Causes and Repair of Damage to the Outer Wall of Medium-Frequency Pipe Bends
Medium-frequency pipe bending requires specific protective measures, especially for safeguarding the outer wall. If the outer wall sustains damage, it can impede the functioning of the pipe. So, what are the reasons for outer wall damage, and how can it be repaired? Let's explore the causes and solutions for this issue:
Causes:
1. Rough Surface: Surface roughness can result from excessively high or low mold and body temperatures. For instance, if the core mold temperature is too low or the machine body temperature is too low, it can lead to increased surface roughness. High cooling water temperatures can also contribute to surface roughness.
2. Surface Grooves: Surface grooves can result from various factors.
Solutions:
1. In cases where there is significant damage such as breakage or punctures on the outer wall of medium-frequency pipe bends, the damaged pipe wall or hole should be completely removed using a scraper, and the area surrounding the removal should be cleaned with cyclohexanone.
2. Apply a plastic adhesive with good water resistance to the damaged area. Then, remove an arc plate equivalent to twice the damaged area from the corresponding part of the same pipe. Apply adhesive to the inner wall and secure with leads. If there are ribs on the outer wall, remove the ribs around the damaged area of the medium-frequency bend, level the area without ribs, and repair it in the same manner.
3. Reduce cooling water temperature appropriately while also checking for blockages in the water passage, insufficient water pressure, and inspecting factors like heating rings and raw material properties.
4. Check and adjust the curtain outlet, balance the pressure, adjust the nozzle angle to ensure uniform cooling of the pipe, and inspect for any foreign objects or burrs on objects like diameter-setting sleeves and cutters.
Damage to the outer wall of medium-frequency pipe bends can significantly affect the quality and construction of the entire pipeline. To ensure the protection of the pipeline, extra care and protective measures for the outer wall, which is a relatively vulnerable part of the pipe, are essential.
Material Requirements for Medium-Frequency Pipe Bends
Medium-frequency pipe bends are widely used in our daily lives due to their excellent quality and long service life. To ensure the quality of large-scale medium-frequency bends, certain material requirements must be met. Here's a brief introduction to these material requirements:
1. Medium-frequency pipe bends are generally used for welding thin sheets below 6mm, offering the advantage of a visually pleasing weld seam and minimal welding deformation.
2. Argon gas is used as the shielding gas with a purity close to 100. The argon gas flow rate is set at 8-10 L/min when the welding current is 50-150 A and 2-5 L/min when the current ranges from 150-250 A.
3. An optimal welding arc length is between 2-4mm. For stainless steel, 3mm is recommended. An excessively long arc is not conducive to the protection of medium-frequency pipe bends.
4. To prevent the formation of welding pores, it's crucial to clean the welding area of medium-frequency pipe bends if there's any rust or oil contamination.
The information above provides insights into the reasons for damage and repair of the outer wall of medium-frequency pipe bends, as well as the material requirements. Users can use this information to select appropriate materials based on their work environment and requirements, ensuring the best product performance.
