氫裂紋 的英文怎麼說
中文拼音 [qīnglièwén]
氫裂紋
英文
hydrogen crack-
: 36 < kth < 37 mpa / m3 / 2, 42 < kih < 44mpa / m3 / 2, 51 < kc < 52 mpa / m3 / 2 through the sem fractography, it is know that the susceptibility to brittle failure at room temperature is more than below 100 ?. and the susceptibility to brittle failure increase with hydrogen increasing, under the sustained loading, ductile cracking appears. the quantity of brittle cracking is more with crack growth
T44mpa m 『 q ， sl lt52mpa in 』 」斷口分析表明，該合金充氫后其室溫時的氫脆敏感性大於100oc時的氫脆敏感性；且隨氫含量升高，氫脆敏感性增加：在恆載荷的作用下，該合金裂二紋開始擴展時顯示的是韌性起裂；隨裂紋增長，試樣脆性斷裂的比例增大。This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and
本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。Series of high pressure thermocouples thermalresistances and thermowells, the thermocouple take the form of spring - loaded, of which protective tube and flange are forged of special alloy, as well the thermowell are formed with bar stock drilled. more further, theconnecting between thermowell and flange can be compressed with tapered thread and the groove at the lower end of flange can be welded with argon arc. these thermocouples are usually used in high equipments of hydrogen cracking device, cracker and vaporizer etc for pressure - resistant in over 30 mpa, operating temperature from 0 up to 800
系列高壓熱電偶阻及套管，熱電偶採用彈簧壓著式，保護套管和法蘭選用特殊合金材料鍛造，套管採用棒料整體鉆孔加工而成，與法蘭連接處以錐管螺紋配合併與法蘭下端渠槽處用氬弧焊接，耐壓30mpa ，使用溫度0800 ，可長期使用在加氫裂化裝置裂解裝置，氣化爐等高壓設備中。The study of surface cracks ream on overlay of hydrogenation reactor
熱壁加氫反應器堆焊層表面裂紋擴展初析In the light of hydrogen manufacturing coverted furnace tube system ( including conversion tube, gas gathering tube and pigtail tube ) occuring weld fissure during manufacture and installation, the reason of fissure is analized. the repair plan and specific repair measures are recommended
針對制氫轉化爐管系（包括轉化管、集氣管、豬尾管）在製造安裝過程中出現焊接裂紋的原因進行了分析，並介紹了缺陷的修復方案和具體修復措施。At room temperature, the fracture for r specimen is the characteristic of fatigue stripe, while tire - like pattern appears on the fracture of the t specimen, and the hydrided sample is characterized by skeleton - like pattern and quasi - cleavage fracture at room temperature. however, the fracture characterized by second - crack at 400
常溫下， r向試樣的低應變幅疲勞斷口上較為明顯的特徵是疲勞條紋的存在; t向試樣的疲勞裂紋擴展區斷口上則為輪胎痕花樣;滲氫態試樣室溫下疲勞斷口的主要特徵為脊骨狀花樣和準解理斷裂特徵。The crack model of ti - 2al - 2. 5zr is proposed as follows : ( a ) hydrogen diffuse to the crack tip under applied stress ; ( b ) precipitation of hydride ; ( c ) crack propagation by hydride and precipitation through autocatalytic process ; ( d ) repeat the former steps ; ( e ) final fracture
該合金氫致延遲斷裂的機理為： h ）氫在應力作用下向裂紋尖端擴散； （ b ）在裂紋尖端形成氫化物並長大： k ）主裂紋沿氫化物擴展； m重復h人比、 （ c ） ； k ）最後斷裂。分享友人