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论述了钛及钛合金设备在环丙装置中的应用现状,分析了钛及钛合金材料在环丙装置中的耐腐蚀性能、机械性能及经济效果对比,并针对部份钛设备存在的失效现象和缺陷提出了改进措施。 相似文献
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概述了钛及钛合金成品以及设备与部件制作过程中,包括热加工成形、焊接与热处理等工序的清洗技术与注意事项. 相似文献
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《信息记录材料》2019,(3)
钛及钛合金型材是重要的航空航天结构材料,等温挤压对提高钛及钛合金型材的质量与产量均具有重大影响,关键是挤压过程变形温度和挤压速度控制。针对25MN钛及钛合金型材挤压机,研制了钛型材模拟等温挤压速度控制系统。该系统由红外测温仪、研华工控机、S7-1500PLC、执行控制装置构成,采用红外测温仪对挤压机模具口进行实时测温,工控机和PLC进行等温挤压速度曲线计算及温度挤压速度闭环控制,实现了对挤压过程变形温度和挤压速度的准确控制。生产运行表明,该系统对提高钛及钛合金挤压型材质量和挤压生产效率以及稳定挤压生产工艺具有重要作用,在钛及钛合金加工领域具有典型应用价值。 相似文献
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本文采用电极脉冲炉惰性气体熔融试样,红外吸收法测定钛及钛合金中氢含量.针对钛及钛合金中氢含量的测定,通过试样制备方式、炉子控制方式,脱气功率、分析功率与时间的条件试验,确定了红外吸收法测定钛及钛合金中氢含量的试验参数为:钛及钛合金称样量为0.10~0.30 g,功率控制方式,脱气功率为3.8 kW,分析功率为3.3 k... 相似文献
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钛及钛合金材料的焊接技术 总被引:2,自引:0,他引:2
通过对钛及钛合金材料特点及焊接性的分析研究,并针对钛及钛合金焊接中易产生氧化、裂纹、气孔等焊接缺陷,使我们掌握钛及钛合金材料的焊接技术要求,并通过制定合理的焊接工艺,获得我们满意的焊接质量。 相似文献
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介绍了钛及钛合金在化工行业的应用,针对钛制化工设备的特点,经过长期的研究、试验和检验,总结了确保设备制造质量、特别是焊接质量的行之有效的施工工艺方案和操作规程。 相似文献
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Solid-State Reaction Between Titanium Carbide and Titanium Metal 总被引:1,自引:0,他引:1
The solid-state reaction between titanium and titanium carbide to form substoichiometric titanium carbide was studied by annealing single-crystal diffusion couples at T = 1350° to 1525°C. The thickness of the epitaxially grown carbide layer was almost an order of magnitude greater than that predicted from published values for chemical diffusion of carbon through titanium carbide. A value of 424 exp[–368 kJ/mol/RT] cm2 /s is calculated for the chemical diffusivity of carbon from the diffusion-couple data of the present study. This anomalously rapid diffusion of carbon is associated with short-circuit diffusion along platelets of Ti2 C which develop parallel to {111} planes in TiC during the reaction. The Ti2 C platelets extend from the original Ti-TiC interface to the moving reaction front and also grow from the original interface into the original carbide crystal. 相似文献
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Microstructural Properties of Combustion-Synthesized and Dynamically Consolidated Titanium Boride and Titanium Carbide 总被引:1,自引:0,他引:1
Laszlo J. Kecskes Thomas Kottke rus Niiler 《Journal of the American Ceramic Society》1990,73(5):1274-1282
Full-density TiB2 and TiC have been fabricated by combustion synthesis reactions followed by dynamic compaction of the still hot, porous ceramic body. The relationship between the morphologies and purities of the precursor powders used and the ceramic product structures is presented. Intergrain bonding and residual porosity of the dynamically consolidated products are found to depend strongly on the impurity levels of the precursor powders. Analysis of the TiC indicates that density and microhardness increase as a function of the C/Ti ratio, with maximum values at the ratio of 1.0. 相似文献
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钛材的耐蚀性与新钛材的开发 总被引:1,自引:0,他引:1
介绍钛在酸性介质、氧气和海水中的耐蚀性 ,对钛的局部腐蚀、电偶腐蚀和氢脆现象进行了论述 ,重点介绍国内外研制的新型钛材的化学成分、应用范围和发展前景。 相似文献
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Laszlo J. Kecskes rus Niiler Thomas Kottke 《Journal of the American Ceramic Society》1993,76(12):2961-2970
The combustion synthesis/dynamic consolidation (CS/DC) technique was applied to titanium–carbon and titanium–boron mixtures with different initial precursor carbon and boron powder morphologies. The evolution of the CS/DC product structure was investigated by analyzing and comparing the combustion synthesis products following three fabrication process steps: reacted loose powders, reacted green compacts, and reacted green compacts which were dynamically consolidated shortly after the synthesis. In all cases, the purity of the precursor carbon and boron powders was found to affect the residual porosity of the products. However, the dependence of the resultant product grain morphology on the morphology of the precursors was not as straightforward. Correlations between the respective product structures and possible reaction mechanisms are discussed. 相似文献
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Golubkov A. N. Gudarenko L. F. Zhernokletov M. V. Kayakin A. A. Novikov M. G. 《Combustion, Explosion, and Shock Waves》2021,57(4):479-486
Combustion, Explosion, and Shock Waves - This paper presents the results of an experimental study of shock compression of titanium hydride (TiH2) and the deuterides of... 相似文献
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高钛渣收尘灰其钛含量是相当可观的,我国生产钛白粉厂比较多,生产过程中所用原料产生尘灰的数量也是值得关注的,如果不加以充分利用,造成的环境污染比较大。实验研究的目的是对二次资源的充分利用,减少环境污染。通过对比目前工业上应用较多的电炉熔炼法、硫酸浸出法、盐酸浸出法、还原锈蚀法的优缺点,再根据高钛渣收尘灰的的组成,实验选择盐酸浸出法,其盐酸在实验过程中可以实现循环利用,大大减少"三废"量。实验主要研究了酸浸浓度,酸浸温度,酸浸矿酸比,酸浸时间对钛的富集和回收的影响。结果表明:当盐酸浓度为6 mol/L,酸浸温度为90℃,矿酸比为1∶1.3,酸浸时间为5 h,除去铁锰等可溶性杂质的效果比较好,处理渣中的钛含量可以提高到43.17%。 相似文献
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钛及其合金焊制压力容器制造质量的关键问题 总被引:1,自引:0,他引:1
通过分析钛材的固有物理化学性能,论述了钛制压力容器制造过程中,产生杂质元素污染的主要环节及其危害性、表面特征以及主要监检环节的设置。 相似文献