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Specifications
hard tooth surface gears, including spur gears,gear shafts and gear rings.gear box, spur gear, bevel gear,hardened gearOur company has the ability to forge, quench and temper, process, surfuce quench and carbonize high precision soft/ hard-surfaced gear or gear shaft. The main specification is within Φ2000mm, Mn≤40mm. Our company can produce 4000 tons of gears and gears shafs annually, and can produce different products according to our custumers’ requirements.
The main technical parameters of gear
1.Standard of materials: GB/T3077-1999
2.The grade of materials: 45, 20Cr, 40Cr , 35Cr Mo , 42Cr Mo, 20CrMnMo, 20CrMnTi, 17CrNiMo6, 20CrNi2Mo
3.Standard of pruduction: ISO1328-1995
4.Smelting method: electric arc furnace + refining furnace
5.Precision accuracy: according to GB/T10095-88 standard, within five degrade
6.Hardness: 56-60 HRC is the hardest; 40-55 HRC is the average hardness; below 28 HRC is the soft
7.Detection methods and the implementation of standards
Samples are from the same furnace
Tensile test is done according to GB/T288-2002 standard
Hardness test is done according to GB/T231 standardStandard of ultrasonic flaw detection
All forging pieces must go through the GB/T6402-1999 standard ultrasonic flaw detection, grade two. If the forging pieces are within 1000 kgs, they can reach the GB/T6402-1999 standard, grade one.
1.Manetic particle testing
Every product must be tested after the surface quenching and machining.
Method: magnetic particle testing
Satisfying products: no crac, scab, white dot or fold. Repair welding is not allowed.
Statistics above are for reference. We can produce according to different requirements.
1.Parking: wood package for shipping (see below)
2.Flow chart of hard gear production
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