Tempered 42CrMo Roll Shaft – Perfect for Rolling Mill Operations

• 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. has emerged as an extraordinary synthesis of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. With a bold stride into China's competitive market landscape, Weirun has expertly crafted a distinctive position through its high-caliber proficiency in alloy steel smelting and a vibrant portfolio of forged products. Since our inception, our relentless quest for pioneering solutions and our steadfast commitment to delivering superior quality have underpinned our prestigious reputation in the industry.
Our company illuminates the industry with our steadfast commitment to quality excellence, engaging across a vibrant spectrum of projects that include alloy steel smelting, electroslag remelting, forging, and innovative mold design. We have meticulously designed a holistic industrial chain that seamlessly merges material recycling, smelting, electroslag casting, forging, and precision mold machining. Our dedication to excellence knows no boundaries, as we serve both domestic and international markets with the highest quality standards.
Our expansive manufacturing facility, spanning a breathtaking 60,000 square meters, is a testament to our commitment to innovation and quality. Outfitted with state-of-the-art technology, our facilities include three 1-ton, and 3-ton to 10-ton electroslag furnaces, alongside advanced 5-ton and 8-ton electro-hydraulic hammer production lines. We are equipped with cutting-edge mechanical processing and heat treatment equipment, sophisticated spectrometers, and a comprehensive 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 proudly employ over 200 dedicated professionals, including 20 leading technical experts. Our status as one of the top fifty enterprises in Danyang City is reflected in our significant annual sales and tax contributions.
Driven by our unyielding pursuit of innovation and growth, we have strategically recruited a diverse spectrum of technical talents and formed alliances with prominent domestic universities and research institutions. This visionary strategy has led to significant technological breakthroughs, earning us 5 nationally authorized invention patents and 3 utility model patents, thus cementing our leadership position within the industry.
With an exceptional annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products are indispensable across numerous sectors including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our motto, 'pursuing excellence and building a world brand,' we align ourselves with global market demands, sustaining a robust international brand strategy. Our adherence to international standards is demonstrated through certifications like ISO9001, China CCS, France BV, and Germany TUV. As a dedicated provider of forged products, Weirun upholds the principles of professionalism and strives for continuous advancement in our expertise to deliver unparalleled, high-quality services to our esteemed 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.