High Strength 38crni3MOV Hot Forging Steel Round Bar for Heavy Machinery

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• Model NO.: 38crni3MOV 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, Jiangsu Weirun Forging Co., Ltd. is an esteemed enterprise with a rich heritage, formed by the collaboration of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd. As a pioneer in the Chinese alloy steel smelting and forged products manufacturing sector, it stands as one of the earliest champions in this field.
Specializing in an impressive array of operations, Jiangsu Weirun excels in alloy steel smelting, electroslag remelting, forging, and mold production. Through years of dedicated innovation, the company has meticulously crafted a comprehensive industrial chain. This robust network spans material recycling, smelting, electroslag casting, forging, and precision mold machining, both nationally and internationally.
The company prides itself on an expansive 60,000 square meters facility, equipped with advanced machinery including three 1-ton, one 3-ton, and one 10-ton electroslag furnaces. The forging arsenal comprises two 2-ton and one 1-ton air hammers, alongside a 0.75-ton air hammer, bolstered by mechanized electro-hydraulic hammer production lines of 5 and 8 tons each. With an extensive array of mechanical processing and heat treatment equipment, spectrometers, and advanced testing devices, Jiangsu Weirun's infrastructure supports its standing as a top-tier enterprise. The company boasts fixed assets of 153 million yuan, achieving an industrial output value of 300 million yuan. It employs a skilled workforce exceeding 200, including over 20 technical experts, and ranks proudly as one of Danyang City's top fifty for annual sales and tax revenue.
In a strategic move to supercharge its progress, Jiangsu Weirun has embraced the infusion of diverse technical talent and fostered partnerships with renowned domestic universities and research institutions. This commitment to innovation has yielded fruitful results, including 5 national authorized invention patents and 3 utility model patents, showcasing its prowess in technology advancement.
Presently, Jiangsu Weirun boasts an impressive annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons. Its high-quality products find applications across various dynamic industries, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Upholding the noble principle of "pursuing excellence and building a world brand," the company is rapidly aligning with international market demands. With a steadfast focus on international brand strategy, it adheres to rigorous global standards and proudly holds certifications like ISO9001, China CCS, France BV, and Germany TUV. As a distinguished supplier and service provider, Weirun is unwavering in its professional approach, consistently striving for specialization and delivering unparalleled customer service.

 

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.