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• The coating on the surface of the welding core is called the coating. The coating of electrode plays a very important role in the welding process. If the photoelectrode without drug skin is used for welding, in the welding process, oxygen and nitrogen in the air will invade a large number of molten metal, metal iron and beneficial elements such as carbon, silicon, manganese oxidation and nitriding to form various oxides and nitrides, and residual in the weld, resulting in slag inclusion or cracks in the weld. The gas in the weld pool may produce a large number of pores in the weld. These factors can greatly reduce the mechanical properties of the weld and make it brittle.

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  pure iron nail2025-08-15 17:20 【pure iron nail】

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• Strictly control the pH value of large roll galvanized wire bath, research shows that the size of the bath pH value directly affects the quality of steel wire coating, improper control of pH value will cause loose coating. When the pH value is greater than 3, the steel wire coating has burr caused by fine dendrites, and the surface is not smooth. The current density is strictly controlled. From the microscopic morphology, the higher the current density, the larger the zinc layer grain deposition, the less dense the corresponding zinc layer.

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  pure iron nail2025-08-15 17:06 【pure iron nail】

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• Galvanized wire is coated with a layer of stable zinc on the outside of the wire, and the zinc layer is used to protect the wire and make the service life of the wire longer. In the production of galvanized wire, the wire should be pickled. Pickling is to use some acid mist or acid liquid to wash away some oxides on the surface of iron, that is, rust, and some other corrosion, to achieve the purpose of cleaning iron, so that zinc will fall off when galvanized.

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  pure iron nail2025-08-15 17:00 【pure iron nail】

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• C, coating uniformity: galvanized layer is basically uniform with copper sulfate solution test etched five times without exposing iron.
  

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  pure iron nail2025-08-15 16:36 【pure iron nail】

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  pure iron nail2025-08-15 16:30 【pure iron nail】

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• 3. Salt water or alkali washing: In order to remove the residual acid in the dissolution tank, it is necessary to carry out salt water or alkali washing treatment on the steel wire to ensure that the surface of the steel wire is clean.
  

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  pure iron nail2025-08-15 15:53 【pure iron nail】

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• The application of cold wire drawing is very wide today. What problems need to be paid attention to in the acceptance of cold wire drawing in galvanizing plant?
  

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  pure iron nail2025-08-15 15:46 【pure iron nail】

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• There are three ways to twist the barbed rope: positive twist, reverse twist, positive and negative twist.
  

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  pure iron nail2025-08-15 15:35 【pure iron nail】

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  pure iron nail2025-08-15 15:29 【pure iron nail】

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  Post time: 24-05-23

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  pure iron nail2025-08-15 15:07 【pure iron nail】

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