Steel Forging Round Bars - Ideal for Various Applications and Standards

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• Application: Machinery Parts
• Material: Steel
• Heat Treatment: Normalizing
• Forging Tolerance: +/-0.5mm
• Standard: GB
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• International Standards: ASTM, AISI, DIN, JIS, BS
• Delivery Condition: Quenching+Tempering, Normalizing, Anealing
• Shape: Round Bar, Square, Shaft, Ring, Cylinder
• Delivery Surfaces: Black, Rough Machning Bright, Fine Maching Bright
• Alloy No: 9cr2mo, 18crmimo6, 30Cr2Ni2Mo
• Transport Package: Wooden Cartons
• Specification: Customization
• Trademark: weirun
• Origin: Jiangsu, China
• Production Capacity: 3000 Tons/Month

Product Description

Product Description

Chemical Composition (%):

	C	Si	Mn	P	S	Cr	Mo	Ni	Standard
9Cr2Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	1.70-2.10	0.20-0.40	≤0.25	GB/T13314-2008
18CrNiMo7-6	0.15-0.21	≤0.4	0.50-0.90	≤0.025	≤0.035	1.50-1.80	0.25-0.35	1.4-1.7	EN 10084-2008
30Cr2Ni2Mo	0.26-0.34	0.17-0.37	0.50-0.80	≤0.020	≤0.020	1.80-2.20	0.30-0.50	1.80-2.20	GB/T3077-2015

Main Products

Company Profile

Jiangsu Weirun Forging Co., Ltd.
Established in 2001, Jiangsu Weirun Forging Co., Ltd. stands as a trailblazer in China's alloy steel smelting and forging sector. Born from the strategic union of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., the company inherits a storied legacy of innovation and excellence. Renowned for producing a vast variety of forged products, our foundation is a testament to an enduring commitment to superior quality and inventive solutions.
As a vanguard in alloy steel smelting, electroslag remelting, and forging, Jiangsu Weirun is also a prominent figure in mold manufacturing. Through years of progressive development, we have crafted an industrial chain that seamlessly amalgamates material recycling, smelting, electroslag casting, forging, and precision mold machining. Serving both domestic and global markets, we are unwavering in our commitment to deliver unmatched quality and extraordinary service.
Our cutting-edge facility, sprawling over 60,000 square meters, is outfitted with advanced electroslag furnaces, including three 1-ton, one 3-ton, and a robust 10-ton unit. Our forging operations are reinforced by two 2-ton air hammers, a 1-ton, and a 0.75-ton air hammer, supported by mechanized electro-hydraulic hammer lines of 5 and 8 tons. Enhanced by sophisticated mechanical processing, heat treatment equipment, spectrometers, and a diverse range of testing devices, our operations flourish with a remarkable industrial output of 300 million yuan, backed by fixed assets valued at 153 million yuan. Our dedicated team of over 200, including 20 technical experts, proudly places us among the top fifty in Danyang City for sales and tax contributions.
Charting a path toward a promising future, Jiangsu Weirun has strategically adopted a philosophy centered around talent cultivation, building robust partnerships with leading domestic universities and research institutions. Our relentless focus on technological innovation has garnered us 5 national patents for breakthrough inventions and 3 utility model patents, underscoring our unwavering dedication to pioneering advancement and excellence.
With an exceptional annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, Jiangsu Weirun caters to a broad spectrum of industries, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by a philosophy of 'pursuing excellence and building a world brand,' we are steadfast in aligning with international markets and standards, proudly holding prestigious certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a premier provider of forged products, Weirun remains dedicated to delivering superior quality and professional expertise, ensuring an exceptional service experience for our valued clients.

FAQ

• 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.