ASTM Standard Drop Forging Steel Ring for Ship Manufacturing Needs

• 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 significant year of 2001, Jiangsu Weirun Forging Co., Ltd. stands as a beacon of innovation and excellence, originating from its prestigious predecessors, Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a trailblazer in China's industrial landscape, it has established unparalleled standards in the domain of alloy steel smelting and the precision fabrication of a diverse range of forged products.
With unwavering dedication, we specialize in the sophisticated realm of alloy steel smelting, electroslag remelting, forging, and mold crafting disciplines. Throughout the years, we have meticulously assembled a comprehensive industrial ecosystem that effortlessly merges material recycling, smelting, electroslag casting, forging, and the precision machining of molds, thereby serving a broad spectrum of both domestic and global markets with distinction and expertise.
Our cutting-edge 60,000 square meter facility is strategically outfitted with a formidable selection of assets, featuring three advanced 1-ton electroslag furnaces, alongside superior 3-ton and 10-ton counterparts. Our mechanical fortitude is further amplified by two 2-ton air hammers, a 1-ton, and a precise 0.75-ton air hammer, efficiently supported by fully mechanized electro-hydraulic hammer production lines of 5 tons and 8 tons each. This comprehensive setup is enriched with substantial mechanical processing and progressive heat treatment equipment, state-of-the-art spectrometers, and sophisticated physical and chemical performance testing instruments. With a robust infrastructure valuated at 153 million yuan in fixed assets, we pride ourselves on achieving an impressive industrial output value reaching 300 million yuan. Our dedicated team, comprising over 200 talented individuals, includes more than 20 highly skilled technical experts, reinforcing our esteemed position among Danyang City's top fifty enterprises, recognized for remarkable annual sales and tax contributions.
In our unyielding pursuit of distinction, we have strategically appointed a diverse range of technical experts and cultivated dynamic partnerships with prestigious domestic universities and research institutions. Our relentless commitment to technological advancement and innovation is evidenced by 5 nationally authorized invention patents and 3 utility model patents, showcasing our leadership and pioneering spirit within the industry.
Boasting an impressive annual production capacity surpassing 30,000 tons of steel ingots, coupled with a formidable forging prowess of 15,000 tons, our products are extensively utilized across a multitude of sectors, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our ethos of "pursuing excellence and building a world brand," we seamlessly integrate into international markets, steadfastly committed to an international brand strategy that adheres to the highest global standards. Our excellence is affirmed by prestigious certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a distinguished professional supplier and service provider of forged products, Weirun epitomizes professionalism and innovation, consistently delivering exceptional services by adhering to a specialized, high-caliber approach to fulfill customer requirements.

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.