通风管道与空调工程常见质量通病及处理！

发布人：http://www.sftfgd.com   发布时间：2023-04-19 10:03:26

风管板材选用不符合要求

The selection of air duct panels does not meet the requirements

1.现象

1. Phenomena

风管板材厚度、表面平整度、外形尺寸等不符合要求，板材有锈斑。

The thickness, surface flatness, and overall dimensions of the air duct board do not meet the requirements, and there are rust spots on the board.

2.原因分析

2. Cause analysis

选用板材时不按设计要求和施工规范进行。

Not following the design requirements and construction specifications when selecting boards.

3.防治措施

3. Prevention and control measures

(1)应按设计要求根据不同的风管管径选用板材厚度。

(1) The thickness of the plate should be selected according to the design requirements for different air duct diameters.

(2)所使用的风管板材必须具有合格证明书或质量鉴定文件。

(2) The air duct sheets used must have a certificate of conformity or quality identification documents.

(3)当选用的风管板材在设计图纸上未标明时，应按照施工规范实施。

(3) When the selected air duct board is not indicated on the design drawings, it should be implemented in accordance with the construction specifications.

济南通风管道咬口制作不平整

Uneven manufacturing of Jinan ventilation pipeline bite

1.现象

1. Phenomena

风管咬口拼接不平整，咬口缝不紧密。

The splicing of the air duct bite is uneven, and the bite seam is not tight.

2.原因分析

2. Cause analysis

风管板材下料找方直角不准确，咬口宽度受力不均匀，风管制作工作平台不平整，风管咬口线出现弯曲、裂纹。

The cutting of the air duct board is not accurately aligned with the right angle, the force on the bite width is uneven, the working platform for air duct production is uneven, and the bite line of the air duct is bent or cracked.

3.防治措施

3. Prevention and control measures

(1)风管板材下料应经过校正后进行。

(1) The cutting of air duct panels should be carried out after correction.

(2)明确各边的咬口形式，咬口线应平直整齐，工作平台平整、牢固，便于操作。

(2) Clearly define the bite form on each side, the bite line should be straight and neat, and the working platform should be flat and firm, making it easy to operate.

(3)采用机械咬口加工风管板材的品种和厚度应符合使用要求。

(3) The variety and thickness of the air duct board processed by mechanical biting should meet the usage requirements.

圆风管不同心，管径变小

The circular air duct is not concentric and the pipe diameter becomes smaller

1.现象

1. Phenomena

风管不垂直，两端口平面不平行，管径变小。

The air duct is not vertical, the two port planes are not parallel, and the pipe diameter decreases.

2.原因分析

2. Cause analysis

制作同径圆风管时下料找方直角不准确，制作异径圆风管时，两端口周长采用划线法，直径变小，其咬口宽度不相等。

When making circular air ducts with the same diameter, the cutting and right angles are not accurate. When making circular air ducts with different diameters, the circumference of the two ports is marked off, resulting in a smaller diameter and unequal bite width.

3.防治措施

3. Prevention and control measures

(1)下料时应用经过校正的方尺找方。

(1) When cutting, a calibrated square ruler should be used to find the square.

(2)圆风管周长应用计算求出，其计算公式为：圆周长＝π×直径＋咬口留量。

(2) The circumference of a circular air duct should be calculated using the formula: circumference=π × Diameter+bite allowance.

(3)应严格保证咬口宽度一致。

(3) Strictly ensure that the width of the bite is consistent.

矩形风管对角线不相等

Unequal diagonal of rectangular duct

1.现象

1. Phenomena

风管表面不平，两相邻表面互不垂直，两相对表面互不平行，两端口平面不平行。

The surface of the air duct is uneven, two adjacent surfaces are not perpendicular to each other, two opposite surfaces are not parallel to each other, and the planes of the two ports are not parallel.

2.原因分析

2. Cause analysis

下料找方不准确，风管两相对面的长度及宽度不相等；咬口受力不均匀。

Inaccurate cutting and square finding, resulting in unequal length and width of the two opposite faces of the air duct; Uneven force on the bite.

3.防治措施

3. Prevention and control measures

(1)板材找方划线后，须核查每片长度、宽度及对角线的尺寸，对超过偏差范围的尺寸应以更正。

(1) After the board is square and marked, the length, width, and diagonal dimensions of each piece must be checked. Any dimensions that exceed the deviation range should be corrected.

(2)下料后，风管相对面的两片材料，其尺寸必须校对准确。

(2) After cutting, the dimensions of the two pieces of material on the opposite side of the air duct must be accurately calibrated.

(3)操作咬口时，应保证宽度一致，闭合咬口时可先固定两端及部位，然后均匀闭合咬口。

(3) When operating the bite, the width should be consistent. When closing the bite, the two ends and the center can be fixed first, and then the bite can be evenly closed.

(4)用法兰与风管翻边宽度来调整风管两端口平行度及垂直度。

(4) Use the flange and duct flange width to adjust the parallelism and verticality of the two ports of the duct.

通风管道与空调工程常见质量通病及处理就从以上内容中讲解完毕了，希望能够给您帮助，更多事项就来我们网站http://www.sftfgd.com留言咨询吧！

The common quality problems and solutions of ventilation ducts and air conditioning engineering have been explained from the above content. We hope they can help you. For more information, please come to our website http://www.sftfgd.com Leave a message for consultation!