The relationship between annealing cracks and heating temperatures of Ni-based alloy cold-formed billets and the causes of annealing crack occurrence are studied.
研究了镍基合金冷变形管坯退火裂纹与加热温度的关系和退火裂纹产生的原因。
Analyzing the reasons of semi-steel cold ingots crack occurred in heating and theoretically calculating heating speeds of semi-steel cold ingots, a practical curve of heating process is worked out.
通过分析半钢冷锭加热裂纹产生原因，以及对半钢冷锭加热速度进行理论计算，制订了切实可行的加热工艺曲线。
It is pointed out that the source of crack is formed during the fast heating process and expanded following the fast cooling process.
即裂纹源产生于快速加热过程并在随后的快速冷却中得以扩展。
In this paper, a theoretical analysis and experiment surveys are presented for simulating crack prevention by bridging over near crack tip under electromagnetic heating effect.
采用理论分析和实验研究的方法讨论了应用电磁热效应对金属构件中裂纹实施局部跨越止裂的技术。
The siliceous tuckstone often crack for several reasons while heating up , which is a hidden trouble for safely running of furnace .
由于种种原因，硅质挂钩砖在烤窑过程中经常出现炸裂，给窑炉的安全使用留下重大隐患。
Currently the asphalt concrete pavement pit slots and crack are patched by heating asphalt mixtures mostly and needs higher temperature.
目前对沥青混凝土路面坑槽、裂缝等病害的修补多采用热拌沥青混合料的形式，温度要求较高。
The techniques for repair are studied after crack arrest in metal dies using electromagnetic heating, such as electrical spark melt joining, reinforced build-up welding and brush electroplating.
研究了各种实际金属模具中裂纹电磁热止裂后的修复技术，如电火花放电熔焊搭桥、强化堆焊、刷镀等；
The cold-bended crack in the hot rolled plate Q345 can be eliminated by adoption of heating-cold bending process as well as improvement of the cleanliness of the steel.
采用加热-冷弯工艺和提高钢纯洁度可避免Q 345热轧钢板冷弯裂纹的产生。
The result showed that the crack forming was due to the billet metal in the subcutaneous blow holes were oxidated during heating process and could not be sticked.
结果表明：轮箍裂纹是由于钢锭中存在严重的皮下气泡，在轮箍热加工过程中皮下气泡处金属被氧化烧穿导致不能粘合而形成裂纹。
The result shows that the heating element of protect high temperature burning procedure could heat bend. No crack on the surface was found and pore was evidence spheroid.
结果表明，保护性高温烧结工艺的发热体可进行热态弯曲成形，表面没有发现裂纹，试样中的气孔已明显球化。
A study of crack prevention under tensile load is performed on an aluminum alloy 2a12 specimen with an oblique spatial crack by using electromagnetic heating online.
选择带有空间斜裂纹的2a12铝合金试件进行了拉伸载荷作用下电磁热在线止裂研究。
The crack arresting is accomplished using electromagnetic heating by a pulse current discharge through the inside and outside of the die.
如何产生高强度脉冲电流是应用电磁热效应遏制金属裂纹扩展的一个关键问题。
On the base of developing road crack-seal machine with a company, the author study heating system of road crack-seal machine.
本文基于某型号的道路灌缝机的研发，对道路灌缝机加热系统的传热进行了研究。
The main work can be outlined as follow:(1) The complex function method is used as a basis for the theoretical model of the space crack prevention in metal dies using electromagnetic heating.
采用复变函数方法，建立了金属模具电磁热效应空间裂纹止裂的理论分析模型。
The main work can be outlined as follow:(1) The complex function method is used as a basis for the theoretical model of the space crack prevention in metal dies using electromagnetic heating.
采用复变函数方法，建立了金属模具电磁热效应空间裂纹止裂的理论分析模型。
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