Ring Forgings  -From Ingot to Precision Rings

Specializing in high-performance forged rings ranging from Φ300mm to Φ8000mm, providing core load-bearing components for high-end equipment.

I. Our Understanding of Ring Forgings: More Than Just a “Ring”

At Zhongfa Flange, we view every ring forging as a structural component bearing critical stresses. It could be a bearing ring on a wind turbine main shaft, a wheel ring on a large rotary kiln, or a compression ring on a chemical vessel. Its performance directly determines the operational precision, load-bearing capacity, and service life of the end equipment.

Unlike simply cut rings, we employ integral forging combined with radial-axial ring rolling. This ensures continuous circumferential distribution of metal fibers, eliminating weld seams and weakened zones. Consequently, it delivers unmatched reliability in fatigue resistance, fracture toughness, and dimensional stability—far surpassing sheet rolling or segmental welding methods.

II. Core Manufacturing Processes: Forging a “Perfect” Ring

Our competitive edge stems from absolute control over these four core processes:

1. Premium Materials and Precision Cutting

Large band saws are used for cutting, precisely controlling ingot weight tolerance—the first step in ensuring uniform metal distribution later on.

2. Multi-Directional Forging and Preforming

On an 8,000-ton press, we repeatedly upsets, punches, and pre-expands the ingot to completely break down the original cast structure, forming uniformly refined grains. This stage establishes the foundation for the ring's intrinsic quality.

3. Radial-Axial CNC Ring Rolling (Core Advantage Process)

This is the soul process that gives the ring its final shape and performance. Our 8m CNC ring rolling machine dynamically adjusts feed rates based on real-time feedback from infrared thermometers. Precise control of diameter and wall thickness tolerances significantly reduces material waste and machining time in subsequent processes.

4. Full-Process Heat Treatment and “Heat-Based Substitution for Cold Processing”

We utilize dedicated gas-fired bench-type heat treatment furnaces to execute precise normalizing, quenching, and tempering processes.

III. Technical Specifications

IV. Where Do These Rings Ultimately Go?

Our ring forgings serve as the “invisible yet critical” core components in numerous high-end equipment:

Wind Power and Clean Energy: As bearing rings and gear ring blanks for offshore wind turbines exceeding 5MW, their internal quality ensures long-term maintenance-free operation.

Construction Machinery & Mining: Used as slewing rings and drums in large excavators, withstanding extreme impact loads.

Aerospace & Defense: Serving as bearing rings for aircraft engine casings and load-bearing structural rings for specialized equipment, demanding near-obsessive purity and consistent material properties.

Chemical & Pressure Vessels: Manufactured as flange ring blanks for hydrogenation reactors and large heat exchangers, ensuring long-term safety under high-pressure hydrogen environments.

Metallurgy and Heavy Equipment: Serving as connecting rings and load-bearing wheel rings on large rolling mill frames, ensuring stable operation under high temperatures and heavy loads.

Next Steps: Submit Drawings to Receive a Feasibility Assessment Report

Please provide your technical drawings or specified technical parameters. Our project engineers will:

Conduct a rapid technical review (response within 24 hours).

Provide detailed process solutions and transparent quotations.

Offer accurate production cycle estimates.