Main Points Of Maintenance Of Threaded Rods And Eye Bolts

• Posted by weigao fasteners March 29, 2021 - Filed in Business - #Hexagon Flange Bolt， Threaded Rods And Eye Bolts  - 663 views

  In order to give full play to all the normal operation of the machinery and equipment, as a small part of the machinery and equipment-the on-time maintenance of the unique screw seems very necessary. Now that the unique screw is necessary, in order to avoid some problems with Hexagon Flange Bolt, you must pay attention to that level in the case of maintenance.

  One, to remove the dirt

  The unique screws must be cleaned with aluminosilicate after heat treatment, and must be hand-washed after cleaning. Therefore, in order to avoid residues and dirt, you must be very careful when washing by hand.

  1. Unique screw accumulation damage

  Everyone sometimes encounters such a situation, the unique screw fades after the heat is measured, and a thick residue appears after being infused with medical ether, which indicates that the surface of the unique screw is not clean. After analysis, it is found that this is due to the unscientific accumulation of unique screws during heating, resulting in mild air oxidation in the quenching oil.

  1. Surface residue

  High-strength screws have not been cleaned up by acid-alkaline cleaning equipment and their dipping tanks are not inspected completely, which will completely cause a milky white residue on the screws, which is phosphated after the first inspection.

  1. Alkali scald

  If the unique screw of the steel material enters the quenching oil without eliminating the surface alkaline substances, it will be found that the screw will be blackened by the heat recovery waste heat and have a well-balanced and leveled oil-black surface. The screws that have not been cleaned and neatly burned on the lower surface of the high temperature, and the damage intensified during quenching. Therefore, it is necessary to completely remove the partial alkali residues that can cause unique screw burns before quenching and tempering.

  1. Poor immersion

  Sometimes it is found that when large-size unique screws are heat-treated with high polymer solution, while cleaning and immersing with alkaline cleaning equipment, the unique screws have already been rusted within the test. Therefore, in order to ensure that the unique screw does not rust during the dipping process, the dipping tap water should be replaced frequently.

  1. Excessive erosion

  Excessive embrittlement of the quenching oil will leave some gray-black patterns during the drying of the high-strength Threaded Rods And Eye Bolts, which is the residue on the surface layer, which is the evolution of the liquid phase in the whole process of heat treatment. Therefore, it is proposed to add new oil.