38crni3MOV Hot Forging Round Bar for Heavy Ship and Pump Applications

• 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 a pioneering enterprise in China, heralding advancements in the smelting of alloy steel and the crafting of a wide array of forged products. It is composed of the innovative Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., marking its esteemed presence as one of the nation's earliest contributors to the industry.
Specializing in a broad spectrum of projects, Jiangsu Weirun excels in alloy steel smelting, precision electroslag remelting, and sophisticated forging and mold manufacturing. Over the years, the company has crafted an intricate industrial ecosystem, seamlessly integrating material recycling, smelting, electroslag casting, forging, and precision mold machining. This innovative approach has cemented its reputation both in China and on the global stage.
The company's expansive 60,000-square-meter factory is a testament to its manufacturing prowess. Equipped with an array of electroslag furnaces—a trio of 1-ton units, a robust 3-ton furnace, and a mighty 10-ton furnace, alongside a fleet of air hammers and mechanized electro-hydraulic hammers, Jiangsu Weirun stands at the forefront of production innovation. With fixed assets valuing 153 million yuan and producing an industrial output of 300 million yuan, the company is a significant economic force in Danyang City, supported by a team of over 200 dedicated professionals, including more than 20 technical experts.
In a strategic push for innovation, Jiangsu Weirun has strategically recruited technical talents and fostered collaborations with prestigious universities and research institutions domestically. This endeavor has yielded fruitful results, with the company securing five national authorized invention patents and three utility model patents, reinforcing its position as a vanguard of technological advancement.
Boasting an impressive annual production capacity of over 30,000 tons of steel ingots and a forging capacity of 15,000 tons, Jiangsu Weirun's products are indispensable across diverse industries, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Committed to excellence and global brand-building, the company aligns its production with international standards, achieving certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a dedicated provider of superior forged products, Weirun's unwavering dedication to quality and expertise ensures unparalleled services, reinforcing its status as a global leader in the industry.

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.