Method for forging Venturi tubes
A Venturi tube and trace technology, which is applied in the field of forging, can solve the problems of failing to meet the standards, very high performance requirements of forgings, and inability to realize localization, etc., so as to achieve the effect of improving reliability and meeting technical requirements
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Embodiment 1
[0025] Embodiment 1: the requirement of manufacturing process among the present embodiment is:
[0026] 1. Material selection:
[0027] Choose φ360 electroslag remelting ingot, 890Kg / piece, the chemical composition of this φ360 electroslag remelting ingot should meet the following requirements:
[0028] Trace ≤ C ≤ 0.10%, Trace ≤ Si ≤ 0.50%, Trace ≤ Mn ≤ 1.00%, Trace ≤ P ≤ 0.015%, Trace ≤ S ≤ 0.010%, 14% ≤ Cr ≤ 17%, Ni ≥ 72%, 6% ≤ Fe ≤ 10%, trace ≤ B ≤ 0.0018%, trace ≤ Cu ≤ 0.50%, trace ≤ Al ≤ 0.50%, trace ≤ Ti ≤ 0.50%, the balance is unavoidable impurities
[0029] 2. Forging:
[0030] Cutting percentage of ingot head and ingot tail: 6% cut head of steel ingot, 9% cut tail.
[0031] 1) The steel ingot is heated to 450°C and kept for 2 hours; then heated for 6 hours to make the temperature reach 950°C and kept for 2 hours; then heated for 3 hours to make the temperature reach 1130°C, kept for 2 hours and pulled out.
[0032] 2) In the temperature range of 1130°C-850°C, the...
Embodiment 2
[0040] Embodiment 2: the requirement of manufacturing process among the present embodiment is:
[0041] 1. Material selection:
[0042] Choose φ360 electroslag remelting ingot, 890Kg / piece, the chemical composition of this φ360 electroslag remelting ingot should meet the following requirements:
[0043] Trace ≤ C ≤ 0.10%, Trace ≤ Si ≤ 0.50%, Trace ≤ Mn ≤ 1.00%, Trace ≤ P ≤ 0.015%, Trace ≤ S ≤ 0.010%, 14% ≤ Cr ≤ 17%, Ni ≥ 72%, 6% ≤ Fe ≤ 10%, trace ≤ B ≤ 0.0018%, trace ≤ Cu ≤ 0.50%, trace ≤ Al ≤ 0.50%, trace ≤ Ti ≤ 0.50%, the balance is unavoidable impurities
[0044] 2. Forging:
[0045] Cutting percentage of ingot head and ingot tail: 6% cut head of steel ingot, 9% cut tail.
[0046] 1) The steel ingot is heated to 450°C and kept for 2 hours; then heated for 6 hours to make the temperature reach 950°C and kept for 2 hours; then heated for 3 hours to make the temperature reach 1130°C, kept for 2 hours and pulled out.
[0047] 2) In the temperature range of 1130°C-850°C, the...
Embodiment 3
[0055] Embodiment 3: the requirement of manufacturing process among the present embodiment is:
[0056] 1. Material selection:
[0057] Choose φ360 electroslag remelting ingot, 890Kg / piece, the chemical composition of this φ360 electroslag remelting ingot should meet the following requirements:
[0058]Trace ≤ C ≤ 0.10%, Trace ≤ Si ≤ 0.50%, Trace ≤ Mn ≤ 1.00%, Trace ≤ P ≤ 0.015%, Trace ≤ S ≤ 0.010%, 14% ≤ Cr ≤ 17%, Ni ≥ 72%, 6% ≤ Fe ≤ 10%, trace ≤ B ≤ 0.0018%, trace ≤ Cu ≤ 0.50%, trace ≤ Al ≤ 0.50%, trace ≤ Ti ≤ 0.50%, the balance is unavoidable impurities
[0059] 2. Forging:
[0060] Cutting percentage of ingot head and ingot tail: 6% cut head of steel ingot, 9% cut tail.
[0061] 1) The steel ingot is heated to 450°C and kept for 2 hours; then heated for 6 hours to make the temperature reach 950°C and kept for 2 hours; then heated for 3 hours to make the temperature reach 1130°C, kept for 2 hours and pulled out.
[0062] 2) In the temperature range of 1130°C-850°C, the ...
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