直缝钢管有哪些常用的质检方法呢(直缝钢管有哪些常用的质检方法和要求)

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直缝钢管的质量检验方法有很多种，物理方法是我们最常用到的。物理检验是对钢管的某些物理现象进行测量或检验的方法，一般采用无损检测，检查材料和工件的内部缺陷。目前有超声波探伤、磁力探伤、射线探伤和渗透探伤等方式。

There are many quality inspection methods for straight seam steel pipes, and the physical method is the most commonly used one. Physical inspection is a method to measure or inspect some physical phenomena of steel pipes. Generally, nondestructive testing is used to check the internal defects of materials and workpieces. At present, there are ultrasonic flaw detection, magnetic flaw detection, radiographic flaw detection and penetrant flaw detection.

1、磁力检验

磁力探伤是利用金属零件在磁场中磁场的变化来寻找缺陷。根据不同的检测方法，可分为磁感应法、磁粉法和磁记录法，其中磁粉法应用最为广泛。

1. Magnetic inspection

Magnetic flaw detection uses the change of magnetic field of metal parts in magnetic field to find defects. According to different testing methods, it can be divided into magnetic induction method, magnetic particle method and magnetic recording method, of which magnetic particle method is the most widely used.

2、渗透检查

渗透检验，是利用某种液体的渗透性来发现钢管的缺陷，包括荧光渗透和着色检验探伤，可用于检查磁性和非铁磁性材料表面的缺陷。

2. Penetrant inspection

Penetrant inspection is to use the permeability of some liquid to find the defects of steel pipes, including fluorescent penetrant and dye penetrant inspection, which can be used to check the defects on the surface of magnetic and non ferromagnetic materials.

3、射线探伤

射线探伤，是一种利用射线穿透物质和在物质中衰减的特性，进行探伤的方法。射线检查主要用于检查未焊透、气孔、裂纹、夹渣等缺陷。根据不同射线，可分为X射线探伤、高能射线探伤、γ射线探伤。由于显示缺陷的方法不同，又分为荧光屏观察法、电离法、照相法和工业电视法。

3. Radiographic inspection

Radiographic flaw detection is a method of flaw detection using the characteristics of ray penetration and attenuation in materials. Radiographic inspection is mainly used to check defects such as lack of penetration, porosity, cracks and slag inclusion. According to different rays, it can be divided into X-ray flaw detection, high-energy ray flaw detection γ Radiographic inspection. Due to different methods of displaying defects, there are fluorescent screen observation method, ionization method, photography method and industrial television method.

4、超声波探伤

超声波在金属和其他均匀介质中传播时，由于声波在不同介质界面上的反射波不同，因此可用于内部缺陷的检测。超声波可以检测任何焊件材料和任何部位的缺陷，通常与射线检测结合使用。

4. Ultrasonic flaw detection

When ultrasonic wave propagates in metal and other homogeneous media, it can be used to detect internal defects due to different reflected waves on different media interfaces. Ultrasonic can detect defects in any weldment material and any part, and is usually used in combination with radiographic testing.

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