing (press alternative parts) - Manufacturing parts with higher strength than sintered parts (sintering alternative parts) 2. Weight Reduction - Reducing cross-sectional area to achieve lightweight design 3. Increased Surface Area - Expanding surface area in the longitudinal direction, improving heat dissipation, adhesion, and strength 4. Control of Surface Properties - Achieving anti-slip, adhesion, vibration absorption, and heat dissipation effects through surface roughening or uneven processing ◆ Productivity 1. Mass Production Capability - Improving efficiency through continuous production from special-shaped coils 2. Near-Net Shape - Bringing the material closer to the final shape at the material stage, achieving process simplification and labor reduction ◆ Environmental Consideration - By reducing waste through free design and high production efficiency, and achieving process simplification and labor-saving, environmentally friendly manufacturing is made possible.

Our company has been producing copper terminal components for EVs for over 10 years, and we have established a quality assurance system that includes a production system utilizing cold forging formers and machining, as well as complete inspection, cleaning, and vacuum packaging. Furthermore, we can also manufacture irregular terminals using our specialty in irregular wire, allowing us to broadly meet the increasing demand for copper terminals and components due to the rise of EVs. 【Features】 ■ Over 10 years of manufacturing know-how for iron cores and contacts ■ Introduction of high-performance cold forging formers ■ Realization of machining-free copper terminal components ■ Cost-effective solutions available ■ High-quality assurance system in place due to vacuum packaging ■ Capability to manufacture irregular shapes