销钉式冷喂料挤出机供胶系统在轮胎钢丝帘布压延中的应用

介绍销钉式冷喂料挤出机在钢丝帘布压延中的应用。Φ200 mm销钉式冷喂料挤出机主要由机头、机筒、喂料段、螺杆、主机减速箱、润滑系统、温度控制系统和电气控制系统组成。当螺杆转速在15~25 r·min-1时,螺杆转速与排胶量线性关系较好。与开炼机供胶系统相比,销钉式冷喂料挤出机供胶系统供给的胶料门尼粘度降幅明显减小,炭黑分散性能较好。用销钉式冷喂料挤出机供胶系统代替开炼机供胶系统,钢丝帘布胶加工性能和物理性能大幅提升,生产能耗和制造成本降低。     

用销钉式冷喂料挤出机为压延机供胶

近年来,在引进的压延机中多数配用冷喂料挤出机作为其供胶系统,这是在销钉式冷喂料挤出机的出现才成为现实的。因为,该机螺杆直径有90～300mm,出胶量800～9000kg/h,完全能满足轮胎纤维帘布或钢丝帘布压延之需。该供胶系统具有以下优点:1能耗低,操作人员少,自动化程度高。?..     

新产品园地

销钉式冷喂料橡胶挤出机及双复合销钉式冷喂科挤出机组沈阳橡胶机械厂的销钉式冷喂料挤出机系引进原西德的先进技术,可冷喂料挤制胎面、内胎和其它断面的橡胶制品,且可为压延机等供胶用。规格有GE200KS×12D、GE150KS×16D、GE200K8     

内蒙古富特橡塑机械有限公司生产的销钉冷喂料挤出机系列产品已列入自治区火炬计划

近年来,内蒙古富特橡塑机械有限公司在消化引进国外先进技术的基础上,开发、生产了６０、９０、１２０、１５０、２００、２５０销钉冷喂料挤出机,规格齐全,形成了产品系列化。销钉冷喂料挤出机主要用于子午线轮胎、斜交胎的胎面挤出,各种规格的型胶挤出,三角胶挤出,压延机供胶,子午胎气密层压延供胶等;同时可用于各种规格的高、中、低压胶管挤出,胶管包胶,各种型胶的挤出,防水卷材、胶带覆盖胶的挤出,以及各种橡胶制品的挤出。内蒙古富特橡塑机械有限公司生产的销钉冷喂料挤出机由于设计先进、质量可靠,可替代进…     

国内消息

国内消息用挤出法生产轮胎型胶青岛第二橡胶厂为了适应轮胎发展的需要，对原有的子午线轮胎半成品生产设备进行了改造。三角胶、外包布垫胶、胎圈护胶等型胶的生产方式由过去的压延机压出改为用ｄｉ６０销钉式冷喂料挤出机挤出。为了解决改造后胶料中沙粒等杂质影响型胶质...     

销钉式冷喂料挤出机及其应用范围

销钉式冷喂料挤出机在我国橡胶行业中已经得到了广泛的应用。许多对挤出制品质量要求较高的场合均采用销钉式冷喂料挤出机，如子午胎生产中的胎面挤出及各种型胶的挤出等。     

复合销钉式冷喂料挤出机在轮胎生产中的应用

本文介绍了安徽佳通轮胎公司使用进口复合销钉式冷喂料挤出机的情况，对此机的工艺特点，基本结构及工艺参数做了概述，并与热喂料挤出机进行了对比，从而总结出冷喂料挤出机的使用优势。     

进口三复合销钉式冷喂料挤出机性能分析

通过对银川佳通进口三复合销钉式冷喂料挤出机的结构、性能及经济性分析，指出进口的三复合销钉式冷喂料挤出机综合性能比较优越，但价格较为昂贵，适合于子午线轮胎生产过程中胎面、胎侧的连续化生产。     

赴西德考察摘要

一九八五年二月二日至三月三日。桂林轮胎厂赴西德披术培训团对贝尔斯托夫公司等几个单位进行了考察。现将贝尔斯托夫公司销钉式冷喂料挤出机和复合胎面挤出机的考察材料整理介绍如下,以供国内研究和开发这两项产品时参考和借鉴。一、销钉式冷喂料挤出机在我国,对冷喂料挤出机的开发已进行多年了,但离普遍使用还尚需时日。而在国际上,由于冷喂料挤出机具有优异的性能,早已被橡胶行业所广为采用。据西德贝尔斯托夫公司称,他们所生产的挤出机的95％是冷喂料挤出机,其中尤以销钉式冷喂料挤出机具有突出优点并为广大用户所称道,销钉式冷喂料挤出机的优越性在于:     

销钉传递式冷喂料挤出机

介绍了市场上常用的销钉及传递式冷喂料挤出机的结构,根据这些挤出机的结构特点设计出销钉传递式冷喂料挤出机,并且可以在原有挤出机的基础上改造成新型挤出机,销钉传递式冷喂料挤出机的性能及优点突出。     

橡胶冷喂料挤出机喂料装置的性能分析

对橡胶冷喂料加料装置进行了性能分析，通过对自由喂料，旁压辊喂料和螺旋啮合喂料的分析，得出其进料的必要条件及加料胶条的型体要求。     

Dispersion of feed spray in a new type of FCC feed injection scheme

A new type of FCC feed injection scheme in which the feed is injected downward into the riser to realize a countercurrent contact of feed oil with catalyst particles is put forward. The dispersion of feed spray and flow behaviors of particles in the new type of feed injection scheme are investigated via a large scale cold‐riser model. Experimental results show that the proposed scheme provides a better contact of feed oil with catalyst particles. Furthermore, the centerline equations of both the feed main flow and the secondary flow in the riser are given by introducing a density correction coefficient. The momentum‐ratio of the secondary flow to the main flow is then obtained and the trajectory of the feed main jets as well as the secondary flow is estimated by the centerline equation. The computed results give a reasonable agreement with the experimental data. © 2015 American Institute of Chemical Engineers AIChE J, 62: 46–61, 2016     

丙烷预冷混合制冷剂液化工艺原料气敏感性分析

液化天然气液化后的体积仅为原体积的1/625,十分有利于运输和储存。丙烷预冷混合制冷剂液化工艺是目前最常用的天然气液化工艺,该工艺结合了级联式液化流程与混合制冷剂液化流程的优点,既高效又简单,目前世界上80%以上的基本负荷型天然气液化装置采用了此流程。由于实际情况中原料气的入口压力、温度、组分均存在变化的可能,需要针对工艺的原料气敏感性进行动态仿真分析。通过分别添加原料气压力、温度、组分的扰动,得到了各个工艺系统的动态响应。结果表明:当丙烷预冷混合制冷剂液化工艺分别存在原料气压力、温度、组分扰动时,各个系统均能在一段时间后重新恢复稳定,稳定时间为20~250 min。验证了丙烷预冷混合制冷剂液化工艺在原料气入口条件扰动时的稳定性和可靠性。     

The adjustable grooved feed extruder

Grooved feed extruders have been around since about the 1960s. These extruders offer considerable advantages over conventional extruders, such as higher throughput, better stability, and the ability to process very high molecular weight polymers. There are some important disadvantages as well, for instance, higher motor load, wear is more likely, high pressures in the grooved region, and the screw design has to be adapted. The disadvantages of the grooved feed extruder disappear when the grooved feed extruder is made with a mechanism that allows adjustment of the groove depth. Grooved feed extruders have now been developed that incorporate an adjustment mechanism that allows the depth of the grooves to be changed, during actual operation, from zero to full depth. Chris Rauwendaal and Janusz Sikora explain.     

聚合入料温度的调节

在悬浮法PVC生产过程中,入料温度的调节非常重要。通过改进入水调节回路,入料过程温度偏差明显缩小,而且不需要手动干预,聚合温度稳定,聚合过程中分散体系运行平稳,产品质量稳定。     

化妆品原料的选择

介绍了化妆品中使用的原料。化妆品乳状液的油相可以是天然的，也可以是合成的油类、植物和动物脂类以及蜡类，还包括乳油、硅氧烷和酯类，这类原料可以被称作疏水性原料，或者是亲脂组分。并对这些原料进行了概述。     

Processing for nonruminant feed markets

Processing methods can be controlled to provide a cottonseed meal that is improved nutritionally and substantially free from toxic principles. In so doing, cottonseed meal can be fed beneficially to cattle, poultry, swine, and even trout. It is, therefore, possible to feed cottonseed meal to animals and poultry up to 10% of their dietary levels without harmful effects like minimizing their growth, reducing their bone marrow, harming their spleens, or discoloring their egg yolks. It is, however, necessary to prove to those who might use the meal that the feeding is economically sound and as productive as other meals.