Metal Stamping Technology for Fine, Precise, and Complex Shapes

Kyowa Hearts Co., Ltd.

Micro complex precision metal stamping products

Mass production of micro complex precision metal parts for medical and electronic devices using die manufacturing and progressive stamping

Kyowa Hearts is a “development proposal-type” company that meets customer needs swiftly and flexibly by providing a comprehensive range of services from prototype development to die design and manufacturing, material selection, and production processing.

In addition to the development of magnesium alloy stamping technology, the company specializes in the processing of titanium, nickel alloys, and memory alloys and offers a wealth of technical expertise through a track record of fine, complex, and precision stamping examples.

Kyowa Hearts leverages its “four strengths” (ability to make innovative proposals, technical expertise, imaginative power, and problem-solving skills) to solve various challenges, earning high praise from many of its customers.

Precision stamping dies and stamping

Delivering the stamping of mm-sized metal products with µm-level accuracy

To precisely process spring components and thin sheet materials that require minimal stress, Kyowa Hearts leverages its know-how based on extensive experience in die accuracy, surface smoothness, lubrication technology, and temperature management. In ultra-small processes such as tiny cutting, bending, and punching, high-precision processing technology is essential, considering the processing steps, material orientation, and processing characteristics of the material.

Moreover, pursuing thinness requires high adaptability, with techniques to achieve pitch, accuracy, and roundness of components, as well as advanced die assembly precision. Prototyping is also crucial for advanced product development, allowing for the evaluation of component characteristics in the early stages and anticipating potential future issues. Kyowa Hearts strives to be a valuable development partner for its customers.

Stamping process of AZ31B magnesium alloy

Magnesium alloy stamping technology

Magnesium alloys are typically productized by processing methods such as casting, thixomolding, extrusion, and bending. However, in stamping, which is the most common molding method in metalworking, magnesium has rarely been used due to its poor plastic processing ability at room temperature. Kyowa Hearts has made this possible by using the commercially available AZ31B magnesium alloy and its independently developed technology.

By utilizing magnesium alloys, the lightest of all practical metals, Kyowa Hearts aims to promote products that contribute to the SDGs. Additionally, the company is collaborating on practical application research to develop high-strength magnesium alloys with excellent room-temperature workability, striving to offer these new materials to its customers as soon as they are available.

Kyowa Hearts handles the stamping of mm-sized metal products with µm-level accuracy

Providing precision metal parts for electronic and electrical components, medical devices, automotive electrical components, and precision machinery

Utilizing its in-house facilities, Kyowa Hearts offers flexible support for product development tailored to its customers' needs, from the production of a single prototype to the selection of metal materials and structural design. Additionally, during the mass production phase, the company is capable of producing over one million units with progressive stamping using high-precision, state-of-the-art machinery.

With "micro," "precision," "complexity," and "springs" as keywords, Kyowa Hearts handles the stamping of mm-sized metal products with µm-level accuracy.

Equipped with a large number of the latest visual inspection devices and physical property testing machines, the company ensures complete quality control to provide customers with peace of mind.

URL (Japanese):https://www.kyowa-hearts.com

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