Design and Manufacturing of Drywall Screw Carbide Dies

Drywall screws are indispensable fasteners in building and decoration, with their quality and performance directly determined by the manufacture of the dies.

I. Die Structural Design

Thread Forming Section

• Precision screw thread profile design ensures self-tapping performance.
• The thread angle is typically 45°-48° for optimal cutting effects.
• The thread pitch has to consider the characteristics of drywall material.

Drill Point Design

• Efficient cutting geometric structure is adopted.
• The drill point angle generally controlled between 25°-30°.
• This ensures quick penetration while minimizing the risk of cracking in the drywall.

II. Material Selection

Mainly involves high-performance carbide, such as ultrafine grain carbide.

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• Cobalt content is 8%-10%, balancing hardness and toughness.
• The grain size is controlled within the scope of 1-2 micrometers.

Performance Requirements:

• Hardness: HRA89-91
• Flexural Strength: ≥2000MPa
• Outstanding wear resistance

III. Quality Control

Key Dimension Testing

• Accurate measurement of thread parameters
• Inspection of drill point angle
• Surface Roughness Detection

Performance Testing:

• Hardness Test
• Evaluation of Wear Resistance
• Service Life Verification

IV. Surface Treatment

Selection includes coatings such as TiN and TiAlN.

• Enhancing wear resistance and service life
• Lowering friction coefficient

V. Application Value and Practical Guidelines

Efficient Installation Advantage:

Drywall screws demonstrate significant construction advantages in the field of drywall installation. Their unique self-tapping design eliminates the need for pre-drilling, greatly improving construction efficiency. Meanwhile, their optimized thread design ensures connection strength, effectively preventing the risk of fastened objects falling off.

Standard Installation Requirements:

• Fixing Distance: 200mm for board edges, 300mm for board centers.
• Anti-corrosion treatment: necessary when the rust-proof paint is required.
• Specification Selection: choose the proper model and length according to the actual load.
• Installation Depth: ensure the screw embedment meets the design requirements.

Product Type Selection:

• Screw for Light Steel Frame: made of stainless steel, no need for additional anti-corrosion treatment.
• Screw for Wooden Frame: features a special thread design, providing excellent grip strength.
• Special Purpose: choose specific screws like expansion types based on specific applications.

By choosing and using self-tapping screws properly, one can not only improve construction efficiency but also ensure the quality of installation and safety during usage. This fully demonstrates the significant value of high-quality screw dies in the field of building and decoration.

Adherence to the aforementioned design and manufacturing requirements ensures the high quality and stability of drywall screw carbide dies. High-quality dies form the foundation of manufacturing high-performance drywall screws, which play a vital role in improving the quality of building and decoration.