The "gradient hardening forging steel ball" developed by Haoyang Casting and Forging in Jinan has achieved a significant breakthrough: the wear resistance and service life have been increased by 80%, and the surface hardness reaches HRC 62-65. It adopts the "double-frequency induction quenching + digital twin production" technology, with a raw material utilization rate of 95% and a tonnage steel energy consumption reduction of 18%. This product has broken the dependence on imports, outperforming international brands in terms of performance. It has received 5,000 tons of orders and has increased annual output value by 120 million yuan. The enterprise has jointly established a laboratory with Shandong University to promote the transformation of traditional forging industry towards intelligence and greenness, and to assist Zhangqiu in building a wear-resistant material industrial cluster.