Precision Steel Gear Bar, Quenching Tempering for Heavy-Duty Applications

• 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. stands as a beacon of engineering excellence and innovative collaboration in the industry. Born from the vibrant partnership between Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., Weirun has emerged as a leading figure in China's market landscape. Our exceptional skills in alloy steel smelting, combined with a distinguished range of forged products, underscore our esteemed market standing. From the very beginning, we have pursued innovation tirelessly and maintained an unwavering commitment to quality, ensuring our role as an industry frontrunner.
Jiangsu Weirun embodies the pinnacle of quality excellence through a wide spectrum of initiatives in alloy steel smelting, electroslag remelting, forging, and mold design. We have intricately developed a flawless industrial chain that integrates processes from material recycling to precision mold machining. Our steadfast dedication to superior standards transcends borders, guaranteeing that our products meet the highest quality benchmarks both nationally and internationally.
Our vast manufacturing facility, spanning 60,000 square meters, is equipped with cutting-edge technology. Featuring 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, state-of-the-art mechanical processing, and heat treatment equipment, precision spectrometers, and a comprehensive array of physical and chemical testing tools. With fixed assets worth 153 million yuan and an industrial output value of 300 million yuan, our team of over 200 skilled professionals, including 20 top technical experts, drives our success. These achievements place us among the top fifty enterprises in Danyang City regarding annual sales and tax contributions.
Propelled by a relentless drive for innovation and growth, Jiangsu Weirun has successfully attracted a wealth of technical expertise by forging partnerships with prestigious domestic universities and research institutions. This strategic foresight has fueled significant technological advancements, resulting in 5 nationally recognized invention patents and 3 utility model patents, solidifying our leadership position in the industry.
With an impressive annual production capacity surpassing 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products are instrumental across various 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 seamlessly integrate into the global marketplace through a comprehensive international brand strategy. Our steadfast commitment to international standards is evidenced by certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a dedicated provider of forged products, Weirun remains focused on professionalism, consistently enhancing our capabilities to deliver unmatched, high-quality services to 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.