Drop Forging Steel Ring in Round Bar Shape for Ship Manufacturing

• 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 landmark year of 2001, Jiangsu Weirun Forging Co., Ltd. heralds a legacy stemming from the distinguished Jiangsu Longtai Alloy Technology Co., Ltd. and the reputable Jiangsu Xinya New Materials Co., Ltd. As a pioneering force in China, we have set an unparalleled benchmark in the realms of alloy steel smelting and the crafting of an extensive range of forged products.
With unwavering dedication, our enterprise excels in the intricate production and management of alloy steel smelting, electroslag remelting, forging, and mold crafting projects. Over the years, we have meticulously crafted a comprehensive industrial chain, seamlessly integrating material recycling, smelting, electroslag casting, forging, and precision machining of molds, serving both domestic and international markets with distinguished excellence.
Strategically poised with a vast 60,000 square meter facility, our company boasts an impressive array of assets, featuring three state-of-the-art 1-ton electroslag furnaces alongside superior 3-ton and 10-ton counterparts. Our mechanical prowess is amplified by two 2-ton air hammers, a 1-ton air hammer, and a precise 0.75-ton air hammer, complemented by fully mechanized electro-hydraulic hammer production lines of 5 tons and 8 tons each. Our comprehensive infrastructure includes extensive mechanical processing and advanced heat treatment equipment, cutting-edge 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 that soars to 300 million yuan. Our dedicated workforce of over 200 includes more than 20 highly skilled technical professionals, solidifying our position among Danyang City's top fifty enterprises with commendable annual sales and tax revenue.
In our relentless pursuit of excellence, we have strategically infused our ranks with diverse technical talents and fostered dynamic collaborations with esteemed domestic universities and research institutions. Our unwavering commitment to technological advancement and innovation has been recognized with 5 national authorized invention patents and 3 utility model patents, underscoring our leadership in the industry.
With an impressive annual production capacity exceeding 30,000 tons of steel ingots and a formidable forging capacity of 15,000 tons, our products find wide-scale application across critical industries 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 international markets. Our commitment to an international brand strategy is unwavering, producing to the highest global standards. Our excellence is validated by prestigious certifications like ISO9001, China CCS, France BV, and Germany TUV. As a trusted professional supplier and service provider of forged products, Weirun exemplifies 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.