In the field of industrial vehicle manufacturing, the performance of carbon steel forgings directly affects the forklift's load-bearing capacity and service life. A forklift equipment factory in Baotou, Inner Mongolia (hereinafter referred to as "the factory") set strict technical requirements for key structural components when upgrading its production line. With its mature carbon steel forging technology, Jianing Forging provides customized solutions that improve product reliability and consistency.

Case Summary

The factory mainly produces counterbalance forklifts, whose core components such as forks and mast connectors must withstand high-frequency, heavy load impacts. Forgings supplied by the original supplier had issues such as uneven hardness and internal microcracks, leading to early failure after assembly. After cooperating with Jianing Forging, the factory increased the forging pass rate from 85% to over 98%, while also reducing rework costs for subsequent processes.

Customer pain points

• Insufficient material stability: The original forgings have coarse grains and excessive inclusions, with hardness fluctuations after heat treatment exceeding HRC 5, affecting wear performance.
• Excessive machining allowance: low forging accuracy, with a single side allowance exceeding 3mm, resulting in longer machining time and faster tool wear.
• Poor batch consistency: Large dimensional dispersion between different batches of products requires frequent tooling adjustments during assembly, affecting production cycles.

Product advantages

To address these pain points, Jianing Forging provides a systematic solution from three dimensions: material selection, process optimization, and quality control:

• Preferred material system: Medium carbon alloy structural steel (such as 40Cr or 42CrMo) is used, refined through microalloying to refine grains, strictly controlling sulfur and phosphorus content to help maintain material purity.
• More accurate forging process: Uses closed die forging technology, with single-side allowance controlled within 1.2mm, combined with multi-heat forging and temperature-controlled cooling to eliminate forging defects and achieve uniform streamline distribution.
• Full-process inspection: Each batch of forgings undergoes ultrasonic flaw detection and hardness sorting, hardness tolerances are controlled within HRC 3, and dimensional tolerances meet IT10 level requirements.

The delivered carbon steel forgings passed 30,000 fatigue tests after assembly, showing no cracks or deformation, earning high recognition from the plant's technical department. Jianing Forging will continue to provide highly consistent, long-lasting forgings for the industrial vehicle industry.