3 , change the sub - form into a type of origin benefit type , the department is hollow and can heat or cool off , turning a heap to bear to whet hard quality metal alloy in the , the work surface plates hard chrome , bearing corrosion to bear to whet function like 3转子形式为类本伯利型，棱部中空可加热或冷却，转于棱峰堆焊耐磨硬质合金，工作表面镀硬铬，耐腐蚀耐磨性能好。
1 the rolls are made of chilled alloyed cast iron , their working surfaces are of high hardness and wear - resistant . the working temperature of the bored rolls is controllable by steam or cooling water that pass through them thus , to meet the requirements of milling process 1辊筒用合金冷硬铸铁制成工作表面具有较高的硬度，耐磨耐用。辊筒内腔可通如蒸汽或冷却水以便调节辊筒的工作温度，以满足炼胶工艺的要求。
3 . the diamond segment wear process was analyzed by testing the weight of segment before and after sawing . the patterns of wear and breakage of diamond grits and bond wear mechanism of the blade were analyzed based on the observation on the working surface of the saw blade by stereo microscope and scanning electronic microscope 采用称重法测量锯切过程锯片节块磨损量，并通过计算磨削比，分析了混凝土锯切过程金刚石节块的磨损特性及其影响因素，并采用sem和体视显微镜观察节块不同部位工作表面和金刚石的磨损破坏情况，研究了金刚石磨损破坏的主要形式和胎体材料的磨损形态。
According to heat load source of die cavity , temperature distribution gradient equations and heat flux equations and the peak value equations of temperature load at die cavity surface have been obtained with research of temperature distribution and transfer laws of die surface by unsteady heat transfer theory 摘要根据锻模型腔热负荷来源，通过非稳态传热理论，分析研究了模具工作表面层的温度分布与传递规律，给出了型腔表面温度分布梯度和热流密度公式，并给出了锻模型腔表面的温度负荷峰值的计算公式。
