Steel Ring Forging for Ship Manufacturing and Heavy Equipment Needs

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• Model NO.: 38crni3MOV 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 momentous year of 2001, Jiangsu Weirun Forging Co., Ltd. proudly upholds a rich heritage rooted in Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a trailblazer in China, it has set unparalleled standards in the fields of alloy steel smelting and the creation of diverse forged products.
With unwavering dedication and precision, our enterprise leads in the sophisticated production and astute management of alloy steel smelting, electroslag remelting, forging, and mold crafting projects. Through the years, we have diligently constructed a comprehensive industrial chain, seamlessly merging material recycling, smelting, electroslag casting, forging, and precision machining of molds, catering to both domestic and international markets with exceptional service.
Strategically positioned with an expansive 60,000 square meter facility, our company boasts a remarkable array of assets, including three cutting-edge 1-ton electroslag furnaces, complemented by a superior 3-ton and 10-ton counterpart. Our mechanical capabilities are augmented by two 2-ton air hammers, a 1-ton air hammer, and a precision 0.75-ton air hammer, enhanced further by fully mechanized electro-hydraulic hammer production lines of 5 tons and 8 tons each. Our comprehensive infrastructure includes extensive mechanical processing and state-of-the-art heat treatment apparatus, advanced spectrometers, and sophisticated physical and chemical performance testing devices. With a robust foundation of 153 million yuan in fixed assets, we proudly achieve an industrial output value reaching 300 million yuan. Our committed workforce of over 200 includes more than 20 highly skilled technical experts, cementing our standing among Danyang City's top fifty enterprises with commendable annual sales and tax contributions.
In our relentless pursuit of excellence, we have tactically enriched our team with a diverse array of technical talents and fostered dynamic collaborations with prestigious domestic universities and research institutions. Our unwavering commitment to technological progress and innovation has been recognized with 5 national authorized invention patents and 3 utility model patents, highlighting our leadership in the industry.
With an impressive annual production capacity surpassing 30,000 tons of steel ingots and a formidable forging capacity of 15,000 tons, our products are widely utilized across sectors such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by the ethos of 'pursuing excellence and building a world brand,' we forge ahead, seamlessly integrating with global markets. Our unwavering commitment to an international brand strategy ensures production to the highest global standards. Our excellence is validated by certifications like ISO9001, China CCS, France BV, and Germany TUV. As a trusted professional supplier and service provider of forged products, Weirun embodies professionalism and innovation, consistently delivering exceptional services by adhering to a specialized, high-caliber approach to meet customer needs.

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.