Why the Quality of the “Zımba” is the Defining Factor in Press Safety and Precision In the demanding world of metal formation, the extrusion stem—locally known as the Zımba—is perhaps the most stressed component in the entire assembly. It acts as the direct bridge between the hydraulic power of the press and the raw metal billet. At Gümüş Makina Sanayi (GMS Machine), we understand that a Zımba is not just a piece of machined steel; it is a critical engineering tool that must withstand immense compressive forces while maintaining perfect axial alignment.

Structural Integrity and High-Pressure Resistance

The primary role of the Zımba is to transmit thousands of tons of pressure to push the billet through the container and the die. If the material quality or the machining of the stem is sub-par, the risk of “buckling” or “mushrooming” increases significantly. High-quality stems produced with the expertise of Gümüş Makina Sanayi ensure that the force is distributed evenly, preventing premature fatigue and protecting the press’s main cylinder from off-center loading.

Precision Machining and Thermal Stability

Extrusion is a high-temperature process. A Zımba must operate within a narrow tolerance range even as temperatures fluctuate. Our engineering approach focuses on:

• Concentricity: Ensuring the stem remains perfectly centered to prevent wear on the container (kovan) liners.

• Surface Finish: Minimizing friction to ensure a smooth stroke during the extrusion cycle.

• Heat Treatment Synergy: Selecting materials that maintain their hardness and structural memory under constant thermal stress.

Enhancing Production Efficiency

A well-engineered Zımba from GMS Machine directly impacts your scrap rate. By ensuring a consistent and stabilized pressure application, the metal flow remains uniform, resulting in profiles with superior dimensional accuracy. This reliability reduces downtime for maintenance and ensures that your production line meets the rigorous standards required by the automotive, construction, and aerospace sectors.