通用技术文件
GENERAL TECHNICAL PROVISION
[焊接打磨作业指导书]
[Grinding Working Instruction for welding]
文件代号Document No: BOGIE-GTP-0001
E
日期DATE: 2011-04-08
版本
REVSION: 2
REVISION 版本
0 1 2
DATE 日期
2010-11-18 2011-01-17 2011-04-08
第0版 FIRST ISSUE
DESCRIPTION
内容
第1版 Updated, change document No.VHS-GTP-0001 to BOGIE-GTP-0001 REV1. 更新文件编号VHS-GTP-0001 为BOGIE-GTP-0001 第2版增加TOT建议updated add TOT comments
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通用技术文件
GENERAL TECHNICAL PROVISION
[焊接打磨作业指导书]
[Grinding Working Instruction for welding]
文件代号Document No: BOGIE-GTP-0001
E
日期DATE: 2011-04-08
版本
REVSION: 2
一、总则General principles
在下列情形下焊工需要打磨：
The welder has to do grinding following: ——图纸上明确要求打磨的；
Required on the drawing;
——在文件中要求打磨的（包括与产品相关的方法文件，GTP 文件和相关的标准）；
Required on the documents(method, GTP or reference standard for production);
——焊接监督人要求打磨的。
Required by welding supervision.
当焊工不清楚如何去做的时候，需要焊工询问焊接监督人。
The welder has to ask welding supervision if things are not clear or possible to be done. 一般来说打磨是使焊缝与板之间或组件与组件之间达到圆滑的过渡，因此焊工需要：
The usual task is to achieve a smooth transition between weld and plate or components. Therefore he is
requested:
使用合适的打磨工具；
To use appropriate tools;
不要损伤母材，增加额外的切口或凹痕，打磨到母材表面即可； Grind only until the plates surface，not making additionally notches; 打磨方向平行于载荷方向或板材的压制方向；
Grinding has to follow the directions of load or plate as shown; 打磨不要减少材料壁厚或小于最小的厚度要求。
Minimal or nominal wall thickness are not to reduced by grinding. 二、工具 Tooling
1. 砂轮机Grinding wheel machine
焊前焊道清理打磨 To grind for weld preparation before welding 移除材料表面的锈蚀、油污和其他杂质 To remove rust, oil and foreign material on material surface 组装前坡口打磨 To grind bevel before assembly 用于焊缝接头打磨 To grind weld joint 用于焊缝层间清理打磨和清根 To grind inter pass and clean root 用于焊缝修理坡口打磨 To grind bevel for repairing 用于拐角处焊缝接头打磨 To grind weld joint in corner 用于焊缝修理坡口打磨 To grind bevel for repairing 用于清根打磨 To grind and clean root
2. 角磨机Corner grinding machine
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通用技术文件
GENERAL TECHNICAL PROVISION
[焊接打磨作业指导书]
[Grinding Working Instruction for welding]
文件代号Document No: BOGIE-GTP-0001
E
日期DATE: 2011-04-08
版本
REVSION: 2
打磨铰刀 Mill cutters 根据不同的打磨空间选择合适的铰刀 Choose appropriate mill cutter according to work space 用于根部清理打磨铰刀For grinding of root pass tool with sharp top is preferable to assure access
用于拐角处焊缝打磨 To grind weld in corner 3. 钢丝刷Steel wire grinding wheel
用于引弧板切割后的打磨 Grind after cut run on –run off plate
用于移除焊缝或材料表面的附锈。
Use for remove surface rust of weld and material. 4. 风铲Air chipper
用于焊缝的层间清理，去除氧化皮或药皮 Use for inter pass cleaning to remove slag and silica 用于表面的清理，去除氧化皮，飞溅 Use for weld surface cleaning to remove slag and silica and spatter
5. 砂轮片Grinding disk (颗粒度20-50 Granule size20-50)
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通用技术文件
GENERAL TECHNICAL PROVISION
[焊接打磨作业指导书]
[Grinding Working Instruction for welding]
文件代号Document No: BOGIE-GTP-0001
E
日期DATE: 2011-04-08
版本
REVSION: 2
125x2.5x22.2 125x6x22.2 125x22/5’x7/8’ 三、内容Content
1．焊前准备Grinding preparation prior to welding
a.所有pp件打砂去除表面的锈蚀、油污、以及其他杂质。
All pp parts should shot blasting to remove rust, oil and foreign material. b.组装前焊道两侧20mm的范围内打磨移除其他杂质。
Grind the range of 20mm on each side of the weld path before welding to remove foreign material. c.打磨前检查砂轮机转动时是否有油污飞出，确认没有油污飞溅后，才能开始打磨工件
Check grinding machine whether has oil fly off before grinding, ensure no oil splash form grind wheel, then can grind on parts
2．焊接过程中的打磨Grinding in the process of welding
a.焊道清理。多道焊时每焊完一道焊缝，要用钢丝砂轮或风铲去除焊缝表面的氧化皮，飞溅。 Clean of the weld path. For Multi-run welding, after finishing each weld, use the steel wire grinding wheel or the air chipper to remove the scale and the weld spatter on the weld surface. b.层间清理打磨去除不规则的焊缝，保证焊接平滑过渡。
Inter pass grinding to remove anomalistic weld to ensure weld transition smoothly.
c.背部清根。有背面焊的焊缝在焊完正面的焊缝后，用砂轮进行背面清根，焊前表面NDT检测，确保清根彻底. QA 检查确认。
Clean of the backside. For the welded joints with back welding, after finishing the obverse welded joint, use the grinding wheel to clean the back and NDT test before welding to ensure on defect on weld pass. QA inspect and confirm.
d.焊缝根部清理打磨Grind to clean root pass
焊接第一道前，用砂轮机或绞刀打磨移除锈蚀、油污、以及其他杂质
Grind to remove rust, oil and foreign material with grinding wheel or mill cutters before weld 1st run e.角焊缝和HY焊缝根部锈蚀的打磨清理Grinding to remove root corrosion of fillet and HY weld 用砂轮机或绞刀打磨移除锈蚀, 打磨根部约0.3-0.5mm深
Grind to remove root corrosion with grinding wheel or mill cutters, grind deep 0.3-0.5mm, see
following sketch
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