1.Introduction for Z28-1000 thread rolling machine:

Thread rolling machines are primarily used for forming high-precision external threads, high-strength standard fasteners, anchor bolts, T-screws, and other workpieces with relatively large thread pitches.

Automatic thread rolling machines are specifically designed for radial cold roll forming—an advanced chipless machining process. In this process, rolling tools extrude the material, maintaining continuous metal fibers. The pressure generated during rolling effectively improves surface finish, hardness, and strength of the workpiece. Compared to cutting methods, thread rolling can increase productivity by several times, save material, and facilitate automated production.

Rebar thread rolling machines are a specialized variant of this equipment.

Screw thread rolling machines utilize rolling dies as the forming tool and are exceptionally robust. They are suitable for rolling workpieces made of various carbon steels, alloy steels, and non-ferrous metals, provided the material hardness does not exceed HRC37 (ideally HRC25 or below), with elongation greater than 10% and tensile strength below 100 Kgf/mm². As the material hardness increases, the service life of the rolling dies decreases significantly.

2.Technical parameter for Z28-1000 thread rolling machine

3.Characters for Z28-650 thread rolling machine:

3.1 High Efficiency & Energy Saving
The cold rolling process generates no chips, resulting in high material utilization and low energy consumption compared to conventional machining methods.

3.2 Improved Component Performance
The radial compressive stress and cold work hardening effect produced during rolling significantly enhance the fatigue strength, torsional strength, and wear resistance of the threaded components, thereby extending their service life.

3.3 High Precision & Consistency
Thread profiles are full and well-formed, with excellent diameter consistency. Surface roughness can reach Ry 0.1–0.8 μm, and thread accuracy can meet GB197-63 Grade 2 standards.

3.4 Wide Applicability
Capable of processing workpieces with diameters ranging from Φ4.2 to Φ120 mm (model-dependent) and thread pitches typically from 0.3 to 8.0 mm. Suitable for materials including carbon steel, alloy steel, and non-ferrous metals, provided that elongation > 10% and tensile strength < 1000 N/mm².

3.5 Multiple Operation Modes
Supports manual, semi-automatic, and fully automatic modes. Selected models are equipped with PLC control, human-machine interface (HMI), and automatic feeding systems, facilitating integration into automated production lines.

3.6 Robust Structural Rigidity
The machine body is predominantly constructed from cast steel or high-strength welded structures, ensuring excellent overall rigidity and stable performance even during prolonged, continuous operation.

3.7 Environmentally Friendly & Safe
The process involves no open flames and utilizes water-soluble coolant instead of cutting oil, eliminating coolant contamination risks. The design complies with national construction industry safety and environmental protection standards.

4.Application for Z28-1000 thread rolling machine: