本文關(guān)鍵詞： 鋼絲繩 金相實驗 檢測實驗 斷絲 信號分析　出處：《江西理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：由于鋼絲繩具有強度高、彈性好、自重輕及撓性好等優(yōu)點,被廣泛的應(yīng)用于煤炭、冶金、石油、建筑、機械制造、交通運輸、林業(yè),港口等行業(yè)。一直以來,因鋼絲繩斷絲而引發(fā)的事故頻頻發(fā)生,究其原因是現(xiàn)階段市場上尚缺乏有力可靠的檢測手段,人們無法掌握鋼絲繩的損傷程度與檢測信號之間的確切關(guān)系,因而無法確定在役鋼絲繩的損傷與剩余強度的定量關(guān)系。因此,采用可靠的檢測設(shè)備對鋼絲繩的損傷程度進行檢測,有效地提取檢測信號,深入分析檢測信號特征,為定量確定鋼絲繩損傷與剩余強度的關(guān)系提供可靠的依據(jù)已經(jīng)顯得尤為重要。本文利用光譜儀和金相顯微鏡對72A、82B、304、316鋼絲進行了光譜實驗和金相實驗,得到了它們的化學成分,觀察了金相組織形貌、晶粒種類等。分析了這四種鋼絲的化學成分、金相組織與其強度、塑性、韌性等性能的關(guān)系,并對四種鋼絲性能的優(yōu)缺點進行了比較,得到結(jié)論:72A和82B鋼絲在強度和組織性能上較304和316更適合作為制作鋼絲繩的材料。依據(jù)漏磁原理,利用從波蘭進口的MD120B鋼絲繩探傷儀器進行模擬實驗,對72A鋼絲繩不同的斷絲損傷進行檢測。提取檢測信號,分析檢測信號的波峰、波寬與不同斷絲數(shù)目、不同斷絲間距、不同鋼絲直徑等斷絲損傷參數(shù)之間的關(guān)系。通過對檢測信號的數(shù)據(jù)整理和分析,得到了檢測信號波峰、波寬與斷絲數(shù)目、斷絲間距、鋼絲直徑等鋼絲繩斷絲損傷參數(shù)之間的關(guān)系曲線。鋼絲繩檢測要從多方位對鋼絲繩進行全面損傷檢測,本文主要研究了鋼絲繩的斷絲損傷檢測信號與其斷絲損傷參數(shù)之間的關(guān)系,為實現(xiàn)鋼絲繩在役檢測提供數(shù)據(jù)支撐,同時為定量判斷鋼絲繩損傷與剩余強度的關(guān)系提供參考依據(jù)。
[Abstract]:Because of its advantages of high strength, good elasticity, light weight and good flexibility, steel wire rope has been widely used in coal, metallurgy, petroleum, construction, machinery manufacturing, transportation, forestry, port and other industries. Accidents caused by wire rope breaking occur frequently. The reason is that there is still a lack of strong and reliable detection means in the market at present. People can not grasp the exact relationship between the damage degree of wire rope and the detection signal. Therefore, it is impossible to determine the quantitative relationship between the damage and the residual strength of the wire rope in service. Therefore, the damage degree of the wire rope is detected by reliable testing equipment, and the detection signal is extracted effectively, and the characteristics of the detection signal are deeply analyzed. It is very important to provide reliable basis for quantitative determination of the relationship between the damage of wire rope and the residual strength. In this paper, spectroscopic and metallographic experiments have been carried out on 72A1-82BC304316steel wire, and their chemical compositions have been obtained. The morphology and grain types of metallographic structure were observed. The chemical composition of the four steel wires and the relationship between the metallographic structure and their strength, plasticity, toughness, etc., were analyzed, and the advantages and disadvantages of the four kinds of steel wire properties were compared. It is concluded that: 72A and 82B steel wires are more suitable for making wire rope than 304 and 316 steel wires in strength, structure and properties. According to magnetic flux leakage principle, the MD120B wire rope inspection instrument imported from Poland is used to carry out simulation experiment. The different broken wire damage of 72A wire rope was detected. The detection signal was extracted, and the wave peak, wave width and number of broken wires, and the distance between broken wires were analyzed. The relationship between the damage parameters of wire breakage with different wire diameters. The wave peak, wave width, the number of broken wire and the distance between broken wires are obtained through the data processing and analysis of the detection signal. The relationship curve between the damage parameters of wire rope such as wire diameter and so on. This paper mainly studies the relationship between the damage detection signal of wire rope and its broken wire damage parameters, which provides data support for the in-service detection of wire rope, and provides a reference basis for quantitatively judging the relationship between the damage of wire rope and the residual strength.
【學位授予單位】：江西理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD532

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