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Types of common accumulation of internal burrs when used HFW pipe equipments produces welded pipes

Types of common accumulation of internal burrs when used HFW pipe equipments produces welded pipes

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  • Release time:2022-03-18 11:30
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【概要描述】refers to the lumps formed by the fusion of molten metal droplets during the production of used HFW pipe equipments. Common types of accumulation are divided into small particle accumulation and large particle accumulation.

Types of common accumulation of internal burrs when used HFW pipe equipments produces welded pipes

【概要描述】refers to the lumps formed by the fusion of molten metal droplets during the production of used HFW pipe equipments. Common types of accumulation are divided into small particle accumulation and large particle accumulation.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2022-03-18 11:30
  • Pvs:
Detail

What is the accumulation of internal burrs when the used HFW pipe equipments produces welded pipes?

 

Accumulation: refers to the lumps formed by the fusion of molten metal droplets during the production of used HFW pipe equipments. Common types of accumulation are divided into small particle accumulation and large particle accumulation.

 

 

 

Small particle build-up: Small particle build-up is very common in high-frequency welding. From the appearance point of view, it is formed by the accumulation of many small particles. The used HFW pipe equipments will produce sesame-sized particles with spark splashing during the high-frequency welding process. If it cannot be eliminated in time, the small particles will continue to aggregate to form blocks and stay above the inner burr cutter. If it is too large to a certain extent, it will cause the inner burr knife bar to be unable to lift normally or block the inner hole of the inner burr ring knife, and it will not be able to scrape normally.

 

When small particle buildup occurs, it is generally solved by adjusting the cooling air pressure and the position of the tuyere on the inner burr blade. The image below shows the small particle buildup that often forms on the inner burr shank.

 

Used HFW pipe equipments

 

Large particle accumulation: In terms of appearance, the large particle accumulation is composed of larger particles, and the particles are firmly combined. Compared with small particle accumulation, the formation of large particle accumulation is faster, and it is more likely to cause poor scraping of the internal burr of the used HFW pipe equipments, and even cause normal welding and shutdown. Large particle build-up can be divided into knife-bar build-up and inner burr-knife build-up according to the location of formation.

 

Tool bar buildup: It is mainly formed on the tool bar or protective sleeve below the welding V angle, which is caused by excessive welding power. The greater the welding power, the stronger the fluidity of the molten metal at the edge of the plate. During the high-frequency welding process, a large amount of extruded molten metal drips onto the cutter bar or protective sleeve, forming large particle buildup, which seriously affects the normal operation of the cutter bar. Raised, resulting in poor scraping of internal burrs.

 

Used HFW pipe equipments

 

Internal burr knife build-up: mainly exists in the position of the internal burr knife or the upper idler, which is also caused by excessive welding power. The higher the welding power is, the softer the internal burrs will be. During the scraping process, the internal burrs will continue to adhere to the internal burr knife, and a large number of accumulations will form in the position of the internal burr knife or the upper idler in a short period of time, resulting in internal burr scraping. The quality is seriously degraded.

 

Used HFW pipe equipments

 

The above are the common types of accumulation of internal burrs when used HFW pipe equipments produces welded pipes, which can be divided into small particle accumulation and large particle accumulation. Burr knife accumulation.

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