《针织休闲服装》行业标准解读

本文介绍了《针织休闲服装》标准的主要修订内容和依据,包括适用范围的修改、超出标准范围的号型标注方法的增加、纤维含量标注及要求的修改、起球和色牢度相关指标的调整,重点分析了洗液沾色程度试验方法和考核指标的设定思路,旨在帮助企业和检测部门正确理解和运用标准,为准确判定产品的质量提供参考。     

选煤厂洗水闭路循环实践

鹤岗矿务局选煤厂多年来投入大量资金、人力、物力致力于洗水闭路循环实践,基本达到了一级洗水闭路循环标准。简要介绍该厂在洗水闭路循环实践中的做法、经验及取得的效果     

压滤机洗水全自动PLC控制在糖厂的应用

通过对板框压滤机洗水节糖的论述,说明了板框洗水操作的重要,怎样才能够实现板框洗水全自动操作方法及生产管理模式,例举了生产过程中的工艺数据,进而阐明了板框三段洗水全自动控制的重要意义     

Characterization of household care damage for shrink-proof wool fabrics北大核心

Seven kinds of knitting and weaving, wool and wool blended, common and shrink-proof fabrics are selected in this paper. All the fabrics are washed 5 and 10 cycles and their size, surface roughness, bursting strength and sodium hypochlorite solution weight loss rate have been tested. Besides, the mechanism of washing damage to the shrink-proof wool is also studied. The results show that shrinkproof finishing can improve the size stability and surface roughness. However, household care can cause the damage of wool fabrics, such as surface roughness, bursting strength and fiber structure damage. Physical damage is obvious in the first 5 cycle while structural damage changes significantly after washing 5 cycles. Washing process causes obvious change of the warp shrinkage to all fabrics. The resin scouring fabric has the lowest washing damage among the three shrink-proof finishing methods.     

热水洗法处理油田油泥技术的研究

采用热水洗法,对辽河油田油泥进行净化处理。通过筛选、对比,确定最佳实验助剂,分别考察了浆 化液中助剂质量分数、液固比、浆化时间、温度、搅拌速度等实验条件对油的回收率的影响。通过实验确定最佳操作 条件,当助剂质量分数为4%、清洗时间为25min、清洗温度为60 ℃、液固比为4∶1、搅拌速度在200r/min的情况 下处理一次油泥,油的回收率可达94.29%左右;浆化液可循环使用,分离出来的原油经处理后可回收利用。     

带电水冲洗打击力特性及清洗效率仿真研究

为了更好地完成带电水清洗作业,提高带电水清洗的效率,通过流体仿真软件FLUENT对水射流打击力进行仿真研究。分析了大、中、小水冲3种典型喷嘴在不同进口压力和靶距下的打击力特性;分析冲洗角度对清洗效率的影响以及打击力与流量和功率之间的关系。结果表明:水射流打击力随进口压力增加而增加,随靶距增加而降低;冲洗角度会改变射流特性,影响清洗效果;通过增加进口压力来提升打击力比通过增大喷嘴直径更经济。     

湿磨水洗法分离玉门油砂的实验研究

以玉门油砂为实验原料,向其中加入轻质油进行湿法研磨,向生成的油砂浆料中加入配制的水洗剂,对油砂浆进行水洗分离,得到油砂油。对油砂分离后的尾砂组成进行了XRD表征,同时对轻质油与油砂质量比、水洗剂与油砂质量比、水洗剂质量分数、反应温度等因素对油砂分离的效果进行了考察。结果表明,在石脑油与油砂质量比0.15、水洗剂与油砂质量比1.5、水洗剂质量分数8%、反应温度80℃的条件下,油砂油收率可达到96.5%。     

激光冲击强化对TC17表面硬度的影响

TC17钛合金叶片耐磨性较差,在航空发动机恶劣的使用环境下受到冲刷磨损的作用易引发疲劳断裂。研究利用激光冲击强化技术对TC17钛合金进行表面强化,结果表明:激光冲击强化能够显著提高TC17材料硬度,提升材料抗冲刷磨损性能。从不同冲击参数强化后硬度测试结果得出,功率密度4GW/cm2、冲击三次为TC17钛合金最佳的激光冲击强化工艺参数,其硬度提高幅度达到10%以上,并且影响深度超过1mm。激光冲击强化过程中引入的表层晶粒纳米级细化及次表层高密度位错是材料硬度提高的主要原因。     

Arsenic removal from rice by washing and cooking with water

Two Hungarian and one Chinese rice samples were selected in order to establish the extractable arsenic content by washing and cooking in water in a ratio of 6:1, water:rice (cm³:g) by inductively coupled plasma sector field mass spectrometry (ICP-SF-MS). Total arsenic concentration of the Zhenshan 97, Risabell and Ko?röstáj-333 samples were 171.3 ± 7.1 ng g⁻¹, 116.0 ± 3.7 ng g⁻¹ and 139.0 ± 6.1 ng g⁻¹, respectively, which did not exceed the toxic limits established for As in Hungary (0.3 μg g⁻¹) or in China (0.7 μg g⁻¹). The predominant chemical form of As in the raw rice samples determined by on-line high performance liquid chromatography and ICP-MS was arsenite. Moreover, enzymatic hydrolysis with α-amylase + protease and microprobe focused sonication proved that arsenite could be removed in the highest extent by washing and cooking, meanwhile the main As form remaining in the cooked rice was As(V). Thus, it is recommended to prepare rice-containing dishes in abundant water, which should be discarded after washing and cooking. The results were validated with a NIST SRM 1568a.     

压力容器受压元件荧光水洗渗透检测研究

为了发现非铁磁性材料的压力容器受压元件表面缺陷,以不锈钢法兰开裂的检测为例,介绍如何选择合适的表面检测方法,介绍荧光水洗渗透检测过程,并附图详细介绍实际检测中应注意的各要点,包括水洗时的注意事项,选择和使用非千粉的溶剂悬浮显像剂时的注意事项,使用黑先灯的注意事项,确定观察时机的注意事项,辨别相关显示和非相关显示的注意事项等,准确发现了非铁磁性材料表面缺陷。通过追加金相检验,该渗透检测发现的缺陷失效原因为晶间腐蚀。