• <samp id="u8mge"></samp>
  • <samp id="u8mge"></samp>
  • <samp id="u8mge"><s id="u8mge"></s></samp>
    論文網首頁|會計論文|管理論文|計算機論文|醫藥學|經濟學論文|法學論文|社會學論文|文學論文|教育論文|理學論文|工學論文|藝術論文|哲學論文|文化論文|外語論文|論文格式
    中國論文網

    用戶注冊

    設為首頁

    您現在的位置: 中國論文網 >> 計算機論文 >> 計算機理論論文 >> 正文 會員中心
     計算機應用論文   計算機理論論文   計算機網絡論文   電子商務論文   軟件工程論文   操作系統論文   通信技術論文
    變速箱油泵齒輪低壓真空滲碳工藝
    【摘 要】 目前,在汽車行業,滲碳是使用最為廣泛的表面硬化工藝方法,而乙炔作為滲碳介質的工藝已被廣泛的開發和應用,2013年我公司購買進口設備——雙室真空滲碳油淬爐,主要用于變速箱油泵齒輪低壓真空滲碳,該設備采用低壓乙炔滲碳為脈沖式,即強滲→擴散→強滲→擴散,多個循環后達到所要求的滲層深度,由于沒有類似可控氣氛中的氧探頭傳感器,無法對低壓滲碳過程進行直接監控,采用乙炔真空滲碳數據庫,對滲碳和擴散過程進行精確監控。使滲碳層更加均勻,變形量小等優點。
      【關鍵詞】 低壓真空滲碳 乙炔 avav專家模擬程序
      1 低壓真空滲碳工藝過程
      1.1 滲碳前的準備
      檢查工藝路線、零件數量及試樣數量是否正確。檢查零件圖號、材料牌號、零件數量、試樣數量等。滲碳前工件專用清洗劑進行清洗,除去零件表面臟物,清洗后哄干。
      滲碳零件每批需帶與零件材料相同、同一表面粗糙度的試樣5件,用以確定滲層深度、硬度檢驗等。如零件數量較大,超過一滲碳爐數量時,應向申請車間提出增加試樣數量,具體數量由調度組協商確定。
      檢查高純乙炔和高純氮氣(n2)的儲備量;檢查傳料臺是否在“安全位置”;檢查富化氣的流入管及廢氣排出管是否暢通;檢查電器、儀表是否能正常工作。
      2 工件的滲碳
      2.1 設備型號
      rvfoq(avac)-524(fv)-1bar。
      2.2 材料牌號及工藝參數
      材料:20crmnti;相關的滲碳工藝參數:設定的工件表面碳濃度為:1.00%;工件臨界碳濃度為:0.40%;滲碳時設定爐氣碳勢最高值:1.05%;乙炔氣體流量:每平方米200l/h;淬火油油溫:60-80℃。www.zhidachem.com滲碳溫度:920±10℃;保溫時間及滲碳擴散時間:按照“ipsen vacu-prof 4.0”模擬專家模擬時間計算。
      2.3 工藝過程
      將工件擺放在指定的工裝上,擺放均勻。入爐工件及工裝應進行清洗并烘干,不應有銹斑,不應有對工件、爐膛產生有害影響的污物、低熔點涂層、鍍層等。
      接通水系統電源及主電源開關,檢查面板有無報警,將“泵+外部冷卻水關”開關打到“0”。水系統的循環泵、風機及噴淋泵的開關設置在自動位置,出水壓力為0.15-0.3mpa。氮氣罐充氣壓力達到0.4-0.8mpa,按下主控制柜上的“驅動開”按鈕。檢查爐門前機械式壓力表的指針是否在1000mbar的位置,如果不是,需要按下爐門控制柜“冷卻室充氣”按鈕,使壓力達到1000mbar,與大氣壓平衡,按下“開門”按鈕,打開爐門,用裝/卸料車將工件送到爐門前,將工件送入冷卻室。退出裝/卸料車,觀看料盤位置,按下“關門”和“爐門關閉安全提示”按鈕,關閉爐門。將加熱室超溫儀表調到比工藝要求高出10-20℃。在電腦vacu-prof系統的“程序”中選擇待處理工件所需工藝,按“新程序 →爐子”。滲碳時打開乙炔氣瓶及閥門,壓力表壓力為1.0-1.5mbar,在控制柜上依次按下“加熱室泵循環開”、“冷卻室泵循環開”、“外部加熱過程循環開”和“工作循環開”按鈕,程序運行。當在爐內壓力抽至低于10pa,真空室基本達到無氧條件時,真空爐開始加熱。
      工件采用脈沖方式供氣;真空室達到設定滲碳溫度,通入乙炔,控制爐內壓力在10-1000pa之間,這時進入第一滲碳時段。當工件表面達到該滲碳溫度下的奧氏體中的碳的溶解度極限值時,停止通入乙炔,并對真空室抽真空,進入擴散時段。滲碳時段和擴散時段重復進行,直至工件的滲碳層深度符合要求。富化氣單個脈沖時間不應小于50s。
      真空爐開始降溫至淬火溫度后進行淬火操作,淬火時,油淬室應充入高純氮氣,壓強為400mbar-800mbar。淬火時,油槽應進行攪拌和循環冷卻。
      程序運行結束,出爐鈴響,將冷卻室回沖高純氮氣至1000mbar,到主控制柜上按“外部加熱過程循環關”和“加熱室泵循環關”按鈕到爐前控制柜上按下“開門”按鈕,爐門打開,工件在冷卻室放置10-20分鐘。
      2.4 清洗(設備型號:wpsd-5-e)
      工件應冷至到小于100℃出爐,油淬工件出爐后經進行清洗除油,保證后續回火時工件無油污,清洗機水溫為60-80℃。清洗劑采用專用清洗劑,濃度為1.0-3.0%。
      2.5 回火(設備型號:d-5-e)
      回火溫度:180℃±10℃;保溫時間:120min。氮氣保護:氮氣流量當兩電磁閥都開壓力為4nm3/h,單閥開啟時壓力為2nm3/h。
      注:淬火后至回火間隔時間不應超過4h。

    r>  3 檢驗結果
      硬度及滲碳層深度見表一,金相組織見圖一和圖二。
      4 結語
      低壓真空滲碳可以使齒輪各處滲碳層更加均勻。除此之外,低壓真空滲碳還具備以下一些特點:
      (1)低壓真空滲碳可以大幅度降低生產成本和大幅度提高設備利用率。這是因為低壓真空滲碳的氣氛非常簡單,強滲期僅需乙炔,擴散期僅需氮氣且壓力非常低,因此使用氣氛的成本顯著降低。
      (2)由于低壓真空滲碳的控制系統能夠對滲碳工藝進行精確控制,因此所處理的工件有良好的重復性,且工件變形小、表面光亮。
      (3)低壓真空滲碳采用冷壁真空技術,無點火裝置,無失火危險,無污染,潔凈、安全,設備操作簡單、維修容易。總之,低壓真空滲碳比傳統的氣氛滲碳具有很大的優勢。
      參考文獻:
      [1]包兒,田紹潔.真空熱處理[m].遼寧科學技術出版社,2009.
      [2]jb/t11078-2011.鋼件真空滲碳淬火[s].
      [3]jb/t3999-2007.鋼件的滲碳與碳氮共滲淬火回火[s].
  • 上一個計算機論文:
  • 下一個計算機論文:
  •  更新時間:2014-08-31 10:49:50  作者:佚名 [標簽: 變速箱 齒輪 低壓 真空滲碳 工藝 ]
    姓 名: *
    E-mail:
    評 分: 1分 2分 3分 4分 5分
    評論內容:
    發表評論請遵守中國各項有關法律法規,評論內容只代表網友個人觀點,與本網站立場無關。
    沒有相關計算機論文
    | 設為首頁 | 加入收藏 | 聯系我們 | 網站地圖 | 手機版 | 論文發表

    Copyright 2006-2013 © 畢業論文網 All rights reserved 

     [中國免費論文網]  版權所有

    澳客彩票平台澳客彩票主页澳客彩票网站澳客彩票官网澳客彩票娱乐 61789d.com | www.7920l.com | ylzz1110.com | www.86611a.com | www.mgm868005.com | 0729b.com | www.50051u.com | feicai0873.com | www.7111g.com | www.81678m.com | ylzz1117.com | www.433345.com | 4136c.com | www.0004111.com | ahg0088.com | www.21511x.com | www.4719cc.com | 6601wz.com | www.73990r.com | 5am.vip | www.371d.cc | www.8814e3.com | 5005i.com | www.4408598.com | 01885a.com | www.66ffi.com | www.3643k.com | 2844g.com | www.2021f.com | 80850vv.com | www.0014u.com | www.zdj70.com | 33vn77.com | www.o3410.com | 996622tt.com | www.706515.com | www.6677104.com | 3640yy.com | www.4648.cc | www.1118xj.com | feicai0511.com | www.382626.com | yth008.net | www.33063.cc | www.c8888.net | 9101908.com | www.68993251.com | www.pjsichuan.com | 2147004.com | www.6880cc.com | 3121ff.com | 29918c.com | www.2544g9.com | 9995i.cc | 3121a.com | www.jsdc9111.com | www.68818z.com | 22207a.com | www.500166.com | www.39695k.com | 84494400.com | www.b991qp.com | www.zdj70.com | 09090524.com | www.cp8009.cc | www.kk4666.com | 4152m.com | www.330865.com | www.wnsr3526.com | 88851e.com | www.52072a.com | www.38775uu.com | www.ag9655.com | 918dp.com | www.96386n.com | www.224333222.com | 66671c.com | www.564696.com | www.6669ylg.com | 8036kk.com | 50000997.com | www.635799.com | www.pj66615.com | 382228.com | www.606865.com | www.c7764.com | www.9130.com | 00119193.com | www.tlcp4.com | www.h9478.com | vip56787.com | 0033g.cc | www.8039c.com | www.pj7608.com | pj38pj38.com | 0080a.com | www.5091z.com | www.js408.com | jiandu05.com | 5647q.com | www.9149p.com | www.79500y.com | 59889y.com | 31325a.com | www.07163s.com | www.7793a.com | 6601.cc | 159666f.com | www.6769q.com | www.5099cc.com | www.long6668.com | 1458c.com | www.131873.com | www.56011g.com | www.xpj130.com | 103boo.com | baidu169.com | www.34czj.com | www.89599t.com | www.888vm.com | 1463r.com | www.528121.com | www.flb177.com | www.xpj6238.com | 33318n.com | 1679dd.com | www.hx1111.com | www.xpj778888.com | www.00618k.com | blm655.com | 00q124.com | www.fcyl4.com | www.78680b.com | www.js936.com | 55818y.com | 3189e.com | www.233896.com | www.sx1811.com | www.d5669.com | www.mgm3838.com | 2jsiii.com | 77605h.com | www.505162.com | www.bet73y.com | www.7415ss.com | www.z22365.com | 36536502.win | lehu998.com | 7720w.com | www.1368h.cc | www.68993262.com | www.777jyh.com | www.22885004.com | 7792l.com | 4018v.com | xpj98618.com | www.638807.com | www.868223.com | www.xybets6.com | www.56992.com | www.yh66609.com | bet28j.com | 3957e.com | v1973.com | www.737884.com | www.1358004.com | www.6666yh.com | www.242365.com | www.dfs788.com | 54240066.com | 2018nsb.com | 690824.com | www.798288.com | www.87668y.com | www.7036000.com | www.5049j.com | www.2200365.com | www.7009844.com | 73055e.com | 5478.com | 5369z.com | 3511.sbf822.com | www.477575.com | www.5086l.com | www.dayou566.com | www.56011k.com | www.4136h.com | www.8886567.com | www.40033.1340033.com | 6594ll.com | 33382b.com | 1454445.com | zhcp59.com | 31325z.com | 3202g.com | www.83033o.com | www.862810.com | www.7793h.com | www.89894h.com | www.hg0296.com | www.115527a.com | www.55070q.com | www.94675.com | www.304999.com | www.0860e.com | www.amh04.com | 58802g.com | 2306r.com | 33rr8332.com | ddcp88.com | 32666n.com | b4116.com | 6567.com | 9068r.com | 746.com | y68357.com | 1669m.com | 90307b.com | 6363dd.com | 6118a.com | 56987jj.com | www.92967a.com | www.332052.com | www.510830.com | www.701671.com | www.868422.com | www.c103.cc | www.ya150.com | www.c6465.com | www.w931.com | www.975961.com | www.979673.com | www.081wy.com | www.918jo.com | www.622by.com | www.w935.com | www.791561.com | www.760169.com | www.701540.com | www.663738.com | www.545669.com | www.510860.com | www.253230.com | www.106056.com | 566671100.com | 2820g.com | 0600y.cc | 28824t.com | 8a8u.com | 4107m.com | 6662012.com | 8577j.cc | js14j.com | www.1018555.com | www.67797x.com | www.amxhtd8.com | www.11099.com | www.20553311.com | www.ggu.99233u.com | www.04567q.com | www.f063801.com | www.pj9010.com | www.97655d.com | www.zfcp5.com | www.545680.com | www.29178e.com | b47479.com | feicai0873.com | i45638.com | 22299ll.com | 66003885.com | www.76543z.com | www.5254y.com | www.8582uu.com | www.26123jj.com | www.yjxxelxx.com | www.12455z.com | www.933709.com | www.202374.com | 1105596.com | 23599g.com | 54146699.com | xx2649.com | www.qqqqkkkk.com | www.063260.com | www.5517.ag | www.86450.com | www.lczg7.com | www.297757.com | xin98886.com | 36401122.com | 1624.com | www.aw6789.com | www.dggcp100.com | www.111158.com | www.1035t.com | www.178615.com | 1168p.com | 66665.biz | 2418005.com | www.2078q.com | www.cp0017.com | www.siji07.com | www.1035w.com | www.117015.com | 2096q.com | 3550m.com | www.b67783.com | www.30370000.com | www.7225x.com | www.99788l.com | www.524947.com | 390955.com | 4152e.com | www.bm1100.com | www.699603.com | www.742988.com | www.27czj.com | 69-xpj.com | 793929.com | 50024444.com | www.773456.com | www.xpj8118.com | www.c8704.com | o2306.com | 3957o.com | www.pjdc2288.com | www.yh8878n.com | www.16878a.com | www.303476.com | 80368xx.com | 2350.com | www.hndf333.com | www.js00868.com | www.605134.com | ribo25.cc | 2455l.com | www.60sun.com | www.xpj8896.com | www.666507.com | 1294i.com | 6245o.com | www.hg6912.com | www.179101.com | www.299850.com | 0234a.com | www.ylg3099.com | www.614548.com | www.43818j.com | 668cp55.com | wns173.com | www.dhygw994.com | www.747365a.com | www.178615.com | 4556q.com | www.00829p.com | www.566733.com | www.937182.com | 93777.com | 3535394.com | www.94675.com | www.5854a.cc | 4023k.com | cc99151.com | www.t9478.com | www.8499a.com | 4025v.com | xpj70069.com | www.00773x.com | www.988456.vip | www.631609.com | www.569680.com | 075nn.com | www.32666u.com | www.52062l.com | www.60108a.com | 3559aa.com | www.xpj403.com | www.77803p.com | n5429.com | jlshckj.com | www.9737tt.me | www.839658.com | 80892a.com | www.xin888999.com | www.522665.com | www.52072i.com | hjdc2018.com | www.c559.com | www.652561.com | j4389.com | www.552772.com | www.26299g.com | 8000524.com | www.yh8220.com | www.97828c.vip | 70118c.com | 6220yy.com | www.1429h1.com | www.232651.com | 3522hh.com | www.224333000.com | www.828326.com | 8037e.com | www.34388a.com | www.fh17.com | 5856jjj.com | www.dr1199.com | www.02czj.com | 444000s.com | www.266555c.com | www.11tdc.com | lll67890.com | www.pj6667.com | www.hf5889.com | 51133tt.com | www.8707y.com | www.704126.com | 28288w.com | www.600w.com | www.099836.com | 9949g.com | www.4196x.com | 2381rrr.com | www.a1a000.cc | www.ejylc16.com | bet99331.com | www.xpj0028.com | www.hm2255.com | 33567v.com | www.h36.com | df8o.com | www.28758l.com | www.0270q.com | 033f.net | www.813365.com | www.560702.com | 168c7.com | www.wns55.me | yahu167.com | www.66146.net | www.969713.com | 5fll8.com | www.v2222.com | dl2883.com | www.xpj9849.com | www.flcb1.com | nn500r.com | www.60886w.com | 8159ccc.cc | www.31399bb.com | www.641577.com | 0747xx.com | www.5856856.com | 88807n.com | www.138cpm.com | rgcp.com | www.pjbet555.com | www.082wy.com | 998m.cc | www.087o.com | 333hg.com | www.9cai.com | afcp.com | www.326tk.com | www.186372.com | www.63877x.com | www.1368d.cc | 83377l.com | www.4988g.cc | 2324fff.com | www.m7764.com | 009900o.com | www.4866a90.com | mtkhgwnn.cn | www.555pj8.cc | www.595601.com | www.vns0600.com | www.2350t.com | 500000890.com | www.ra8855.com | so77777.cc | www.hg860022.com | 5350x.com | www.40288p.com | 6668449.com | www.55060t.com | feicai0991.com | www.58665t.com | 86688001.com | www.5504u.com | 4052a.com | www.448965.com | 348960.com | www.564949.com | 655661155.com | www.166347.com | qq7742.com | www.836690.com | 18787h.com | www.hg8053.com | sjlh66.com | www.ibm888.net | 3049n.com | www.599123.com | q2894.com | www.20199yy.com | 4433634.com | www.4963oo.com | 6194js.com | www.4196f.com | 74397777.com | www.126a56.com | 5003bb.com | www.0601r.com | 8036aa.com | www.2945e.com | 76886v.com | www.6776ee.com | 73567tg17.com | www.00665c.com | 3178xx.com | www.c5836.com | www.jinsha200.com | www.602465.com | www.00618p.com | www.55228i.com | www.3844zz.com | x48q.com | www.35252d.com | q4389.com | www.16065t.com | 44cc8331.com | www.896020.com | www.tyc357.com | 840pj.com | www.0849j.com | 66136a.com | www.1239999.cc | 2544b3.com | www.875957.com | www.hhgg29.com | qcloud.com | www.bet63m.com | 677070.com | www.50074d.com | www.cr508.com | www.178761.com | www.223349.com | 2019.cc | www.q98478.com | 001dyj.com | www.701545.com | www.457777.com | dh2894.com | www.07679i.com | 11jj8332.com | www.677375.com | www.482633.com | 4036y.com | www.666xx.cc | 56988o.vip | www.377507.com | www.sb270.com | 2008rr.com | www.0270g.com | www.hg5857.com | 1333m.com | www.bet63u.com | x33u.vip | www.666055.cc | www.zx5551.com | 0612g.com | www.33997p.com | www.333133u.com | 3885.com | www.5508.am | 15a39.net | bj499.com | www.4058d.com | 143.cc | www.321953.com | www.gm41.com | 67877v.com | www.629053.com | www.88100.com | 146664455.com | www.cp208.com | www.50373.com | 281555.com | www.3933y.cc | www.778123.com | 2418f.com | www.00840y.com | www.js81122.com | 30006a.com | www.60886j.com | 20058.com | 9149o.com | www.22468.com | www.38200e.com | m88.cn | www.139975.com | www.362855.com | l3405.com | www.5522e.cc | www.82205.com | 4465p.com | www.689169.com | www.dcw88.com | v5959.com | 11422n.com | www.youxi1314.com | www.0636g.com | 1331o.com | www.11201.cc | www.333777k.com | 54241188.com | www.163734.com | www.33678ww.com | www.a3a999.cc | 69111.com | www.32123k.com | www.987125.com | 2138001.com | www.325771.com | www.73990x.com | www.32126v.net | 316p.cc | www.tcsj.com | www.cp9508.com | 3178y.com | bet08880.com | www.52303s.com | www.660tk.com | 67877x.com | 8988m.com | www.688202.com | www.qq349.com | t444c.com | qq365t.com | www.35898j.com | www.yh9333.com | 3788h.com | qq365x.com | www.959595.biz | www.77438.com | 70118y.com | mgm01.net | www.77114h.com | www.988806.com | 3096.com | 444000xxx.com | www.ac9911.com | www.1112737.com | www.7337942.com | 0615020.com | www.202314.com | www.3691n.com | www.b868.com | gg2205.com | 99111pp.com | www.hm7288.com | www.4196p.com | www.77537o.com | lj553.com | 365499.bet | www.5086h.com | www.01bet8.com | www.lfg555.com | 3807oo.com | 55p1.cc | www.3890h.com | www.475333.com | www.8694g.com | 5219r.com | eme9725.com | www.108ak.com | www.8080999g.com | www.221155.com | pjhainan.com | 075tt.com | www.609716.com | www.5856867.com | www.www904744.com | 11018q.com | 78666x.com | alpk66.com | www.ya013.com | www.130013.com | www.89928.com | 5030.com | 3656mm.com | 33560006.com | www.914907.com | www.050881.com | www.5114111.com | www.6009844.com | 4488x.com | 1775aa.com | www.543122.com | www.89894r.com | www.sha0055.com | www.rycp665.com | 89777f.com | 8159u.cc | ttt4165.com | www.342577.com | hg168y.com | 2324qqq.com | 1288cc.com | www.300388.com | www.58677.cc | www.5446c.com | www.88c668.com | www.58777e.com | q2554.com | 44265555.com | 2287hh.com | xl18.org | www.865807.com | www.c387387.com | www.8080999i.com | www.2492.cc | www.xpj88004.com | 2448.com | 11005l.com | d58955.com | 214sj.com | www.202429.com | www.44czt.com | www.957004.com | www.00778x.com | www.166663.com | www.tyc600.com | www.99999jsc.com | 55331d.com | 396605.com | 883399f.com | feicai0724.com | www.377955.com | www.h679.com | www.86267q.com | www.285628.com | www.89599q.com | www.mgdc48.com | www.wnsr4439.com | www.9374o.com | 7935x.com | 98955s.com | 114167.com | 55331s.com | 5369e.com | gyhose.com | www.178281.com | www.652623.com | www.mcw6.com | www.26299m.com | www.99080088.com | www.90365vip.com | www.m32031.com | www.7415xx.com | www.998855b.com | www.218003.com | www.777789pj.com | www.4625p.com | www.hg6513.com | spbo.com | 4442546.com | 4809n.com | vv1915.com | 4018qq.com | 0332m.com | 137.vg | 6396g.com | a3665.com | 2004871.com | 5369p.com | 4997s.com | 3379tt.com | xl18.org | 9649y.com | aa33337.com | www.81678a.com | www.172346.com | www.318073.com | www.533081.com | www.652623.com | www.684050.com | www.755907.com | www.785579.com | www.974091.com | www.673290.com | www.812870.com | www.725898.com | www.608986.com | www.530255.com | www.399130.com | www.xinyc5.com | www.005845.com | ylzz1110.com | xinu10.com | 20772288.com | 2013055.com | 2381f.com | 6175h.com | 7720d.net | 26849.com | afcp10.com | 4107j.com | 4647r.com | mgm3242c.com | 9849733.com | www.jbb2015.com | www.25673b.com | www.sun00.com | www.rrrr0076.com | www.tt55666.com | www.xx3088.com | www.4963s.com | www.7366005.com | www.42070011.com | www.5657598.com | www.78949j.com | www.3416g.com | www.810517.com | www.v6964.com | www.333777k.com | www.8967e.com | www.8808598.com | www.3691p.com | www.77996c.com | www.77ckb.com | www.609719.com | www.32123e.com | 1331uu.com | 1222p.com | pj00ff.com | 88885309.com | JS191.com | www.558js.com | www.9068nn.com | www.138578.com | www.xpj1123.com | www.7714d.com | www.zch8.com | www.374877.com | aa33339.com | 58802k.com | 3846rrr.com | 3258x.com | www.6491k.com | www.70039x.com | www.bfcaip.com | www.456.tm | www.34788c.com | www.659776.com | 7779s.cc | 2613l.com | hg7088.com | www.99999jsc.com | www.836666e.com | www.27363c.com | www.js69vv.cc | www.9149n.com | www.364077.com | 861052.com | 8988222.com | 1077ll.com | www.995o.net | www.807239.com | www.07679k.com | www.12455t.com | www.355240.com | 80567n.com | 3482z.com | 22005003.com | www.hg5728.com | www.04567c.com | www.379.net | www.611026.com | feicai0718.com | 51133eee.com | 6647a.com | www.48123.hk | www.8645006.com | www.50064q.com | www.237944.com | 1116076.com | 8381oo.com | www.41414688.com | www.cp0013.com | www.7876389.com | www.763226.com | 15920000.com | www.2626sun.com | www.811811.com | www.7158.cc | www.602467.com | 1665dd.com | wns28c.com | www.20x0048.com | www.c688.com | www.4923p.com | www.530861.com | 61828.info | 28288dd.com | www.27111x.com | www.h80288.com | www.5522l.cc | jnbzsj.com | 4165a.com | www.bet3651014.com | www.938j.cc | www.hg09d.com | www.11pjjt.com | www.y8853.com | www.888hy.cc | 6446dd.com | 4018i.com | www.am0672.com | www.6668ylg.com | www.6364p.com | 518cp-1.com | qg292.com | www.5559193.com | www.1754o.com | www.937160.com | 2021j.com | 0033b.cc | www.qazjw.com | www.8d858.com | www.80075i.com | hhgz98.com | www.76543k.com | www.10999a.com | www.ldfc8.com | 32126i.net | www.bwin920.co | www.022hn.cc | 8294w.com | 3245d.com | www.dbz9.com | www.bet379.com | 23800y.com | 3685w.com | www.9988619.com | www.5951990.com | www.52303a.com | 4488j.com | www.xpj04666.com | www.win1233.com | www.99677v.com | 4955b.com | www.028448.com | www.68993273.com | 7811uu.com | 8522llll.com | www.tt55666.com | www.80767f.com | 88894h.com | 87665q.com | www.9478.com | www.c131.vip | v997e.com | www.bet544.com | www.8905l.com | www.178379.com | bodog57.com | www.37766.cc | www.53900r.com | 00778r.com | bcylc55.com | www.567678.cc | www.309388.com | 159666147.com | www.zs5555.com | www.87171.cc | hg57570.com | www.365uu6.com | www.9187m.com | pj1314520.com | 7945kk.com | www.tt55826.com | www.608587.com | 3640jj.com | www.v36.com | www.16wa.com | 22411.com | www.33a85.com | www.50052s.com | 2229tz.com | www.3459z.com | www.ejylc10.com | 3434bbb.com | www.821558.com | www.46006.com | 5456r.com | www.56733q.com | www.98vs88.com | bet28e.com | 11989k.com | www.5679527.com | 29918s.com | 51200aa.com | www.32031s.com | 1468lll.com | www.1869n.com | www.2350.vip | 3379.com | www.700y.com | www.ya2019q.com | hkmh88.com | www.www55755.com | www.12455y.com | 30175544.com | www.635444.com | www.960923.com | 0638fff.net | www.249559.com | www.508277.com | 6766gg.com | www.bet63o.com | 9002r.com | www.hg08678.com | www.5953688.com | 44qq8332.com | www.hg0599.com | www.3478y.cc | xhtd12345.com | www.557116.com | www.186753.com | jixiang16.com | www.984706.com | 0727com.com | www.18777s.com | www.934277.com | 424138.com | www.4521j.com | 426601.com | www.my1069.net | www.097wy.com | 3650329.com | www.1hg6668.com | 22555156.com | www.77537r.com | www.022am.cc | yulecheng888.com | www.5183889.com | 0080g.com | www.57hg.com | www.925507.com | mgm3242l.com | www.70669b.com | 26444r.com | www.37337.com | www.375963.com | 00064066.com | www.105607.com | 0332s.com | www.609024.com | 8015p.com | www.7025a.com | www.hm6655.com | 33115y.com | www.99094e.com | 59889d.com | www.a948a.com | hg77760.com | www.9679700.com | www.976931.com | 2247ee.com | www.954321l.com | fff5701.com | www.05bet8.com | 500000471.com | www.hg7942.com | www.193522.com | www.as0001.com | www.fh3993.com |