Custom Steel Bevel Gear Solutions for Automotive Differential Systems

Jiangsu Weirun Forging Co., Ltd.
Founded in the year 2001, Jiangsu Weirun Forging Co., Ltd. stands as an extraordinary alliance between Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a prominent market leader in China, Weirun has set itself apart with unmatched expertise in alloy steel smelting and a diverse portfolio of forged products. From the very inception, our unswerving commitment to pioneering solutions and our unwavering dedication to superior quality have forged our esteemed reputation in the industry.
Our company stands as a paragon of superior quality, embarking on a wide range of projects including alloy steel smelting, electroslag remelting, forging, and mold design. We have meticulously crafted an all-encompassing industrial chain that flawlessly integrates every aspect from material recycling to precision mold machining. Our relentless pursuit of excellence transcends borders, catering to both domestic and international markets while adhering to the highest quality standards.
Encompassing a vast area of 60,000 square meters, our manufacturing complex is outfitted with state-of-the-art technology: inclusive of three 1-ton, as well as larger 3-ton and 10-ton electroslag furnaces; two 2-ton, one 1-ton, and one 0.75-ton air hammers. Our sophisticated facilities boast 5-ton and 8-ton electro-hydraulic hammer production lines, modern mechanical processing along with heat treatment equipment, advanced spectrometers, and a comprehensive suite of physical and chemical testing apparatus. With fixed assets amounting to a significant 153 million yuan, and an industrial output value soaring to 300 million yuan, we proudly employ a talented workforce of over 200 professionals, including 20 elite technical experts. We are notably recognized among the top fifty enterprises in Danyang City for our annual sales and tax contributions.
Driven by our zeal for innovation and growth, we have strategically emphasized recruiting a diverse range of technical talent and establishing partnerships with leading domestic universities and research institutions. This progressive strategy has led to remarkable technological advancements, earning us 5 nationally authorized invention patents and 3 utility model patents, thereby solidifying our leadership position in the industry.
With an impressive annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity reaching 15,000 tons, our products are indispensable across a multitude of sectors including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our ethos of 'pursuing excellence and building a world brand,' we align ourselves with the global market through a robust international brand strategy. Our unwavering commitment to international standards is demonstrated through certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a committed provider of forged products, Weirun upholds the principles of professionalism, continuously advancing our capabilities to deliver unparalleled, high-quality services to our distinguished clients.

• 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.