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发明公开
CN106834642A 一种GH6783合金棒材的最优化锻造工艺 有权

一种GH6783合金棒材的最优化锻造工艺
摘要：
本发明公开一种GH6783合金棒材的优化锻造工艺，通过改进加热工艺，采用阶梯控温，分级锻造的方式，可以达到提高合金塑性，使锻态β相分布均匀的目的。本发明技术方案如下：GH6783合金棒材的锻造工艺流程为锭坯加热→首火次锻造→中间火次锻造→末火次锻造→棒材精整→棒材性能检验→棒材精整→棒材性能检验；通过锭坯加热过程中在820℃～880℃之间的过时效处理，提高GH6783合金钢锭塑性，通过阶梯控温锻造的方式促进锻态β相的细化和均匀分布。本发明的优点在于：第一、通过820℃～880℃的过时效处理，大幅度提高合金塑性，降低了后续加工难度；第二、通过阶梯控温锻造，促进β相的不断回溶析出，进一步使β相均匀细小分布。
摘要（英）：

The invention discloses an optimal forging process of a GH6783 alloy rod; and through improvement of a heating process, and a mode of gradient temperature control and classified forging is adopted to achieve the purposes of improving the alloy plasticity and uniformly distributing forging-state beta phase. The optimal forging process of the GH6783 alloy rod comprises the flow of ingot heating-primary heating number forging-middle heating number forging-final heating number forging-rod finishing-rod performance inspection-rod finishing-rod performance inspection; through overaging treatment in the ingot heating process within 820-880 DEG C, the plasticity of a GH6783 alloy steel ingot is improved; and through a gradient temperature control forging mode, the refining and the uniform distribution of the forging-state beta phase are improved. The process has the following advantages: (1) through overaging treatment within 820-880 DEG C, the alloy plasticity is greatly improved, and the subsequent machining difficulty is reduced; and (2) through gradient temperature control forging, the continuous redissolution separation of the beta phase is accelerated to further uniformly and finely distribute the beta phase.

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