Steel Forging Rings - High-Strength DIN Specified 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.
Established in 2001, Jiangsu Weirun Forging Co., Ltd. is a distinguished union of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a trailblazer in China's forging industry, Weirun excels in the sophisticated process of alloy steel smelting and the dynamic creation of a wide variety of forged products. Since our founding, we have consistently embraced innovation and maintained a steadfast commitment to unparalleled quality.
Dedicated to achieving excellence, our company is intricately involved in numerous projects such as alloy steel smelting, electroslag remelting, forging, and mold crafting. Through the years, we have meticulously forged a robust industrial chain, seamlessly blending processes like material recycling, smelting, electroslag casting, forging, and precise mold machining. Our services extend with unparalleled dedication to both domestic and global markets.
Our expansive 60,000 square meters manufacturing facility is a hub of cutting-edge technology. It includes three 1-ton electroslag furnaces alongside 3-ton and 10-ton variants, augmented by two 2-ton air hammers, a 1-ton air hammer, and a 0.75-ton air hammer. We also feature state-of-the-art 5-ton and 8-ton fully automated electro-hydraulic hammer production lines. Our facility is equipped with comprehensive mechanical processing and heat treatment apparatus, advanced spectrometers, and a suite of devices for assessing physical and chemical performance. Valued at 153 million yuan in fixed assets, we generate a remarkable industrial output value of 300 million yuan. Our skilled workforce of over 200 professionals, including 20 technical experts, positions us among Danyang City's top fifty enterprises for annual sales and tax contributions.
To accelerate our growth trajectory, we have actively embraced a strategy of attracting diverse technical talents and fostering collaborations with leading domestic universities and research institutions. This forward-thinking approach has catalyzed significant advancements in technology and innovation, earning us 5 national authorized invention patents and 3 utility model patents. These accomplishments reinforce our stature as a pioneering leader in the industry.
With a commanding annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products serve as essential components in industries such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Driven by the philosophy of 'pursuing excellence and building a world brand,' we are committed to synergizing with the global market through an international brand strategy. Our compliance with international benchmarks is affirmed by accreditations like ISO9001, China CCS, France BV, and Germany TUV. As a professional supplier and service provider of forged products, Weirun is dedicated to professionalism, continually striving for exceptional expertise. Our specialized approach and commitment to providing unmatched high-quality services solidify our dedication to our valued clientele.

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.