钢锻模热处理工艺的改进

介绍以5CrMnMo为材质的热锻模及几种热处理方法在我公司的应用,说明了模具的制作过程,并根据模具 的结构、模具用于被施锻件的材质、模具所要求的硬度和韧性性能等要求,介绍常规淬火热处理和等温淬火热处理 工艺、超高温淬火热处理三种工艺方法的优缺点。     

光纤传感瓦斯吸收池长度对光谱吸收的影响研究

阐述了瓦斯气体吸收池设计的原则，分析了吸收池长度对传感器测量灵敏度的影响。     

Optimizing the vacuum heat treatment of hot-work tool steels by linear elastic fracture mechanics

Linear elastic fracture mechanics was used to optimize the vacuum heat treatment procedures for conventional hot-work AISI H11 tool steel. The fracture toughness was determined with nonstandard, circumferentially notched and fatigue-precracked tensile test specimens. The fracture testing method is sensitive to changes caused by variations in the microstructure resulting from the austenitizing and tempering temperatures as well as the homogeneity of the material itself. The combined tempering diagram — Rockwell-C hardness, fracture toughness K_1c, tempering temperature — was used for the choice of the vacuum heat treatment parameters necessary to obtain the best properties for a given application with respect to the investigated steel.     

优化热处理工艺提高5CrMnMo热锻模使用寿命

分析了 5CrMnMo钢热锻模具的破坏形式 ,并进行了工艺改进 ,使模具寿命成倍地增加。     

选煤厂新型浮选药剂试验及药剂制度优化

针对高灰难浮煤泥的特点,研究试验了一种新型高效专用捕收剂--N9836取代柴油.试验结果表明,该药剂比柴油选择性强,使浮选更容易,提高了精煤产率,降低了精煤灰分,大幅度提高了浮选抽出率,同时还改善了浓缩机的泡沫问题.阐述了新型高效专用捕收剂的工业性试验过程,给出了工业性试验和实际实施效果.     

一种新型风扳机的设计和制造

论述了新型风扳机的结构及工作原理,阐明这种风扳机的设计制造要点,同时说明该 种风扳机性能及制造的优缺点。     

不同温度真空热处理对FeCrMoCBY非晶合金涂层组织结构与摩擦学性能的影响研究

深部地质钻探过程中,复杂的井下工况对钻具的钻探性能以及可靠性提出了苛刻的要求。钻具钢体表面涂覆具有耐磨耐蚀性的非晶涂层可以有效提高其服役寿命。其中Fe基非晶合金涂层因其优异的耐腐蚀抗磨损性能、较强的非晶形成能力等优势,具有重要的应用价值和较好的经济效益。本文通过大气等离子喷涂技术（Air Plasma Spray, APS）在35CrMo基体上制备得到成分为Fe₄₈Cr₁₅Mo₁₄C₁₅B₆Y₂ （at.%）的非晶合金涂层,并对其进行不同温度的真空热处理,探究了不同温度热处理对涂层基本性能和磨损失效机制的影响。结果表明：涂层经过真空热处理之后,生成的大量硬质相和成分均匀化使得涂层抗磨损性能提高;且随着热处理温度的提高,涂层磨损率逐渐减小。与未经热处理和750 ℃热处理的涂层相比,经过850 ℃热处理之后的涂层具有最佳的抗磨损性能,磨损率仅为未经热处理的Fe基非晶涂层的16.7%。热处理前后涂层的失效机制均为粘着磨损、磨粒磨损、疲劳磨损和氧化磨损。     

新型三维加速度传感器的研制

针对三维加速度测量的特点 ,研制了一种新型应变式全剪切三维加速度传感器。该传感器为电阻应变式 ,采用了薄壁圆筒上开双层错位孔形式的弹性元件 ,从而实现了三维加速度量都利用剪切应变测量。有限元分析计算和初步的实验结果表明 :所研制的加速度传感器 3个正交方向上都有较高的灵敏度和足够的刚度 ,各加速度分量互相干扰小     

The use of electrode probes in determinations of filter cake formation and batch filter scale-up

A well controlled apparatus was used to obtain new data for constant pressure cake formation in a batch leaf filter which could be fitted with electrode type sensing probes. For aqueous suspensions of calcite and talc, the influence of the intrusive electrodes on cake formation was quantified with respect to filtration parameters. As the electrode length and diameter were altered such that the projected cross-sectional area occupied up to 2.6% of the filter area, the average specific cake resistance (as determined by classical filtration theory) was observed to increase by up to 49% and the average cake porosity decreased by up to 21 %. When the electrodes were small relative to the dimensions of the filter cell, their influence on macroscopic cake properties was low. The additional information which electrical resistance measurements provide is discussed in relation to the results and observations by previous researchers and the benefits to filter test analysis and batch filter calculations are highlighted. For moderately compressible cake filtrations it is postulated that the incorrect assessment of cake porosity can typically account for an ∼12 % error in scale-up calculations for batch filters.     

矿用新型调度绞车的设计

通过对JD型调度绞车结构的分析 ,找出其结构存在的缺点 ,设计出新结构的绞车。     

热处理淬火介质的发展

对当前使用的淬火介质做了介绍 ,并指出淬火介质的发展方向。     

一种新型煤矿安全文化的构建

安全文化是煤矿企业的灵魂。随着社会的进步与经济的发展,传统的煤矿安全文化已逐渐与我国煤矿企业的内外部环境相脱离,不能够有效地促进安全生产的实现。以互惠性偏好为核心内容的新型煤矿安全文化,具有严密的科学性,能够扭转我国煤矿企业安全文化建设的滞后性,从而使煤矿安全生产效率得到实质性的改进。     

GP系列盘式真空过滤机特点及应用

本文介绍了GP系列盘式真空过滤机的主要技术特点及工业性实验结果,并与原PG型过滤机相比较,得出结论GP系列过滤机机械性能优良,维护省事,水分低,处理能力大,滤液浓度低.介绍了GP系列过滤机的推广应用情况.     

新型Al-Zn-Mg-Cu合金型材双级时效组织性能研究

通过拉伸性能测试及金相显微镜、扫描电镜和透射电镜分析,研究了一种新型Al-Zn-Mg-Cu合金挤压型材在120℃/4h+ 165℃/8h制度下的拉伸性能、电导率和显微组织等.结果显示:A1-Zn-Mg-Cu合金型材在此状态下的抗拉强度为548 MPa,屈服强度为514.5 MPa,延伸率为11.6％,电导率为41.7％...     

煤矿潮式喷射混凝土设备及综合技术研究

分析了我国潮式喷射混凝土喷射工艺和湿喷工艺的现状。针对我国煤矿潮式喷射混凝土支护存在的问题,提出了采用喷洒化学抑尘剂水溶液的方法强力抑制上料处粉尘和呼吸性粉尘;采用密封性能改进的喷射机加强尘源控制;采用轻便、高效捕尘器捕捉大颗粒粉尘和辅助除尘的技术改造方案。介绍了采用挤压泵喂料、压缩空气输送相结合的原理而研制成功的PS4J型湿式混凝土喷射机的原理、性能和设计特点,以及JD190-Ⅱ型单轴卧式混凝土搅拌机的性能和结构特点。     

The development of a CFD model of a submerged arc furnace for phosphorus production

A computational fluid dynamics (CFD) based model of a submerged arc furnace for the production of phosphorus was developed. The model was constructed to investigate the influence of changing operating conditions on energy distribution within the burden and reaction characteristics such as the position of the solid–gas reaction zone. Two user-developed models generate a volumetric distribution of the mass sources and energy sinks within the packed bed region. Boundary conditions, initial values and material specifications are provided by industrial measurements, laboratory experiments and a combination of empirical and thermodynamical data. The results provide three-dimensional furnace characteristics of gas flow, energy distribution and chemical reactions that will give decision support for a predictive, Dynamic-CFD hybrid model [Scheepers, E., Yang, Y., Reuter, M., Adema, A., 2006. A dynamic-cfd hybrid model of a submerged arc furnace for phosphorus production. Minerals Engineering 19 (3), 309–317].     

新型振动破碎机同步同相运转控制的研究

提出了新型振动破碎机同步同相运转控制的策略，建立了该控制系统的数学模型，并利用windows95/NT环境下的可视化编程语言Delphi3.0开发出该控制系统软件。     

大型箱形井架起立的新工艺

介绍了钢结构箱形井架异地组装、平移、并利用凿井井架采取背向翻转起立的施工方案,叙述了具体操作过程及技术要点.     

精密冷拔机用模具的选材及热处理

介绍精密冷拔机用模具的选材、热处理工艺确定过程 ,分析了双液淬火在GCr15热处理中的应用。     

采场内一种新型充填体隔墙的应用

一种新型的充填体隔墙在采场内的应用,实现了采场间连续回平降低了损失、贫化率和充填成本.