【摘要】：針對(duì)鍛造過(guò)程中鋼錠內(nèi)部裂紋缺陷的愈合情況進(jìn)行研究,設(shè)計(jì)了裂紋愈合的實(shí)驗(yàn)室模擬實(shí)驗(yàn)與工業(yè)級(jí)模擬實(shí)驗(yàn).通過(guò)在Gleeble熱壓縮試樣中預(yù)制裂紋缺陷,研究了變形溫度和變形量對(duì)內(nèi)部裂紋愈合的影響,發(fā)現(xiàn)變形溫度越高,變形量越大,內(nèi)裂紋的愈合效果越好.為了驗(yàn)證Gleeble實(shí)驗(yàn)結(jié)果的準(zhǔn)確性,保證其結(jié)果在實(shí)際鍛造生產(chǎn)中的適用性,設(shè)計(jì)了鍛件內(nèi)部裂紋愈合的工業(yè)級(jí)模擬實(shí)驗(yàn).結(jié)果表明在1200℃,變形量為40%時(shí),可以有效焊合鍛件內(nèi)部裂紋.
[Abstract]:Based on the research of internal crack healing of ingot during forging process, the laboratory and industrial grade simulation experiments of crack healing were designed. The effects of deformation temperature and deformation amount on internal crack healing were studied by prefabricated crack defects in Gleeble hot compression specimen. It was found that the higher the deformation temperature, the larger the deformation amount, the better the healing effect of internal crack. In order to verify the accuracy of Gleeble experimental results and ensure the applicability of the results in actual forging production, an industrial grade simulation experiment on internal crack healing of forgings was designed. The results show that the internal crack of the forging can be welded effectively at 1200 鈩，

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