Versatile Steel Square Bar - Available in Quenching, Tempering, and Annealing

• 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. has rapidly risen as a trailblazer in China's alloy steel smelting and forging sector. Born from the strategic alliance of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., the company carries forward a rich heritage as a front-runner in forging industry. Our deep-rooted tradition in manufacturing excellence is complemented by an unyielding quest for innovation.
Leading the charge in alloy steel smelting, electroslag remelting, and forging, Jiangsu Weirun is a prominent figure in mold manufacturing. Through ongoing development, our extensive industrial chain seamlessly interweaves recycling, smelting, electroslag casting, forging, and precise mold machining. Serving both domestic and international markets, we are steadfast in our commitment to superior quality and unparalleled service.
Our ultramodern facility, sprawling over 60,000 square meters, is armed with advanced electroslag furnaces, including three 1-ton, one 3-ton, and an imposing 10-ton unit. Forging is powered by two 2-ton air hammers, a 1-ton air hammer, and a 0.75-ton air hammer, supported by 5 and 8-ton electro-hydraulic hammer lines. Our sophisticated mechanical processing and heat treatment arsenal, alongside spectrometers and diverse testing devices, bolster our impressive industrial output of 300 million yuan, backed by assets of 153 million yuan. Our elite team, comprising over 200 skilled individuals, including 20 technical experts, places us among Danyang City's prestigious top fifty in sales and tax contributions.
Driving our future trajectory, Jiangsu Weirun embraces a strategic focus on talent acquisition, forging strong partnerships with esteemed universities and research bodies to foster continuous innovation. Our dedication to technological progress has earned us 5 national patents for revolutionary inventions and 3 utility model patents, underscoring our commitment to pioneering developments.
With an extraordinary annual production exceeding 30,000 tons of steel ingots, alongside a forging capacity of 15,000 tons, Jiangsu Weirun caters to varied industries such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Embodying the spirit of 'pursuing excellence and building a world brand,' we align with global markets and standards, boasting certifications like ISO9001, China CCS, France BV, and Germany TUV. As a premier provider of forged products, Weirun is dedicated to delivering unmatched quality and professional expertise, ensuring a superior experience for our discerning clientele.

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.