Project Background

A ship equipment factory in Yantai, Shandong, set strict requirements for the reliability, dimensional accuracy, and delivery time of annular forgings during the manufacturing process of large marine equipment. The forging products originally used by the plant exhibited the usual deformation risks under long-term high-load conditions, and the supplier's supply cycles were unstable, affecting the overall assembly progress. To this end, the equipment factory has partnered with Jianing Forging for technical coordination to seek more stable solutions for ring-shaped forgings.

Customer pain points

The core challenges faced by this ship equipment factory include: first, ring forgings must endure continuous vibration and alternating loads in marine equipment, and existing products have risks of fatigue cracking caused by microstructural unevenness after long-term use; Second, forging dimensional tolerances are strictly required, especially inner diameter and roundness deviations that must be controlled within a very small range, while the original supplier's machining accuracy is difficult to stably meet; Third, order delivery cycles are greatly affected by external factors, with multiple delays that disrupt shipyard production plans. In addition, customers also seek better after-sales technical support and customized services to meet the differentiated needs of various equipment models.

Product advantages and solutions

To address these pain points, Jianing Forging offers customized ring forging solutions, with main features as follows:

• Material and process optimization: High-quality alloy steel billets are selected, with multi-directional forging and fine ring rolling processes, resulting in a dense internal structure and uniform grain size of the forging, thereby improving fatigue resistance.
• High-precision machining: Using CNC ring rolling equipment combined with an online inspection system, the inner diameter tolerance is controlled within ±0.5mm, with roundness deviation ≤0.3mm, meeting the assembly accuracy requirements for marine equipment.
• Stable delivery support: Established a standardized production scheduling system, stocked with commonly used specifications of billets, shortened the delivery cycle for regular orders to 20 days, compressed urgent orders to 12 days, and provided a shipping forecast one week in advance.
• Technical Support and Adaptation: Equipped with a professional technical team to assist customers in reviewing forging drawings and process simulation, offering one-stop services from material selection to final heat treatment, and supporting customization of non-standard dimensions.

After multiple rounds of trial production and batch validation, after adopting Jianing's ring forgings, the ship equipment factory reduced equipment failure rates, improved assembly and commissioning efficiency, significantly reduced production downtime caused by delivery issues in customer production plans, and established long-term stable supply cooperation.