Manufacturing method of wide-breadth carbonized board

The invention discloses a manufacturing method of a wide-breadth carbonized board, which comprises the following steps: A. material preparing; B. tenoning; C. lengthwise and widthwise splicing; D. sanding and edge cutting on a board blank ; E, hot-press densification treatment on the board blank; F. carbonizing treatment. The manufacturing method of a finger joint laminated board, provided by the invention, is simple in technology; the finger joint laminated board manufactured according to the method has high structural strength, good stability and low adhesive consumption.