Quality Steel Square Forging for Hot Rolling and Processing Parts

Jiangsu Weirun Forging Co., Ltd.
Since its inception in 2001, Jiangsu Weirun Forging Co., Ltd. has stood as a beacon of innovation, being one of China's pioneering enterprises in the realm of alloy steel smelting and the crafting of diverse forged products. It is formed through the synergistic union of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd.
At the core of Jiangsu Weirun's operations lies a robust portfolio that spans alloy steel smelting, electroslag remelting, forging, and mold manufacturing. Over the years, Weirun has meticulously sculpted a comprehensive industrial chain that seamlessly integrates material recycling, smelting, electroslag casting, and precision mold machining, reinforcing its stature both domestically and on the global stage.
Boasting a sprawling 60,000-square-meter factory, Jiangsu Weirun is equipped with three 1-ton, one 3-ton, and one 10-ton electroslag furnaces, complemented by two 2-ton, one 1-ton, and one 0.75-ton air hammers. The facility also features advanced 5-ton and 8-ton electro-hydraulic hammer production lines. This powerhouse of manufacturing is bolstered by an array of mechanical processing and heat treatment apparatus, sophisticated spectrometry technology, and comprehensive physical and chemical testing equipment. With fixed assets valued at 153 million yuan and an impressive industrial output of 300 million yuan, the company proudly employs over 200 skilled individuals, including more than 20 technical experts. Weirun's excellence is further underscored by its ranking among the top fifty enterprises for annual sales and tax contributions in Danyang City.
Propelled by a relentless drive for advancement, Jiangsu Weirun has strategically infused its ranks with technical talent and engaged in dynamic collaborations with esteemed universities and research institutions across China. This commitment to innovation and excellence has yielded 5 nationally authorized invention patents and 3 utility model patents, underscoring the company's leadership in technological progression.
Possessing an annual production capacity exceeding 30,000 tons of steel ingots and a forging prowess of 15,000 tons, Jiangsu Weirun's offerings are integral to a myriad of industries, including wind power, chemical engineering, machinery, automotive, and more. Embracing the credo of 'pursuing excellence and building a world brand,' the company strives for global integration, adhering to international standards and earning certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a distinguished supplier of forged products, Weirun is unwavering in its commitment to professionalism, endeavoring to deliver unmatched service and expertise to its valued clientele.

• What is the difference between forging and casting?

  Forging: It is the process of transforming a solid from one shape to another. Casting: It is the process of transforming a shapeless liquid metal into a solid with a shape. The so-called casting is the process of casting molten metal into a model to obtain a casting. The casting profession focuses on the metal melting process and the control of processes during the casting process. Forging is a plastic forming process in the solid state, which can be divided into hot processing and cold processing. Forgings include extrusion, drawing, roughening, punching, and so on. Casting is a solid liquid solid process, while forging is a solid to solid process where a solid can change its shape into another shape at high temperatures. There are still differences in the shape process and process of the two.

• How to choose high-quality forgings?

  In the quality inspection of forgings, there are mainly external observation methods and internal inspection methods. The appearance method, as the name suggests, is to observe the appearance of the product, such as the shape, geometric dimensions, surface condition, etc. of the forging, in order to understand whether it meets the standards and whether there are external defects. Specifically, it is to check whether the external dimensions of the forging meet the specifications and whether there are defects on the surface, such as cracks, wrinkles, bubbles, indentations, pits, impurities, scratches, etc. on the surface of the forging. Internal testing mainly involves analyzing the chemical composition, macroscopic and microscopic structures, and mechanical properties of forgings. This inspection process requires the use of specialized instruments for high magnification inspection, with the aim of checking for any phenomena such as fractures and shrinkage within the forging, as well as defects such as dendrites and white spots, disordered flow lines, and throughflow. It also includes the tensile strength, ductility, hardness, plasticity, and heat resistance temperature of the forging.

• What are the characteristics of the forging process for blank forgings?

  The forging process of circular forgings mainly consists of the following processes: pier roughening, elongation, punching, and expanding. The difference between free forging and ring rolling processes is mainly in the process of expanding holes. In the production of ring forgings, free forging is usually used to expand the hole with a horse screw, while ring rolling is mainly used to expand the hole with rolling.