| 摘要 |
PURPOSE: A formability test device for a precoated color steel sheet is provided to prevent damage to a precoated color steel sheet due to an excessive external force when pressing the precoated color steel sheet and thus to reduce a processing failure rate. CONSTITUTION: A formability test device for a precoated color steel sheet comprises a lower member(110), a mounting member(120), an upper member(130), and a control unit. The lower member comprises a base part(111), a plurality of protrusions(112) formed in a square column shape on the top of the base part, and a supporting part(113). The mounting member is coupled to the supporting part of the lower member and moved up and down relative to the lower member, and the mounting member has a plurality of through holes(121) through which the protrusions are inserted when moved up and down relative to the lower member. A precoated color steel sheet to be tested is mounted on the mounting member. The upper member is arranged to vertically move above the mounting member and contacts the precoated color steel sheet when testing the formability of the precoated color steel sheet mounted on the mounting member. The control unit moves the protrusions by a constant distance toward the precoated color steel sheet when testing the formability of the precoated color steel sheet.
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