摘要
通过对GH4698合金大规格环形件试制过程中易出现的问题进行分析,采取措施,制定工艺,得出以下结论:采用4500压机+精锻机制坯生产方式生产的GH4698合金棒材组织均匀细小,低、高倍组织合格,成材率有较大的提高;采用双层软包套技术可保证GH4698合金温度处于最佳温度区间内,防止热加工过程开裂;制定的冶炼、热加工工艺合理,生产的GH4698合金大规格环形件满足成分、组织、性能、超声波探伤等标准要求。
Based on the analysis of problems occurred easily in the trial-manufacturing process of GH4698 alloylarge size ring, taking measures, formulating process, the following conclusions are drawn： the GH4698 alloy bar pro.duced by using 4500 press ＋ precision forging machine has uniform and fine structures, qualified microstructures andmacrostructures, the yield of which is greatly improved; the technology of the double soft casings can ensure the work.ing temperatures of GH4698 alloy in the best temperature range to prevent cracking during hot working; the formulatedsmelting and hot working processes are reasonable, the produced large size rings of GH4698 alloy meet the standard re.quirements of compositions, structures and properties, and ultrasonic inspection.
出处
《特钢技术》
CAS
2016年第2期41-44,共4页
Special Steel Technology
