八钢2500m~3高炉开炉及生产准备实践

对八钢A高炉开炉及其生产准备经验进行了总结。由于开炉准备充分,开炉料方案制定合理,开炉操作得当,实现了顺利开炉。     

八钢热轧花纹钢板轧辊加工工艺的改进

八钢热轧薄板厂自投产以来,由于疆内缺乏花纹钢板轧辊的加工能力,一直没有进行花纹钢板的生产。介绍了对热轧厂原来的CK84160重型数控车床进行改造,将原有车削功能改造成具有车和铣两大功能,在不改变原有功能的基础上,增加了铣削功能,使加工花纹钢板轧辊成为现实,热轧薄板厂也实现了花纹钢板的批量生产。     

提高锡铁山铅锌矿伴生金银回收率的优化工艺研究

通过锡铁山铅锌矿石中伴生金银的分布规律的研究,论述了伴生金银的回收现状及生产实践,指出了现存的主要问题和今后的主攻方向。     

功率电子封装技术及确定其热阻的实现方法研究

随着用户对功率电子散热效果要求的提高，早先在功率封装上附加散热片的方法实现起来很困难。本文在介绍了功率电子器件的工艺技术后，详细地讨论了封装技术对功率电子的重大影响，并以热增强型封装、热插片封装为例，描述了功率封装的动、静态特性，并给出了计算热阻的处理步骤和测量电路，具有一定的参考价值。     

浅谈建筑节能的重要性及建筑节能技术措施

结合建筑节能在世界建筑发展的大潮流中是一个极为重要的热点,是建筑技术进步的一个重大标志,也是建筑界实施可持续发展战略的一个关键环节,这一事实阐述了建筑节能的重要性,并总结了目前常用的一些节能技术措施,从而推动节能行业的发展。     

中福西湖花园钻孔灌注桩质量控制

本文通过工程实例 ,介绍了钻孔灌注桩施工质量控制的成功经验     

超（超）临界锅炉用厚壁SA335-P91钢管的高效率焊接方法

目前超（超）临界锅炉的新机组制造和老机组改造都大量采用进口厚壁SA335-P91钢。进口SA335-P91钢焊接的主要问题是冷裂纹倾向和焊接接头韧性低。通过两种焊接工艺的试验分析表明,采用GTAW＋SMAW＋SAW的组合焊接工艺并严格焊接工艺控制、优化焊接质量检验是焊接厚壁SA335-P91钢的高效率方法,既能满足了焊接质量要求,又能满足焊接高效率要求。     

Electron-beam irradiation of fresh broccoli heads (Brassica oleracea L. italica)

Broccoli is a popular item in the diet of the US population, commonly found in salads ready-to-eat. The recent recalls of fresh produce due to contamination with Escherichia coli and other pathogens emphasize the need to find effective means to treat minimally processed fresh foods. Our study assessed the effect of ionizing radiation using electron beams on the shelf-life, physicochemical properties, and consumer acceptability of broccoli florets. One-hundred broccoli heads were irradiated at 1, 2, and 3 kGy with a 10 MeV linear accelerator at 22 °C. We monitored pH, color, texture, respiration rate, weight loss, chlorophyll, total carotenoids, and vitamin C of irradiated and non-irradiated samples at 5-day intervals up to 14 days at 4 °C and 95% RH. Fifty consumer panelists scored the samples using a nine-point hedonic scale.Irradiation did not affect color, firmness, pH, and weight loss of the samples. Both irradiated samples and controls showed a slight change in color during storage, though the effect was not dose-dependent. Irradiation affected (P < 0.05) the respiration rates on the first 5 days of storage (higher CO₂ levels) but all samples, including the controls, attained the same equilibrium value. Vitamin C content of all samples decreased (P < 0.05) with storage time. Chlorophyll and total carotenoids content followed the same trend. In terms of overall acceptability, color, odor, and texture, all irradiated samples were highly accepted by the panelists with scores of 5 and above. By the end of shelf-life, only the controls showed significant quality decline (yellow color, off-odor) due to microbial spoilage. In summary, electron-beam treatment up to 3 kGy maintains the overall quality of fresh broccoli.     

环氧树脂自流平地面施工工艺探讨

自流平环氧树脂地面具有不起灰、收缩率小、耐磨损、耐酸碱、色彩丰富、硬度较高、使用年限长等优点,可广泛应用于工业厂房洁净地面。但在我国起步较晚,结合实际工程对环氧树脂自流平地面施工工艺进行了研究探讨。     

粗纺花式线产品开发技术探讨

主要描述了花式粗纺面料的开发,并就其生产和工艺进行研究讨论,提出了生产过程中出现的问题,并对部分问题的解决给出了建议。