quenching stress 中文意思是什麼
quenching stress
解釋
淬火應力-
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。 -
Product description : this series product has entire auto - lubrication systems and the ordinary two big kinds supplies to select, this machine major parts cancels the needle, cam and the ball bearing all uses the high quality import components, also selects the high quality steel products quenching heat treatment to the main stress components, the essential components uses special phosphorus processing, the foreign dew components all adopts special - purpose seal - up device and drains the oil the measure, therefore, entire causes machine throughout to locate the lubrication is reliable, the revolution is steady, under the high speed low chirp condition works
本系列產品具有全自動潤滑型及普通型兩大類以供選用，本機主要零件勾針，凸輪及滾珠均採用優質進口零件，對主要受力零件亦選用優質鋼材淬火熱處理，關鍵零件則採用專門磷化處理，對外露零件均採取專用密封裝置及排油措施，因此，使整機始終處于潤滑可靠，運轉平穩，高速低噪的條件下工作。 -
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。 -
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。 -
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 -
Fourth, the fv / fo, fv / fm, yield and photochemical quenching coefficient ( qp ) decreased whereas non - photochemical quenching coefficient ( qn ) increased under cold stress
（ 4 ）在低溫環境中，光系統（ ps ）及其電子傳遞過程受到明顯抑制。
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