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Ring Gear Blank Forging 42CrMo4 Large Diameter Rolled rings manufacturers

Categories Gear Blank Forging
Brand Name: Guangda
Certification: DNV, BV, Rina, ISO, GL, ABS, LR,CCS ,PED
Place of Origin: Jiangsu China
Payment Terms: L/C, T/T, D/P, D/A
Delivery Time: 15-45 work days
Model Number: Gear ring blank
Material: 18CrNiMo7-6, 42CrMo4 , 34CrNiMo6 etc.
Heat treatment: Annealing,Normalizing,Tempering ,QT Etc .
Diameter: Max 5000mm
Delivery condition: rough material ,semi-finished ,finished machining
Process: Milling,Stamping,Turning,Forging+Machining(if Need)+surface Treatment
Standard: DIN,JIS,EN,ASTM,GOST
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Ring Gear Blank Forging 42CrMo4 Large Diameter Rolled rings manufacturers


Ring Gear Blank Forging 42CrMo4 Large Diameter Rolled rings manufacturers


Gear is one of the components with the highest technical content in industry. Through continuous and high starting point technical transformation. Guangda has introduced world-class high-precision equipment, established a complete quality management system and after-sales service network, and dedicated itself to providing users with high-quality products. Quality products and satisfactory service.​


Gear blank forging Product features


Material42CrMo4,42CrMo
ProcessEAF+LF+VOD+Forging+Rough machining+QT+Finish machining
Acceptance rate 0.8mm flaw detection100%
UTDIN EN10228 Quality-Class 3 C/c or D/d
DiameterMax 5000mm
Delivery stateRough blank, semi-finished blank,finishing gears
SurfaceBlack, peeled, polishing, bright, sand blast, hair line, etc.
ApplicationUsed for wind turbine gear box ,industril gear box,Generator, transmission, reduction motor, equipment transmission etc.

Gear blank forging 42CrMo4 Chemical Composition


StandardSteel desination nameNumberCSiMnPSCrMoNi
EN1008342CrMo41.72250.38-0.45≤0.40.60-0.90≤0.025≤0.0350.90-1.200.15-0.30-
EN1008342CrMoS41.72270.38-0.45≤0.40.60-0.90≤0.0250.02-0.040.90-1.200.15-0.30-

StandardSteel designation nameNumberCSiMnPSCrMoNi
EN1025042CrMo41.72250.38-0.45≤0.40.60-0.90≤0.035≤0.0350.90-1.200.15-0.30-

Gear blank forging procedure


Orging process flow quality control: Raw material steel ingot into warehouse(test the chemical content) → Cutting→ Heating(Furnace temperture test) → Heat treatment after forging(Furnace temperture test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal diamention, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment


High-precision dimensional tolerance;Excellent mechanical properties;Produce different dimension based on customer’s requirements;Advanced manufacture equipments and inspection devices;Excellent technical personality;Control the production procedure strictly;Pay attention on the package protection;Quality full service.



About Guangda for Gear blank forging
Zhangjiagang Guangda Special Material Co.,Ltd was established in 2003, is one of the forging manufacturer for research and development, production, sales, service as one of the comprehensive company. We located in Jiangsu Province besides Shanghai. We provide different forgings of shaft ,gear blank , ring rolling, rough machining, heat treatment and finish machining. Our annual production capacity is 500,000 tons for various of free-die forgings, ring rollings .
We are qualified by the classifications such as PED,DNV, BV, Rina, ISO, GL, ABS, LR .Act as the high-tech enterprises with high-quality special alloy materials as the core business belong to the "advanced iron and steel materials" industry under the strategic emerging industries supported by the state.
There are two major product systems of alloy materials and alloy products:The alloy materials include high quality gear steel, high quality die steel, special stainless steel, high temperature alloy, ultra-high strength steel and other new material products encouraged by the state; Alloy products mainly include wind power equipment, rail transit and various precision mechanical parts made of alloy materials.
Guangda forgings are widely used in high-end equipment manufacturing industries such as new energy wind power, rail transit, mechanical equipment, aerospace, new energy power, gas turbine, Marine petrochemical, semiconductor chip equipment and so on.
Guangda Core advantage
  • Listed company. Strong scientific research ability , Strength for Market experience and customer service .
  • Completed industrial supply chain smelting, casting ,forging, heat treatment , precision finished processing.
  • Better control for the cost ,quality,delivery term as we control every link of the completed chain.
  • Certificate PED,DNV, BV, Rina, ISO, GL, ABS, LR etc.
  • Different industry bases :Smelting,Forging,Cast steel, cast iron ,Precision Intelligent Manufacturing Base.
  • Experience:Cooperation with many Europe customers more than 10years




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