The Heat Treatment Process Used by a Hardened Screw Manufacturer Explained
In the high-stakes world of industrial extrusion and injection molding, the screw is far more than a spiral piece of metal. It is a high-performance tool that must survive a relentless environment of heat, pressure, and abrasion. For a Hardened Screw Manufacturer , the secret to this survival doesn't lie in the steel itself, but in the fire. The heat treatment process is the metallurgical "rite of passage" that transforms soft, machinable alloys into the rugged components required to keep global production lines moving in 2026. The Crucible of Quality: Why Heat Treatment is Non-Negotiable When raw steel arrives at a factory, it is in its "annealed" or soft state, allowing for precise machining of the flights and roots. However, in its raw form, the steel would deform almost instantly under the operating stresses of a plastic extruder. Heat treatment is used to rearrange the atomic structure of the metal—specifically shifting the carbon atoms to create a "ma...