Gear Shaft Assembly - ASTM Standard Round Bar with Quenching and Tempering

• 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.
Founded in 2001, Jiangsu Weirun Forging Co., Ltd. stands as a beacon of engineering precision and collaborative innovation. Emerging proudly from the alliance of Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., Weirun has carved its niche as a leader in China's dynamic market. Boasting unrivaled expertise in alloy steel smelting, we offer a rich array of superbly crafted forged products. Our dedication began at inception, setting a relentless course for innovation and an unwavering commitment to quality perfection, bolstering our esteemed status as industry vanguards.
Jiangsu Weirun Forging Co., Ltd. is a sterling emblem of quality excellence. Our extensive participation spans alloy steel smelting, electroslag remelting, forging, and mold design, leading to a meticulously curated complete industrial chain. This encompasses every phase from material recycling to the precision of mold machining. Our commitment to cross-border excellence manifests in our ability to consistently meet and surpass domestic and international quality standards.
Our avant-garde manufacturing facility, extending over an impressive 60,000 square meters, is fitted with the most advanced technology available. Equipped with three 1-ton, along with larger 3-ton and 10-ton electroslag furnaces, alongside two 2-ton, one 1-ton, and a 0.75-ton air hammer, our infrastructure also includes 5-ton and 8-ton electro-hydraulic hammer production lines. State-of-the-art mechanical processing, coupled with heat treatment equipment, precision spectrometers, and a thorough array of physical and chemical testing apparatus, complement our capabilities. With fixed assets of 153 million yuan and an industrial output value soaring to 300 million yuan, we have over 200 dedicated professionals, including 20 top-tier technical experts. These achievements secure our place among Danyang City's top fifty enterprises for annual sales and tax contributions.
Propelled by our zeal for innovation and strategic expansion, we focus sharply on harnessing diverse technical expertise and nurturing partnerships with leading domestic universities and research institutions. This visionary approach has propelled us to significant technological milestones, earning 5 nationally recognized invention patents and 3 utility model patents, thus reaffirming our industry-leading stature.
With a commanding annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity of 15,000 tons, our products are essential across a multitude of sectors such as wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by our principle of 'pursuing excellence and building a world brand,' we have seamlessly integrated into the global market with a robust international brand strategy. Our unyielding adherence to international standards is evidenced by certifications like ISO9001, China CCS, France BV, and Germany TUV. As a dedicated purveyor of forged products, Weirun relentlessly commits to the principles of professionalism, continuously enhancing our capabilities to deliver 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.