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通过对CoCrMoW合金电渣锭在两种不同的保温制度下保温后进行两种不同的锻造变形方式开坯锻造,研究了CoCrMoW电渣锭锻造保温温度及锻造变形方式对可锻性的影响。试验研究结果表明:CoCrMoW合金电渣锭在1220℃保温1 h后采用整体锻造,锻件的表面质量与内部质量良好;1200℃保温2 h后,采用整体锻造,锻件的表面质量良好,但是内部有缺陷产生;CoCrMoW合金电渣锭在1220℃保温1 h后锻造变形,电渣锭采用分段锻造时表面出现开裂,采用整体锻造时表面质量与内部质量良好;经过开坯后的小规格坯料再继续开坯或锻成品时,分段锻造与整体锻造均可采用。该合金合理的锻造保温温度为1220~1240℃,电渣锭锻造变形方式必须采用整体锻造;小规格锻造方坯变形方式宜采用整体锻造,但也可采用分段锻造。
The effect of forging holding temperature and forging deformation on the formability of the CoCrMoW electroslag ingot was studied by billet forging of two different forging deformation methods after two kinds of different forging deformation of CoCrMoW alloy electroslag ingot under two different heat preservation systems. The experimental results show that the surface quality and internal quality of CoCrMoW alloy electroslag ingot are maintained at 1220 ℃ for 1 h, and the surface quality and internal quality are good. After forging at 1200 ℃ for 2 h, the surface of the forgings is good, Defects were observed. The electroslag ingot of CoCrMoW alloy was forged for deformation at 1220 ℃ for 1 h, and the surface of the electroslag ingot was cracked by segmental forging. The surface quality and internal quality of the electroslag ingot were good when it was forged. Continue to billet or forging finished product, forging and overall forging can be used. Reasonable forging alloy holding temperature of 1220 ~ 1240 ℃, ESM ingot deformation forging must be used forging; small forging billet deformation should adopt the overall forging, but can also be used forging.