轴承钢环件轧制端面凹坑与折叠缺陷原因分析.pdf

轴承钢环件轧制端面凹坑与折叠缺陷原因分析刘小刚null 吴永安null 宋null 捷null 荣继祥null 袁洪虎null 项春花(LÜtÓ S/?ZµK³,LÜ550081)K1:ŒàõÑÌqAÅÏÁ3¥ëÇ `Ð|ßŒJÉ›sbLl£ü,²Ya eŸڄ† ØÄ¥å_aà_AÅ ï V[“vñ¿ÿàõÑÌqAÅëÇ `Ð|ßŒJb1oM:àõÑ;Ìq;AÅÏms Ë|: TG335null nullÓDSM’: BTheReasonAnalysis for theDepression andOverlapDefectson Rolling Ends ofR ing Shaped Pieces of Bearing SteelLiu Xiaogang, Wu Yongan, Song Jie, Rong Jixiang, YuanHonghu, Xiang ChunhuaAbstract: This paper has been analyzed for the depression and overlap defects on rolling ends of ring shapedpieces of bearing stee.l The resultshows that the depression and overlap defects on rolling ends of ring shaped pieces ofbearing steel can be improvedw ith riveting upsetting, strict controlling the blank height, and reasonablematching theradial and axial rolling load.K ey words: bearing stee;l ring shaped pieces; rollingnull nullAÅ^¨Ì™°¸È¥ ÏɛBÕ+Õî™ý\b+Ä^¹ùAÌ„AÅ d˜PÌqÁ3 õà †ÑŸM™, V®€/LCC¨hla°å ”v„©ë} •î™b®¿«‹a«?©B"ªÄ7$ 180 kg,“å> 700 mmq):/nullF£nullYnulldnullçAaÜënullÔAb¨Ný\^L¥q°¸C¨Bî ¨,çAH4çö™îðSÇ `bî[ŸH,°¸Ú‹ô ÁÖ²† Ø¥=µ@¥Å,ªÃçAªÜëh"hlðSÇ `bBî¿Ú¨1< 3¥q,°¸Ú‚R1qÚÚþ,Ž5ªÃAÅÏ®¿à_AÅVv^C=“å%„JHŒJ;¿Ú¨1null3¥q,®¿Ú Ú,‹ÚZ_@îE ï v,AÅVñÏÚZ_j'‚9É,Ï°¸ÚÀµ@Å,ªÃAÅVñÏà_AÅüÀµ@¥/â eÅëÇ `¥Á3bÂV3îU¥ÁÖ, 7S3ÁHŸڂ^“† Ø,°¸ÚÅ‚@,ÁÁÖëCø×¥Ç `(Âm8)bYVØœ°¸Úª,]¸ëÇ `ŒJ¥Á3,ëÉ z(Âm9)bN“,¾ý\ZÃçAHÏ‚ VEçÁ3ëÇ `,‹Ð eÅÇ `¹õ¶VÇ `(Âm10),EçÁ3U˜Ç `(Âm11)bõ¶VÇ `ªÃÜëHL¿h"hl,U˜Ç `5“4ÜëVñh"bV3nullÁ֐Table 3null Product information‹‡|î™j/mm×/ kg3311 MPP null 778+ 6- 4 nullnull 678+ 4- 6 null 387+ 6- 4 35018No. 1 nullv˜üqnullJanuary 2011 HEAVY CASTING AND FORG INGm8nullØœ°¸Ú-qF igure 8null Forgings before adjusting blank heightm9nullØœ°¸ÚªqF igure 9null Forgings after adjusting blank height4null²‚1)YV3Á?C,² VhlŸHÁ3¥ðSëŒJb2)ŸH,‹ô ‚]¥ÁÖ²† Ø¥ eÅ°¸Újbm10nullõ¶VÇ `F igure 10null Depressionw ith circular arc transitionm11nullU˜Ç `F igure 11null Depression with sharp corner3)AÅH,å_AÅ ïÐà_AŠ牢 ØÄ¥ V“z¥]¸ëÇ `Ð|ßŒJb• IÓD[ 1] nullÏS€ýñÐöâÐöI.âm¨. 2008M1.[ 2] null¦[¿.!9/Œ#L è[ J].Ø:€ý<ñ,2009. 1.I nullC Üynull null (¤»15:)3nullkŲT3. 1null“™j_°¹£=Ë“™j¥’Ÿ,Vn»kÅ¥10q°¸Ïò|qÉ›8† „ØUS_©b_©²TAU¾»=Ë¥“™jÐî!9¥“™j'Ö†,?£ªÃFý¥Å,OÅsƒ ¹ (b3. 2null ïП?#ÁMF®_°n»kÅ¥°¸¿ý\@ñÉ›£)Ø,|Bq°¸É›åÊŸkbk²TVü,=Ërž!9³1¥ ïП?,ÁMF®„Ö ì9˜†1pb• IÓD[ 1] null Ùîÿ©I.â/Œm¨.Ø:S]ý<ñ.[ 2] nullf½ÓI./ý\Ð.Ø:€ý<ñ.[ 3] null;\öI. !9ÐÅ/$.Ø:È0ý<ñ.[ 4] nully^ZI÷./ eü!9m¨.Ø:ÄÐý<ñ.[ 5] null£A ÜöI.ÈýñÁ‹‹m¨.Z:Z SÐ/Œñ.[ 6] null-6 öI./ý\ÐÐ !9.½:ý<vÐñ.I nullC Üy19nullv˜üqnull No. 1HEAVY CAST ING AND FORG ING January 2011。