Clad material manufacturing apparatus and clad material manufacturing method

The apparatus and method extend heating duration and clean bonding surfaces to facilitate complete diffusion bonding of ultra-thin metal strips, addressing incomplete bonding and intermetallic compound formation in existing technologies, resulting in stronger metal connections.

JP7875527B2Active Publication Date: 2026-06-18S S ALLOY +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
S S ALLOY
Filing Date
2022-06-21
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing methods for diffusion bonding of ultra-thin metal strips face challenges due to short heating and pressurization times, leading to incomplete bonding and potential formation of fragile intermetallic compounds at the bonding interface, primarily because heating and pressurization are limited to a single point and the bonding surface may have oxide films.

⚗Method used

A clad material manufacturing apparatus and method that uses a pair of pressure rollers to apply current across a wide area, maintaining heating for a longer duration by controlling the feed speed and using plasma etching to clean bonding surfaces, ensuring complete diffusion bonding with metallurgically strong joints.

🎯Benefits of technology

Enables extended diffusion of atoms across the bonding interface, forming metallurgically complete bonds without brittle intermetallic compounds, by applying current over a wider area and maintaining heating for a longer period, thus achieving stronger metal strip connections.

✦ Generated by Eureka AI based on patent content.
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Abstract

To provide cladded material manufacturing equipment and a cladded material manufacturing method, each materialization of manufacture of cladded material by diffusion joining.SOLUTION: Cladded material manufacturing equipment is provided, comprising: a pair of first pressurization rollers which sandwich a plurality of metal strips in the vertical direction to pressurize them; and a pair of second pressurization rollers which are arranged on the downstream side of the first pressurization rollers with prescribed intervals between the first and the second pressurization rollers and pressurize the laminated metal strips which are formed by being sandwiched and laminated. One of the upper and lower pressurization rollers of the pair of first pressurization rollers is used as a roller electrode connected to an electric power source circuit and the other is as the insulation side roller in the insulated state from the electric power source circuit. The roller electrode and the insulation side roller of the pair of second pressurization rollers have the reverse configuration in the vertical direction with respect to the laminated metal strips from the roller electrode and the insulation side roller of the first pressurization rollers. A cladded material manufacturing method is provided in which a joint surface of the laminated metal strips is heated by causing the electric current to flow between the upper surface contacting one roller electrode of the laminated metal strips and the lower surface contacting the other roller electrode.SELECTED DRAWING: Figure 1
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