キョーワハーツ List of Products and Services

When there is no time from prototype to mass production, please utilize Kyowa Hearts' proposal capabilities, material procurement capabilities, and short delivery response capabilities. For the production of blanks (cut shapes), we select from laser processing (beam diameter 0.03), wire electrical discharge machining, etching processing, and cutting using simple molds, considering precision and quantity. For bending processing, we will use as many of our abundant stock molds as possible to achieve short delivery times and low costs. For more details, please contact us or refer to our catalog.

At Kyo-Wa Hearts, we manufacture products from magnesium alloy sheets through press processing. Die-casting molds and casting equipment are not required. Magnesium alloy products can be made using standard press molds and press machines. We provide product manufacturing that leverages the excellent properties of magnesium alloys.

This document contains know-how for manufacturing products using stainless steel as a spring material. It provides detailed explanations on points regarding the use of stainless steel as spring material, such as "selecting materials based on strength levels" and "determining the feasibility of processing by checking the bending characteristics of the material at the finishing level." Additionally, it introduces joining techniques such as "physical joining" and "welding." We encourage you to read it. [Contents] ■ The basics of stainless steel involve adding chromium to provide corrosion resistance. ■ Material selection is based on strength levels. ■ The feasibility of processing is determined by checking the bending characteristics of the material at the finishing level. ■ Other related technologies. *For more details, please refer to the PDF document or feel free to contact us.

At Kyo-Wa Hearts, we manufacture products using magnesium alloy sheets through press processing. There is no need for die-casting molds or casting equipment. Magnesium alloy products can be made using standard press molds and press machines. We offer product manufacturing that leverages the excellent properties of magnesium alloys. *For more details, please download the PDF or contact us.*

In product development, what measures are necessary to avoid failures as much as possible? First, consider the molds required for the product and carefully think about whether the dimensions and shape of the product will satisfy customer needs. Next, it is essential to scrutinize the information necessary for mold processing and product assembly and accurately convey it to the responsible engineers. In other words, detailed specifications, design drawings, and mold blueprints are required. It goes without saying that it is important to place orders with vendors who have extensive experience in prototype production and possess a wealth of know-how. *For more details, please download the PDF or contact us.*

"MagClean" is a product that utilizes the excellent antibacterial properties of silver and a lightweight magnesium alloy. It is useful in various situations from leaving home to returning, as it can be used to touch items such as train handrails, handrails, elevator buttons, vending machine buttons, doorknobs, and thumbturns, acting as a substitute for hands. Additionally, leveraging the ultra-lightweight characteristics of magnesium, we have created a product so light that you might forget you have it in your pocket while out. 【Features】 ■ Touchless ■ Touches various items that many people come into contact with while out, acting as a substitute for hands ■ Useful in various situations from leaving home to returning ■ Incorporates our technology to realize outstanding features and excellent performance * A PDF is available that explains the "Utilization Technology of Magnesium Alloys" and "Coating Technology that Exhibits Antibacterial Effects"! * For more details, please refer to the PDF document or feel free to contact us.

"Designing Springs and Material Selection That You Can't Ask Now" is a document created by our company, which specializes in processing leaf springs, based on our know-how regarding the properties of materials. It introduces the key points for material selection, including the necessary elements and the selection process based on mechanical properties. This document is useful for situations such as, "I have inherited past drawings, but I don't know how to make the necessary springs," or "I don't know what criteria to use for selecting materials." 【Contents】 ■ Elements necessary for material selection ■ Selection process based on mechanical property data ■ Characteristic values of representative materials *You can view it immediately via PDF download. Please feel free to consult us about prototypes or material selection based on drawings or some parts.

This is a collection of solution case studies from Kyo-Wa Hearts Co., Ltd., which handles precision and fine pressing, leaf spring processing, and everything from prototypes to mass production. It includes information on various connection terminals, examples of small diameter drawing, and key points for mold manufacturing. Additionally, the Q&A section answers frequently asked questions such as "About good contractors" and "Materials that can be processed." 【Included Items】 ■ Proof of stable product quality ■ Examples of small diameter drawing processing ■ Fine bending and punching products ■ Q&A Frequently Asked Questions *For more details, please refer to the PDF materials or feel free to contact us.

"What are the functions of the parts required by the customer? Where is precision truly needed?" We will ask the customer's design representatives and our sales representatives will propose and consult on the machining characteristics and limits of the materials to be processed. *For more details, please download the PDF or contact us.*

It is not uncommon for mild, stain-like substances that are difficult to classify as rust to occur. To prevent these defects from arising in our products, we proceed with our work while keeping in mind the characteristics that lead to rust. This document introduces the conditions and environments under which various metals rust. We have succinctly summarized the conditions and environments that induce rust in various metal materials. Through the accumulation of knowledge and experience, we are well-versed not only in press processing technology but also in metal materials. Our team consists of professionals in metal processing. Would you like to solve your metal processing concerns together with us? Please feel free to contact us! *For more details, please download the PDF or contact us.*

At this point, metal products are making significant contributions to the 17 themes of the SDGs. This document includes a table presenting the theme "Contribution of Steel to the SDGs" from the World Steel Association, an international industry organization for the steel industry. It shows the themes contributing to each of the SDG principles. By comparing the principles and themes, one can understand how the physical properties of steel materials contribute to the SDGs. Additionally, it discusses the use of human-friendly metal materials. We encourage you to read it. [Contents] ■ Table 1 "Contribution of Steel to the SDGs" ■ Use of metals contributing to the SDGs ■ Table 2 Current status and characteristics comparison of antimicrobial metal materials *For more details, please refer to the PDF document or feel free to contact us.

Kyo-Wa Hearts Co., Ltd. accepts "express prototypes" and contributes to accelerating our customers' development speed from prototyping to mass production. In particular, we specialize in the production of thin sheet spring products, which are difficult to simulate in terms of springiness, sliding properties, and durability. Additionally, when you request a prototype of a flat spring, we can quickly transfer data thanks to our rich variety of acceptance formats. Please feel free to contact us. [Production Details (Partial)] ■ Usable sizes: from grain of rice to palm-sized ■ Lot sizes - Handmade prototypes: approximately 1 to 100 pieces - Mass production: 10,000 to over 1 million pieces *For more details, please download the PDF or feel free to contact us.