Expert Experience and Data-Driven Based Hybrid Fault Diagnosis for High-SpeedWire Rod Finishing Mills

The reliable operation of high-speed wire rod finishing mills is crucial in the steel production enterprise.As complex system-level equipment,it is difficult for high-speed wire rod finishing mills to realize fault location and real-time monitoring.To solve the above problems,an expert experience and data-driven-based hybrid fault diagnosis method for high-speed wire rod finishing mills is proposed in this paper.First,based on its mechanical structure,time and frequency domain analysis are improved in fault feature extraction.The approach of combining virtual value,peak value with kurtosis value index,is adopted in time domain analysis.Speed adjustment and side frequency analysis are proposed in frequency domain analysis to obtain accurate component characteristic frequency and its corresponding sideband.Then,according to time and frequency domain characteristics,fault location based on expert experience is proposed to get an accurate fault result.Finally,the proposed method is implemented in the equipment intelligent diagnosis system.By taking an equipment fault on site,for example,the effectiveness of the proposed method is illustrated in the system.

Synthesis and Characterization of Nonionic Waterborne Polyurethane and Application to Wool Fabric Finishing

A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol(N220),isophorone diisocyanate(IPDI),trimethylolpropane poly(ethylene glycol monomethyl ether)(N120),1,4-butanediol(BDO) and trimethylolpropane(TMP) as the main materials.The effects of the NCO/OH ratio on the emulsion and film properties of NWPU were explored.The experimental results show that the NWPU prepared at an NCO/OH ratio of 1.1 has good emulsion stability and easy film formation,and the resultant film was elastic,soft,and transparent.The sample was used for wool finishing and the application performance was evaluated.When the NWPU dosage reached 40 g·L^(-1),the fabric area felt shrinkage rate reduced from 8.97% to 4.75%,the pilling rating raised from grade 2-3 to grade 4,and the whiteness value only decreased by 3.87%.

Epiphanic Revival: Exploring Metallic Finishes on Batik Fabrics in Ghana

Batik fabric is an integral part of the traditional cloth culture of the Ghanaian traditional setting. However, the batik fabric has marginal usage due to its casual visual appearance. This studio practice seeks to explore the epiphanic revival in the use of metallic finishes on batik substrate to create an enhanced visual appearance with embellished aesthetic sensibilities and diversified use. The researchers adopted the studio-based approach of the qualitative design to manipulate handmade tools, techniques (collagraph) and the batik fabrics through experimentation to produce a glittering mercurial batik fabric which is typically an industrial practice. The studio practice took place at the Textile Design and Technology studio, Takoradi Technical University, Ghana. The traditional batik fabric was manipulated through fabric decoration techniques in accordance with studio-based practices. The Addie model was adopted as a methodological approach in the analysis, design, development, implementation, and evaluation processes of the experimentation processes of the study. Findings revealed that the hand techniques used in the production process for the metallic prints produced interesting accidentals finishes and effects that machine work cannot achieve, producing new discoveries of visual enhancements of traditional batik fabric. Traditional batiks became mercurial with glittery effects. The metallic prints on the fabric also changed its consumption pattern from mere casual fabric to classic and cosmopolitan fabric for varied uses suitable for wearable to non-wearable.

Textile industry innovations in dyeing and finishing processes:Minimizing environmental impact

Textiles are one of the oldest industries in the world which has been manufacturing fabrics and materials needed for various purposes.However,the industry has been confronted with some problems regarding its pollution;specifically the dyeing and finishing processes.As for the given issues,there has been a trend in recent years to come up with more environmentally friendly solutions.

Finishing first with Monforts at Techtextil 2024

Monforts–which celebrates its 140th anniversary this year–continues to lead the field in finishing and coating technologies for technical textiles.The company is looking forward to many fruitful discussions on the scope of existing and new processes and applications at the forthcoming Techtextil show in Frankfurt from April 23-26.

Construction Cost Control Strategy of Finished House Based on BIM-5D

Building Information Modeling(BIM)technology can not only achieve project refinement management of the construction process based on a 3D model but also form a BIM-5D model based on the fusion of progress data and cost data to achieve the dynamic control of the whole process of project cost.This paper discusses the application of BIM-5D in the cost control of finished house construction,aiming to provide technical reference for China’s finished house project units,so that they can master how to realize the construction of cost control system based on BIM,the monitoring of the key coefficients of the cost,corrective action,to ensure that the project cost deviation is within the controllable range,and to make an effective guarantee for the economic benefits of the project construction.

XP-endo Finisher清除椭圆形根管细菌生物膜的效果研究

目的:比较XP-endo Finisher(XPF)和被动超声冲洗(passive ultrasonic irrigation,PUI),及两者联合应用清除椭圆形根管细菌生物膜的效果。方法:选取54颗成人离体单根管横截面为椭圆形的前磨牙,建立多菌种生物膜感染根管模型。厌氧培养4周后随机选取6颗为对照,扫描电镜(Scanning electron microscopy,SEM)确认多菌种生物膜形成。余牙应用Vortex Blue预备到40/.06后分为4个实验组(n=12),分别采用传统注射器冲洗(conventional needle irrigation,CNI)、PUI、XPF、PUI+XPF结合3%次氯酸钠溶液进行根管处理。采集样本根管尖、中、冠1/3SEM图像,计算残余细菌生物膜面积百分比。结果:细菌清除效率由高到低依次为PUI+XPF、XPF、PUI、CNI,前两者无统计学差异(P>0.05)。结论:XPF清除椭圆形根管生物膜的效果优于PUI和CNI,与PUI联合应用有加强效果但无显著差异。

Effects of long-chain fatty acid supplementation on the growth performance of grower and finisher pigs: a meta-analysis

Background: Supplementation of feed with long-chain fatty acids(LCFAs) during the grower and finisher phases has long been discussed as a growth promotion strategy in pigs, but its effects are inconsistent. The purpose of our study was to comprehensively evaluate its effects on the growth performance based on the average daily gain(ADG), average daily feed intake(ADFI) and gain: feed(G:F) ratio and to unveil the roles of the basal diet, LCFA concentration and LCFA saturation.Results: We searched the Pub Med and Web of Science databases(articles published from Jan 1 st, 2000, to Sep 30 th,2018;restricted to English) and compared LCFA-supplemented diets with control diets. We retrieved 2346 studies, 18 of which(1314 pigs, 26 records) were eligible for our analysis. We used a random-effects model to calculate the weighted mean differences(WMDs) and 95% confidence intervals(CIs). LCFA supplementation in the grower-finisher phase improved the ADG(WMD = 41.74 g/d, 95% CI: 8.81 to 74.66, P = 0.013) and G:F ratio(WMD = 0.019, 95% CI: 0.006 to 0.032, P = 0.003). For supplementation solely in the finisher phase, we found a similar performance in the ADG(WMD = 39.93 g/d, 95% CI: 26.48 to 53.38, P < 0.001) and G:F ratio(WMD = 0.019, 95% CI: 0.006 to 0.032, P < 0.001) but a reduction in the ADFI(WMD =-83.863 g/d, 95% CI:-156.157 to-11.569, P = 0.023). Specifically, approximately 5%LCFA supplementation in the finisher phase had significant effects on the ADG(WMD = 51.385 g/d, 95% CI: 35.816 to66.954, P < 0.001), ADFI(WMD =-102.869 g/d, 95% CI:-189.236 to-16.502, P = 0.02) and G:F ratio(WMD = 0.028, 95%CI: 0.018 to 0.039, P < 0.001), whereas a concentration of approximately 1% exhibited no effects.Conclusions: Overall, regardless of the basal diet and saturation, LCFA supplementation greatly improves the growth performance of grower and finisher pigs, primarily by increasing the energy density.

XP-endo Finisher锉对根管内壁玷污层清除效果的体外研究

目的评估XP-endo Finisher(XPF)锉与被动超声冲洗(PUI)对根管内壁玷污层的清除效果。方法选择60颗离体单直根管下颌前磨牙,距根尖16 mm处截冠,采用S3镍钛锉预备到3S,根据终末处理方式不同将样本随机分成6组。A组:3 mL 3%次氯酸钠溶液联合XPF处理1 min;B组:3 mL 3%次氯酸钠溶液联合XPF处理1 min,再用4 mL 17%乙二胺四乙酸(EDTA)溶液冲洗1 min;C组:3 mL 3%次氯酸钠溶液联合PUI处理1 min;D组:3 mL 3%次氯酸钠溶液联合PUI处理1 min,再用4 mL 17%EDTA溶液冲洗1 min;E组:3 mL 3%次氯酸钠溶液30号侧方冲洗针冲洗1 min;F组:3 mL 3%次氯酸钠溶液30号侧方冲洗针冲洗1 min,再用4 mL 17%EDTA溶液冲洗1 min。采用扫描电子显微镜观察玷污层形态,并比较根尖1/3区、根中1/3区牙本质小管开口数。结果 A、C、E组实验样本整个根管壁都有玷污层覆盖,A组与C组牙本质小管开口数明显高于E组(P<0.05),而A组与C组的差异无统计学意义(P>0.05);F组根中区、B组和D组根尖区有少量玷污层覆盖,牙本质小管开放或半开放;F组根尖区可见玷污层,牙本质小管封闭或半封闭;B和D组根中区根管壁玷污层均被有效去除;在根尖1/3区和根中1/3区,B组与D组牙本质小管开口数高于其他4组(P<0.05),而B组和D组间的差异无统计学意义(P>0.05)。结论 XPF锉对根管内壁玷污层的清洁效果与PUI无明显差异,可用于根管预备后提高根管清洁效果。

Optimization of Finishing Process and Energy Savings in Denim Textile Facility

Denim is widely accepted among exported textile products due to its aesthetics, appearance, and fashion. Practitioners employed several physical or chemical treatments to improve denim qualities in denim finishing operations. So, several treatment processes, including enzymatic, bleaching, singeing, heat set, and ozone finish, are used, which made this processing more energy consumption and time-consuming. Therefore, it is significant to investigate how changing the chemicals and raw ingredients could improve the finishing process, which is environmentally and economically beneficial for sustainable production practices in the denim finishing process. This study’s research design comprises an experimental investigation in a denim plant in Bangladesh. Two different fabrics were chosen to analyze, determining the potential savings of finishing on the denim fabrics’ performance characteristics. By deducting singeing and heat-set processes, the researchers ran an experimental process by maintaining the same length of fabric. Then, the impacts of finishing process optimization on the mechanical, thermal, and comfort parameters of drape, stiffness, and tear strength were examined. The study’s findings demonstrated that this experiment increased productivity and reduced the finishing unit’s energy consumption without compromising the denim fabrics’ quality. This study significantly impacts environmental sustainability by preserving limited energy resources and manufacturing denim finishing processes.

大蒜素对育肥猪生长性能、屠宰性能及肉品质的影响

试验探讨了不同水平的大蒜素对育肥猪生长性能、屠宰性能及肉品质的影响,确定大蒜素在育肥猪生产中的最适添加水平。试验选择体重相近的健康的“杜×长×大”三元杂交育肥猪250头,随机分成5组,每组5个重复,每个重复10头猪。对照组育肥猪饲喂基础饲粮,大蒜素组育肥猪分别饲喂含有50(试验组1)、100(试验组2)、200(试验组3)、400 mg/kg(试验组4)大蒜素的试验饲粮。预试验1周,正式试验期42 d。结果显示,与对照组比较,试验组3和试验组4育肥猪末重显著提高(P<0.05),试验组3的平均日增重提高了11.60%(P<0.05),试验组2和试验组3育肥猪的料重比降低了8.64%和11.96%(P<0.05)。试验组3组育肥猪的宰前活重显著高于对照组(P<0.05);试验组2、试验组3和试验组4育肥猪的胴体重显著高于对照组(P<0.05),背膘厚度显著低于对照组(P<0.05)。试验组3和试验组4育肥猪的背最长肌pH值显著高于对照组(P<0.05),滴水损失显著低于对照组和试验组1(P<0.05),肌苷酸含量显著高于对照组(P<0.05);试验组3背最长肌的红度显著高于对照组和试验组1(P<0.05),试验组2、试验组3和试验组4背最长肌的剪切力显著低于对照组(P<0.05)。试验组3和试验组4育肥猪背最长肌中的总氨基酸、总必需氨基酸及鲜味氨基酸含量显著高于对照组(P<0.05)。研究表明,在育肥猪饲粮中添加适量的大蒜素可以提高生长性能和屠宰性能,改善肌肉品质,大蒜素的最适添加水平为200 mg/kg。

Jeanologia reduces water consumption from 100 to 1 liter in garment finishing

Since 1994 the mission of Jeanologia has been to create an ethical,sustainable and eco-efficient industry,marking a new era through sustainability,digitalization and automation.The company is leading the transforma­tion of the industry with its disruptive technologies:laser,G2 ozone,e-Flow,SmartBoxes,Colorbox and H2 Zero,ca­pable of increasing productivity,reducing costs,water and energy consumption,and eliminating harmful emissions and discharges,guaranteeing zero pollution.

Knit Excellence from Goller is well-suited to all wet finishing treatments

The Knit Excellence package includes a full range of machinery for the complete treatment of knitted fabrics–Knit Complexa for bleaching,Knit Mercer for mercerisation,Knit Economica for dyeing and the versatile Sintensa washing concepts for washing after dyeing and printing.

计及多目标约束的成品卷烟销售订单配送调度优化

针对制造业供应链中的跨地域多运输中心大数据订单物流调度问题,对涉及多约束条件和多目标的异构运输车辆调度问题展开研究。根据烟草制造工业的实际运输任务需求,考虑制造订单安排、车辆准运证限制、运输车辆物理限制、运输时间窗、排产出库时间等实际约束,搭建了以包括车辆等待卷烟出库的最短运输时间,最低运输费用及最高车辆利用率为优化目标的成品烟物流车辆跨地域调度优化模型。设计了基于差分进化的混合多元宇宙算法(DE-MVO)用以解决该模型。最后基于某烟草工业企业的实际生产订单数据进行实验,将所设计的算法分别与粒子群(PSO)算法、差分进化(DE)算法、鲸鱼优化(WOA)算法、遗传优化(GA)算法、乌鸦搜索(CSA)算法、天鹰座优化器(AO)、多元宇宙(MVO)等前沿算法进行横向对比,对比结果表明所设计的算法在全局搜索能力、寻优精度等方面更优于其他算法,进一步表明所建立的模型在求解制造业供应链运输车辆调度问题中具有可行性。

抗熔滴型多元有机硅阻燃剂整理锦纶6织物的制备及其性能

为提升锦纶6织物阻燃性能,基于水解缩合反应原理,开发设计多元协效抗熔滴型含磷席夫碱基有机硅阻燃剂,并采用浸渍法对锦纶6织物进行阻燃整理。借助红外光谱、热重分析仪、微型燃烧量热仪、极限氧指数仪、扫描电镜、拉曼光谱及热裂解气质联用仪等技术分别对阻燃锦纶6织物的化学结构、热稳定性、燃烧行为及其燃烧后炭化层与气相热解产物系统研究。结果表明:阻燃锦纶6织物的炭化能力及阻燃性能有效提升,其残炭率可增加至33.9%,且在火焰移开后可快速实现自熄,并未有熔滴产生;相较于锦纶6织物,阻燃锦纶6织物的热释放速率峰值(PHRR)及总释热量(THR)分别下降23.8%及20.4%,火灾安全性有效提升;经水洗20次后,阻燃锦纶6织物仍可实现自熄,其PHRR及THR值相较于锦纶6织物,仍分别下降了14.1%及13.6%。

苎麻织物退浆与整理一浴法工艺优化

为研究苎麻织物退浆与整理一浴法处理工艺,采用含纤维素酶和淀粉酶的复合酶处理苎麻织物,分别研究了pH值、温度、浴比、整理时间、酶质量分数对苎麻织物刺痒感的影响。结果表明:在pH值5.0,温度50℃,浴比1∶10,整理时间30 min,淀粉酶质量分数1.25%,纤维素酶质量分数1.00%条件下,苎麻织物刺痒感降低41.6%,退浆率达到92.8%,失重率为11.8%,经向纬向断裂强力损失率分别为11.2%和13.5%。该复合酶一浴法技术缩短了苎麻织物退浆与整理的工艺流程,降低了苎麻织物的刺痒感,并能保持较好的织物强力。

不同水平金针菇菌糠对育肥猪生长性能、养分表观消化率及经济效益的影响

试验旨在研究不同水平的金针菇菌糠对育肥猪生长性能、养分表观消化率及经济效益的影响。选择200头体重相近、健康的“杜×长×大”三元杂交育肥猪,随机分成4组,每组5个重复,每个重复10头猪。对照组育肥猪饲喂基础饲粮,试验组育肥猪分别饲喂含有2.5%、5.0%和10.0%的金针菇菌糠的试验饲粮。试验期8周。结果表明,与对照组相比,5.0%菌糠组育肥猪的平均日增重显著升高(P<0.05),料重比显著降低(P<0.05);2.5%、5.0%菌糠组育肥猪对干物质的表观消化率显著提高(P<0.05),5.0%菌糠组育肥猪对粗纤维的表观消化率显著提高(P<0.05),2.5%、5.0%、10.0%菌糠组育肥猪对粗蛋白的表观消化率显著提高(P<0.05);2.5%、5.0%、10.0%菌糠组的增重收入分别提高了21.60、43.20、21.28元/头,利润分别提高了14.45%、25.29%和18.13%;5.0%、10.0%菌糠组育肥猪血清球蛋白水平显著提高(P<0.05),血清尿素氮、胆固醇及甘油三酯水平显著降低(P<0.05)。研究表明,育肥猪饲喂适量的金针菇菌糠可以提高生长性能、养分表观消化率、养殖利润,改善部分血清生化指标,且金针菇菌糠的适宜添加量为5.0%。

低蛋白质饲粮中添加益生菌对育肥猪生长性能、粪便菌群组成和代谢组特征的影响

本试验旨在探讨低蛋白质饲粮中添加益生菌对育肥猪生长性能、粪便菌群组成和代谢组特征的影响。选取平均体重为(80.56±0.45)kg的长×大育肥猪90头,随机分为3组,分别为对照组、试验Ⅰ组和试验Ⅱ组,每组3圈(重复),每圈10头(阉公猪与母猪各占1/2)。对照组饲喂含14%蛋白质的常规蛋白质饲粮,试验Ⅰ组饲喂含12%蛋白质的低蛋白质饲粮,试验Ⅱ组饲喂添加益生菌的低蛋白质饲粮(每千克低蛋白质饲粮中含2.0×10^(9)CFU乳酸菌和2.0×108CFU酿酒酵母)。预试期5 d,正试期42 d。结果显示:1)与对照组和试验Ⅰ组相比,试验Ⅱ组的平均日增重显著提高(P<0.05),料重比显著降低(P<0.05)。2)与对照组和试验Ⅱ组相比,试验Ⅰ组粪便中颤螺菌目、毛螺菌目、毛螺菌科、瘤胃球菌科、UCG-005、粪杆菌属、小杆菌属和福涅氏菌属的相对丰度显著降低(P<0.05),解纤维素菌属的相对丰度显著增加(P<0.05);试验Ⅱ组粪便中毛螺菌目、乳杆菌目和毛螺菌科的相对丰度显著高于对照组(P<0.05)。3)试验Ⅰ组与对照组、试验Ⅱ组与对照组以及试验Ⅰ组与试验Ⅱ组粪便样品间分别发现9、37和41种差异代谢物;不同组间差异代谢物的KEGG通路富集分析显示共有27条富集通路;与对照组和试验Ⅰ组相比,试验Ⅱ组粪便中5-羟基吲哚乙酸的表达量显著升高(P<0.05),肾上腺素的表达量显著降低(P<0.05);试验Ⅰ组粪便中N-乙酰-L-苯丙氨酸的表达量显著低于对照组和试验Ⅱ组(P<0.05);试验Ⅱ组粪便中L-谷氨酰胺、D-葡萄糖醛酸的表达量显著高于试验Ⅰ组(P<0.05)。4)与对照组相比,试验Ⅰ组和试验Ⅱ组粪便中总支链脂肪酸、总短链脂肪酸、氨氮和粪臭素含量显著减少(P<0.05);与试验Ⅰ组相比,试验Ⅱ组粪便中乙酸含量显著减少(P<0.05),丁酸含量显著增加(P<0.05)。综上所述,在低蛋白质饲粮中添加益生菌(乳酸菌和酿酒酵母)可改善育肥猪的肠道菌群结构及其代谢物表达,减少粪便中总短链脂肪酸、氨氮和粪臭素含量,提高育肥猪的平均日增重和饲料转化效率。

云南成品茶产业发展现状、问题和对策

目的:通过梳理和分析云南成品茶发展现状及存在的问题,促进产业提质增效。方法:基于对行业主管部门、茶叶产业专家、新型经营主体进行实地调研、部门座谈和数据整理。结果:云南成品茶产业综合实力不断增强的同时,生产规范标准化、经济效益、市场供需、品牌规模效应方面存在的问题制约了其高质量发展。结论:从强化标准化生产、推动经济高效化、高质量做大做优市场、统筹提升品牌效应方面提出对策建议。

考虑节点刚度随机性的焊接钢筋部品变形计算方法研究

为量化钢筋部品刚度,从受力机理角度出发,基于试验和理论分析,提出考虑刚度随机性的焊接钢筋部品变形计算方法。从受力机理的角度提出三向转动刚度独立力学求解模型,考虑钢筋直径的影响,设计了105组T形焊接钢筋试件及两类加载固定试验装置,开展分级加载试验;在此基础上,考虑焊接节点转动刚度随机性,提出基于蒙特卡洛随机抽样的焊接钢筋部品变形计算方法,并分别开展了6个焊接钢筋网片和6个钢筋块体试验进行验证。结果表明:钢筋焊接节点刚度与钢筋直径有关,当焊接条件相同时,钢筋直径越大,焊接节点刚度越大;同一钢筋直径组合的焊接节点转动刚度基本符合正态分布,3个方向的转动刚度R x>R z>R y;钢筋焊接节点刚度与焊接节点断面面积基本呈线性关系;竖筋和横筋连接节点刚度对钢筋部品变形影响显著,所采用的节点刚度取值方法计算的焊接钢筋部品变形偏差均在10%以内,与传统刚接和铰接方法相比,变形计算精度大幅提高,变形计算方法合理。