蔗渣碎粒板生产质量控制

产品质量不仅关系到企业的生存和发展，而且关系到资源的合理开发和利用；本文从生产原料、生产过程和产品质量控制三方面，扼要地阐述了蔗渣碎粒板生产质量控制的重要性和必要性。

湿法制纤维板改为干法制碎粒板的工艺技术

介绍了湿法制蔗渣纤维板改为干法制蔗渣碎粒板的工艺技术及其取得的可观效果．

蔗渣碎粒板发展的市场预测和技术经济情况分析

发展蔗渣碎粒板生产,具有原料丰富、来源集中、处理工艺简单等优点;随着经济的恢复,其销售已回复旺季。根据市场预测和产品销售情况分析,相信今后较长一段时间,蔗渣碎粒板仍将会持续发展,并有广阔的市场。最后对蔗渣碎粒板的建厂规模与技术经济情况进行了分析,认为按我国目前的具体情况以建年产1万m^3的厂较为合适。

甘蔗渣碎粒板生产中热压温度的选择

甘蔗渣(下称蔗渣)碎粒板生产在近30年来得到了发展,而且已成为完整的甘蔗糖业综合利用项目。蔗渣碎粒板生产的技术关键在于热压工艺,其合理性和科学性决定了产品的产量、质量和单位成本,而热压工艺的关键在于热压温度的选择。以往,蔗渣经 S 型分选器一。

湿法纤维板改干法碎粒板生产工艺的实践

介绍了把湿法蔗渣硬质纤维板生产线改造成为干法蔗渣碎粒板生产线的技术方案，主要设备配置及取得的成效。认为这是改造湿法硬质纤维板生产线的较好途径，具有投资省、见效快的特点。

湿法纤维板生产线改成干法碎粒板生产线的节能效果

1 引言 横县糖厂湿法纤维板生产线建于1982年,1984年初建成投产,设计能力为年产湿法蔗渣纤维板2400吨,该生产线的建成投产,提高了横县糖厂资源综合利用的水平。但随着生产的发展和人民群众消费水平的提高,湿法纤维板生产线暴露了存在的问题:一是产品单一,质量差,只能生产4毫米左右的薄板,单面光,吸湿性大,易变形,适用范围窄,产品缺乏市场竞争力,已面临淘汰边缘;

旧混凝土板粒石化再生骨料吸水特性研究

为了揭示旧混凝土板粒石化再生骨料吸水率的特性,根据粒径和砂浆裹附量对粒石化再生粗骨料进行分类,首先从粒石化再生骨料颗粒角度探讨粒石化再生骨料颗粒的吸水规律和影响因素,通过SEM(扫描电子显微镜)电镜扫描试验分析其原因,然后根据粒石化再生分类骨料与粒石化再生粗骨料的数量关系,通过数学演绎推导的方法进一步探讨粒石化再生粗骨料的吸水规律和影响因素。研究结果表明:砂浆裹附量和级配对粒石化再生骨料吸水率产生重要影响,裹附砂浆造成了再生骨料复杂多孔的表面结构,从而使得再生骨料具有独特的吸水特性。同时由于不同破碎工艺对旧水泥混凝土的破碎和砂浆处理程度不同,证明了破碎工艺的重要性。

浅谈大板干粒抛工艺和生产缺陷处理

2020年大板市场迅速爆发,大板干粒抛不负众望一跃而起,成为当下最有竞争力的产品之一。现如今大板无论是在装饰性、应用性还是市场占有率等方面,都还处在上升期,仍有巨大的空间等待开发。陶瓷大板相比其他瓷砖产品,具有规格大、硬度大、性能稳定、安全牢固、环保健康、装饰性强等特性。陶瓷大板主要用于建筑空间墙地面装饰,衣柜饰面板、橱柜面板等家具装饰以及门饰面板。而大板干粒抛的生产工艺也是种类繁多,在生产过程中的质量控制也是一大难点,各种缺陷一旦控制不好,都会造成重大的质量事故。本文主要阐述大板干粒抛的工艺和在生产中的缺陷原因及改善措施。

板料塑性弯曲回弹计算方法

分析板料在拉力下弯曲的应力状态，提出了用材料力学中的能量法计算回弹角的方法，并与采用卸载定理求得的回弹角做了比较。

电解槽面查烧板提升装置设计应用

为解决钢电解作业中因处理电解槽面查烧板而占用专用吊车、影响槽作业率的问题,文章设计一种安装在槽面上的可行走提升装置,通过导向轮机构将钢丝绳的水平运动转变为垂直运动,达到将阴极铜板提升和下降的目的。该电解槽面查烧板提升装置的悬臂可实现180°旋转,设备整体供电摒弃常规滑线供电或轨道供电,并且采用结缘方式设计吊具结构,该装置可解决阴极铜烧板处理不及时的生产瓶颈,对冶金企业的设备改造有参考价值。

Effects of cubic carbides and La additions on WC grain morphology,hardness and toughness of WC-Co alloys

Effects of Cr3C2,VC and La2O3 additions on the WC grain morphology,hardness and toughness of WC-10Co alloys were investigated.To intensify the grain growth driving force,nano W and nano C,instead of the conventionally used WC,were used as the starting materials.To obtain a three-dimensional WC grain morphology,the natural sinter skins of the alloys were observed directly by scanning electron microscopy.It is shown that the additions have a strong ability in regulating the WC grain morphological and grain size distribution characteristics and the combinations of hardness and toughness.Due to the formation of regular and homogeneous triangular platelet WC grains,WC-10Co-0.6Cr3C2-0.06La2O3 alloy shows an excellent combination of hardness and toughness.The morphological regulation mechanism,the relationship between the WC grain morphology and the properties were discussed.

Flexible die drawing of magnesium alloy sheet by superimposing ultrasonic vibration

Combining solid granule medium forming technology with ultrasonic vibration plastic forming technology, ultrasonic vibration granule medium forming （UGMF） technology was proposed. To reveal the effect of ultrasonic vibration on flexible-die deep drawing, an ultrasonic vibration with a frequency of 20 kHz and a maximum output of 1.5 kW was on the solid granule medium deep drawing of AZ31B magnesium alloy sheet. The results revealed that ultrasonic vibration promotes the pressure transmission performance of the granule medium and the formability of the sheet. The forming load declines with the ultrasonic amplitude during the drawing process as a result of the combined influence of the ＂surface effect＂ and the ＂softening＂ of the ＂volume effect＂.

Flexible-die forming process with solid granule medium on sheet metal

Certain non-metallic granules （NMG） were selected as the research object. It was proposed to conduct the volume compression experiments as well as those on the NMG physical properties at high stress levels. Then, not only the volume compression ratio curve but also the extended Drucker-Prager linear model were obtained. In addition, through the friction strength tests, parameters of the Mohr-Coulomb model were gained, which proved in basic agreement with those of the extended Drucker-Prager linear model. Additionally, curves of the friction coefficients between the NMG and the sheet metal trader different pressures were also obtained. Based on the material performance experiments, numerical analysis in respect of flexible-die forming process with solid granule medium （SGM） was conducted. The die and device for experiments of solid granule medium forming （SGMF） on sheet metal were designed and manufactured. Typical parabolic parts were successfully trial-produced. The tests and simulation results show that the sheet formability is significantly improved for the extraordinary friction performance during interaction between the SGM and the sheet metal surface. The process control and die structure are simple, and the shaped work-pieces enjoy many advantages, such as satisfactory surface quality and favorable die fitability, which offers a brand-new method and means for processing and preparation of sheet metals.

Discrete element and finite element coupling simulation and experiment of hot granule medium pressure forming

The granule medium of discreteness is supposed to be continuous（Drucker-Prager model） in the existing finite element simulation analysis on the hot granule medium pressure forming（HGMF） process, so the granule medium may produce tensile stress in the process of pressure-transferring and flowing, which does not coincide with the reality. The analysis method, discrete element and finite element（DE-FE） coupling simulation, is proposed to solve the problem. The material parameters of simulation model are obtained by the pressure-transfer performance test of granule medium and the hot uniaxial tensile test of sheet metal. The DE-FE coupling simulation platform is established by adopting Visual Basic language. The features in the process that AA7075-T6 conical parts are formed by the HGMF process are analyzed and verified by the process test. The studies show that the results of DE-FE coupling simulation coincide well with the test results, which provides a new analysis method to solve the mechanics problem in the coupling of discrete and continuum.

Improvement of mechanical properties of cold-rolled commercially pure Ti sheet by high density electropulsing

Specimens cut from the cold-rolled commercially pure （CP） Ti sheet were treated by high density electropulsing （the maximum current density 7.22 kA/mm2, pulse period 110 las）. The deformation behaviors of the CP Ti specimens at different states were determined by the uniaxial tensile test. The microstructure morphologies were observed by the optical microscopy. The results show that the electropulsing induced formation of f＇me equal-axial grains and lamellar microstructures, which leads to the strength of the electropulsed CP Ti higher than that of the conventional annealed CP Ti. After electropulsing, the tensile strength and yield strength are increased by 100 MPa. And the electropulsed CP Ti has a good plasticity. The experimental results demonstrate that the electropulsing provides an effective approach to enhance the strength of cold-rolled CP Ti sheet and retain the required high ductility.

坚持承包经营责任制 不断提高经济效益——从大邑糖厂的变化看深化企业的内部改革

大邑糖厂在近几年来实行多种经济责任制形式,实施多层次经营以及完善经营承包责任制等方面的改革实践中,作出了大胆的探索和有益的尝试。通过改革,给大邑糖厂带来了生机和活力,经济效益和社会效益不断提高。改革的实践证明:企业只有在深化内部改革中,不断完善经营责任制和加强经营管理,克服平均主义倾向和吃大锅饭的弊端,充分调动职工不积极性、主动性和创造性,才能使企业注入生机,充满活力,增强后劲,不断提高经济效益。