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roll material     
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  卷材
     Experiment Study on Cavitation Resistance and Abrasion Resistance of JS-18(CPE) Waterproofing Roll Material
     JS—18(CPE)防水卷材抗空蚀抗磨蚀性能的试验研究
短句来源
     CONSTRUCTION TECHNOLOGY OF PVC WATERPROOF ROLL MATERIAL IN BASEMENT
     地下室PVC防水卷材施工技术
短句来源
     APPLICATION OF PVC WATERPROOF ROLL MATERIAL TO EXTERNAL WATERPROOF OF FOUNDATION STRUCTURE
     PVC防水卷材在基础工程结构外防水中的应用
短句来源
     Application of APP Modified Asphalt Waterproofing Roll Material in Water Prevention of Bridge
     APP改性沥青防水卷材在桥面防水中的应用
短句来源
     Some technologies were adopted in the construction of foundation waterproof works of the National Conference Center Project,and waterproof materials involved mainly included SBS waterproof roll material,cement-base crystallized waterproof paint,polymer cement waterproof mortar,ploy-sulfur sealing paste,slow-expansion rubber strip,rubber water-stop,water-stop steel sheet and etc.
     国家会议中心工程基础防水施工中采用了多项技术,涉及到众多防水材料,主要包括SBS防水卷材、水泥基渗透结晶型防水涂料、聚合物水泥防水砂浆、聚硫密封膏、缓膨型遇水膨胀橡胶条、橡胶止水带、止水钢板等。
短句来源
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  轧辊材料
     Cr12MoV steel can be widely used as a kind of roll material for tube-welding.
     Cr12MoV钢是一种值得推广的焊管轧辊材料
短句来源
     The Development of the Cold Work Roll Material and Its Manufacturing Technique
     冷轧辊材料及制造技术的发展
短句来源
     Present status and development trends of roll material and its heat treatments
     轧辊材料及其热处理工艺发展的现状与趋势
短句来源
     Study on Fracture Toughness of Nb-V Ductile Iron as a Roll Material
     Nb-V 球铁作为轧辊材料及其断裂韧性研究
短句来源
     A new type of roll material alloyed by reducing carbonand increasing silicon is investigated to cave the problem of highchen content. brittle hardening layer of mll and lOw availability in9Cr2MoV foeing cold roll steel.
     针对9Cr2MoV等冷轧工作辊的碳质量分数高,轧辊淬硬层脆,且淬硬层利用率低的缺点,研制出降碳、硅合金化的新型轧辊材料
短句来源
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  轧辊材质
     Development of the Roll Material of the Hot Rolled Stainless Steel Strip
     不锈热轧带钢轧辊材质的发展
短句来源
     The following chapter introduces the status of the exis tintg roll material and the effect of using high-speed steel roll.
     介绍了现用轧辊材质的状况及使用高速钢的轧辊的作用和效果。
短句来源
     Introduced in tile paper is the improvement of roll material and profile of the Assel mill incorporated with the φ60mm seamless steel tube production line located in Desheng Seamless of both the roll and the roll bearing.
     介绍了大连得胜无缝钢管厂φ60mm轧管机组阿塞尔轧管机轧辊材质与辊型的改进情况。 使用改进后的轧辊,增强了辊面的抗热疲劳性能,提高了产品的表面质量,降低了轧制压力,延长了轧辊与轧辊轴承的使用寿命。
短句来源
     Through optimizing pass design and billet structure,and improving roll material and looper,the material yield is greatly increased in Jigang.
     济钢第一小型厂通过采取优化孔型系统、成品孔型设计、坯料结构以及改进轧辊材质和活套器等一系列措施,取得了显著的综合实施效果。
短句来源
     In view of the problems of limiting productivity for Φ12,Φ14mm ribbed bar of semi-continuous bar rolling line of Qingdao Iron and Steel Co. ,the splitting rolling technology was applied which designed by themselves. Meanwhile, the roll material and the type of guiding device were optimally selected.
     针对青钢半连轧棒材生产线生产Φ12、Φ14mm带肋钢筋时制约生产力的问题 ,采用了自行设计的切分轧制方案 ,并对轧辊材质、导卫装置型式进行优选 ,使生产效率明显提高 ,合格率达 98 82 %。
短句来源
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  辊材
     The influence of heat transfer coefficient (k) on solidifying field was calculated and discussed through simulation,as well as the influence of the roll material used on temperature field.
     通过模拟计算分析了传热系数h对凝固场的影响,辊材对温度场的影响,确定临界速度。
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      roll material
    The roll surface on which black oxide layers form is composed mainly of Fe3O4, which is caused by the oxidation of the roll material itself.
          
    Although spalling can be a culmination of roll material quality and/or mill abuse, the microstructure of a broken roll can often unveil intrinsic inadequacies in roll material quality that possibly accentuate failure.
          
    The transformation of carbides with austenization time of a high speed steel (HSS) roll material, manufactured by a centrifugal casting method, has been studied.
          
    The roll material, containing a small amount of intercellular carbides and lath-type tempered martensitic matrix, had excellent fracture toughness, since carbides were well spaced.
          
    Compositions of thermal insulation gunited coatings of mullite-silica roll material and mixtures of it with a refractory filler, chamotte powder, have been developed.
          
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    The key to successful cross rolling is to understand fully the distribution of deformation and the mechanism of crack formation at the centre of the rolled material as well as the optimum parameters for the technological process. With these points in mind, the authors carried out investigations by means of microscopic examinations and hardness tests on the distribution of deformation and the mechanism of crack formation at the centre of certain steel specimens at various temperatures, various rates...

    The key to successful cross rolling is to understand fully the distribution of deformation and the mechanism of crack formation at the centre of the rolled material as well as the optimum parameters for the technological process. With these points in mind, the authors carried out investigations by means of microscopic examinations and hardness tests on the distribution of deformation and the mechanism of crack formation at the centre of certain steel specimens at various temperatures, various rates of deformation, different ratios between the length of the plastic zone and the specimen diameters as well as at different lengths of material at both ends of the plastic zone.As the deformation of metals in cross rolling is in many ways similar to that in cross forging, the authors carried out experiments on the cross forging of aluminium and lead which had been marked with concentric circles at the ends in a 35-ton mechanical press at room temperatures, and then compared the results thus obtained with those in the cross rolling of carbon and alloy steels.The results of these experiments show that:(1) With only one strike of the press in cross forging, the deformation is greatest at the surface and diminishes towards the centre of the specimen. When reduction is small, only elastic deformation occurs at the centre.(2) With several strikes of the press on rotating specimens, the deformation at the surface and in the centre is greater than that in the intermediate zone. When reduction is very small, plastic deformation also does not penetrate into the centre.(3) Similar to cross forging, the deformation of metal in cross rolling is also greatest at the surface, less at the centre and least in the intermediate zone. This distribution of deformation remains practically unchanged in different metals and various rolling temperatures as well as under other testing conditions mentioned above. Under conditions of the present experiments, when reduction is small, the deformation at the centre may be only elastic. In this case, the distribution of deformation is similar to that with only one strike of the press in cross forging.In cross rolling, the greater the reduction, the higher the rolling temperature, the higher the rate of deformation, the greater the ratio between the length of the plastic zone and the specimen diameter, and the shorter the length of the material on either side of the plastic zone, the greater is the tendency for crack formation at the centre. Alloy steels seem less liable to crack formation than carbon steels.

    在200—300毫米輥径的横軋机上于不同溫度、速度、变形程度、变形区长度与直径之比以及外端等条件下,用金相法和硬度法对各鋼种的圓棒的变形分布和中心破裂进行了研究。在冲床上用端面画有同心圓的鋁棒和鉛棒进行了常溫的旋轉橫鍛試驗,以了解横鍛横軋时金属的变形分布。試驗結果表明: 1.一次横鍛时,表面层的变形最大,越靠中心变形愈小。当压縮率不大时,中心处可能只发生弹性变形。2.旋轉橫鍛时,表面层和中心区的塑性变形較大,过渡区的变形最小。当变形率很小时,塑性变形亦可能不致于深入到中心区。3.横軋时金属的变形規律与旋轉橫鍛时相似,但在压縮很小时,断面中心只发生弹性变形。4.横軋时,軋制溫度、軋制速度增高,压縮率及变形长度与直径比越大,外端越小,中心破裂愈易产生。

    This paper presents the results of our experiments and production practice in asynchronous rolling since 1973, which showed the adoption of "S" asynchronous rolling is effective in the temper rolling of thin strip. The technological conditions and features of this rolling method are described. Approximate mathematical expressions for the parameters of tension, pressure etc. are presented. The causes leading to stable rolling operation are analysed using the characferisfic curves...

    This paper presents the results of our experiments and production practice in asynchronous rolling since 1973, which showed the adoption of "S" asynchronous rolling is effective in the temper rolling of thin strip. The technological conditions and features of this rolling method are described. Approximate mathematical expressions for the parameters of tension, pressure etc. are presented. The causes leading to stable rolling operation are analysed using the characferisfic curves of elastic and plastic deformation of rolled material and the principle of static friction. The conditions and results of our experi-ments and productive application are outlined. This method of rolling is considered to be superior to usual temper rolling in flattening capacity, demand of manipulative skill and product quality.

    异步轧制是近两年来引起人们注意的一项轧制新工艺.从1973年以来的实验和生产使用情况来看,求用基于"HB"法轧制思想的"S"异步轧制法对薄带钢的平整生产来说是有成效的.本文阐述了该法的工艺条件和特点;提出关于张力、压力等参数的近似表达式,用轧制的弹塑性变形曲线图和静摩擦力作用原理.分析了该法能稳定轧制的原因;并将实验和生产中的应用情况和结果作了简要介绍,认为平整能力、操作要求、产品质量等方面都比普通平整法优越和具有特点.

    Asynchronous One-Stand Tandem Mill (A.O.S.T.M) is a new type of cold reduction tandem mill. It can continuously and stably roll strips in several passes with tension on a single stand, just as on a conventional tandem mill. It has been observed that in asynchronous rolling, the speed of the strip is controlled by the slower roll when a strip was rolled between two rolls and when the difference of their peripheral speed reaches a given value. A.O.S.T.M. was developed on this principle....

    Asynchronous One-Stand Tandem Mill (A.O.S.T.M) is a new type of cold reduction tandem mill. It can continuously and stably roll strips in several passes with tension on a single stand, just as on a conventional tandem mill. It has been observed that in asynchronous rolling, the speed of the strip is controlled by the slower roll when a strip was rolled between two rolls and when the difference of their peripheral speed reaches a given value. A.O.S.T.M. was developed on this principle. During the last seventeen years, several experimental mills have been built and tested. A five high three-pass A.O.S.T.M. was converted from a four high mill and put into operation in 1968. A new pilot five high three-pass A.O.S.T.M. with roll body 350 mm in length has recently been put into production. From the experience gained with asynchronous rolling and A.O.S.T.M. it is found that besides the simple structure of the mill, this kind of rolling process posseses several special advantages, namely lower rolling pressure, high rate of reduction, flat product shape and precise gage obtainable with normal operation and suitable devices. It is espeiallyadvantageous in the fabrication of hard-to-roll materials and thin gage products.

    异步单机连轧机是一种新型冷轧连续式轧机,它可以在一台轧机内同一般冷轧连续式扎机一样,在张力下稳定地对带钢进行多道次连续轧制,从1962年开始,我们在研究异步轧制中发现,当轧件在两个圆周速度不同并达一定差值的轧辊中轧制时,轧件的速度主要受慢速辊控制,单机连轧即由这一原理发展而来.十七年来我们曾制作了几台试验轧机进行试验.1968年曾有一台用四辊旧轧机改装的可以连轧三道的五辊单机连轧机投入试生产.通过研究和生产在异步轧制和单机连轧机上积累了一定经验,事实证明,异步单机连轧机除了设备简单外,它的主要优点是压力低、变形大、产品平直、在正常操作和适当措施下可以获得公差良好的产品,同时,它也特别适合于生产难轧材料和薄规格产品,这篇报告报导了我们的研究和生产实践.

     
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