钢结构焊缝超声波探伤检验程序 中英文(T8mm)

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编写: 作业指导书: 审核: 钢结构焊缝超声波探伤检验程序 审定: (T<8mm) 东莞市莱刚钢结构有限公司 批准: 1 文件编号: REV: 日期: 2007/10/01 页码: AWS D1.1: 2006, ASME SEC.V, JB/T4730.3-2005 参考文件: CS LJY GWQ HYM 1/10

作业指导书

(四)

Task Steering

(第一版 1nd edition)

编制:

审核:

批准:

执行日期:2007年10月20日

编写: 作业指导书: 审核: 钢结构焊缝超声波探伤检验程序 审定: (T<8mm) 东莞市莱刚钢结构有限公司 批准: 1 文件编号: REV: 日期: 2007/10/01 页码: AWS D1.1: 2006, ASME SEC.V, JB/T4730.3-2005 参考文件: CS LJY GWQ HYM 2/10 1、 简介General

1.1 本工艺旨在叙述薄板焊缝,如外板对接缝的超声波探伤(UT)方法。本工

艺介绍的方法目前在AWS D1.1中未详述,但在其它应用中被证明可行。 The workmanship is describled about welding seam of thin palte,such as method of UT to butt joint seam of external plate.This workmanship introduction is describled in AWS D1.1,but in other experiments are to be proved useful.

1.2 AWS D1.1:2006附录K通常用于板厚小于8mm的焊件的超声波检测。 AWS D1.1:2006 attach K usually do UT for less than 8mm thickness

weldment.

2、 工艺要求 Workmanship Requirement 2.1 用本工艺可检测的焊缝类型

The type of welding seam what this workmanship can inspect

使用埋弧焊(SAW),药芯焊丝气体保护焊(FCAW),气体保护钨极电弧焊(GTAW)或药皮焊条电弧焊(SMAW)焊接,两母材板厚相同的对接焊缝均可使用此工艺进行检测。其它焊缝形式须单独鉴定和单独的工艺。

This workmanship can inspect SAW,FCAW,GTAW or SMAW,butt joint seam of the same thickness of base material.Other welding seam must have individual inspect and workmanship. 2.2 可用于检测的设备类型

Equipment type of inspection

符合6.22.1(AWS D1.1:2006)要求的任何超声波检测设均可使用。如果有能力检测出试验样板的缺陷且达到本工艺要求时,可以使用其它设备,见2.6至2.11。

UT idetection device can be used in accordance with 6.22.1(AWS D1.1:2006).If other equipments can inspect limitation of trail sample plate and in accord with workmanship request,then allow to use.see 2.6—2.11 2.3 探头 Search unit

探头应符合6.22.6或6.22.7(AWS D1.1:2006)。

Search unit should be in accordance with 6.22.6 or 6.22.7(AWS D1.1:2006). 2.3.1 直(纵波)探头Straight(longitudinal wave) search unit

直(纵波)探头晶片有效面积不小于323mm2,也不要大于645mm2。探头可圆可方。探头应按6.29.1.3 1(AWS D1.1:2006)所述要进行三次反射。 The wafer effective area of straight(longitudinal wave) search unit should be between 323mm2 and 645mm2 .Either round or square is allowed to search unit.Search unit shall do three times reflect as 6.29.1.3 1(AWS D1.1:2006) requested.

2.3.2 斜探头 Inclined search unit

编写: 作业指导书: 审核: 钢结构焊缝超声波探伤检验程序 审定: (T<8mm) 东莞市莱刚钢结构有限公司 批准: 1 文件编号: REV: 日期: 2007/10/01 页码: AWS D1.1: 2006, ASME SEC.V, JB/T4730.3-2005 参考文件: CS LJY GWQ HYM 3/10 2.3.3

斜探头包括探头和入射角度。

Inclined search unit include search unit and incidence angle

2.3.2.1 频率 Frequency

探头频率应在2到6MHz之间,包括2和6MHz。

Search unit frequency shall between 2 and 6 MHz,include 2 and 6MHz.

2.3.2.2 探头尺寸 Search unit dimension

探头晶体外形可为正方形或矩形,宽度范围为15~25 mm,高度范围为15~25 mm。最大宽高比为1.2比1.1,最小宽高比为1.0比1.0。 The wafer externality of search unit shall be square or rectangle,width scope is 15~~25mm,height scope is 15~~25mm.The largest rate of width and height is 1.2:1.1,the smallest rate of width and height is 1.0:1.0.

2.3.2.3 探头角度 Search unit angle

探头角度在68到72度之间。

Search unit angle shall between 68 and 72 degree.

2.3.2.4 标记 Marking

每个探头应明确标记探头频率,理论反射角和入射点。入射点定位方法如6.29.2.1(AWS D1.1:2006)所述。

Each search unit shall mark search unit frequency,angle of reflection and points of incidence. The orientation method of points of incidence shall in accordance with 6.29.2.1(AWS D1.1:2006).

2.3.2.5 内部反射 Internal reflection

最大允许内部反射如6.24.3 1(AWS D1.1:2006)所述。

The biggest allowance of Internal reflection shall in accordance with 6.24.3 1(AWS D1.1:2006).

2.3.2.6 边缘距离 Edge distance.

探头尺寸是指从探头导入边缘到入射点之间的距离,它不超过25 mm。

Search unit dimension is from guide edge to points of incidence distance,less than 25mm.

2.3.2.7 IIW 块 ⅡW Sample

使用IIW标准块方法应符合6.29.2.6(AWS D1.1:2006),如图6.21(AWS D1.1:2006)所示。

The standard method of use ⅡW sample shall in accordance with 6.29.2.6(AWS D1.1:2006),see picture 6.21(AWS D1.1:2006).

2.3.2.8 附加校准块 Additional calibration block

要求有一个校准块,如下:

A calibration block is requested,see as follow:

2.3.2.8.1 接头结构 Search unit structure

编写: 作业指导书: 审核: 钢结构焊缝超声波探伤检验程序 审定: (T<8mm) 东莞市莱刚钢结构有限公司 批准: CS LJY GWQ HYM 文件编号: 参考文件: 2.3.2.8.2

2.3.2.8.3

2.3.2.8.4

2.3.2.8.5

2.3.2.8.6

REV: 1 日期: 2007/10/01 页码: 4/10 AWS D1.1: 2006, ASME SEC.V, JB/T4730.3-2005 只有坡口对接接头才能使用。

Bevel butt joint search unit can be only used. 材料类型 Material type

试验板材料须与实际焊接中使用的材料相同。

The material of sample plate shall be same as actual welding. 材料厚度 Material thickness

生产中检测的材料厚度应不大于试验样板的厚度。

Material thickness is needed to inspect that shall not thicker than sample plate during fabrication.

缺陷尺寸,方向和位置 limitation demision,direction and position 为可表示在生产焊缝中可能要出现的缺陷,试样应用标准块。此标准块包括一个直径为1.5 mm,平行于焊缝轴线,位于熔合区且贯穿试验板的通孔。见图1: 典型标准块位置。

In order to display limitation of welding that may be occurred,sample shall use standard one.There is a through hole in this standard sample,which shall be 1.5mm diameter,parallel welding seam axes,locate in fusion area and through sample plate. See picture 1:standard sample position

缺陷类型和位置 limitation type and position

在执行本工艺选择水平III时,标准块可存在其它类型缺陷。如有意识地让坡口焊缝未焊透,夹钨,焊缝塞入垫圈或螺母,或者其它能提供的与在实际生产中可能遇到的缺陷信号相同的方法。除了2.3.2.8.4条所指的钻孔外,包含缺陷的任何试验校准块应先进行射线探伤以确定缺陷尺寸、方位。画出标准块图与射线底片一起存档备案。

Technological choice in the implementation of the level III, the standard block may exist other types of defects. If so that the sense of groove weld lack of penetration, folder tungsten, insert washers or weld nut, or to provide other in the actual production may signal defects encountered the same way. Apart from the meaning of section 2.3.2.8.4 bored, contains flawed calibration block any trial should be conducted to determine the defect-detection size, position. Standard block map drawn-ray film archive with the record. 校准严禁使用角落反射。

Forbideen using corner inflection when adjustment

编写: 作业指导书: 审核: 钢结构焊缝超声波探伤检验程序 审定: (T<8mm) 东莞市莱刚钢结构有限公司 批准: 1 文件编号: REV: 日期: 2007/10/01 页码: AWS D1.1: 2006, ASME SEC.V, JB/T4730.3-2005 参考文件: CS LJY GWQ HYM 5/10 通孔板宽应满足到焊缝每侧应有2个扫描距离。通孔图 1 2.4

探伤表面处理 Testing surface treatment

被探焊缝表面及相邻区域应用砂轮磨干净或用钢丝刷刷干净到允许超声波畅通无阻进入母材的程度。被探表面最少应如标准块般光洁。

The welding seam surface and adjacent area shall be cleaned by grinding wheel and wire brush,make sure that the ultrasonic can enter into base material unlocked.The glabrous of inspected surface shall be same as standard sample . 2.5 耦合剂 Couplant

在被探材料与探头之间应使用耦合剂。可以使用甘油或纤维胶与水按比例混合作为耦合剂。如果必要,可使用湿的添加剂。标准块可以用轻机油作为耦合剂。

Couplant shall be used between inspected material and search unit.Couplant can mix with glycerin or “viscose and water”.If necessary, wet additive is allowed to use.Standard sample can use light machine oil as couplant. 2.6 设备要求 Equipment requirement

采用适当的A型显示脉冲反射式超声波探伤仪,工作频率为1~6MHz。 A type vision impluse reflection ultrasonic fault detector is properly used,working frequency is 1~~6MHz. 2.6.1 水平线性 Horizontal linearity

探伤仪的水平线性应在用于检测的全声程距离内进行认证,应与6.30.1(AWS D1.1:2006)一致。

Horizontal linearity of flaw detector shall be checked in sound path distance,and shall be in accordance with 6.30.1(AWS D1.1:2006).

2.6.2 探伤仪要求Flaw detector requirement

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