42CrMo Rolls and Shafts Are Used in Various Rolling Mills, Such as Hot Rolling Mills and Cold Rolling Mills

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• 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. is a remarkable amalgamation of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. Stepping boldly into the forefront of the market in China, Weirun has carved a niche through its mastery in alloy steel smelting and a dynamic suite of forged product offerings. Since our inception, our unwavering pursuit of innovative solutions and our commitment to delivering unparalleled quality have been the cornerstones of our esteemed reputation.
Our company stands as a beacon of quality excellence, engaging in a diverse array of projects that encompass alloy steel smelting, electroslag remelting, forging, and mold design. We've meticulously crafted a comprehensive industrial chain that seamlessly integrates material recycling, smelting, electroslag casting, forging, and precision mold machining. Our commitment to excellence transcends borders, serving both domestic and global markets with the highest quality standards.
Our expansive manufacturing complex spans a remarkable 60,000 square meters and is outfitted with cutting-edge technology: three 1-ton electroslag furnaces, alongside 3-ton and 10-ton electroslag furnaces; two 2-ton, one 1-ton, and one 0.75-ton air hammers. Additionally, we boast advanced 5-ton and 8-ton electro-hydraulic hammer production lines. Our facilities are equipped with state-of-the-art mechanical processing and heat treatment equipment, sophisticated spectrometers, and an extensive range of testing apparatus for both physical and chemical evaluations. With fixed assets totaling 153 million yuan, and an impressive industrial output value reaching 300 million yuan, we employ a team of over 200 dedicated professionals, including 20 top-tier technical experts. Proudly, we rank among the top fifty enterprises in Danyang City for our annual sales and tax contributions.
Driven by our quest for innovation and expansion, we have strategically targeted the recruitment of a wide array of technical talents and established collaborations with leading domestic universities and research institutions. This forward-thinking approach has yielded substantial breakthroughs in technology and innovation, earning us 5 nationally authorized invention patents and 3 utility model patents, thereby solidifying our position as an industry vanguard.
With an outstanding annual production capacity that surpasses 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products play a vital role across various sectors such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by the ethos 'pursuing excellence and building a world brand,' we strive to align with the global marketplace, sustaining a robust international brand strategy. Our dedication to international standards is substantiated by certifications like ISO9001, China CCS, France BV, and Germany TUV. As a committed provider of forged products, Weirun upholds the principles of professionalism and seeks continuous enhancement of our expertise 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.