High-Quality Steel Forging Rings - DIN Standard, Normalizing Condition

• 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 milestone year of 2001, Jiangsu Weirun Forging Co., Ltd. descends from the illustrious lineage of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a vanguard in China's dynamic industry landscape, we have redefined excellence in alloy steel smelting and the manufacture of a refined variety of forged products.
With unmatched dedication, our company specializes in the sophisticated production and flawless management of alloy steel smelting, electroslag remelting, forging, and precision mold manufacturing. Throughout the years, we have meticulously established a holistic industrial chain that effortlessly merges material recycling, smelting, electroslag casting, forging, and precision mold machining, providing unparalleled service to markets both domestically and globally.
Our enterprise is strategically housed in a vast 60,000 square meter facility, featuring an impressive array of assets, including cutting-edge 1-ton electroslag furnaces and advanced 3-ton and 10-ton versions. Our mechanical strength is further amplified by two 2-ton air hammers, a 1-ton air hammer, and a 0.75-ton air hammer, enhanced by fully mechanized electro-hydraulic hammer production lines of 5 tons and 8 tons. Our extensive setup encompasses comprehensive mechanical processing, leading-edge heat treatment technology, state-of-the-art spectrometers, and advanced testing devices for physical and chemical performance. With a robust capital foundation of 153 million yuan in fixed assets, we achieve an impressive industrial output value of 300 million yuan. Our dedicated team of over 200 employees includes more than 20 highly skilled technical experts, anchoring our status among Danyang City's top fifty enterprises through remarkable annual sales and tax contributions.
In our quest for excellence, we have strategically incorporated a diverse range of technical experts and fostered vibrant partnerships with renowned domestic universities and research institutions. Our unwavering dedication to technological innovation has been recognized with 5 national invention patents and 3 utility model patents, affirming our leadership in the industry.
Boasting an impressive annual production capability exceeding 30,000 tons of steel ingots and a powerful forging capacity of 15,000 tons, our products are broadly utilized across various industries such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Driven by the ethos of 'pursuing excellence and building a world brand,' we advance forward, seamlessly integrating with international markets. Our commitment to a global brand strategy remains steadfast, producing at the highest global standards. Our excellence is certified by prestigious accreditations like ISO9001, China CCS, France BV, and Germany TUV. As a trusted professional supplier and service provider of forged products, Weirun stands for professionalism and innovation, consistently delivering exceptional services by adhering to a specialized, top-tier approach to fulfill 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.