BOILER FURNACE AND BOILER FURNACE WALL PANEL USED IN THE SAME AND HARDENING METHOD OF BOILER FURNACE WALL

To provide a boiler furnace wall panel capable of reducing wear of a boiler furnace wall sufficiently and a boiler furnace including the boiler furnace wall panel, and to provide a hardening method of the boiler furnace wall panel.SOLUTION: A boiler furnace (1) includes a furnace hopper (5), narrowed at a furnace bottom side, at a lower part, and is enclosed by a boiler furnace wall (2) including front and rear walls (21, 22) and left and right side walls (23, 24). The boiler furnace wall (2) in the furnace hopper (5) is formed into a spiral shape by alternately joining heat transfer pipes (31) which extend in a direction inclining relative to a vertical direction and in which a fluid flows and plate-like membrane bars (32) extending in a direction in which the heat transfer pipes (31) extend. Further, in scrambled areas (20A to 20D) between the front and rear walls (21, 22) and the left and right side walls (23, 24), padding parts (30, 30A) to which peening treatment is performed are provided at the side facing an interior of the furnace.SELECTED DRAWING: Figure 4 【課題】ボイラ炉壁の摩耗を十分に軽減することが可能なボイラ炉壁パネルおよびそれを備えるボイラ火炉、ならびにボイラ炉壁パネルの硬化処理方法を提供する。【解決手段】炉底側が絞られた火炉ホッパ（５）を下部に備え、前後壁（２１，２２）および左右側壁（２３，２４）を含むボイラ炉壁（２）により囲まれたボイラ火炉（１）であって、火炉ホッパ（５）におけるボイラ炉壁（２）は、鉛直方向に対して傾斜する方向に延びて内部を流体が流れる伝熱管（３１）と、伝熱管（３１）が延びる方向に延在する板状のメンブレンバー（３２）と、が交互に接合されることにより、スパイラル状に形成されると共に、前後壁（２１，２２）と左右側壁（２３，２４）との取合領域（２０Ａ〜２０Ｄ）には、ピーニング処理が施された肉盛溶接部（３０，３０Ａ）が炉内に面する側に設けられている。【選択図】図４