Here’s a professional English description of the production process for automotive parts made according to DIN 928:2013, which refers to square weld nuts commonly used in automotive assemblies.
Our carbon steel weld nuts are engineered for strength and durability, making them ideal for a variety of industrial applications. These high-quality carbon steel weld nuts provide excellent performance in environments requiring robust fastening solutions. Thanks to their superior resistance to corrosion and wear, our weld nuts are ideal for use in automotive, construction, and machinery sectors. Furthermore, designed for easy welding to surfaces, they ensure secure, long-lasting connections for a wide range of applications, making them a reliable choice for various industries.
Production Process of DIN 928:2013 Square Weld Nuts
Material Selection
Low-carbon steel or alloy steel sheets/coils (commonly Q235, 1010, or 1008) are selected according to the mechanical and weldability requirements.
Blanking & Stamping
Steel is first cut into square blanks using stamping dies, and then the base shape of the nut is formed through progressive stamping operations.
Piercing & Tapping
First, a center hole is punched, and then internal threading is created through tapping or thread forming, ensuring compliance with the DIN 928 standard.
Projection Forming
Weld projections (typically 4 points) are formed on the nut surface to enable strong spot welding onto sheet metal during assembly.
Heat Treatment (optional)
Depending on application needs, nuts may be heat-treated to improve strength and hardness.
Tratamiento superficial
To enhance corrosion resistance, various coatings can be applied:
- Zinc plating (blue/white)
- Phosphating
- Dacromet or Geomet coating
- Black oxide
Inspection
To ensure compliance with DIN 928:2013 standards, we first conduct dimensional inspection and thread gauging. Additionally, we perform hardness testing to guarantee that all products meet the required specifications and quality standards. Additionally, we verify the weld projection integrity, ensuring that every aspect meets the required specifications for optimal performance.
Packaging
Finished nuts are optically sorted (if required), packed in bulk or custom packaging, and labeled with traceability information.
