It was published in the specialized magazine "Press Technology June issue."

This time, we will focus on stamping processes and explain a simple method for selecting materials suitable for stamping for designers.

Rational material selection enables the design of products that are easy to manufacture, leading to reduced costs due to fewer processes, improved productivity during mass production, and enhanced reliability and durability of the products. Designs with high forming difficulty will increase material and processing costs. Indicators of material properties for evaluating materials suitable for stamping include tensile strength, yield strength, elongation, hardness, Erichsen value, limiting drawing ratio, and conical cup value. However, two specific characteristic values that can directly evaluate formability are as follows: 1. The n-value representing work hardening characteristics 2. The r-value (Rankford value) representing anisotropy The n-value and r-value are characteristic values that directly relate to the quality of actual stamping processes, and this evaluation allows for the selection of appropriate materials. *For more details, please download the PDF or contact us.*

• Contract manufacturing

This document explains the key points of material selection.

In the process of spring design, once the stress level of the required material is determined, it is necessary to select a material that possesses those characteristics, and an understanding of the properties of the material is crucial. Table of Contents 1. Elements necessary for material selection 2. Mechanical property data by material 3. [For reference] Mechanical properties of stainless spring materials according to JIS standards *For more details, please download the PDF or contact us.

• Circuit board design and manufacturing

This is a collection of examples of drawing processes manufactured with progressive drawing dies using automatic press processing! Shall we solve your problems with drawing processes together?

A drawing die refers to a type of mold used in a processing method that creates various shapes of bottomed containers, such as cylinders, rectangular tubes, and cones, from a single thin sheet of metal. A characteristic feature of the formed products is that they have no seams. It is said to be the highest level of press processing. We would like to introduce a case study using our progressive die that has actually solved customer problems! Our products are primarily made using automatic press processing, ensuring stable quality, cost performance, and short delivery times, allowing us to meet customer demands. Please feel free to download it.

• fuse

As one of the challenges in new processing technologies, we are working on progressive deep drawing.

As one of the challenges in new processing technologies, we are working on progressive die stamping. This allows us to respond to the expansion of our customers' development designs by offering stamping processing for items that require strength, in addition to traditional curling techniques. We conduct consistent production from mold design with responsibility, maintaining top-level precision and longevity of our products. For more details, please contact us or refer to our catalog.

• Processing Contract

This is an introduction to a product with a narrowing from the tip to the neck, featuring an inner diameter of Φ0.7.

This is an introduction to a product with a taper from the tip to the neck, featuring an inner diameter of Φ0.7. The product has a thickness of 0.64, a height of 4.5, an inner diameter of φ0.7, and is made of brass, intended for use in LED-related components. Kyowa Hearts specializes in processing thin, small, and fine plate springs, from handmade prototypes to precision press processing using precision progressive molds. We are particularly skilled in the production of compact plate springs for mobile phones, computers, and connector parts. For more details, please contact us or refer to our catalog.

• Other machine elements

In public construction civil engineering sites, there are many instances where sheets are used as common temporary facilities, such as construction roads, access roads, heavy machinery work yards, material storage areas, and worker pathways. Traditionally, steel plates were common, but due to their weight, transportation and installation can be cumbersome. Hyper CLT sheets are civil engineering materials made from wooden CLT for civil engineering use. The 5×10 sheet weighs about 230 kg, and the 5×20 sheet weighs about 460 kg, making them lightweight and easy to transport, install, and remove, even with small machinery. They can be widely utilized for temporary roads, heavy machinery scaffolding, pathways within the site, and protection of material storage in public works. Since they are made of wood, they also contribute to environmental aspects such as reducing summer heat reflection, lowering noise, and fixing CO2. They can simultaneously address construction efficiency, safety measures, and environmental considerations, making them effective for innovative proposals in public works. Furthermore, they improve transportation efficiency and reduce labor in site operations as an alternative to steel plates. Hyper CLT sheets are registered technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS "TH-250021-A." They are recommended for companies considering civil engineering, civil engineering use, and civil engineering CLT. Feel free to request materials or consult about implementation. They are temporary materials that also help improve site evaluations in public works. Please consider them.

We have released a new video on our company’s YouTube channel. The theme of this video is "The World of Amino Acid-Based Shampoos." Amino acid-based shampoos have become popular in recent years, but the lather, feel, and finish can vary greatly depending on the cleansing ingredients used. In this video, we clearly explain the changes in user experience based on the differences in cleansing ingredients by comparing two types of amino acid-based shampoos. We hope you can use this as a hint for developing original shampoos and differentiation.

New York and Tokyo, June 26, 2026 - (JCN Newswire) - This year's successful listing of PayPay Corporation (hereinafter "PayPay") on NASDAQ has provided a significant boost. The question now facing Japan's leading innovation companies is no longer "Is a U.S. listing feasible?" but rather "How can we attract global capital and build companies that align with global growth strategies?" The 2nd Japan Go IPO Summit will be held on September 16, 2026, at the Grand Hyatt Tokyo to address this question. This summit is hosted by MarcumAsia and organized by AUM Advisors. To register for this invitation-only event, please apply here: Japan GO IPO Summit Attendee Information https://events.marcumasia.com/view.php?id=32

Our company representative, Shibata, will be speaking as a lecturer at the "Mikata Project" AI Utilization Seminar for the automotive industry, hosted by the Chubu Bureau of Economy, Trade and Industry. ■ Title: AI Implementation Course Leading to Results - Learning Success Patterns and Practical Processes from Real Examples in Manufacturing Sites "We implemented AI, but it is not being used on-site and is left unattended" and "The implementation has become the goal without yielding results" - we have seen many such stumbling blocks in manufacturing sites. In the seminar, based on real examples, we will discuss common patterns for successful implementation that lead to results, pitfalls to avoid, and practical processes to ensure AI is continuously used. We will also propose specific measures for sites struggling with technology transfer and dependency on individuals. ■ Event Overview Date: July 3, 2026 (Friday) 13:30 - 16:00 Venue: TKP Meitetsu Nagoya Station Conference Center + Online Participation Fee: Free / Application Deadline: June 30 (Tuesday) Organizer: Chubu Bureau of Economy, Trade and Industry (Automotive Industry "Mikata Project") Co-presenter: Satoru Hayami, Waseda University For details and registration, please visit the official page of the Chubu Bureau of Economy, Trade and Industry. If you are struggling with AI implementation in manufacturing sites, please feel free to consult us, regardless of region or industry.

July 16 (Thursday) 10:00 AM - 6:00 PM Venue: Convex Okayama Small Exhibition Hall