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Cold forge is a metalworking process primarily used to manufacture fasteners like bolts, nuts, and rivets. The process involves preparing suitable wire materials (e.g., low-carbon steel, stainless steel), cutting them into blanks, and forming the desired shapes at room temperature using molds. Post-processing, such as heat treatment or surface coating, may follow to enhance performance.

**Advantages**:  

1. High efficiency, suitable for mass production.  

2. High material utilization with minimal waste.  

3. High precision and excellent surface quality.  

4. Increased strength due to grain refinement.  

5. Cost-effective with reduced processing steps.  

**Applications**:  

1. Fasteners (bolts, nuts, screws).  

2. Automotive parts (piston pins, shafts).  

3. Electronic components (connectors, terminals).  

4. Household appliance parts.  

5. Construction hardware (rivets, anchor bolts).  

In summary, cold forge is widely used in manufacturing for its efficiency, precision, and strength, making it essential in industries like automotive, electronics, and construction.