What is a diameter-reducing machine?

Release Date:

2022-08-16 16:20

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A diameter-reducing machine is a non‑cutting machining device that offers advantages such as low production efficiency, simple processes, convenient operation, material savings, and stable quality. It employs hydraulic technology to feed round steel, threaded steel, and similar workpieces into specialized dies for cold pressing. So, what exactly is a diameter-reducing machine?

1. The steel density in the compressed region can be significantly increased, thereby enhancing the material’s compressive strength. Meanwhile, its ductility and impact toughness remain unchanged, ensuring consistent strength between the threaded section and the shank. This addresses the drawback of reduced pressure resistance and impact toughness caused by machining.

2. The diameter‑reducing machine is a non‑cutting machining device characterized by low production efficiency, simple processes, ease of operation, material savings, and stable quality. It employs hydraulic technology to feed round steel, threaded steel, and similar workpieces into specialized dies for cold‑pressing. This process significantly increases the density of the compressed material, thereby enhancing its compressive strength. Importantly, ductility and impact toughness remain unchanged, ensuring consistent strength between the threaded portion and the shank. This effectively addresses the drawback of reduced pressure resistance and impact toughness that typically results from turning operations.

3. The diameter-reducing machine is an ideal piece of equipment for producing large-diameter round steel, anchor bolts, double-ended construction screws, high-speed bridge screws, mining anchor bolts, foundation bolts, and long‑rod screws. It can compress the material in a single pass to the desired thread‑rolling diameter, while increasing both its density and length, thereby enhancing the tensile strength of anchor rods. It serves as an alternative to lathe‑based threading.

4. Compared with conventional lathes, necking machines offer advantages such as faster machining speeds, superior surface finish, and greater dimensional accuracy; they can also extend material length, reduce material waste, and lower costs.

What are the advantages of a diameter-reducing machine?

1. This reducer offers the advantage of maintaining ductility and impact toughness, ensuring consistent strength between the threaded portion and the shank. It addresses the drawback of screw‑making machines—where lathe peeling reduces both pressure resistance and impact toughness—and serves as a viable alternative to conventional lathe‑peeled fasteners.

The diameter-reducing machine is suitable for producing large-diameter round steel, anchor bolts, double‑ended construction screws, and high‑speed bridge screws. It is an ideal piece of equipment for manufacturing mining anchor bolts, anchor bolts, and long‑rod screws. This machine can compress the material in a single pass to achieve the desired thread‑rolling diameter, increasing both the material’s density and length, thereby enhancing the tensile strength of the anchor bolts.

What are the precautions for using a diameter-reducing machine?

1. If condensation forms on the contactor due to changes in humidity, measures must be taken to prevent phase-to-phase short circuits, and care should be taken to clean any dirt from the pole faces of the iron core.

2. Remove dust from the diameter‑reducing machine. Pay particular attention to cleaning away dirt between the incoming and outgoing leads to prevent phase-to-phase short circuits. Also, be sure to clean any dirt from the pole faces of the iron core.

3. When the contacts of the reducing machine are found to be severely worn and no longer usable, they should be promptly replaced with new contacts or a contactor of the same type.

The working principle of a small diameter-reducing machine is introduced.

What are the common malfunctions of a diameter-reducing machine and their troubleshooting methods?