Improved process to prevent air bubbles from appearing during construction of building fasteners
2025-07-23 10:03:40
During the manufacturing process of construction fasteners, bubbles can form, leading to rounded sand holes on the surface or inside the final product. These defects can compromise the structural integrity and overall quality of the fasteners. To enhance its brand reputation and ensure high-quality output, Defa Casting has invested in advanced technology and process improvements.
To effectively address this issue, it's essential to first identify the root causes and then implement targeted solutions. Here are the main reasons why air holes occur in construction fasteners:
1. The raw materials used in the furnace are wet, rusty, or oily, causing excessive gas content in the molten iron and severe oxidation.
2. The iron outlet, ladle, and other components are not properly dried before use, leading to moisture contamination.
3. The pouring temperature is too low, preventing gases from escaping during the casting process.
4. High aluminum content in the charge material can lead to hydrogen porosity.
5. Poor gas permeability in the sand mold, combined with high moisture levels and excessive coal dust or organic matter, results in trapped gases that are difficult to release during pouring.
To prevent these issues and improve the yield of defect-free products, Defa Casting has refined its production techniques and implemented strict quality control measures for both raw materials and sand molds. This includes ensuring proper drying of all components, maintaining optimal pouring temperatures, and using high-quality molding sands with controlled moisture and additive levels.
By addressing these key factors, Defa Casting continues to deliver reliable and high-performance construction fasteners that meet industry standards. For more detailed information, visit http://...
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