3Cr13 4Cr13 Alloy Numbers Stainless Iron Ring Forging Steel Factory Direct Sale Customalized 40crnimo Alloy Numbers Carbon Structure Steel Cylinder for Hydro-Cy

• 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.  
Founded in 2001, it is composed of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., and is one of the earliest enterprises in China to engage in the smelting of alloy steel and the manufacturing of various forged products.  
The company mainly engages in the production and operation of projects such as alloy steel smelting, electroslag remelting, forging, and mold manufacturing. After years of development, it has formed a complete industrial chain encompassing material recycling, smelting, electroslag casting, forging, and precision machining of molds, both domestically and internationally.  
The company currently owns a factory covering 60,000 square meters, with three 1-ton electroslag furnaces, one 3-ton electroslag furnace, and one 10-ton electroslag furnace; two 2-ton air hammers, one 1-ton air hammer, and one 0.75-ton air hammer, as well as fully mechanized electro-hydraulic hammer production lines of 5 tons and 8 tons each. It possesses a substantial amount of mechanical processing and heat treatment equipment, spectrometers, and various physical and chemical performance testing devices. The company has fixed assets of 153 million yuan, with an industrial output value reaching 300 million yuan, employing over 200 staff members, including more than 20 professionals with technical expertise, and ranking among the top fifty enterprises in terms of annual sales and tax revenue in Danyang City.  
To accelerate the company's development, in recent years, the company has vigorously introduced various technical talents and actively collaborated with well-known domestic universities and research institutions, continuously engaging in technology introduction and innovation, having obtained 5 national authorized invention patents and 3 utility model patents.  
Currently, the company has an annual production capacity of over 30,000 tons of steel ingots and a forging capacity of 15,000 tons, with products widely used in industries such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. The company adheres to the principle of "pursuing excellence and building a world brand," accelerates its integration with the international market, and insists on an international brand strategy, organizing production according to international standards. It has passed certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a professional supplier and service provider of forged products, Weirun is committed to professionalism and continuously strives for a high level of expertise, adhering to a specialized approach to provide customers with high-quality services.

 

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.