Innovative Steel Square Cylinder for Hot Forging and Manufacturing

Jiangsu Weirun Forging Co., Ltd.
Established in 2001, Jiangsu Weirun Forging Co., Ltd. is a pioneering enterprise in China, formed by the esteemed Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. We proudly stand as one of the nation's earliest specialists in alloy steel smelting and the manufacture of an extensive array of forged products.
Our company is at the forefront of alloy steel smelting, electroslag remelting, forging, and die manufacturing projects. Over the years, we have developed a comprehensive industrial chain that includes material recycling, high-quality smelting, sophisticated electroslag casting, precision forging, and meticulous machining of molds, all of which extend both domestically and internationally.
Our expansive 60,000 square-meter factory is equipped with state-of-the-art machinery including three 1-ton, one 3-ton, and one 10-ton electroslag furnaces. We operate two 2-ton, one 1-ton, and one 0.75-ton air hammers, alongside mechanized electro-hydraulic hammer production lines of 5 and 8 tons. Our extensive array of equipment also boasts advanced mechanical processing and heat treatment tools, spectrometers, and diverse physical and chemical testing facilities. With fixed assets valued at 153 million yuan and an industrial output peaking at 300 million yuan, our team of over 200 skilled employees, including more than 20 technical experts, ranks among the top fifty enterprises in Danyang City for annual sales and tax revenue.
In a bid to propel our company's growth, we have proactively recruited a host of technical talents and forged strategic partnerships with prominent domestic universities and research institutions. We are committed to technology adoption and innovation, having achieved 5 national authorized invention patents and 3 utility model patents.
Boasting an impressive annual output capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products are integral to sectors such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. With a steadfast commitment to excellence and the pursuit of a global brand reputation, we embrace international integration, adhering to global standards. Our certifications include ISO9001, China CCS, France BV, and Germany TUV. As a distinguished supplier and service provider of forged products, Weirun is dedicated to our ethos of professionalism, persistently aiming for unparalleled expertise, and delivering premium services to our 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.