管道焊缝射线探伤评片图--未熔合15张模板
【特种设备高级考试】射线底片图谱
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八、伪缺陷
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（感谢锅炉信息网锅炉论坛－dingf 朋友提供）
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一、表面缺陷
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二、气孔
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三、加渣
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四、加钨
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五、未焊透
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7071ຫໍສະໝຸດ 72六、未熔合73
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七、裂纹
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焊缝射线照相底片的评判规律
一、 探伤人员要评片，四项指标放在先*，底片标记齐又正，铅字压缝为废片。 二、 评片开始第一件，先找四条熔合线，小口径管照椭圆，根部都在圈里面。 三、 气孔形象最明显，中心浓黑边缘浅，夹渣属于非金属，杂乱无章有棱边。 四、 咬边成线亦成点，似断似续常相见，这个缺陷最好定，位置就在熔合线。 五、 未焊透是大缺陷，典型图象成直线，间隙太小钝边厚，投影部位*中间。 六、 内凹只在仰焊面，间隙太大是关键，内凹未透要分清，内凹透度成弧线。 七、 未熔合它斜又扁，常规透照难发现，它的位置有规律，都在坡口与层间。 八、 横裂纵裂都危险，横裂多数在表面，纵裂分布范围广，中间稍宽两端尖。 九、 还有一种冷裂纹，热影响区常发现，冷裂具有延迟性，焊完两天再拍片。 十、 有了裂纹很危险，斩草除根保安全，裂纹不论长和短，全部都是Ⅳ级片。 十一、 未熔和也很危险，黑度有深亦有浅，一旦判定就是它，亦是全部Ⅳ级片。 十二、 危害缺陷未焊透，Ⅱ级焊缝不能有，管线根据深和长，容器跟着条渣走**。 十三、 夹渣评定莫着忙，分清圆形和条状，长宽相比 3 为界，大于 3 倍是条状。 十四、 气孔危害并不大，标准对它很宽大，长径折点套厚度，中间厚度插入法。 十五、 多种缺陷大会合，分门别类先评级，2 类相加减去Ⅰ，3 类相加减Ⅱ级。 十六、 评片要想快又准，下拜焊工当先生，要问诀窍有哪些，焊接工艺和投影。 注：*四项指标系底片的黑度、灵敏度、清晰度、灰雾度必须符合标准的要求。 **指单面焊的管线焊缝和双面焊的容器焊缝内未焊透的判定标准。
射线探伤底片评定
射线探伤底片评定6.1底片质量及评片工作的要求按照JB4730-94和GB3323-87标准，x射线底片黑度应控制在1.2〜3.5; 丫射线底片黑度控制在1.8〜3.5。
黑度用黑度计来测量。
其下限值是在底片两端的搭接标记内侧焊缝上无缺陷处测量，测多少点不限，但不能取平均值，其每一点测量值应不小于下限值。
上限值是在主射线束照射的底片的中间部位焊缝近旁的母材上测量，每一点的测量值应不高于上限值。
底片上缺陷部位的黑度不受上述限制。
底片上显示出的最小线径的象质指数应满足该透照厚度规定达到的象质指数。
象质指数的观察借助于刻有10X 10小窗口的黑纸板或黑塑料板来进行。
在观片灯下将小窗口放置在底片焊缝上有象质计一端的端头，且将小窗在焊缝上慢慢地向底片中部移动，注意观察小窗口，首先发现的连接小窗口上下边缘的金属丝影象，就是所显示的象质指数的影象。
底片上所显示的象质计、定位标记、识别标记、“ B”铅字等符号，必须位置正确，类别齐全，数量足够，且不掩盖被检焊缝影象。
在底片评定区域内不应有妨碍底片评定的假缺陷。
如：灰雾、水迹、化学污斑、暗室处理条纹、划痕、指纹、静电痕迹、黑点、撕裂和增感屏不好造成的假缺陷。
透照盒背后确实放置有“ B”铅字，底片未显示“ B”字或显示较黑的“ B” 字，不影响底片质量，若显示较淡的“ B”字则是背散射线防护不够，该张底片应重照。
6.底片规格底片长度应等于L eff加20mm底片宽度应容纳下焊缝和热影响区的宽度和焊缝两边所放各种铅质符号。
7 •焊缝影象位置透照焊缝的部位，必须平行显示在底片的中部，若有丁字口也要置于底片中间部位。
底片不允许有白头。
1.评片应有专用的评片室。
评片室的光线应稍暗一些，室内的照明不应在底片上产生反射光。
评片室应宁静、卫生、通风良好。
工作台上应能妥善放置观片灯、黑度计、评片尺、纪录纸、相关标准等。
2.观片灯的亮度不小于100000cd/m2，且所用的漫射光亮度应可调，窗口大小可调，遮光板灵活好用，散热良好无噪声。
焊缝RT底片评判规律及典型缺陷图谱
焊缝射线照相底片的评判规律一、探伤人员要评片，四项指标放在先*，底片标记齐又正，铅字压缝为废片。
二、评片开始第一件，先找四条熔合线，小口径管照椭圆，根部都在圈里面。
三、气孔形象最明显，中心浓黑边缘浅，夹渣属于非金属，杂乱无章有棱边。
四、咬边成线亦成点，似断似续常相见，这个缺陷最好定，位置就在熔合线。
五、未焊透是大缺陷，典型图象成直线，间隙太小钝边厚，投影部位靠中间。
六、凹只在仰焊面，间隙太大是关键，凹未透要分清，凹透度成弧线。
七、未熔合它斜又扁，常规透照难发现，它的位置有规律，都在坡口与层间。
八、横裂纵裂都危险，横裂多数在表面，纵裂分布围广，中间稍宽两端尖。
九、还有一种冷裂纹，热影响区常发现，冷裂具有延迟性，焊完两天再拍片。
十、有了裂纹很危险，斩草除根保安全，裂纹不论长和短，全部都是Ⅳ级片。
十一、未熔和也很危险，黑度有深亦有浅，一旦判定就是它，亦是全部Ⅳ级片。
十二、危害缺陷未焊透，Ⅱ级焊缝不能有，管线根据深和长，容器跟着条渣走**。
十三、夹渣评定莫着忙，分清圆形和条状，长宽相比3为界，大于3倍是条状。
十四、气孔危害并不大，标准对它很宽大，长径折点套厚度，中间厚度插入法。
十五、多种缺陷大会合，分门别类先评级，2类相加减去Ⅰ，3类相加减Ⅱ级。
十六、评片要想快又准，下拜焊工当先生，要问诀窍有哪些，焊接工艺和投影。
注：*四项指标系底片的黑度、灵敏度、清晰度、灰雾度必须符合标准的要求。
**指单面焊的管线焊缝和双面焊的容器焊缝未焊透的判定标准。
Radiograph Interpretation - WeldsIn addition to producing high quality radiographs, the radiographer must also be skilled in radiographic interpretation. Interpretation of radiographs takes place in three basic steps which are (1) detection, (2) interpretation, and (3) evaluation. All of these steps make use of the radiographer's visual acuity. Visual acuity is the ability to resolve a spatial pattern in an image. The ability of an individual to detect discontinuities in radiography is also affected by the lighting condition in the place of viewing, and the experience level for recognizing various features in the image. The following material was developed to help students develop an understanding of the types of defects found in weldments and how they appear in a radiograph.DiscontinuitiesDiscontinuities are interruptions in the typical structure of a material. These interruptions may occur in the base metal, weld material or "heat affected" zones. Discontinuities, which do not meet the requirements of the codes or specification used to invoke and control an inspection, are referred to as defects.General Welding DiscontinuitiesThe following discontinuities are typical of all types of welding.Cold lap is a condition where the weld filler metal does not properly fuse with the base metal or the previous weld pass material (interpass cold lap). The arc does not melt the base metal sufficiently and causes the slightly molten puddle to flow into base material without bonding.Porosity气孔is the result of gas entrapment in the solidifying metal. Porosity can take many shapes on a radiograph but often appears as dark round or irregular spots or specks appearing singularly, in clusters or rows. Sometimes porosity is elongated and may have the appearance of having a tail This is the result of gas attempting to escape while the metal is still in a liquid state and is called wormhole porosity. All porosity is a void in the material it will have a radiographic density more than the surrounding area..Cluster porosity链状气孔is caused when flux coated electrodes are contaminated with moisture. The moisture turns into gases when heated and becomes trapped inthe weld during the welding process. Cluster porosity appear just like regular porosity in the radiograph but the indications will be grouped close together.Slag inclusions夹渣are nonmetallic solid material entrapped in weld metal or between weld and base metal. In a radiograph, dark, jagged asymmetrical shapes within the weld or along the weld joint areas are indicative of slag inclusions.Incomplete penetration (IP) or lack of penetration (LOP)未焊透occurs when the weld metal fails to penetrate the joint. It is one of the most objectionable weld discontinuities. Lack of penetration allows a natural stress riser from which a crackmay propagate. The appearance on a radiograph is a dark area with well-defined, straight edges that follows the land or root face down the center of the weldment.Incomplete fusion未熔合is a condition where the weld filler metal does not properly fuse with the base metal. Appearance on radiograph: usually appears as a dark line or lines oriented in the direction of the weld seam along the weld preparation or joining area.Internal concavity or suck back凹或吸入is condition where the weld metal has contracted as it cools and has been drawn up into the root of the weld. On aradiograph it looks similar to lack of penetration but the line has irregular edges and it is often quite wide in the center of the weld image.Internal or root undercut部或根部咬边is an erosion of the base metal next to the root of the weld. In the radiographic image it appears as a dark irregular line offset from the centerline of the weldment. Undercutting is not as straight edged as LOP because it does not follow a ground edge.External or crown undercut外部或顶部咬边is an erosion of the base metal next to the crown of the weld. In the radiograph, it appears as a dark irregular line along the outside edge of the weld area.Offset or mismatch错边are terms associated with a condition where two pieces being welded together are not properly aligned. The radiographic image is a noticeable difference in density between the two pieces. The difference in density is caused by the difference in material thickness. The dark, straight line is caused by failure of the weld metal to fuse with the land area.Inadequate weld reinforcement未填满is an area of a weld where the thickness of weld metal deposited is less than the thickness of the base material. It is very easy to determine by radiograph if the weld has inadequate reinforcement, because the image density in the area of suspected inadequacy will be more (darker) than the image density of the surrounding base material.Excess weld reinforcement增强余高is an area of a weld, which has weld metal added in excess of that specified by engineering drawings and codes. The appearance on a radiograph is a localized, lighter area in the weld. A visual inspection will easily determine if the weld reinforcement is in excess of that specified by the individual code involved in the inspection.Cracking裂纹can be detected in a radiograph only the crack is propagating in a direction that produced a change in thickness that is parallel to the x-ray beam. Cracks will appearas jagged and often very faint irregular lines. Cracks can sometimes appearing as "tails" on inclusions or porosity.Discontinuities in TIG weldsThe following discontinuities are peculiar to the TIG welding process. These discontinuities occur in most metals welded by the process including aluminum and stainless steels. The TIG method of welding produces a clean homogeneous weld which when radiographed is easily interpreted.Tungsten inclusions. 夹钨Tungsten is a brittle and inherently dense material used in the electrode in tungsten inert gas welding. If improper welding procedures are used, tungsten may be entrapped in the weld. Radiographically, tungsten is more dense than aluminum or steel; therefore, it shows as a lighter area with a distinct outline on the radiograph.Oxide inclusions夹氧化物are usually visible on the surface of material being welded (especially aluminum). Oxide inclusions are less dense than the surrounding materials and, therefore, appear as dark irregularly shaped discontinuities in the radiograph.Discontinuities in Gas Metal Arc Welds (GMAW)The following discontinuities are most commonly found in GMAW welds.Whiskers are short lengths of weld electrode wire, visible on the top or bottom surface of the weld or contained within the weld. On a radiograph they appear as light, "wire like" indications.Burn through (icicles) results when too much heat causes excessive weld metal to penetrate the weld zone. Lumps of metal sag through the weld creating a thick globular condition on the back of the weld. On a radiograph, burn through appears as dark spots surrounded by light globular areas.welld-02 (Incomplete Root Fusion、根部未熔合)....welld-03 (Insuffucient Reinforcement、增强高) ....welld-04 (Excess Root Penetration、根部焊瘤) ....welld-05 (External Undercut、外部咬肉) ....welld-06 (Internal Undercut、部咬肉) ....welld-07 (Root Concavity、根部凹陷) ....welld-08 (Burn Through、烧穿) ....welld-09 (Isolated Slag Inclusion、单个的夹渣) ....welld-10 (Wagon Track - Slag Line、线状夹渣) ....welld-11 (Interrun Fusion、部未熔合) ....welld-12 (Lack of Sidewall Fusion、侧未熔合) ....welld-13 (Porosity、气孔) ....welld-14 (Cluster Porosity、链状气孔) ....welld-15 (Hollow Bead、夹珠) ....welld-16 (Transverse Crack、横向裂纹) ....welld-17 (Centerline Crack、中心线裂纹) ....welld-18 (Root Crack、根部裂纹) ....welld-19 (Tungsten Inclusion)夹钨....。
焊缝RT底片的评判规律及典型缺陷图谱
焊缝射线照相底片的评判规律一、探伤人员要评片，四项指标放在先*，底片标记齐又正，铅字压缝为废片。
二、评片开始第一件，先找四条熔合线，小口径管照椭圆，根部都在圈里面。
三、气孔形象最明显，中心浓黑边缘浅，夹渣属于非金属，杂乱无章有棱边。
四、咬边成线亦成点，似断似续常相见，这个缺陷最好定，位置就在熔合线。
五、未焊透是大缺陷，典型图象成直线，间隙太小钝边厚，投影部位靠中间。
六、内凹只在仰焊面，间隙太大是关键，内凹未透要分清，内凹透度成弧线。
七、未熔合它斜又扁，常规透照难发现，它的位置有规律，都在坡口与层间。
八、横裂纵裂都危险，横裂多数在表面，纵裂分布范围广，中间稍宽两端尖。
九、还有一种冷裂纹，热影响区常发现，冷裂具有延迟性，焊完两天再拍片。
十、有了裂纹很危险，斩草除根保安全，裂纹不论长和短，全部都是Ⅳ级片。
十一、未熔和也很危险，黑度有深亦有浅，一旦判定就是它，亦是全部Ⅳ级片。
十二、危害缺陷未焊透，Ⅱ级焊缝不能有，管线根据深和长，容器跟着条渣走**。
十三、夹渣评定莫着忙，分清圆形和条状，长宽相比3为界，大于3倍是条状。
十四、气孔危害并不大，标准对它很宽大，长径折点套厚度，中间厚度插入法。
十五、多种缺陷大会合，分门别类先评级，2类相加减去Ⅰ，3类相加减Ⅱ级。
十六、评片要想快又准，下拜焊工当先生，要问诀窍有哪些，焊接工艺和投影。
注：*四项指标系底片的黑度、灵敏度、清晰度、灰雾度必须符合标准的要求。
**指单面焊的管线焊缝和双面焊的容器焊缝内未焊透的判定标准。
Radiograph Interpretation - WeldsIn addition to producing high quality radiographs, the radiographer must also be skilled in radiographic interpretation. Interpretation of radiographs takes place in three basic steps which are (1) detection, (2) interpretation, and (3) evaluation. All of these steps make use of the radiographer's visual acuity. Visual acuity is the ability to resolve a spatial pattern in an image. The ability of an individual to detect discontinuities in radiography is also affected by the lighting condition in the place of viewing, and the experience level for recognizing various features in the image. The following material was developed to help students develop an understanding of the types of defects found in weldments and how they appear in a radiograph.DiscontinuitiesDiscontinuities are interruptions in the typical structure of a material. These interruptions may occur in the base metal, weld material or "heat affected" zones. Discontinuities, which do not meet the requirements of the codes or specification used to invoke and control an inspection, are referred to as defects.General Welding DiscontinuitiesThe following discontinuities are typical of all types of welding.Cold lap is a condition where the weld filler metal does not properly fuse with the base metal or the previous weld pass material (interpass cold lap). The arc does not melt the base metal sufficiently and causes the slightly molten puddle to flow into base material without bonding.Porosity气孔is the result of gas entrapment in the solidifying metal. Porosity can take many shapes on a radiograph but often appears as dark round or irregular spots or specks appearing singularly, in clusters or rows. Sometimes porosity is elongated and may have the appearance of having a tail This is the result of gas attempting to escape while the metal is still in a liquid state and is called wormhole porosity. All porosity is a void in the material it will have a radiographic density more than the surrounding area..Cluster porosity链状气孔is caused when flux coated electrodes are contaminated with moisture. The moisture turns into gases when heated and becomes trapped in the weld during the welding process. Cluster porosity appear just like regular porosity in the radiograph but the indications will be grouped close together.Slag inclusions夹渣are nonmetallic solid material entrapped in weld metal or between weld and base metal. In a radiograph, dark, jagged asymmetrical shapes within the weld or along the weld joint areas are indicative of slag inclusions.Incomplete penetration (IP) or lack of penetration (LOP)未焊透occurs when the weld metal fails to penetrate the joint. It is one of the most objectionable weld discontinuities. Lack of penetration allows a natural stress riser from which a crack may propagate. The appearance on a radiograph is a dark area with well-defined, straight edges that follows the land or root face down the center of the weldment.Incomplete fusion未熔合is a condition where the weld filler metal does not properly fuse with the base metal. Appearance on radiograph: usually appears as a dark line or lines oriented in the direction of the weld seam along the weld preparation or joining area.Internal concavity or suck back内凹或吸入is condition where the weld metal has contracted as it cools and has been drawn up into the root of the weld. On a radiograph it looks similar to lack of penetration but the line has irregular edges and it is often quite wide in the center of the weld image.Internal or root undercut内部或根部咬边is an erosion of the base metal next to the root of the weld. In the radiographic image it appears as a dark irregular line offsetfrom the centerline of the weldment. Undercutting is not as straight edged as LOP because it does not follow a ground edge.External or crown undercut外部或顶部咬边is an erosion of the base metal next to the crown of the weld. In the radiograph, it appears as a dark irregular line along the outside edge of the weld area.Offset or mismatch错边are terms associated with a condition where two pieces being welded together are not properly aligned. The radiographic image is a noticeable difference in density between the two pieces. The difference in density is caused by the difference in material thickness. The dark, straight line is caused by failure of the weld metal to fuse with the land area.Inadequate weld reinforcement未填满is an area of a weld where the thickness of weld metal deposited is less than the thickness of the base material. It is very easy to determine by radiograph if the weld has inadequate reinforcement, because the image density in the area of suspected inadequacy will be more (darker) than the image density of the surrounding base material.Excess weld reinforcement增强余高is an area of a weld, which has weld metal added in excess of that specified by engineering drawings and codes. The appearance on a radiograph is a localized, lighter area in the weld. A visual inspection will easily determine if the weld reinforcement is in excess of that specified by the individual code involved in the inspection.Cracking裂纹can be detected in a radiograph only the crack is propagating in a direction that produced a change in thickness that is parallel to the x-ray beam.Cracks will appearas jagged and often very faint irregular lines. Cracks can sometimes appearing as "tails" on inclusions or porosity.Discontinuities in TIG weldsThe following discontinuities are peculiar to the TIG welding process. These discontinuities occur in most metals welded by the process including aluminum and stainless steels. The TIG method of welding produces a clean homogeneous weld which when radiographed is easily interpreted.Tungsten inclusions. 夹钨Tungsten is a brittle and inherently dense material used in the electrode in tungsten inert gas welding. If improper welding procedures are used, tungsten may be entrapped in the weld. Radiographically, tungsten is more dense than aluminum or steel; therefore, it shows as a lighter area with a distinct outline on the radiograph.Oxide inclusions夹氧化物are usually visible on the surface of material being welded (especially aluminum). Oxide inclusions are less dense than the surrounding materials and, therefore, appear as dark irregularly shaped discontinuities in the radiograph.Discontinuities in Gas Metal Arc Welds (GMAW)The following discontinuities are most commonly found in GMAW welds. Whiskers are short lengths of weld electrode wire, visible on the top or bottom surface of the weld or contained within the weld. On a radiograph they appear as light, "wire like" indications.Burn through (icicles) results when too much heat causes excessive weld metal to penetrate the weld zone. Lumps of metal sag through the weld creating a thick globular condition on the back of the weld. On a radiograph, burn through appears as dark spots surrounded by light globular areas.welld-02 (Incomplete Root Fusion、根部未熔合)welld-03 (Insuffucient Reinforcement、增强高)welld-04 (Excess Root Penetration、根部焊瘤)welld-05 (External Undercut、外部咬肉)welld-06 (Internal Undercut、内部咬肉)welld-07 (Root Concavity、根部凹陷)welld-08 (Burn Through、烧穿)welld-09 (Isolated Slag Inclusion、单个的夹渣)welld-10 (Wagon Track - Slag Line、线状夹渣)welld-11 (Interrun Fusion、内部未熔合)welld-12 (Lack of Sidewall Fusion、内侧未熔合)welld-13 (Porosity、气孔)welld-14 (Cluster Porosity、链状气孔)welld-15 (Hollow Bead、夹珠)welld-16 (Transverse Crack、横向裂纹)welld-17 (Centerline Crack、中心线裂纹)welld-18 (Root Crack、根部裂纹)welld-19 (Tungsten Inclusion)夹钨。
射线底片图谱
焊缝射线照相底片的评判规律一、探伤人员要评片，四项指标放在先*，底片标记齐又正，铅字压缝为废片。
二、评片开始第一件，先找四条熔合线，小口径管照椭圆，根部都在圈里面。
三、气孔形象最明显，中心浓黑边缘浅，夹渣属于非金属，杂乱无章有棱边。
四、咬边成线亦成点，似断似续常相见，这个缺陷最好定，位置就在熔合线。
五、未焊透是大缺陷，典型图象成直线，间隙太小钝边厚，投影部位*中间。
六、内凹只在仰焊面，间隙太大是关键，内凹未透要分清，内凹透度成弧线。
七、未熔合它斜又扁，常规透照难发现，它的位置有规律，都在坡口与层间。
八、横裂纵裂都危险，横裂多数在表面，纵裂分布范围广，中间稍宽两端尖。
九、还有一种冷裂纹，热影响区常发现，冷裂具有延迟性，焊完两天再拍片。
十、有了裂纹很危险，斩草除根保安全，裂纹不论长和短，全部都是Ⅳ级片。
十一、未熔和也很危险，黑度有深亦有浅，一旦判定就是它，亦是全部Ⅳ级片。
十二、危害缺陷未焊透，Ⅱ级焊缝不能有，管线根据深和长，容器跟着条渣走**。
十三、夹渣评定莫着忙，分清圆形和条状，长宽相比3为界，大于3倍是条状。
十四、气孔危害并不大，标准对它很宽大，长径折点套厚度，中间厚度插入法。
十五、多种缺陷大会合，分门别类先评级，2类相加减去Ⅰ，3类相加减Ⅱ级。
十六、评片要想快又准，下拜焊工当先生，要问诀窍有哪些，焊接工艺和投影。
注：*四项指标系底片的黑度、灵敏度、清晰度、灰雾度必须符合标准的要求。
**指单面焊的管线焊缝和双面焊的容器焊缝内未焊透的判定标准。
（感谢锅炉信息网锅炉论坛－dingf朋友提供）一、表面缺陷二、气孔三、加渣。
射线评片技巧焊缝未熔合射线底片影像特点修订版
射线评片技巧焊缝未熔合射线底片影像特点修订版焊缝未熔合是指焊接过程中产生的焊缝没有完全熔化。
未熔合的焊缝可能由焊接参数不合理、焊接速度过快、焊接温度不够高等因素导致。
焊缝未熔合会对焊接强度和密封性产生负面影响，因此在射线评片时需要仔细识别并进行修补。
焊缝未熔合在射线底片影像上通常具有以下特点：1.未熔合区域呈现出明显的黑色区域，与周围的焊接区域形成鲜明的对比。
这是因为未熔合的焊缝没有完全熔化，导致射线无法穿透，从而在底片上形成黑色阴影。
2.未熔合区域的形状与位置通常与焊缝的几何形状有关。
未熔合可能发生在焊缝的一侧或两侧，也可能出现在焊缝末端或中间位置。
未熔合的形状通常较为分散，但有时也可能是线状或条状。
3.未熔合区域的大小和数量会影响焊缝的质量评估。
如果未熔合区域较小且数量较少，可以通过焊接修补的方法来解决。
然而，如果未熔合区域较大或数量较多，可能需要重新进行焊接或其他更复杂的修复工作。
基于以上的射线底片影像特点，我们可以修订射线评片技巧，以更准确地识别并处理焊缝未熔合的问题：1.注意观察底片上的黑色阴影区域，特别是与焊缝相连的区域。
将注意力集中在这些区域，并与周围的焊接区域进行对比。
2.使用放大镜或显微镜来观察未熔合区域的细节。
尽量将焊缝未熔合与其他阴影区域（如气孔、夹杂物等）进行区分，以确保准确识别。
3.将未熔合的焊缝区域绘制在焊接图上，以形成焊缝未熔合区域的几何形状。
这有助于评估未熔合的大小和位置，并指导后续修补的方法。
4.根据未熔合的大小和数量，确定相应的修补措施。
对于较小的未熔合区域，可以采用焊接修补的方法。
对于较大或数量较多的未熔合区域，需要重新进行焊接或其他更复杂的修复工作。
总之，射线评片技巧是识别焊缝未熔合问题的重要工具。
通过观察底片上的特点，我们可以准确识别未熔合的区域，并采取相应的修补措施。
修订后的射线评片技巧将使评估焊缝质量变得更准确和可靠。
射线探伤评片图--气孔36张
其它缺陷
编号
焊接方法 手工
焊缝型式 焊接位置 重点观察缺陷
单面
水平
第十八页，共23页。
链状气孔
其它缺陷
编号
焊接方法
焊缝型 式
焊接位 置
手工
单面
水平
重点观察缺陷 表面气孔
其它缺陷
第十九页，共23页。
编号
焊接方法
焊缝型 式
焊接位 置
手工
单面
水平
重点观察缺陷 密集气孔
其它缺陷
第二十页，共23页。
编号
焊接方法
焊缝型 式
焊接位 置
手工
单面
水平
重点观察缺陷 气孔
其它缺陷
第二十一页，共23页。
编号
焊接方法
焊缝型 式
焊接位 置
手工
单面
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重点观察缺陷 气孔
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第二十二页，共23页。
编号
焊接方法
焊缝型 式
焊接位 置
手工
单面
水平
重点观察缺陷 气孔
其它缺陷
第二十三页，共23页。
编号 焊接方法
QK05 QK07
自动
焊缝型式 焊接位置
双面
平
重点观察缺陷 圆形气孔
第一页，共23页。
其它缺陷
编号 QK08
焊接方法 自动
焊缝型式 焊接位置
双面
平
重点观察缺陷 圆形气孔
第二页，共23页。
其它缺陷
编号 焊接方法 焊缝型式 焊接位置
QK04 自动
双面
平
重点观察缺陷 圆形气孔
第三页，共23页。
双面
平
重点观察缺陷 深孔
射线评片技巧焊缝未熔合射线底片影像特点
射线评片技巧焊缝未熔合射线底片影像特点
1.确认焊缝未熔合：焊缝未熔合是焊接过程中常见的缺陷之一，射线底片可以用来检测焊缝是否完全熔合。
未熔合的焊缝通常呈现出清晰的分界线，与周围金属材料形成明显的对比。
2.射线底片的密度：未熔合的焊缝在射线底片上通常呈现出高密度区域，与周围金属材料形成明显的对比。
这是因为未熔合的焊缝中存在大量的气孔、夹杂物和未融化的焊剂等杂质，使得射线通过时被散射或吸收，导致底片上呈现出高密度的暗区。
3.射线底片的对比度：未熔合的焊缝通常呈现出与周围金属材料形成鲜明的对比。
这是因为焊缝未熔合造成了电阻增大，导致射线相对于金属材料的透射度下降，从而使得未熔合的焊缝在底片上呈现出较暗的图像。
4.焊缝未熔合的形态特点：未熔合的焊缝通常在射线底片上呈现出不规则的形态。
这是因为未熔合的焊缝中存在许多气孔和夹杂物，使得焊缝的形态变得复杂多样。
有时，未熔合的焊缝还会呈现出分叉、分支或断裂等特点。
5.射线底片上的其他缺陷：除了未熔合的焊缝，射线底片上还可能存在其他缺陷，如焊缝偏位、焊缝内裂纹、夹渣、气孔等等。
这些缺陷与未熔合的焊缝在底片上呈现出类似的特点，但其形态和密度可能有所差别。
总之，射线评片技巧可以帮助检测焊缝未熔合的缺陷。
通过分析射线底片上的影像特点，可以有效地鉴别未熔合的焊缝和其他类型的缺陷，为焊接工艺的质量控制提供可靠的依据。
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其它缺陷
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 内部未熔合
其它缺陷
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 内侧未熔合
其它缺陷
编号
WRH
重点观察缺陷
其它缺陷
根部未熔合
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 层间未熔合
其它缺陷
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 焊缝与母材未熔合
其它缺陷
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 坡口未熔合
其它缺陷
编号
焊接方法
编号
WRH02
焊接方法 自动＋手工
焊缝型式 双面
焊接位置 平
重点观察缺陷 坡口边沿未熔合
其它缺陷
编号
WRH02
焊接方法 自动
焊缝型式 焊接位置 单面 平
重点观察缺陷 根部未熔合 (又称单边未焊透)
其它缺陷
编号
WRH05
焊接方法
焊缝型式 焊接位置
重点观察缺陷
其它缺陷
手工
单面
水平
根部未熔合 (又称单边未焊透)
有错边
编号
WRH12
焊接方法
焊缝型式 焊接位置
重点观察缺陷
其它缺陷
手工
单面
水平
根部未熔合 (又称单边未焊透)
编号
焊接方法
焊缝型式 焊接位置
重点观察缺陷
其它缺陷
WT13 WT14
自动
双面
平
坡口边沿未熔合
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 基本金属与垫板之间根 部单侧未熔合
焊缝型式 焊接位置
重点观察缺陷
其它缺陷
WRH02
自动＋手工
单面
平
坡口未熔合
编号
WRH02
焊接方法 自动＋手工
焊缝型式 焊接位置 单面 平
重点观察缺陷 坡口未熔合
其它缺陷