Method for manufacturing Cr-Ni-Mo-Nb nickel base alloy seamless tube
A technology of nickel-based alloy and manufacturing method, applied in the field of nickel-based alloy preparation, can solve problems such as cracking, and achieve the effect of overcoming the inability to cold-draw deformation and avoiding the problem of extrusion and delamination
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Embodiment 1
[0051] The design process for the finished product specification Φ25×2mm is as follows:
[0052]Tube blank preparation (Φ219mm) → hot extrusion (Φ140×12mm) → straightening → sawing → pickling → cold rolling (Φ114×10mm) → degreasing → heat treatment → straightening → sawing → pickling → cold rolling (Φ89 ×7mm) → degreasing → heat treatment → straightening → sawing → pickling → cold rolling (Φ57×5mm) → degreasing → heat treatment → straightening → sawing → pickling → cold rolling (Φ38×3mm) → degreasing → heat treatment → Straightening → sawing → pickling → cold rolling (Φ25×2mm) → degreasing → heat treatment → straightening → sawing → pickling → flaw detection → storage
[0053] The specific process is as follows:
[0054] (1) tube blank
[0055] It adopts forged and lathe-finished tube billets, and the specification is Φ219mm. The composition of the tube blank is as follows:
[0056]
[0057] (2) Blank preparation
[0058] Saw the forged tube billet into a 650mm / piece b...
Embodiment 2
[0110] The design process for the finished product specification Φ250×8mm is as follows:
[0111] Raw material preparation (Φ306mm) → hot extrusion (Φ194×22mm) → straightening → sawing → pickling → grinding → lubrication → cold rolling (Φ168×15mm) → degreasing → heat treatment → straightening → sawing → pickling → Lubrication → cold expansion (Φ250×14mm) → degreasing → heat treatment → straightening → sawing → pickling → lubrication → cold rolling (Φ219×8mm) → degreasing → heat treatment → straightening → sawing → pickling → lubrication → cold expansion (Φ250×8mm) → degreasing → heat treatment → straightening → sawing → pickling → flaw detection → storage
[0112] The specific process is as follows:
[0113] (1) tube blank
[0114] The forged tube blank is used, and the specification of the tube blank is Φ306mm. The composition of the tube blank is as follows.
[0115]
[0116] (2) Blank preparation
[0117] Saw the forged tube billet into 600mm / piece billets, and the ...
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