Robust Steel Square Bar for Hot Forging and Industrial Use

• 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 the year 2001, Jiangsu Weirun Forging Co., Ltd. is a pioneering entity in the realm of alloy steel smelting and the creation of a diverse range of forged products, stemming from its esteemed affiliates - Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. It proudly stands as one of China's forerunners in the industry.
Our company excels in the production and management of various key projects, including alloy steel smelting, electroslag remelting, forging, and mold manufacturing. Over the years, we have meticulously developed a comprehensive industrial chain, integrating everything from material recycling, smelting, electroslag casting, and forging to the precision machining of molds. This expansive network extends beyond domestic boundaries, embedding our presence in international markets.
Boasting a sprawling factory of 60,000 square meters, Jiangsu Weirun Forging Co., Ltd. houses advanced facilities, including three 1-ton electroslag furnaces, a 3-ton electroslag furnace, and a 10-ton electroslag furnace. We are equipped with two 2-ton air hammers, a 1-ton air hammer, and a 0.75-ton air hammer, alongside cutting-edge electro-hydraulic hammer production lines, each with 5 and 8-ton capacities. Our arsenal includes a wide array of mechanical processing and heat treatment machinery, spectrometers, and a suite of physical and chemical performance testing devices. With fixed assets amounting to 153 million yuan, our industrial output value reaches a commendable 300 million yuan. Employing over 200 talented individuals, including 20+ technical experts, we proudly rank among the top fifty enterprises by annual sales and tax revenue in Danyang City.
In a bid to fast-track our growth trajectory, we have passionately embraced the influx of technical talent and have fostered collaborative ties with renowned domestic universities and research institutions. This proactive stance in technology acquisition and innovation has led to the attainment of 5 national invention patents and 3 utility model patents, underscoring our commitment to cutting-edge advancements.
With an impressive annual production capability exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, Jiangsu Weirun's products find extensive applications across diverse industries, including wind power, chemical, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. We adhere to the guiding principle of 'pursuing excellence and building a world brand,' propelling our seamless integration with global markets. Our unwavering commitment to an international brand strategy ensures that we align our production with global standards. We proudly hold certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a dedicated supplier and service provider of forged products, Weirun stands committed to maintaining professional excellence, delivering specialized, top-tier services to our valued customers.

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.