A method for preparing a shaft forging of Changzheng Heavy Industry has been granted a patent.
Sep 30,2016
summary:
Long March Heavy Industry's method for preparing a shaft forging has been granted an invention authorization
Recently, Long March Heavy Industry's method for preparing a 42CrMoA shaft forging successfully obtained an invention authorization. To date, the company has accumulated 9 invention patents.
This invention patent solves the defects of traditional methods using 42CrMoA steel ingots for forging and continuous casting billets to produce large shaft products. Through the corresponding technical solutions, the content of gas and non-metallic impurities in the raw materials can be effectively controlled, and the internal looseness, shrinkage, central cracks, bubbles, etc., can be fully welded. At the same time, harmful organizations such as equiaxed crystal zones and columnar crystal zones can be improved, achieving the purpose of grain refinement and improving the fatigue life of forgings. According to the analysis, this method can increase the utilization rate of raw materials for continuous casting billet forging by about 15%, saving about 770 yuan in material cost per ton of forgings, and the economic benefits are significant. This patent lays the foundation for the company's production of high-quality and cost-effective wind power and marine gearbox transmission shafts and other shaft forgings, and improves the company's overall competitiveness in the industry. (He Zhenliang)
Other Information
The directors visited the Long March for guidance
On June 17, Li Jianhong, an external director of China Shipbuilding Group Co., Ltd.,
2024-06-19
Hold special reading classes on party discipline education
On May 14, the Party Committee Theoretical Learning Center Group of Chongqing Changzheng Heavy Industry Co., Ltd.,
2024-05-16
Established in 1967, China Shipbuilding Chongqing Changzheng Heavy Industry Co., Ltd.
2024-04-15
Address: Funiuxi, Dadukou District, Chongqing
Postcode: 400083
Website: https://www.cssccq.com/
Changzheng Trademark
Official WeChat public account