Custom Steel Forgings: Durable 42CrMo Roll Shaft for Industry 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. emerged as a distinguished alliance between Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. Gaining prominence in the Chinese market, Weirun has skillfully established its expertise in alloy steel smelting and an exceptional range of forged products. From our establishment, our relentless pursuit of innovative solutions and unparalleled quality has been the bedrock of our esteemed reputation.
Our company epitomizes quality excellence, engaging in an extensive range of projects that include alloy steel smelting, electroslag remelting, forging, and mold design. We have meticulously developed a comprehensive industrial chain, seamlessly integrating material recycling, smelting, electroslag casting, forging, and precision mold machining. Our commitment to supremacy extends beyond borders, serving both domestic and global markets with unmatched quality standards.
Spanning an impressive 60,000 square meters, our manufacturing complex is equipped with cutting-edge technology: three 1-ton electroslag furnaces, 3-ton and 10-ton electroslag furnaces; two 2-ton, one 1-ton, and one 0.75-ton air hammers. Our facilities boast advanced 5-ton and 8-ton electro-hydraulic hammer production lines, state-of-the-art mechanical processing, and heat treatment equipment, sophisticated spectrometers, and an extensive array of testing apparatus for both physical and chemical evaluations. With fixed assets of 153 million yuan and an industrial output of 300 million yuan, we employ over 200 professionals, including 20 elite technical experts. Proudly, we are among the top fifty enterprises in Danyang City for annual sales and tax contributions.
Guided by our drive for innovation and growth, we have strategically recruited diverse technical talents and established collaborations with premier domestic universities and research institutions. This progressive approach has led to significant technological breakthroughs, earning us 5 nationally authorized invention patents and 3 utility model patents, reinforcing our status as an industry leader.
With an outstanding production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons annually, our products are instrumental in diverse sectors including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Adhering to the ethos 'pursuing excellence and building a world brand,' we aim to align with the global market, maintaining a robust international brand strategy. Our commitment to international standards is backed by certifications like ISO9001, China CCS, France BV, and Germany TUV. As a dedicated provider of forged products, Weirun upholds professionalism and continuously seeks to enhance our expertise, ensuring unmatched, high-quality services 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.