Heat treatment technology for reducing deformation of GCr15 thin-wall conical ring
A cone ring and thin-walled technology is applied in the field of reducing heat treatment deformation of GCr15 thin-walled cone rings, which can solve the problems of neglecting the deformation of GCr15 thin-walled parts, increasing machining costs, and large grinding allowance, so as to reduce deformation , The effect of reducing the cost of grinding and reducing the grinding allowance
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[0043]Taking the heat treatment process of a certain type of Φ136mm×19.5mm thin-walled cone ring as an example, the heat treatment technical requirements are: surface hardness 58-62HRC, ellipticity deformation ≤ 0.20mm (ellipticity deformation before heat treatment ≤ 0.10mm). A heat treatment process for reducing the deformation of the GCr15 thin-walled cone ring in this embodiment specifically includes the following steps:
[0044] (1) Parts preparation: The GCr15 billet after spheroidizing annealing is machined into a thin-walled cone ring part. Among them, the chemical composition of the GCr15 billet (GB / T18254-2002) is: C: 0.95~1.05; Mn: 0.20~ 0.40; Si: 0.15~0.35; S: ≤0.020; P: ≤0.027; Cr: 1.30~1.65; Mo: ≤0.10; Ni: ≤0.30; Cu: ≤0.25; Ni+Cu: ≤0.50; Spheroidizing annealing, after spheroidizing annealing, can make the subsequent quenching effect uniform, reduce quenching deformation, increase quenching hardness, improve the cutting performance of parts, and improve the wear re...
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