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課程設計-材料成型冷軋板帶鋼生產工藝流程-文庫吧資料

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【正文】 f Fifa39。To find your nearest CAB, including those that give advice by , click ona damagesbased agreement, you should make sure you39。t charge you more than 35% of your pensation Further help.If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as aagainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal.Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed undert your employer dismisses you and you think that you have been dismissed unfairly.For more information about dismissal and unfair dismissal, see you don39。要善于發(fā)現(xiàn)問題,并善于查閱資料,勤于思考,團結合作,最終解決問題。 在課程設計過程中,我通過查閱很多書本和網上資料,并經常與同學探討所遇到的問題,把課堂上所學到的理論知識與實際的設計工作相結合,使得這些知識得到了鞏固加深,而且提高了我的自學能力和團隊協(xié)作能力。因此其它各機架電機功率也均滿足要求。校核如下: 已知,所以:而,得到: 由于,因此,第一架軋機可以實現(xiàn)帶鋼順利咬入。 式中: ——工作輥直徑; ——軋件的壓下量; ——咬入角; ——摩擦角。 根據以上結果,軋輥各部分均滿足強度要求。工作輥與支撐輥表面接觸產生接觸應力,它將影響軋輥的軋制壽命,應加以校核。(1)工作輥輥身強度校核 圖42 工作輥彎矩圖工作輥輥身中心處承受的垂直彎矩為 (2)工作輥輥頭強度校核 利用前滑值計算軋輥的轉速 D A 圖43 工作輥輥頭圖因此,工作輥輥頭強度滿足要求。m 圖41 支撐輥彎矩圖 (1) 輥身中央處承受最大彎矩: 輥身中央處產生的最大彎曲應力 <=240MPa 因此,支承輥的輥身強度滿足要求。 表41 軋輥材質及許用應力值材質 許用應力/MPa許用接觸應力/MPa許用剪切應力/MPa許用接觸剪應力/MPa合金鍛鋼240240073730 軋輥各部分尺寸分別為:工作輥:輥身直徑=600mm,輥身長度=1700mm;工作輥輥頸直徑: ;工作輥輥頸長度:;工作輥壓下螺絲間的中心距: mm;支撐輥:輥身直徑=1500mm,輥身長度=1700mm ;支撐輥輥頸直徑:;支撐輥輥頸長度:;支撐輥壓下螺絲間的中心距:=2443mm。 表33 各道次計算結果道次/%/%/%/MPa/MPa/MPa/mm/mm1018360356218332748085467333484259559144857536656675576059690757196道次 /mm/MPa/KN14068981255412720372817224483015455512504 根據經驗值,軋件由末架軋機軋制完成后的出口速度一般為19~25,選取末架軋機軋件的出口速度為20,根據秒流量體積條件:求出軋件在各架軋機的出口速度。(3)求平均單位壓力及總壓力將的值和的值代入即可算出平均單位壓力。 式中: ——泊
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