群馬精工 List of Products and Services

We will introduce forging using thermoplastic discontinuous CFRP. As discontinuous fiber CFRTP, we used flat plates made by cutting unidirectional carbon fiber tape to a specified length and bonding them together, with the aim of clarifying the forming behavior and forming conditions for complex-shaped parts. As a result, the appearance of the formed product is shown in Fig. 6, indicating that filling was achieved up to the upper part of the mold, and a convergence point of the material was observed at the upper part of the lateral hole. 【Forging Forming Conditions】 ■ Upper mold temperature: 180℃ ■ Lower mold temperature: 160℃ ■ Die cushion load: 5kN (material surface pressure 16MPa) ■ Material weight: 45.5g ■ Material temperature: 280℃ ■ Control: Position control *For more details, please refer to the related links or feel free to contact us.

• others

I would like to introduce a case study on the research and development of stainless steel cold forging. In conventional methods, there were issues such as poor material yield and low production capacity, as well as long processing cycle times due to total cutting. With the new technology and methods, cold forging enables near-net shape production, improving material yield and reducing material costs and cutting processing cycle times, resulting in cost reduction. 【Customer Issues with Conventional Methods】 ■ Poor material yield: 40% ■ Low production capacity: 100 to 3,000 pieces/month ■ Long processing cycle times due to total cutting: High component costs *For more details on the case study, you can view it through the related links. For more information, please feel free to download the PDF or contact us.

• others

As a VA/VE case, we will introduce the elimination of the welding process through cold forging. The conventional method of joining two pieces (stamped parts + fully machined parts) by welding has challenges such as high costs, the need for inspections, and limitations on production capacity. The new technology and method of cold forging as a single unit offers benefits such as reduced manufacturing costs due to the elimination of the welding process, improved quality and performance, and increased productivity. 【Customer Challenges with Conventional Method】 ■ Labor involved in the welding process: High costs ■ Stabilization of quality and performance due to the welding process: Inspections required ■ Production lead time due to the welding process: Limitations on production capacity *For detailed information on the case, please refer to the related link. For more details, feel free to download the PDF or contact us.

• others

Let me introduce the benefits of cold forging. When manufacturing parts through cutting processes, cutting from round bars or plate materials can lead to longer processing times. However, by using cold forging to achieve near-net shapes, it can reduce the cutting processing time. Parts that are work-hardened through cold forging have improved strength and increased reliability. Additionally, we can provide a collection of case studies. 【Benefits】 ■ Improved design aesthetics and cost flexibility ■ Elimination of concerns about pressure leaks in hydraulic and pneumatic components, leading to improved quality ■ Cold-forged aluminum parts can also enable brazing, which is difficult with aluminum die-cast parts ■ Parts that are work-hardened through cold forging have increased strength and improved reliability *For more details, please download the PDF or feel free to contact us.

• Hydraulic Equipment
• Pneumatic Equipment
• Other contract services

By forming from billets, it is possible to create products with different plate thicknesses.

• Other Auto Parts

Inner diameter precision and inner diameter surface characteristics + concave shape By combining the ioning method using a hydraulic press for projects that are difficult to achieve with mechanical presses alone, we meet stringent requirements.

• cylinder

For joining two components, such as a long pipe and a flange, welding is a common method; however, we propose integrated forming through cold forging.

• nozzle

With a stroke of 1500mm, our unique vertical 40T hydraulic press can manufacture long parts. We can accommodate both steel and aluminum, so please contact us if you are interested.

• Other Auto Parts

We mainly manufacture and supply transportation equipment parts, OA equipment parts, leisure-related parts, etc., using high-precision cold forging technology. We have established a consistent production system for cold forging that achieves high-quality and high-productivity aluminum processing. We are actively challenging ourselves to create high-precision products that meet the increasingly sophisticated needs of our customers, such as establishing a quality assurance system and reducing total costs. 【Business Description】 ■ Manufacturing and supply of transportation equipment parts, OA equipment parts, leisure-related parts, etc., using high-precision cold forging technology. *For more details, please request materials or view the PDF data available for download.

• Vehicle body parts