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Forging Ring - 4140 Material
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Forging Ring - 4140 Material

Forging ring
Dimensions: Dia 100mm to 3000m
Thickness: 30mm to 1000mm
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Features:

4140 forgings, this forgings has good machinability, processing deformation is small, fatigue resistance is quite good, such as hardenability steel,4140 forgings after heat treatment of better strength and good comprehensive mechanical properties, good processability, high yield. The maximum operating temperature is 427 degrees Celsius.4140 forgings have hard strength, high hardenability, good toughness, small deformation during quenching, and high creep strength and lasting strength at high temperature. It is used to manufacture forgings requiring higher strength and larger tempering cross-section than 35CrMo steel, such as large gear for locomotive traction, supercharger transmission gear, rear shaft, connecting rod and spring clamp with great load, and can also be used for drilling pipe joints and fishing tools in oil deep Wells below 2000m, and can be used for bending machine molds.

forged rolled rings

Heat treatment:

1. Normalizing: Enter the furnace and heat to 900℃ ~ 930℃, each inch of the thickest cross section at the temperature for one hour, air cooling. 2. Heat to 860 ° C ~ 885 ° C temperature austenitizing, each inch of the thickest cross section at the temperature of one hour. 3. Normalizing or oil quenching, cooling to a maximum temperature of 121℃

4. Temper at a temperature that can achieve the following mechanical properties, and hold heat at the tempering temperature for one hour per inch of the thickest cross section.

The tempering temperature ranges from 640 ° C to 680 ° C.

5. Heat treatment chart m Heat treatment: ust be drawn for each heat treatment operation process.

6. The mechanical properties test shall be carried out in accordance with the provisions of ASTM.A-370, and the sample material used for the test shall be from the test rod of the same furnace steel

upcut

The castings or forgings represented by the sample and the test rod shall be in the same furnace, and the test rod shall be processed with the charge in the same furnace.

7. Mechanical properties shall meet the following requirements: (To test with a test stick, sample according to API 6A, 110K standard) Tensile Strength Minimum pound/inch 125.000(862) Yield strength minimum pound/inch 110.000(758) 2 inch elongation minimum % 15 Section shrinkage minimum % 40 Brinell hardness HB 285-352

8. Marking: Each part must be printed with low stress steel marks for heat treatment and hardness.



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