Premium Steel Forging Rings - DIN Specified Annealed Cylinder Forms

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• 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. emerges as a prestigious union between Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. Renowned as one of China's frontrunners, Weirun masterfully blends the sophisticated processes of alloy steel smelting with the dynamic creation of a wide spectrum of forged products. Our enduring legacy of innovation and quality, steadfast since our founding, marks us as a trailblazer in the industry.
Driven by a relentless pursuit of excellence, our operations span a rich variety of projects: alloy steel smelting, electroslag remelting, adept forging, and precise mold manufacturing. Over the years, we have seamlessly woven an all-encompassing industrial chain, integrating material recycling, smelting, electroslag casting, forging, and meticulous mold machining. Serving both domestic and international markets with exceptional dedication, we stand as a beacon of quality and reliability.
Our expansive 60,000-square-meter manufacturing facility is home to state-of-the-art equipment: three 1-ton electroslag furnaces, alongside 3-ton and 10-ton models, and bolstered by two 2-ton air hammers, a 1-ton, and a 0.75-ton air hammer. Our cutting-edge electro-hydraulic hammer production lines of 5 tons and 8 tons further enhance our capabilities. Complemented by robust mechanical processing, advanced heat treatment equipment, high-precision spectrometers, and comprehensive testing devices, we excel in both physical and chemical performance assessments. With fixed assets totaling 153 million yuan, we proudly achieve an industrial output value of 300 million yuan. Employing a team of over 200 skilled professionals, including 20 technical experts, we firmly hold a position among Danyang City's top fifty enterprises for annual sales and tax contributions.
In pursuit of ambitious growth, our strategic focus has recently pivoted towards attracting diverse technical talent and fostering partnerships with prestigious domestic universities and research institutions. This dynamic approach has catalyzed significant technological and innovative advancements, earning us 5 nationally authorized invention patents and 3 utility model patents, hence securing our leadership status within the industry.
With an impressive annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products are pivotal across industries such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our philosophy of 'pursuing excellence and building a world brand,' we seamlessly align with global markets and uphold an international brand strategy. Our commitment to international standards is confirmed by certifications from ISO9001, China CCS, France BV, and Germany TUV. As a distinguished supplier and service provider of forged products, Weirun remains resolute in its pursuit of professionalism, consistently aspiring to elevate our expertise. We are unwavering in our specialized approach, offering unmatched high-quality services to our esteemed 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.