Inherit the glory of the 130th century and start a journey of new quality. On the 130th anniversary of China Railway Shanqiao Group Co., Ltd., a subsidiary of China Railway Industry, Henan Weihua's intelligent half-gantry machine successfully helped China's pure steel frog production line to be officially put into operation, helping China Railway Shanqiao become the largest and most advanced comprehensive manufacturing base for pure steel frog smelting, casting, heat treatment and machining in China, contributing Weihua's strength to the high-quality development of China's transportation industry.


The frog is an important component on the railway switch that plays a key role in changing the track of the train. It is a device that allows the train wheels to cross from one rail to the other. As the earliest manufacturer of bridge steel structures and railway turnouts in China, China Railway Shanqiao is known as "the cradle of China's steel bridges and the hometown of turnouts". It has witnessed the development of China's railways from scratch, from existence to bigness, and from big to strong, and has always led the technological progress and industry development direction of China's railway turnouts.
The China pure steel frog production line put into operation this time adopts the advantages of intelligent manufacturing technology such as high-end sensors, control system integration, and 5G industrial network in its equipment to minimize the content of impurities, inclusions and oxides in the molten steel, improve the purity of the material, and achieve a national environmental performance level of B or above. These new technological advantages and features are the result of the “two-way rush” between Henan Weihua and China Railway Shanqiao.

The main function of Weihua's intelligent half-door machine is to carry dust removal equipment to promptly absorb and clean the dust, smoke and other substances generated during ladle pouring.
In order to meet the needs of production efficiency, safety and good human-computer interaction, and to ensure that the dust removal equipment and the metallurgical crane remain in a follow-up state, Weihua's intelligent half-door crane adopts two sets of comprehensive range laser detection technology, detect the distance between equipment in real time, and always control the dust removal truck and ladle within the established safety and process limits. At the same time, an absolute encoder is used for positioning to ensure safe alignment without manual control and operation, ensuring the cost, efficiency and accuracy of equipment operation.


In addition, in the face of the complex environment of high-temperature casting during the production process, Weihua's intelligent half-door machine adopts a prefabricated structure, with a heat insulation layer installed under the main beam. All electrical components are high-temperature resistant and the cables are made of flame-retardant materials, ensuring the service life of the intelligent half-door machine.
The smoke, dust, etc. generated during the manufacturing process can be directly discharged indoors after timely treatment by dust removal equipment, which can meet the national indoor gas emission standards for industrial plants and improve the stability and reliability of railway frogs.


Ride on the momentum and gather strength together. The delivery of new products is an important milestone in the cooperation and development of Henan Weihua and China Railway Shanqiao. In the future, Henan Weihua will continue to give full play to the advantages of "intelligent, digital, green, and customized" and use innovative technology, excellent products and high-quality services to contribute Weihua's wisdom and strength to building a manufacturing, quality and transportation power.