Copper-nickel alloy seamless tube and manufacturing method thereof
A technology of copper-nickel alloy and manufacturing method, which is applied in the field of seamless pipes, can solve problems such as difficult washing off of scale, high deformation resistance, and high deformation difficulty, and achieve good stress state, reduced corrosion, and good corrosion inhibition effect Effect
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Embodiment 1
[0047] A method for manufacturing a copper-nickel alloy seamless pipe, comprising the steps of:
[0048] Step 1, smelting. During smelting, an induction furnace is used for smelting, and ultrasonic stirring is used. The ultrasonic frequency is 40KHz, so that the nickel and copper are evenly mixed. Its chemical composition is calculated by weight percentage: Ni≥63, Cu28-34, Fe≤2.5, Mn≤2, C<0.3, Si<0.5, S<0.024, and the balance is unavoidable trace elements.
[0049] Step 2, electroslag remelting, an argon protection device is designed in the electroslag remelting pool, and argon protection is implemented for the electroslag remelting process.
[0050] Step 3, casting a circular tube blank.
[0051] Step 4: Heating the circular tube; the heating temperature is 915-955°C.
[0052] From the heating furnace used to heat the round tube blank in the step 4 to the piercer for piercing the circular tube blank in the step 5, a heat preservation channel for the circular tube blank to p...
Embodiment 2
[0062] A method for manufacturing a copper-nickel alloy seamless pipe, comprising the steps of:
[0063] Step 1, smelting. During smelting, an induction furnace is used for smelting, and ultrasonic stirring is used. The ultrasonic frequency is 40KHz, so that the nickel and copper are evenly mixed. Its chemical composition is calculated by weight percentage: Ni≥63, Cu28-34, Fe≤2.5, Mn≤2, C<0.3, Si<0.5, S<0.024, and the balance is unavoidable trace elements.
[0064] Step 2, electroslag remelting, an argon protection device is designed in the electroslag remelting pool, and argon protection is implemented for the electroslag remelting process.
[0065] Step 3, casting a circular tube blank.
[0066] Step 4: Heating the circular tube; the heating temperature is 915-955°C.
[0067] From the heating furnace used to heat the round tube blank in the step 4 to the piercer for piercing the circular tube blank in the step 5, a heat preservation channel for the circular tube blank to p...
Embodiment 3
[0077] A method for manufacturing a copper-nickel alloy seamless pipe, comprising the steps of:
[0078] Step 1, smelting. During smelting, an induction furnace is used for smelting, and ultrasonic stirring is used. The ultrasonic frequency is 40KHz, so that the nickel and copper are evenly mixed. Its chemical composition is calculated by weight percentage: Ni≥63, Cu28-34, Fe≤2.5, Mn≤2, C<0.3, Si<0.5, S<0.024, and the balance is unavoidable trace elements.
[0079] Step 2, electroslag remelting, an argon protection device is designed in the electroslag remelting pool, and argon protection is implemented for the electroslag remelting process.
[0080] Step 3, casting a circular tube blank.
[0081] Step 4: Heating the circular tube; the heating temperature is 915-955°C.
[0082]From the heating furnace used to heat the round tube blank in the step 4 to the piercer for piercing the circular tube blank in the step 5, a heat preservation channel for the circular tube blank to pa...
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