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弹簧件常温复合发蓝工艺研究 总被引:2,自引:0,他引:2
传统的常温发蓝工艺存在着附着力和耐磨性差的缺点,研究了一种用于弹簧件的常温复合发蓝工艺,介绍了前处理,发蓝及后处理工序,测量了发蓝膜的附着力,耐磨和耐蚀性,并与传统常温发蓝进行了对比。复合发蓝膜的附着力,耐磨和耐蚀性明显优于传统常温发蓝膜。这是由于复合发蓝膜的孔隙中生成的磷化膜的作用导致的。 相似文献
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H_(807)是聚乙烯醋酸酯与磺化甲酯盐混合而得的一种磷灰石型矿石的聚-复型捕收剂。本文介绍了该药剂的制造工艺及应用情况。实践证明,在常温中性介质条件下该药剂对磷灰石具有较强的捕收能力。 相似文献
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0前言 上世纪90年代,常温磷化工艺已成功地应用于涂装前处理.由于其优异的性能,很大程度上取代了传统的中、高温磷化工艺.常温锌系磷化工艺不断改进和完善,第一代常温锌系磷化工艺. 相似文献
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简介了汽车低温涂装的工艺流程,着重介绍了低温面漆前处理、调配、喷涂、烘干时应注意的事项,讨论了低温金属色漆品种的选择及应用。 相似文献
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分析了汽车制造厂及其涂装车间的能耗,烘干室(涂膜固化工序)成为涂装过程中能耗最大设备的基础上,从涂装工艺、涂料、烘干室等3方面介绍涂装烘干(固化)的节能减排工艺技术;重点介绍了低温烘干型OEM汽车涂料及其节能效果和轻量化汽车车身涂装工艺问题。预测了低温烘干型OEM汽车涂料的发展前景。 相似文献
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本文就80m全自动天然气隧道窑监控系统的设计进行了剖析。重点介绍了窑车自动循环系统、燃烧系统、温度压力自动控制系统、Fameview集控软件功能、PLC控制。对上位机、下位机的通讯结构与功能原理也作了详尽的阐述。 相似文献
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介绍了顶装焦炉改捣固焦炉机械设备的改造过程.重点说明了在顶装焦炉炉体条件下,捣固装煤车结构型式的改进.在装煤车、拦焦机、导烟车上应用适当的除尘设备,增强各设备在炼焦过程中烟尘的收集、治理能力. 相似文献
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本文详细介绍了PLC在全自动隧道窑的主控制、窑头控制、窑尾控制系统中的运用。PLC可以对窑炉的风机系统、窑车自动循环系统、燃烧系统、电机超载及各温度、压力故障进行有效的控制和报警。通过PLC编程电路的控制,可以很方便地实现整个窑炉运行的安全可靠。 相似文献
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介绍了国内自主研发的6.25 m焦炉捣固、装煤、推焦一体机(SCP-机)的功能及其主要配置,重点介绍了SCP-机的煤料储存和输送机构、捣固系统、装煤装置、推焦装置、启闭炉门装置、炉门清扫装置、炉框清扫装置等,着重比较了SCP-机所采用的进口捣固机与德国KOCH公司捣固机。 相似文献
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Investigation of smoke gases and temperatures during car fire – large‐scale and small‐scale tests and numerical investigations
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The hazards for passengers during vehicle fires result from the increasing temperature and the emitted smoke gases. A fire was set on a car to investigate the development of temperature and of gaseous fire products in the passenger compartment. The study was based on a full‐scale test with a reconstructed scene of a serious car fire. The aim of this work was to identify the conditions for self‐rescuing of passengers during a car fire. A dummy, equipped with several thermocouples, was placed on the driver's seat. Also, the smoke gases were continuously collected through a removable probe sensor corresponding to the nose of the dummy in the passenger compartment and analyzed using Fourier transform infrared spectroscopy. Additionally, several car components were investigated in the smoke density chamber (smoke emission and smoke gas composition). It was found that the toxic gases already reached hazardous levels by 5 min, while the temperatures at the dummy were at that time less than 80 °C. The toxicity of smoke gases was assessed using the fractional effective dose concept. The various experimentally parameters (temperature and smoke gas composition) were implemented into numerical simulations with fire dynamics simulator. Both the experimental data and the numerical simulations are presented and discussed. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献