1.Introduction for Z28-650 thread rolling machine:

Thread Rolling Machine Applications

Thread rolling machines are primarily designed for producing precision external threads on a variety of workpieces, including high-strength standard fasteners, anchor bolts, and T-screws—particularly those with relatively large thread pitches.

Automatic Thread Rolling Machines & Cold Rolling Process

Automatic thread rolling machines are specifically engineered for radial cold roll forming. This cold rolling process represents an advanced chipless machining technology. During the process, rolling tools extrude the workpiece material, ensuring that the metal fibers remain continuous and unbroken. The pressure generated during rolling effectively improves surface finish, hardness, and overall strength of the workpiece. Compared to conventional cutting methods, thread rolling can increase productivity several times over, significantly reduces material waste, and is readily adaptable to automated processing.

Rebar Thread Rolling Machines are a specialized variant of this equipment.

Screw Thread Rolling Machines & Material Suitability

Screw thread rolling machines utilize rolling dies as the forming tool and are built with exceptional robustness. They are suitable for processing a wide range of materials, including various carbon steels, alloy steels, and non-ferrous metals, provided the following material conditions are met:

Hardness: not exceeding HRC37 (ideally HRC25 or lower)

Elongation: greater than 10%

Tensile strength: below 100 Kgf/mm² (approx. 980 N/mm²)

2.Technical parameter for Z28-650 thread rolling machine

3.Characters for Z28-650 thread rolling machine:

3.1 High Efficiency and Energy Saving: Utilizing the cold rolling process, no chips are produced, resulting in high material utilization rate and low energy consumption.

3.2 Enhancing Component Performance: The radial compressive stress and cold work hardening effect generated during the processing process significantly enhance the fatigue strength, torsional strength and wear resistance of the component.

3.3 High Precision and Consistency: The thread profile is full and plump, the diameter consistency is good, and the surface roughness can reach ‌Ry 0.1–0.8 μm‌, with a precision level of ‌GB197-63 Grade 2‌.

3.4 Wide Applicability: Capable of processing workpieces with diameters ranging from ‌Φ4.2 to ‌Φ120 mm‌ (depending on the model); the pitch range is typically ‌0.3–8.0 mm‌; suitable for materials such as carbon steel, alloy steel, and non-ferrous metals (elongation > 10%, tensile strength < 1000 N/mm²)

3.5 Multi-mode Operation: Supports three working modes: manual, semi-automatic, and automatic. Some models are equipped with PLC control, human-machine interface, automatic feeding, and other functions.

3.6 Strong structural rigidity: Mostly uses cast steel bodies or high-strength welded structures to ensure processing stability

3.7 Environmental Safety: No open flames, no cutting fluid contamination (using water-soluble coolant), in compliance with national construction industry safety standards

4.Application for Z28-650 thread rolling machine: