铝型材氟碳喷涂自动调漆新工艺技术应用试验

对目前铝型材行业氟碳涂料喷涂所采用的人工调漆工艺流程缺陷与不足进行分析,简要介绍了自动调漆喷涂新工艺技术系统的原理、工作过程以及应用试验结果.     

彩涂镀铝锌氟碳板的生产开发

镀铝锌氟碳板是彩涂建筑板的高端产品。文章对镀锌基板、镀铝锌基板及聚酯涂料、氟碳涂料的性能进行了对比分析。并介绍了八钢彩涂机组生产镀铝锌氟碳板的工艺生产方案及改进措施。     

警惕劣质氟碳涂层铝板涌入市场

近年来，建筑业的发展一日千里，装饰材料日新月异，国内城市的大型建筑的外墙普遍采用铝板幕墙，因而彩色氟碳涂层铝板作为新材料迅速得到了推广。氟碳涂料是以聚偏二氯乙烯树脂或配金属铝粉为色料制成的。氟碳基料的化学结构中以氟碳化合链结合，这种化学结构上的稳定与牢固使氟碳涂料的物理性质不同于一般涂料。经氟碳涂料涂装的铝板幕墙，不但能抵风、雨、紫外线、工业废气、酸雨及化学药品等侵蚀，而且能长期保持光洁如新、易于保养清洗、不会变色、褪色剥落、爆裂及粉化，产品质量高而保用期长。以前，国内所使用的氟碳涂层铝板主要依…     

湖南大学研发纳米二氧化钛改性氟碳涂料

湖南大学余刚、胡波年和杨景花等人日前研究成功一种纳米二氧化钛改性氟碳涂料及其制备工艺与应用，该涂料是将锐钛矿型纳米TiO2和金红石型纳米TiO2混合物添加到现有氟碳涂料中，添加比例为：锐钛矿型纳米TiO2和金红石型纳米TiO2混合物，氟碳涂料的质量比为1～4：100；所述锐钛矿型纳米TiO2和金红石型纳米TiO2混合物中，锐钛矿型纳米TiO2和金红石型纳米TiO2二者质量配比为4：1。本发明还包括所述改性氟碳涂料的制备工艺及用于涂敷铝合金板材的前处理工艺。使用本发明之氟碳涂料涂装后的铝合金型材和板材具有良好的白清洁性能，耐沾污和耐洗刷性能，良好的耐候性、耐化学腐蚀性，防水防潮，质量轻、防震、隔声、隔热、色泽均匀、不开裂、不变形、不剥落、不褪色等特点。     

PVDF氟碳彩涂板的生产开发

介绍了PVDF氟碳涂料及其彩板产品的性能特征，分析了八钢彩涂机组试生产PVDF氟碳彩涂板的开发应用过程。     

基于电机振动的辊涂设备传动结构改进

对影响带钢辊涂涂层质量的因素进行分析,涂料的物理性能、辊涂工艺、设备精度及振动是影响涂层质量的重要因素。其中电机振动是辊涂设备振动的重要源头,基于两种方案的辊涂设备传动结构,通过有限元方法,对电机振动在辊涂机刚度及涂层精度等方面的影响进行了详细分析。对辊涂生产过程电气化控制及设计结构合理、高精度辊涂设备有一定的指导意义。     

涂镀钢铁产品发展近况

随着带钢生产技术的日益进步,涂镀钢铁产品已由传统产品向具有高性能的新型产品发展,无铬钝化板、氟碳板、耐指纹板及自清洁板等应运而生.介绍了部分涂镀钢铁产品近期发展的概况,指出在发展过程中需要注意并加以解决的一些问题.     

钢锭模涂料的研制与试验

一、前言根据宝钢生产的要求,铸锭用的钢锭模在每次浇铸前,其模壁必须喷涂锭模涂料。钢锭模涂料一般分为镇静钢涂料和沸腾钢涂料两种。使用涂料是为了减少钢锭表面缺陷,改善钢锭表面质量,提高锭模使用寿命,降低模耗。鉴于宝钢正常生产后,涂料的供应立足于国内。按宝钢炼钢厂铸锭辅助材料中对涂     

涂料的工艺性

一、何谓涂料的工艺性涂膜是涂料涂敷在被涂物的表面上,经干燥后作为涂膜使用的制品,因此,必然要经过涂敷、干燥的工序。通常将易于涂敷,且可以制得平滑、均一、无缺陷涂膜的性质。称之谓涂料的工艺性。涂敷方法有很多种:刷涂、喷涂、静电喷涂、热喷涂、无气喷涂、辊式刷涂、帘式流涂、辊涂等。干燥     

国产外用聚酯卷钢涂料在武钢彩板线上的应用

1 前言彩色涂层钢板具有美丽的装饰性,优良的耐久性和易加工成型性。该产品问世不久便得到各工业发达国家的极大关注,并已广泛应用于建筑、运输、家电、集装箱等各种工业领域。彩色钢板是有机涂料与金属基材相结合的产物,该产品的适用性在很大程度上决定于涂料。因此,彩板的生产对其专用卷钢涂料的施工性能,涂装性能及其理化性能均有严格的要求。武钢从英国引进的彩板生产线,采用两涂两烘工艺,并以悬垂式固化炉和辊涂化学预处理的特点,在设定的机组速度下,对厚     

镁质喷涂中间包工作衬对连铸工艺的优化

介绍了连铸中间包由硅质绝热板改为镁质喷涂料的工作衬的使用及对工艺的优化情况，并且由此确定了每个包的涂料用量。经我厂的实践证明，可以明显改善操作条件和施工过程的不稳定因素，延长中包的使用寿命，降低中包耐材消耗。     

浅谈涂层钢板生产工艺

介绍了涂层钢板的生产工艺、关键生产技术、设备以及涂层钢板所用涂料和覆膜，同时对涂层钢板生产过程中的质量控制要素进行了分析。     

浅谈涂层钢板生产工艺(续)

介绍了涂层钢板的生产工艺、关键生产技术、设备以及涂层钢板所用涂料和覆膜,同时对涂层钢板生产过程中的质量控制要素进行了分析。     

铝型材阳极电泳涂装中应注意的几个问题

从铝型材阳极电泳涂装专业的角度，论述了如何选择符合工艺要求的优质涂料以及电泳涂装设备，强调所选用的电泳设备必须能够满足选用涂料的生产工艺。     

Life-Cycle Cost Analysis using Deterministic and Stochastic Methods: Conflicting Results

Life-cycle cost analysis is an essential approach to differentiating alternative rehabilitation strategies for steel bridge paint systems. An economic analysis (EA), which is a deterministic method, and the Markov decision process (MDP), which is a stochastic method, were used to carry out the life-cycle cost analysis. These analyses were applied to data from two state Departments of Transportation. The deterioration curves for steel bridge paint condition rating against age were constructed. Different rehabilitation scenarios were proposed for steel bridge paint. The EA and the MDP were used to analyze and differentiate among the proposed rehabilitation scenarios. The results of the EA were different from those of MDP for the two data sets. MDP favored the “do nothing” scenario until the end of paint life and then a complete repainting. EA indicated that the scenario “do spot repairs at state 3 of the paint life” and repeat that until the end of the bridge life was superior. The results were analyzed to determine the reason for the conflict.     

控制粗锌含铅合格率的生产实践

在铅锌密闭鼓风炉生产粗锌控制过程中,粗锌含铅合格率是标志生产出粗锌质量高低的一个重要质量指标,针对第三冶炼厂熔炼车间在粗锌生产过程中粗锌含铅超标的问题,研究了铅液温度与金属锌溶解度之间的关系,及生产操作实际的控制措施,分析了锌液中含铅超标的原因,在生产中采取有效的措施,使粗锌含铅得到了有效的控制,提高了粗锌含铅合格率,提升了产品质量。     

汽车覆盖件用6×××系铝合金板材预时效工艺研究

通过对6×××系铝合金预时效处理工艺的研究,开发出能同时显著改善6×××系铝合金车身板冲压成形性和烤漆硬化性的热处理工艺技术。结果表明:固溶水淬后室温停放10min的铝板,最佳的预时效制度为140℃×12min,铝板经上述工艺制度预时效处理后的σ0.2≤142MPa、σb≥266MPa、δu≥18.4%、δb≥24%、n≥0.26、r15≥0.66,再经170℃30min烤漆后其σ0.2≥225MPa。     

Life-Cycle Cost Based Maintenance Plan for Steel Bridge Protection Systems

Life-cycle cost analysis was used to compare different alternative strategies for steel bridge paint systems. It was also used as a tool for steel bridge paint rehabilitation planning. The existing paint systems are lead-based and zinc-vinyl, while the new system is an inorganic/organic zinc, epoxy, and urethane paint system (three-coat). Economic analysis using present value (PV) and equivalent uniform annual cost (EUAC) was applied to compare several steel bridge paint system alternatives. The PV and EUAC were also used to compare different rehabilitation scenarios within the same alternative. Life-cycle cost analysis computations indicate that the three-coat paint system was better than others. Researchers concluded that the best scenario for three-cost system rehabilitation was doing spot repairs every 15 years of paint life. A maintenance plan based on life-cycle cost analysis also favored the “spot repairs every 15 years” scenario. A sensitivity analysis was also conducted to account for uncertainty in the cost, conditions, and subjective data.     

Isotopic ratio analysis in residential lead-based paint and associated surficial dust

OBJECTIVES: This investigation assessed the contribution of lead in lead-based paint (7 samples) to lead-laden dust (8 samples) in a single suburban vacant residence using isotopic ratio analysis. METHODS: Interior/exterior lead-based paint surface concentration was measured by X-ray fluorescence while dust and scrapings were analyzed chemically for total lead content and by mass spectrometry for the associated isotopic ratios. RESULTS: Four out of 5 comparisons of paint (7 samples) and dust (8 samples) for a given location did not match isotopically. In the one location where the isotopic ratio of the paint and dust samples matched closely, some portions of the paint were not intact. One explanation for the isotopic ratio match is that the dust sample may have actually been contaminated with paint flecks. This explanation appears likely since the isotopic ratio for the lead in the dust and paint sample were not in the modern average range of US environmental lead, strongly indicating a local point source of the lead in this dust sample, namely the paint at this location. Lead dust samples whose isotopic ratio lies in the modern average range for US environmental lead cannot be correlated to the paint which is beneath them, since the isotopic ratio of lead in the dust may actually be a composite of many sources of lead over time, as suggested by an isotopic ratio in the modern average range. CONCLUSIONS: From the samples from this one house, the data dispute the contention that intact lead-based paint chalks and creates lead-contaminated dust on its surface. While leaded household dust may contribute to children's lead exposure, intact paint need not contribute to surficial lead-laden dust. Isotopic ratio measurements can be useful for point-source determination by virtue of sample match and by placement of the ratio on the spectrum of isotopic ratio values for lead. Point-source assessment based on isotopic ratio was either strengthened or weakened by placement outside or within the average range for US environmental lead, respectively.     

彩涂板脱漆缺陷对耐蚀性能影响分析

针对彩涂板压型后在使用过程中因表面漆膜脱落．造成耐蚀性能劣化的问题进行了分析,采用扫描电镜、能谱仪和盐雾腐蚀试验等方法,对缺陷板进行检验。结果表明,彩涂板前处理钝化层缺失是其产生脱漆缺陷、造成耐蚀性能下降的主要原因,而涂层厚度减薄也是其中原因之一。