effect of impact energy on the corrosion wear of high manganese steel

ann prediction model for impact energy of hot rolled plate

热轧中厚板冲击功的神经网络预报模型

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a method for determining the toughness of wc-co alloys with impact energy

以冲击功测定硬质合金韧性

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research on large impact energy hydro-hammer and its application

大冲击功液动锤的研究及其应用

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the results show that, the strength and charpy impact energy of the steel firstly increases then decreases as the silicon content increases and the strength and charpy impact energy is maximum at some silicon content.

结果表明，Si-Mn-Mo系低碳贝氏体钢的强度和夏氏冲击功均随硅含量的增加呈先升高后降低的规律变化，在某一硅含量下两者同时达到最大。

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to investigate the reason of the great difference in impact toughness of welding seam of high frequency welding pipe, samples taken from base metal, heat affected zone and welding seam were analyzed through microscopy.

为查明J55钢高频焊管焊缝处的冲击功差异较大的原因，对母材、焊接热影响区及焊接区进行了微观分析。

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the synergistic effect increased with the increasing of impact energy as to the high manganese steel, which accounted for 12.08%, 19.50%, 23.11% and 26.70% respectively.

高锰钢腐蚀磨损交互作用随着冲击功的增大而增大，冲击功为1J、2J、3J、4J时的交互作用在总腐蚀磨损中所占比例分别为12.08%、19.50%、23.11%和26.70%。

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the drill pipe failure assessment demonstrates the longitudinal brittle fracture will be avoided when the transverse impact power of the material is over 80j.

应用钻杆失效评估技术研究表明，横向材料冲击功大于80J将避免钻杆内螺纹接头纵向脆性开裂失效。

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the strong instability of-40 ℃ longitudinal impact strength of e42 shipbuilding steel observed in trial production was studied by using different processes.

采用不同的生产工艺制度，对E42船板钢在工业试制生产中所产生的-40℃纵向冲击功波动较大的现象进行了研究。

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for these results of mentioned above two methods, the experimental data fitted by the regression technique shows that there is a good corresponding relationship between shear strength and charpy impact value.

对上述两种方法的试验结果经过回归处理，表明剪切强度与Charpy冲击功之间有较好的对应关系。

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after esr the 77 k impact work is up to 300 j, the fracture mode is of mixed microvoid coalescence and quasi cleavage.

经电渣重熔后，韧脆转变现象消失，77K的冲击功高达300J，断口以韧窝为主并有少量准解理小刻面。

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it is turned out the content of elements c, mn and s affects the lateral impact energy.

结果表明，影响横向冲击功的是C、Mn、S三元素的含量。

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a correlation between transition temperatures of absorbed energy and fracture toughness, cod

冲击功与COD转变温度的相关关系

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impact energy gets to the maximum of 72.768 j at 20 ℃.

20℃时的冲击功高达72.768J。

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the final parts sintered by two steps sintering in reducing atmospheres were then infiltrated with copper. the tensile strength of the material reached 480 mpa, elongation ratio 13% and impact energy 140 j.

对还原气氛二步烧结件进行渗铜处理，渗铜件抗拉强度为480MPa，延伸率为13%，冲击功为140J。

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the material pushing unit comprises a driving unit, a store holder and a base plate;

推料单元包括驱动单元、储料器和底板；

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this paper is a description of the technical development, flow, function and key control of modern cable drilling and its profit in ziliujing salt site.

本文论述了近代冲击式（顿钻）凿井技术的发展、工艺流程、功能、关键技术操控等，以及在自流井盐场运用所取得的综合效益。

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optimal design of valveless hydraulic impact-rotary driving head of roofbolter based on genetic algorithm

基于遗传算法的无阀液压冲击旋转型锚杆钻机动力头优化设计

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ultimate penetration depth of projectiles based on shock wave theory

基于冲击波理论的钻地武器极限侵深近似分析

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the force reaches largest in the first force wave when drill the upper copper foil. it decreases in glass fiber/ resin. the intertwined fibers cause great changes of drilling torques.

钻削上表层铜箔时由于叠加冲击力，钻削轴向力达到最大；钻削玻纤与树脂的轴向力较小，纤维互相交错存在导致钻削扭矩变化比较大。

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the target of drilling bits is deduced for high-gas coalbed, the influence of gas and damage of coal mass is considered in this paper.

考虑瓦斯的影响和煤体损伤特性，经理论推导得到了含瓦斯煤层检测冲击地压的钻屑量指标，并结合阜新五龙矿的实际情况进行了验证。

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