淬火應力 的英文怎麼說
中文拼音 [cuìhuǒyīnglì]
淬火應力
英文
hardening stress-
Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation
為解釋微合金化50crv鋼強韌化機理，本文通過對不同淬火溫度，回火溫度，回火時間下的力學性能指標的對比及顯微分析，認為微合金元素的細化晶粒，馬氏體的回火分解，殘余奧氏體的轉變，第二相的沉澱析出共同決定了微合金鋼的強韌化情況，特別是由於微合金元素的存在，其細化晶粒及其碳氮化物的沉澱析出，導致鋼的良好的強韌性，並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應，會在硬度曲線中產生明顯的二次硬化現象。Smooth tempered glass is manufactured by heating up float glass to swiftly and uniformly, with this special heat treatment and quenching process which increases glass strength up to four to five times vs, annealed glass, in case stresses beyond its capacity, smooth tempered glass simply disintegrates into innumerable small pieces, significantly reducing the risk of serious injury
鋼化玻璃是將浮法玻璃經過物理性淬火處理，使其表面形成均勻的壓應力，而內部則形成張應力，從而有效的提高了玻璃的抗彎和抗沖擊性能，強度達到了普通玻璃的3 - 4倍，當其破碎時則分裂成均勻純角不易傷人的小顆粒，使其成為一種現代生活中理想的安全玻璃。Abstract : by means of metallographical examination and sem, the microstructure characteristics, macro - and microfractographs of the brittle broken wheel hull bolt of bj212 automobile have been studied. the results show that the thin - headed screw, with excessively deep carbonitriding layer and hardening layer, has less resistance to brittle fracture in the thin area of its head. at the root of the head connecting the stem, a tensile stress may emerge owing to the non - even quenching stress. those are the two reasons for low torque fracture of bolt
文摘:藉助金相、掃描電鏡等手段對低扭矩脆斷的bj212汽車輪殼螺栓的金相組織特徵，宏觀和微觀斷口形貌等進行了研究，結果表明：這種頭部薄的螺栓，滲層和淬透層過深，使頭部薄區脆斷抗力降低，在頭部與桿的根部，由於淬火應力不均勻導致根部產生拉應力，均是導致螺栓低扭矩斷裂的原因。The inner stress produced by quick cooling during quenching is the basic reason of formation of quench - distortion of parts
摘要淬火過程中的快速冷卻在工件內部產生的內應力是導致淬火變形的根本原因。Moreover, a method for iterating thermal and magnetic analysis is put forward. in chapter 5, the distributed characteristics of eddy and temperature fields in induction heating process are simulation by fem respectively, including the distributions of eddy and temperature fields during the whole induction heating process, the influence of frequency and magnetic disperse, and the prediction of hardened depth
第五章:用ansys軟體對感應加熱過程中工件內渦流場、溫度場的一些基本問題進行模擬及分析，主要包括:加熱過程中工件渦流功率密度及溫度分佈規律;頻率與磁力線逸散對加熱效果的影響;同時對感應淬火淬硬層深度進行了模擬預測。Standard test method for non - destructive photoelastic measurement of edge and surface stresses in annealed, heat - strengthened, and fully tempered flat glass
在退火淬火和全回火平面玻璃中邊緣和表面應力的無損光彈性測量的標準試驗方法Analysis on microstructure and stress of broad - beam laser hardened gears
齒輪寬帶激光淬火組織和應力分析Therefore, it is of interest to investigate residual stresses in aircraft aluminum parts
因此，研究航空鋁合金構件中的淬火殘余應力就顯得非常重要。Second, on the numerical arithmetic of the quench - induced residual stresses ground, the quenching process of 7075t73 aluminum plate is simulated, the effect of material characteristics along with the plate temperature varying in quenching is considered, and on conditions of the different water temperature and different plate thickness, the quenching processes are compared
2 、建立了航空鋁合金板材淬火過程的彈塑性力學模型，對航空鋁合金板材溫度場與應力場進行了數值模擬，模擬過程考慮了材料特性隨溫度變化的影響，並對不同的淬火影響因素進行了分析。First, the research background of this dissertation is set forth, and summarized with the overview of the history and the current development of residual stress research, based on reading a lot of literatures, and summarized with the general situations of aircraft aluminum alloys quenching and numerical simulation, those are pointed out objective, significance, methods of this research
本文主要採用數值模擬、理論分析、實驗驗證等方法，對航空構件淬火殘余應力的產生及影響進行了研究。主要工作集中在以下幾個方面： 1 、闡述了本學位論文的選題背景，在查閱國內外研究文獻的基礎上，歸納總結了航空鋁合金淬火殘余應力的研究概況，給出了論文的主要研究目標、內容及方法。Machining deformation of aircraft monolithic component is simulated by finite element method ( fem ) and validated by experiment. the initial residual stress in pre - stretched plate is generated by simulating quenching and stretching processes. with a single tool - tooth milling process fem, the machining loads in monolithic component material removing is obtained. restart - calculation is put forward to complete the whole simulation of machining process. to verify the fem result, an experiment is carried out. the deformation distribution of the monolithic component resulting from fem shows a good agreement with the experiment result, which indicates that the key technologies presented in the paper are practicable and can be used to simulate the milling process of monolithic component to predict its deformation. lengthy and expensive trial and error experiment process can be avoided
在模擬淬火、拉伸過程獲得含有初始殘余應力的預拉伸板材以及模擬單齒切削過程獲得切削載荷的基礎上，提出並採用接力演算法，對一航空整體結構件的材料銑削過程進行有限元模擬，同時進行了試驗研究.結果表明，有限元模擬的整體結構件的變形與試驗具有一致性，從而證明提出的整體結構件加工模擬關鍵技術的可行性，避免了為研究加工變形而進行的繁瑣的試錯法Fourth, according to the actual aircraft frame part, the scale component is machined, and the quenching process of the scale component is simulated, which obtain temperature field and residual stress field in the frame scale component
4 、建立了某軍用飛機隔框零件比例件三維淬火過程有限元模型，模擬得到其三維瞬態溫度場與應力場。Steel for the prestressing of concrete - part 3 : quenched and tempered wire
混凝土預應力鋼筋.第3部分:淬火和回火鋼絲These precipitation - hardened aluminum alloys gain their high strengths through heat treatment involving a severe quenching operation, which introduces a very high level of residual stresses
這些鋁合金為獲得高強度，必須進行固溶與時效處理，其中在淬火過程中會產生很大的殘余應力。Due to the rapid heating rate, the time for wire stayed in high temperature zone is very short and no enough time for grain grows largely, hence the structure size of continuously induction heated wire is smaller than that of conventional heated wire and grain size is 2 to 4 level higher. due to the fine grain size, the induction heat oil tempered spring wire can acquire more reasonable comprehensive mechanical properties under same strength
可見，由於加熱快，在高溫停留時間短，組織晶粒來不及長大，因此，連續感應加熱鋼絲的組織晶粒尺寸比一般加熱小，晶粒度高2 - 4級。由於組織晶粒尺寸細小，因此，感應加熱油淬火-回火鋼絲，在同樣強度下，具有更高的綜合b力學性能。Induction heat oil tempered wire and rod can be directly used in the manufacture of spring and pusher and the quenching - tempering process thereafter can be omitted, thus the quality problems such as deformation of workpiece, decarburization, un - stability and un - qualification of mechanical property can be avoided and the quality stability and reliability of product can be improved
感應加熱油淬火-回火鋼絲及線材，能直接用於繞簧和製造推桿，可省去一般材料繞簧和推桿加工成形后的淬火-回火工序，避免了由此帶來的工件變形脫碳及力學性能不穩定甚至不合要求等質量問題，提高了產品的質量穩定性和可靠性。Analysis of quenching residual stress of seamless pipe by fem
用有限元方法分析無縫鋼管的淬火殘余應力Residual stress release in quenched 40cr steel under electropulsing
鋼淬火殘余應力的消除Determination of steel stresses in unloaded reinforced components made of autoclaved aerated concrete ; german version en 1738 : 1998
蒸氣淬火氣孔混凝土製非承重加強部件鋼應力測定分享友人