Heavy-Duty Steel Forgings with ASTM Standards for Industrial Use

Jiangsu Weirun Forging Co., Ltd.
Established in 2001, Jiangsu Weirun Forging Co., Ltd. has become a pioneering force at the heart of China's alloy steel smelting and forging industry. As a strategic union of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., our company is a trailblazer, renowned as one of the country's earliest manufacturers of diverse forged products. We proudly champion a legacy built on a foundation of innovation, excellence, and a relentless pursuit of quality.
Jiangsu Weirun excels as a vanguard in alloy steel smelting, electroslag remelting, forging, and mold manufacturing. Over years of dynamic growth, we have cultivated a comprehensive industrial chain that elegantly merges material recycling, smelting, electroslag casting, forging, and precision machining of molds on both domestic and global platforms. Our steadfast dedication lies in providing unmatched quality and exemplary service, setting us apart in the industry.
Spanning an expansive 60,000 square meters, our state-of-the-art facility is equipped with cutting-edge electroslag furnaces, including three 1-ton, one 3-ton, and an impressive 10-ton unit. Our forging operations are powered by two 2-ton air hammers, a 1-ton air hammer, and a 0.75-ton air hammer, complemented by mechanized electro-hydraulic hammer lines of 5 and 8 tons. Our advanced mechanical processing and heat treatment equipment, alongside spectrometers and a comprehensive array of testing devices, form the backbone of our formidable industrial output valued at 300 million yuan. Supported by fixed assets of 153 million yuan and a dedicated team of over 200 skilled professionals, including 20 technical experts, we proudly rank among Danyang City's top fifty in sales and tax contributions.
With a vision for future growth, Jiangsu Weirun has adopted a strategic approach to talent acquisition, forming alliances with esteemed domestic universities and research bodies to foster continuous innovation. Our unwavering pursuit of technological advancement has resulted in the achievement of 5 national patents for inventive breakthroughs and 3 utility model patents, underscoring our commitment to pioneering progress in the industry.
With a remarkable annual production capacity of over 30,000 tons of steel ingots and a forging capacity of 15,000 tons, Jiangsu Weirun is poised to serve a diverse spectrum of industries, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by the ethos of 'pursuing excellence and building a world brand,' we are resolute in our alignment with international markets and standards, proudly holding esteemed certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a leading provider of forged products, Weirun is steadfast in delivering unparalleled quality and service, embodying professional expertise that meets the discerning demands of our global 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.