<object id="chinn"></object>

<th id="chinn"></th>
<nav id="chinn"><video id="chinn"><span id="chinn"></span></video></nav>

    1. <th id="chinn"><video id="chinn"><span id="chinn"></span></video></th>
      品牌升級,查看新版
      4000-058-056
      品牌全面升級,論文檢測進入“PaperRight”時代!

      中、外文摘要及關鍵詞的書寫格式


      2017年06月08日 | 作者: paperrater | 分類: 行業動態 | 來源:PaperRater論文檢測系統

      摘?? 要

      (格式:小三號黑體、20磅行距、段前后30磅、居中)

      長大隧道越來越多地選用全斷面隧道掘進機(TBM)施工技術,其中刀具是關鍵制約技術之一。本課題以秦嶺隧道工程為背景,借鑒WIRTH公司先進刀具技術,研究設計了硬巖掘進機刀具。

      首先,對刀具關鍵技術問題進行了分析研究,在此基礎上提出了設計方案,然后進行了刀軸、軸承、聯接螺栓等關鍵零部件的設計計算分析,應用計算機輔助設計技術完成了掘進機刀具全套設計圖紙。設計中選用4Cr5MoSiV1作為刀圈材料,擬定了刀圈的熱處理工藝,使所設計刀圈具有高強度以及良好的耐磨性和紅硬性;……

      (格式:小四號宋體,20磅行距,兩邊對齊)

      關鍵詞(小四號黑體,左對齊):全斷面隧道掘進機;刀具;熱處理工藝(小四號宋體)

      Abstract

      (格式:小三號Times New Roman,20磅行距、居中)

      Full face tunnel boring machine (TBM) is increasingly applied to the tunnel construction. One of the key restricting technologies lies in TBM cutters. In this design project TBM cutter for hard rock conditions is studied and designed in accordance with QINLING tunnel using WIRTH cutters for reference.

      Firstly, the analyses and studies on the key technologies of the cutter are performed. Then ,based on this the design scheme of the cutter is proposed, some calculations are carried out for the important cutter parts such as cutter shaft, cutter bearings, bolts etc., a complete set of cutter design drawings is accomplished by means of computer aided design. In this design, 4Cr5MoV1 is used as the material of cutter ring, its heat treatment process is drawn up to make the cutter ring has a performance of better wear resistance, strength and hardness in higher temperature;…….

      (格式:小四號Times New Roman,20磅行距,兩邊對齊)

      Key words(小四號Times New Roman,加粗,左對齊): TBM;? cutter;heat treatment process (小四號Times New Roman)

      caoporn超碰97免费人妻