Precision Forged 42CrMo Roll Shaft with Quenching and Tempering

• 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 the year 2001, Jiangsu Weirun Forging Co., Ltd. emerges as a visionary enterprise, brilliantly uniting Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. Poised at the cutting-edge of the Chinese market, Weirun has distinguished itself through exceptional prowess in alloy steel smelting coupled with an innovative array of forged product offerings. From our very inception, an unwavering drive for groundbreaking solutions and an unswerving dedication to supreme quality have been the pillars supporting our illustrious reputation.
Jiangsu Weirun Forging Co., Ltd. stands as a paragon of quality excellence, dynamically engaging in a multifaceted array of projects that span alloy steel smelting, electroslag remelting, forging, and mold design. Carefully crafted, our comprehensive industrial chain integrates seamlessly, featuring processes from material recycling and smelting to electroslag casting, forging, and precision mold machining. Our devotion to excellence knows no bounds, transcending borders to serve both domestic and international markets with products that meet the highest quality standards.
Our expansive state-of-the-art manufacturing complex, sprawling over an impressive 60,000 square meters, is replete with advanced technology: three 1-ton, plus 3-ton and 10-ton electroslag furnaces; two 2-ton, one 1-ton, and one 0.75-ton air hammers, alongside cutting-edge 5-ton and 8-ton electro-hydraulic hammer production lines. Our facilities are equipped with top-tier mechanical processing and heat treatment technology, advanced spectrometers, and a vast array of testing equipment for comprehensive physical and chemical evaluations. With substantial fixed assets totaling 153 million yuan and an industrial output value reaching 300 million yuan, we proudly employ a team of over 200 dedicated professionals, including 20 elite technical experts. We stand among the top fifty enterprises in Danyang City due to our outstanding annual sales and significant tax contributions.
Inspired by our relentless pursuit of innovation and growth, we have strategically recruited a diverse range of technical talents and forged partnerships with premier domestic universities and research institutes. This forward-thinking strategy has yielded remarkable technological breakthroughs, culminating in 5 nationally authorized invention patents and 3 utility model patents, thereby reaffirming our standing as a trailblazer in 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 instrumental across diverse sectors, including 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 endeavor to align with the global marketplace, sustaining a compelling international brand strategy. Our commitment to international standards is validated by prestigious certifications like ISO9001, China CCS, France BV, and Germany TUV. As a dedicated provider of premium forged products, Weirun upholds the principles of professionalism and strives for continuous enhancement of 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.