【正文】 從龍骨板的下邊緣向上Up from keel plate lower edge. 14 焊接 Welding 預(yù)熱溫度限定按表1115。Deviation of draft and freeboard mark is to be kept within the limits as defined in table 1114 Table 1114 mm分類Classify 項目Items 標準范圍Standard 允許極限limits備注Remarks 吃水標尺Draft mark相對于直尺或樣板的偏差Deviation regard to the straight ruler and shaping plate177。20177。15177。％B—B……設(shè)計型寬B……designed moulded breadth型深Moulded length 177。10—垂直線（肋位線上下重合度）Vertical line（frame lines superposition upper and lower）177。15包括艏樓、艉樓、桅室Including forecastle，poop， mast room高度Height 177。12高度Height 177。5—指舷側(cè)外的肋位，按雙層底上找正的肋位線為準Frame of the over shell should be based on centering frame line of double bottom 型寬尺寸（甲板處）Dimension of molded breadth（at deck ）177。6177。10177。6177。5177。5177。4177。3177。2177。2177。8Length of subassemblyFlat 177。 Heating is to be proceeded according to the requirement as defined in table 1111. Table 1111 mm項目Items 標準范圍Standard 允許極限limits 備 注Remarks 表面最高加熱溫度Maximum heating temperature on surface 高強度鋼Ceq＞%High tensile steelCeq＞%加熱后立即水冷時Water cooling immediately after heating 650℃以下Under 650℃650℃碳當量計算公式+Calculation equation for carbon equivalent +加熱后空氣冷卻時Air cooling immediately after heating900℃以下Under 900℃900℃加熱后空氣冷卻后再水冷卻時Air cooling and subsequent water cooling after heating900℃以下空冷下降到500℃以下水冷Air cooling under 900℃, water cooling started when temp. below 500℃900℃空冷500℃水冷900℃(aiecooled)500℃(watercooled)高強度鋼Ceq≤%AH、DH級High tensile steelCeq≤%AH、DH加熱后立即水冷卻或空氣冷卻時Water or air cooling immediately after heating 1000℃以下Under 1000℃1000℃1. 2. 11 裝配1. Fixing and assembling 裝配偏差按表1112。直線邊緣Edge of straight ≤≤曲線邊緣Edge of curve≤≤ 外板彎曲偏差按表1110。構(gòu)件寬度Breadth of members 177。177。以10m長計，相對樣板Per10min length，pared with template面板傾斜度δ2（b以100計）Inclination of face plateδ2（bper100）177。局部彎曲偏差(以1m長計，相對樣板)Deviation of local bending (per 1min length，pared with template )177。每檔肋距內(nèi)Within each frame spacing肋位方向與樣箱的空隙Gap between plate and box template in breadthwise direction ≤≤邊緣皺折Flange of edge177。 as max177。177。波型板Corrugate plate波高 hDepth of corrugation h177。band ≥折邊方向的直線度（以每10m計）Straightness in the plane of flange （per 10m）≤10≤25腹板方向的直線度（以每10m計）Straightness in the plate of web（per10m）≤10≤25Forming plate槽型板Channel plate槽的深度hDepth of slot, h177。次要構(gòu)件Secondary members 177。 Deviation of forming is to be kept within the limits as defined in table 119.Table 119 mm分類Classify 加 工Forming 項目Items 標準范圍Standard 允許極限limits 備 注Remarks 折 邊Flange折邊寬度bBreadth of flange b177。2176。面板寬度、肋板高度Breadth of face bar, height of floor 177。 Deviation of sheering dimension is to be kept within the limits as defined in table117. Table 117 mm項 目Items 標準范圍Standard 允許極限limits 備 注Remarks 構(gòu)件長度Length of member177。1 .2 .5 Gas cutting edge grinding standard as in table 116.Table 116 mm項 目Items 要 求Requirement 備 注Remarks 在經(jīng)以下部位氣割邊緣打磨到“1G”，壓載水艙、艏艉尖艙、貨艙（油艙）露天甲板、海水箱Gas cutting edge grinding up to “1G”, in the area as follow: water ballast, fore/peak tank, cargo (oil hold) hold exposed deck and sea chest1G）1mm177。例：雙層底肋板、桁材等要求較高的構(gòu)件For example：For members with high accuracy demand such as floors and grinder, etc. In double bottom 次要構(gòu)件Secondary members 177。坡口深度dDepth of groove, d177。177。 extremely important longitudinals and cantilever beams —無缺口No notch 1. “缺口”是指大于該表面粗糙度3倍的凹口。 Deviation of marking dimension of block structure is to be kept within the limits as defined in table 114表114Table 114 mm項 目Items 標準范圍Standard 允許極限limits 備 注Remarks 平面分段劃線與圖樣尺寸的偏差Deviation of marking line of panel block, pared with designed dimension 177。177。177。Surface inspection and trim of marine steel should be carried out according to relative regulations on steel plates1. 2 .2 下料及劃線1. 2 .2 Cuttings and marking 下料及劃線的偏差按表113。The measurement of thickness of steel plates should be taken at these places: no more than 100mm from top corner and no more than 40mm from the edge of steel plate. Four corners and middle of horizontal side of the steel plates are essential parts to be measured. Negative thickness tolerance for steel plates surveyed from any measured point should not more than that defined in table 112.表112 Table 112 mm項 目Items 要 求Requirement 船體結(jié)構(gòu)鋼板厚度負公差Negative thickness tolerance for steel plates of hull construction as max.. 1. 3 缺陷面積的計算. 1. 3 Calculation for defect area 缺陷面積是指距離邊緣50mm范圍內(nèi)的影響區(qū)面積，見圖1和2。For other members: 300mm or 10 times plate thickness, whichever greater.The whole plate must be replaced in case the lamination is extremely severe and extensive.鑄鋼缺陷Casting steel defect 表面缺陷Surface defect缺陷深度為厚度的20％或深度為25mm以上及長度為150mm以上的鑄鋼件缺陷In case the depth of defect is over 20% plate thickness or the defect is over 25mm in depth and 150mm length若發(fā)現(xiàn)氣泡、裂紋或其他損傷缺陷，清除該缺陷后，應(yīng)用無損探傷法檢查后，采用適當方法進行修補。在個別夾層程度非常嚴重，且范圍廣泛，則整張鋼板應(yīng)更換。如（b）所示，夾層的范圍比較小，且接近鋼板表面，則進行焊補。 C is in disorder, and repairing is needed, . there are certain amounts of impermissible surface defects that shall be repaired according to the requirement. ：d，磨平（但d≤3mm；≤d≤，焊補后磨平；式中： d—缺陷深度，mm；t—鋼板厚度，mm。Material defects are to be kept within the limits as defined in table 111表111Table 111分類Classify項 目Ite