キョーワハーツ List of Products and Services

The mold is broken! The dimensions are unstable! Burrs and dents won't settle down! I want to modify the mold! Kyowa Hearts will utilize the technology and experience we have cultivated so far, and with passion, we will meet our customers' expectations. There are no issues with manufacturing from other companies or overseas production. We also respond to requests such as "There are no mold drawings" or "The cause of defects is unclear." If you are in a hurry or cannot incur new costs, please feel free to consult with us. Our experienced staff will assist you. If you send us the mold, we will provide a quote by the end of the day following its arrival. Furthermore, it is also possible to carry out pressing for the first lot and deliver it simultaneously. *For more details, please contact us or refer to our catalog.

This is a collection of case studies from Kyowa Hearts that solves various challenges such as weight reduction, long lifespan, miniaturization, assembly labor saving, fine precision, and process reduction. [Contents] - Integrated molding of resin and magnesium - Dissimilar material joining through precision drawing and laser sealing (SUS, copper, aluminum, etc.) - Small diameter drawing processing of brass LED parts with an inner diameter of φ0.7 - Roundness of 0.03, complex bending of phosphor bronze (curling diameter 2.3) - Skillfully achieving concentricity and coaxiality! Complex-shaped antenna elements - Corner tube drawing with progressive dies, processing of notches and dowels within the mold, etc. ● For more details, please download the catalog 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.

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 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.

"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.

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.*

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.*

This document is a compilation by our company, which specializes in precision mold design and manufacturing, regarding the causes and countermeasures for mold wear that occurs during mass production. To prevent situations such as "we need to regrind or modify various parts after entering mass production, resulting in unexpected cost increases," we provide essential information explained by troubles and mold materials. Countermeasures are also introduced, making the content useful for practical applications. 【Main Contents】 ■ Causes of poor mold durability ■ Seizing phenomena ■ Adhesive wear of stainless steel ■ Adhesive wear of titanium ■ Wear countermeasures (utilization of water-soluble lubricants, material selection), etc. *Detailed content can be viewed immediately via "PDF Download."

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.*