Metal Processing Machinery Parts: 38crni3MOV Steel Shaft Forging

Jiangsu Weirun Forging Co., Ltd.
Established in the year 2001, Jiangsu Weirun Forging Co., Ltd. emerges as a trailblazer in China's alloy steel smelting and forging sector. Born from the strategic merger of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., the company inherits a prestigious legacy as one of the inaugural enterprises devoted to the craft of manufacturing an extensive range of forged products. Our tradition is grounded in a relentless pursuit of innovation and an unwavering commitment to excellence.
Positioned at the pinnacle of alloy steel smelting, electroslag remelting, and forging, Jiangsu Weirun is also a leader in the art of mold manufacturing. With years of dynamic progress, our comprehensive industrial chain orchestrates a seamless integration of material recycling, smelting, electroslag casting, forging, and the precision machining of molds. Operating on both domestic and global platforms, our resolute commitment is to deliver unparalleled quality and exceptional service.
Occupying an expansive 60,000 square meters, our cutting-edge facility is outfitted with advanced electroslag furnaces, featuring three 1-ton, a singular 3-ton, and a formidable 10-ton unit. Our forging operations are enhanced by two 2-ton air hammers, a 1-ton air hammer, and a 0.75-ton air hammer, further augmented by mechanized electro-hydraulic hammer lines of 5 and 8 tons. Our state-of-the-art mechanical processing and heat treatment equipment, coupled with spectrometers and an array of testing devices, anchor our robust industrial output, flourishing with an impressive 300 million yuan, supported by fixed assets of 153 million yuan. Our team of over 200, including 20 technical experts, proudly secure our place among Danyang City's elite top fifty, excelling in sales and tax contributions.
Propelling our forward trajectory, Jiangsu Weirun has strategically embraced a philosophy of talent acquisition, forging alliances with esteemed domestic universities and research institutions to fuel perpetual innovation. Our unwavering dedication to technological evolution has garnered 5 national patents for groundbreaking inventions and 3 utility model patents, symbolizing our steadfast commitment to pioneering progress.
With a remarkable annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, Jiangsu Weirun caters to 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 purveyor of forged products, Weirun remains steadfast in delivering unmatched quality and professional expertise, ensuring a superior service experience for our discerning 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.