排序方式: 共有44条查询结果,搜索用时 15 毫秒
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采用电气机转换技术设计制造了W90型钢丝圈缠绕机。该缠绕机结构简单、动作精确、布局合理、操作方便、维修容易。经实用证明,该机生产能力强、控制先进可靠,是一成功设计。 相似文献
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探讨了确定轮胎全部材料热生成率的简化条件。在应变于一个周期内按正弦波形变化、材料的粘弹性按线性处理、橡胶的生热性能按各向同性处理、忽略橡胶-骨架增强材料垂直于帘线方向应变分量的作用等简化条件下,测定了165R15轿车子午线轮胎所用各种材料在不同使用条件下的热生成率,为轮胎温度场的计算提供了材料生热特性。 相似文献
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对俄罗斯BK-1675N部分和全部替代JSR268或PB301应用于IIR内胎配方中进行了小料,大料和试产试验。结果表明,俄罗斯BK-1675N再生胶、EPDM并用,通过使用均相剂M和T解决胶相分散问题,同时设法提高混混炼胶的强度,解决内胎接头性能差,易折薄,压伤等问题。 相似文献
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Curved welds were designed and the effects of the weld curvature radius and tool rotation direction on the microstructure of friction stir welded cast aluminum alloy joints were investigated. Results show that both the weld curvature radius and tool rotation direction have a significant influence on the microstructure of the curved joints during FSW. With decreasing weld curvature radius, the size of the tunnel defect is reduces and the proportion of fine Si particles in the stir zone increases. Si particles are finer and denser in the retreating side (RS) than that in the advancing side (AS) when both the welding direction and tool rotation direction are anticlockwise. However, when the welding direction is anticlockwise while the tool rotates clockwise, the proportions of fine Si particles decrease compared to the former situation. Furthermore, the tunnel defect is more likely to be present in the AS in the former situation. 相似文献
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采用丁烯-1与己烯-1共聚物(PBH)热塑性弹性体对聚丙烯(PP)进行共混改性,研究了PP共混物的力学性能和热性能。结果表明:随着PBH含量的增加,共混物的冲击强度、断裂伸长率和熔融指数都有增大的趋势,而拉伸强度、弯曲强度、硬度和耐热温度均有一定的下降。 相似文献
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轮胎企业的用电消耗按费用计算大约占了60%以上的成本比重,解决或降低电力消耗中的线路损耗、变压器损耗、无功损耗、电源品质损耗、电机低效损耗、照明低效损耗,合理利用太阳能等,可以为企业带来可观的节电、减人、提质效益。 相似文献
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