挂舵臂装配施工工艺
分段以左侧板为基面在平面胎架上侧造
分段建造步骤：
在胎架的基平面上划出舵中心线、角尺线、结构线、外板投影线、铸锻件端面线并作永久标记，依此用大型号型材和厚板材摆设水平胎架，净高大于700，在每档隔板处必须设支撑，牙板间距不大于800MM，如图:
a） 在胎架上作出水平线并标记好，用钢丝拉好轴线,将轴线架固定牢,根据样台提供的样板和型值划线、切割，误差不超过理论值2MM,经检验部门检验
合格后方可使用
b） 将下舵承按轴线和水平检验线精确定位,再吊装侧板件1、3,调整、加压到位后与胎架牙板焊牢双面焊接，根据基面上的结构线在侧板上划上装配线，报检合格后装配
c） 依次吊装水平和垂直隔板，再精确定位舵托
d） 焊接所有的立角焊、平角焊、平焊焊缝，分段的焊接必须在装配结束交验合格后方可进行，严禁边装配边焊接，铸件焊前需预热，焊接材料和焊接尺寸应予以控制
e） 检查合格后可吊装另一侧侧板，压到位后焊好定位焊，将合拢检验线（轴线及中线）作永久标记
f） 将牙板小心地割开，分段翻身，仍利用原来的胎架，按翻身后的线型略割一下，将分段与胎架点焊牢再施焊,交涂装处理
g） 检查合格后封板,然后打磨马脚，补焊凹坑
h） 安装吊环及吊环处的加强,再交涂装处理
i） 每道工序必须按规定报验合格后方可进入下道工序
挂舵臂焊接工艺
1.总则
本工艺作为吨散货船挂舵臂的焊接工艺，旨在减小挂舵臂焊接过程中焊接变形和焊接应力，避免产生焊接裂纹，提高焊接质量。
1.General
The welding procedure for 0 bulk cargo is to decrease welding
deformation and stress to avoid welding crack.
2.焊接方法
焊接采用手工焊接或CO2气体保护焊。
2.Welding Process
SMAW or CO2 semi-automatic arc welding may be adopted.
3.焊接材料
3.Welding Consumable
3.1 J507焊条必须经350~450℃烘干1~2小时。
3.1Low hydrogen electrodes should be dried on 350~450℃for 1~2 hours.
3.2 CO2气体保护焊焊丝不得受潮、生锈，拆封后存放不得超过一周。
3.2 The welding wire should not be wet, rust and not be open in air for
more than a week.
3.3焊接用CO2保护气体纯度不得低于99.5%,不得含有水、油等不利于焊接的杂质。
3.3 CO2 gas purity for welding is not less than 99.5% without any
harmful impurity for weld such as water and oil. 4.焊前准备
4.Preparation before weld
4.1在挂舵臂外板与挂舵臂铸钢件连接处开坡口，坡口角度如图1所示。
4.1Bevelling groove connection rudder horn plate to rudder horn
castings .The groove as the following figure 1.
图1 Figure 1
4.2在FR1横向围板与挂舵臂铸钢件连接处坡口,坡口角度如图2所示。
4.2Bevelling groove connection FR1 transverse web to rudder horn
casting, and the groove is shown as the figure 2.
图 2 Figure 2
4.3在横向围板上开横向围板与挂舵臂外板连接处的坡口，坡口角度如图3所示。
4.3 Bevelling groove connection transverse web to rudder horn plate, and the groove is shown as the figure 3. 铸钢件挂舵臂外板铸钢件挂舵臂外板铸钢件横向围板铸钢件横向围板4.4在横向筋板上开横向筋板与水平筋板连接处的坡口，坡口角度如图4所示
4.4Bevelling groove connection transverse web to horizontal web, and
the groove is shown as the figure 4.
4.5挂舵臂导边外板与挂舵臂外板之间对接焊缝坡口如图5所示。
4.5The groove of butt joint for rudder horn plate and rudder horn nose
plate is shown as the following figure 5.
4.6挂舵臂4900A.BL水平筋板坡口如图6所示。
4.6The groove of 4900A.BL horizontal web is shown as the following
figure 6.
4.7挂舵臂与船体外板的对接坡口如图7所示。
4.7The groove connection shell plate to rudder horn is shown as the
following figure 7. 水平围板横向筋板图
4.8舵杆处横向及纵向围板与12700平台处坡口如图8所示。
4.8The groove of seam connection rudder stock transverse webs and
longitudinal webs to 12700 platform plate is shown as the following figure 8.
4.9挂舵臂外板与10440平台处焊缝坡口如图9所示。
4.9 The groove of seam connection rudder horn plate to 10440 platform is
shown as the figure 9.
4.10挂舵臂与肋板之间焊缝坡口如图10所示。
4.10The groove of seam connection rudder horn to floor plates in hull structure is 铸钢件挂舵臂铸钢件与9450平台板对接缝与此类似图6图5igure 5平台舵杆横向围板（舵杆纵向围板）图 8 平台10440图9 铸钢件船体外板外侧图7 shown as the figure 10.
4.11挂舵臂与中纵桁、纵向壁板之间的焊缝坡口如图11所示。
4.11 The groove of seam connection rudder horn to middle longitudinal
girder and longitudinal wall plate is shown as the figure 11.
5.焊接
5.Welding
5.1挂舵臂内部构件及铸钢件的焊接
5.1Welding of rudder horn structures and castings
5.1.1焊接挂舵臂中水平筋板与横向筋板之间的立角焊缝，焊接顺序如图12所示。
5.1.1Welding fillet welds in vertical position connection horizontal web
and transverse web ,and the welding sequence is shown as the figure 12.
5.1.2焊接挂舵臂内横向筋板和水平筋板与挂舵臂外板之间的平角焊缝，焊接顺序入图13所示。
5.1.2Welding fillet weld in flat position connection transverse web and
horizontal web to rudder horn plate, and the welding sequence is shown
as the 图10 挂舵臂肋板挂舵臂中纵桁（纵向壁板图 Figure 13.
5.1.3焊接挂舵臂铸钢件与挂舵臂外板、横向隔板、横向筋板及水平筋板之间的焊缝，焊接顺序如图14所示。
5.1.3Welding seams connection castings to rudder horn plate, transverse
web and horizontal web and the welding sequence is shown as the
following figure 14.
5.1.4铸钢件焊接前预热至100~120℃，焊后加热至200~250℃（用烘枪加热），保温缓冷。
5.14Casting preheat temperature is 100~120℃, postheating for stress
relaxing to be carried out after welding, and the weld seams should be
wrapped up by asbestos and not less than 4 hours.
图 图