坯块 meaning in English
briquet
compact
Examples
- Steel skeleton compact
钢骨架坯块 - Metallic powders ; determination of green strength by transverse rupture of rectangular compacts ; identical with iso 3995 : 1985
金属粉末.用矩形粉末压制坯块的横向断裂测定压坯强度 - Pdm is utilized to forecast the non - crystal phenomena in the sintering process and study the effect of non - crystal on the process of sintering
因此采用超化学计量uo _ ( 2 + x )坯块是实现低温烧结的必要条件。 - Microstructure of the composite layer was analyzed with help of optical microscope , scanning electronic microscope ( sem ) , electronic probe microanalysis ( epma ) and x - ray diffraction ( xrd ) . the compacting of the billet and the forming mechanism of the carbide reinforcement were studied based on thermodynamics and kinetics of reaction , sintering theory and the result of dta . at the same time , the wear - resistance of the composite layer was studied under condition of dry sliding friction
利用光学显微镜、扫描电子显微镜、电子探针以及x -射线衍射仪，分析了表面复合层的基体组织结构；运用反应热力学、动力学、粉末烧结理论和燃烧合成理论，结合差热分析结果，探讨了表面复合层压坯的烧结致密化原理和碳化物增强相的形成机理；利用坯块在真空烧结炉不同温度下的烧结出来的显微组织分析，模拟出坯块的烧结过程中的化学反应过程。 - The speed became fast at the temperature 1050 . the reaction could carry completely when billets was kept in vacuum tube for 3 hours " at 1050 temperature , under the striking of great quantity of heat when the molten iron poured into the mold , the reaction was blazed rapidly and continued at a high speed . the diffusible speed of v and c was very fast because the billet was heated over 1300 in a moment , so the reaction ca n complete in a few minutes
( 5 )碳化反应v + c vc在900左右开始发生，此时是固相反应，反应速度较慢，反应不能进行完全，随温度升高，该碳化反应的速度加快，在1050保温3小时可以进行完全，在铸造烧结时在过热铁水的巨大热流密度冲击下， v + c vc立即被激发，并以很快的速度进行，由于坯块被加热到1300以上，此时c和v扩散速度很快，因此铸造浇注后的几四川大学硕士学位论文分钟内反应可以进行完全。