BS Quenching and Tempering Round Bar for Heavy-Duty Construction Use

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• Molding Technics: Casting
• Application: Machinery Parts
• Material: Steel
• Heat Treatment: Normalizing
• Surface Treatment: Rough Machining
• 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.
Founded in 2001, Jiangsu Weirun Forging Co., Ltd. exemplifies engineering brilliance and collaborative innovation. Emerging from the dynamic synergy between Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., Weirun shines as a luminary in the Chinese market. Our unparalleled mastery in alloy steel smelting and our exquisite array of forged products exemplify our prestigious reputation. From our inception, we have relentlessly pursued innovation and upheld a steadfast commitment to quality, solidifying our place as an industry leader.
Jiangsu Weirun epitomizes quality excellence, engaging in a vast array of initiatives encompassing alloy steel smelting, electroslag remelting, forging, and mold design. We have meticulously crafted a seamless industrial chain, integrating processes from material recycling to precision mold machining. Our unwavering dedication to excellence transcends international borders, ensuring our products uphold the highest quality standards both domestically and globally.
Our expansive manufacturing facility, sprawling across 60,000 square meters, is outfitted with state-of-the-art technology. Housing three 1-ton, and larger 3-ton and 10-ton electroslag furnaces, alongside two 2-ton, one 1-ton, and one 0.75-ton air hammers, our advanced infrastructure also includes 5-ton and 8-ton electro-hydraulic hammer production lines, cutting-edge mechanical processing and heat treatment equipment, precision spectrometers, and a comprehensive suite of physical and chemical testing tools. With fixed assets valued at 153 million yuan and an industrial output value of 300 million yuan, our workforce of over 200 skilled professionals, including 20 leading technical experts, propels our achievements. These accomplishments position us among the top fifty enterprises in Danyang City for annual sales and tax contributions.
Driven by an unyielding passion for innovation and growth, Jiangsu Weirun has strategically attracted a plethora of technical expertise, forging alliances with esteemed domestic universities and research institutions. This forward-thinking strategy has catalyzed significant technological advancements, resulting in 5 nationally recognized invention patents and 3 utility model patents, cementing our leadership within the industry.
With a remarkable annual production capacity surpassing 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products play pivotal roles across numerous sectors, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our motto of 'pursuing excellence and building a world brand,' we integrate seamlessly into the global marketplace through a comprehensive international brand strategy. Our unwavering adherence to international standards is corroborated by certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a committed purveyor of forged products, Weirun remains devoted to professionalism, continually enhancing our capabilities to deliver unparalleled, high-quality services to our esteemed 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.