【摘要】：Φ18 mm規(guī)格軸承鋼盤條GCr15-Y在用戶冷鐓套圈毛坯時出現(xiàn)開裂,對開裂樣品進行低倍、硬度、碳化物、斷口、晶粒度等檢測,發(fā)現(xiàn)斷口存在過熱組織,且套圈外壁晶粒度明顯比基體晶粒度要粗,認(rèn)為與原始盤條加熱工藝即鋼坯在加熱過程中局部過熱有關(guān)。在后續(xù)GCr15-Y生產(chǎn)過程中,通過對軸承鋼坯料入爐位置進行優(yōu)化、降低加熱溫度、控制高溫段加熱時間等措施控制原始盤條不產(chǎn)生過熱組織,用戶冷鐓套圈未再出現(xiàn)開裂現(xiàn)象。
[Abstract]:桅 18 mm bearing steel wire rod GCr15-Y cracked when the user cold heading ring blank. The cracking sample was detected by low power, hardness, carbide, fracture and grain size, and the overheated structure was found in the fracture surface. The grain size of the outer wall of the ring is obviously larger than that of the matrix, which is related to the local overheating of the billet during the heating process of the original wire rod. In the following GCr15-Y production process, by optimizing the feeding position of bearing steel billet, lowering the heating temperature and controlling the heating time of high temperature section, the original wire rod does not produce overheated structure and the user cold heading ring does not crack again.
【作者單位】： 南京鋼鐵有限公司;
【分類號】：TG115

【相似文獻】

相關(guān)期刊論文 前10條

1 孫富;冷鐓工藝的實踐及其經(jīng)濟效益分析[J];現(xiàn)代零部件;2004年08期

2 趙自義,雍治文,吳從善;冷鐓鋼盤條冷鐓開裂原因分析[J];金屬制品;2005年05期

3 宋強;倪達;;中碳冷鐓鋼冷鐓爆裂原因分析[J];冶金標(biāo)準(zhǔn)化與質(zhì)量;2007年03期

4 高永彬;張力;亓奉友;孫理;陳亮;;冷鐓鋼盤條冷鐓不合格原因分析[J];金屬制品;2008年03期

5 鄭雨e，

本文編號：2287039