Contact: Cheng Huiqiang
Address：No. 333, Jinxian Road, Jinjiaba, FENHU Town, Wujiang District, Suzhou City, Jiangsu Province
Method for quality inspection of polyethylene anticorrosive tape
Method for quality inspection of polyethylene anticorrosive tape. Anticorrosive tape is an adhesive tape used for anticorrosive winding. It is resistant to true bacteria and bacterial strains and has many advantages. It is gradually favored by various industries. Among them Polyethylene anticorrosive tape is a widely used product, so what are its specific advantages? Let me see what its advantages are.
Polyethylene anticorrosive tape has strong adhesiveness and can achieve self-fusion, waterproof, gas penetration, and good sealing. In addition, it has high electrical insulation, excellent aging resistance and strong resistance to ultraviolet radiation. And his ability to resist soil stress damage and strong impact resistance. These are its advantages, but the important thing is that it is green and environmentally friendly, without environmental pollution and three wastes.
The quality standards of tape anticorrosive coating include the following aspects:
1) Appearance: The quality of the appearance determines the winding quality. Therefore, it is required that the surface should be flat, overlapped uniformly, no wrinkles, no bulges, and no rupture points are allowed. The above-mentioned defects can be avoided as long as the tricks are suitable and carefully operated. However, air bubbles sometimes occur during the winding process, which often occurs when the weather is hot and the sun is winding the tape. Because the tape itself has a certain degree of elasticity and self-repairing ability, these bubbles can disappear by themselves, and this kind of bubbles may not be a quality problem; if bubbles are generated, like wrinkles, repair should be eliminated.
一分彩2) Thickness: The thick aromatic index has a great effect on the quality of anticorrosion, especially the increase of the thickness of the rubber layer can enhance the anticorrosive ability. When the tape is determined and its structure is determined, its thickness is determined. Therefore, by measuring the thickness of the tape in advance, the total thickness can be determined. However, in order to prevent insufficient thickness caused by the use of different batches of tape, the inspector can use a thickness gauge to measure the pipeline after construction. It is also easy to determine the EDM leak detection voltage.
一分彩3) Adhesion (peel strength): Adhesion refers to the adhesion of the anticorrosive layer to the steel pipe. It directly relates to the quality of the anticorrosive layer, and its size directly affects the water permeability. So make sure you have enough cohesion. The field test is performed in accordance with the DIN30670 standard, that is, a 10mm wide band is cut in the ring direction with a knife, and then slowly opened at a 90 ° angle with the pipe wall using a spring scale. 8.0N / cm, this test should be performed after winding the tape for 2 hours, and 3 places per kilometer of anticorrosive pipeline. Three sets of data were measured for each batch of tape.
4) Electric spark leak detection: This indicator mainly controls the defects during construction or certain defects in the tape. The pipeline must be inspected across the entire line. The leak detection voltage is the same as the petroleum asphalt leak detection formula. The leak detector's moving speed does not exceed 0.3m / s. All discharge places should be marked and repaired with tape. Record the test results, including the shape, nature and location of defects, repair processes, etc., as the pipeline completion data.
Contact: Cheng Huiqiang
|Contact : Li Cong|
|Address: No. 333, Jinxian Road, Jinjiaba, Wujiang District, Suzhou, Jiangsu|