Application

This 4-station cold heading machine is specially engineered to manufacture long bolts up to 250 mm, widely used for producing structural bolts, anchor bolts, heavy-duty fasteners applied in construction, engineering machinery, wind power, petrochemical and heavy equipment industries. It is the ideal forming equipment for long-shank bolt mass production.

Core Advantages

1. Reliable Forming Stability for Extra-Long Workpieces The 4-station progressive forming design supports continuous cold heading for bolts with length up to 250mm. Compared with multi-stage separate processing, one-time forming reduces repeated clamping errors, avoids bending and deformation problems that frequently happen on long blanks, and guarantees straightness of long bolt shanks.

2. High Dimensional Precision Optimized mould positioning and stable feeding mechanism ensure consistent dimensional tolerance for 250mm long bolts. The finished bolts feature uniform material flow during cold forging, stable head forming precision, and excellent concentricity between bolt head and shank, meeting strict requirements for heavy-load fasteners.

3. Higher Production Efficiency Progressive 4-station processing completes multiple forming procedures in a single machine cycle. It eliminates intermediate handling and secondary repositioning required by traditional separate equipment, greatly boosting output and lowering labor cost for long bolt production.

4. Improved Material Utilization Cold forming technology processes metal wire without cutting off large amounts of material chips. It saves raw material for 250mm long bolts, reduces material waste compared with lathe machining, and cuts down overall production cost.

5. Enhanced Mechanical Properties of Finished Bolts Cold heading preserves the continuity of metal fiber structure of the long bolt. The formed bolts gain higher tensile strength, yield strength and fatigue resistance, which is critical for long structural bolts working under heavy load.

6. Stable Feeding System Adapted for Long Wire Rod Specially customized long-length feeding mechanism is designed for 250mm bolt blanks. It delivers straight wire steadily into each station, preventing blank jamming, shaking or offset during forming.

7. Convenient Operation & Low Maintenance Equipped with PLC control, real-time monitoring and fault alarm functions. Operators can adjust parameters for different long bolt specifications quickly. Key components adopt heat treatment to extend service life and reduce downtime.

8. Wide Product Flexibility This machine can produce various types of long bolts within 250mm range, such as anchor bolts, hex head bolts, foundation bolts and custom heavy fasteners, supporting flexible switching among multiple product specifications.