Reliable 38crni3MOV Cold Forging Square Bar for Heavy Machinery Parts

Jiangsu Weirun Forging Co., Ltd.
Established in 2001, Jiangsu Weirun Forging Co., Ltd. stands as a prestigious pillar in China's industrial landscape, originally formed through the collaboration of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a pioneering entity in alloy steel smelting and the manufacturing of diverse forged products, it is one of the foremost enterprises in China, known for its dedication to excellence and innovation.
Specializing in a wide array of industrial ventures, Jiangsu Weirun engages in alloy steel smelting, state-of-the-art electroslag remelting, precision forging, and mold manufacturing. Over years of relentless advancement, it has developed a comprehensive industrial chain that seamlessly integrates material recycling, superior smelting, electroslag casting, meticulous forging, and the precision machining of molds, extending its influential reach both across the nation and internationally.
Boasting an impressive 60,000 square meter production facility, the company is equipped with advanced technology, including three 1-ton electroslag furnaces, one 3-ton, and a massive 10-ton electroslag furnace. The facility is further enhanced by two 2-ton air hammers, alongside 1-ton and 0.75-ton air hammers, supported by mechanized electro-hydraulic hammer production lines of 5 and 8 tons each. With a wealth of mechanical processing, sophisticated heat treatment equipment, precision spectrometers, and comprehensive physical and chemical performance testing devices, Jiangsu Weirun commands fixed assets of 153 million yuan and boasts an industrial output value of 300 million yuan. Employing a dedicated workforce of over 200, including more than 20 technical professionals, it proudly ranks among the top fifty enterprises for annual sales and tax revenue in Danyang City.
In a concerted effort to propel its growth trajectory, Jiangsu Weirun has actively embraced the infusion of extraordinary technical talent and fostered strategic alliances with esteemed domestic universities and research institutions. The company is steadfast in its commitment to technological advancement and innovation, having garnered 5 national authorized invention patents and 3 utility model patents, testament to its innovative prowess.
With an impressive annual production capability exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, Weirun's products are indispensable across a spectrum of industries including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Adhering to the principle of 'pursuing excellence and building a world brand,' Weirun advances its synchronization with global markets by steadfastly implementing an international brand strategy. By organizing production in strict accordance with international standards, it has earned prestigious certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a dedicated provider of forged products, Weirun is unwavering in its commitment to professional excellence, relentlessly pursuing a high level of expertise. The company remains committed to delivering superior quality services and unwavering customer satisfaction.

• 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.