废聚苯乙烯泡沫塑料抛光磨石的研制

将废聚苯乙烯(PS)泡沫塑料与酚醛树脂(PF)共混制备了一种磨石用结合剂,然后结合氧化铝填料和磨料研制了一种抛光磨石,对结合剂的配方和氧化铝填料的用量进行了优化实验.结果表明,当废PS泡沫塑料/PF/甲苯/三氯甲烷的质量比为105/62/48/3时,抛光磨石的性能最优;氧化铝的最佳质量分数为8％.在此基础上,选用粒径约为180 μm的沙粒作为磨料,并合理搭配磨块的形状,可获得具有较好抛光性能的环保型低成本抛光磨石.     

陶瓷金刚石砂轮结合剂的探讨与研制

陶瓷结合剂金刚石砂轮具有加工效率高，耐用度高，易于修整等优点。本文探讨了陶瓷金刚石砂轮结合剂的原料、化学组成、制造方法及陶瓷金刚石砂轮的烧成条件。试验结果表明：不同的结合剂原料影响结合剂的耐火度及对金刚石磨料的把持力，在埋砂条件下，750℃烧成对金刚石的破坏很小，可以用高温冶炼法生产新型陶瓷结合剂。     

聚氨酯微孔抛光磨具

概述抛光磨具的类型、国内外发展情况和微孔聚氨酯的优点,着重介绍微孔聚氨酯抛光磨具的类型、组成、生产方法及使用中的影响因素,研究了微孔聚氨酯抛光磨具的性能。     

如何选定合适的抛光和喷镀方案

获得了模具加工合同后，你对设计、尺寸和公差分析研究，然后你认为自己掌握了所有情况，作好了开始行动的准备。但真是这样的吗?     

深色漆面一步抛光法

深色漆面在点打磨过后的抛光作业很难消除抛光影的问题,随后的上光工艺增加了大量的工时、材料、人力等成本,同时若抛光影处理不到位会引发客户的感知和抱怨.针对车身深色漆面深入探讨了抛光影的形成与一步抛光法实现的可能性.     

金属管件内表面的电化学抛光

介绍了电化学抛光的基本原理和管件内表面电化学抛光的移动式阴极结构，对酸性和中性抛光电解液的优、缺点及其应用范围进行了分析、比较，给出了几种应用范围比较广泛的电化学抛光的电解液配方和相应的加工工艺参数。     

铝及其合金无黄烟抛光工艺的研究

铝及其合金的化学抛光,通常采用三酸工艺,但是由于其中含有硝酸或硝酸盐,在抛光过程中有大量黄烟逸出,氮氧化物的污染十分严重。为了解决环境污染问题,本文试验研究了WXP体系的化学抛光工艺。采用的抛光溶液配方为:硫酸(化学纯1.84)20％(体积),磷酸(工业级1.71)80％(体积),WXP添加剂2mL/L。温度为100℃,时间8秒。抛光效果可达到原来硝酸工艺的90％左右。WXP在此处用作发光剂且有一定的抑制酸雾的作用。由于不用硝酸及硝酸盐,故而彻底消除了氮氧化物的污染。为了求得最佳的操作条件及配方,本文进行了各种条件试验及腐蚀速度试验。最后通过生产实践得出结论:为改善环境采用本工艺是合适的。     

镜面抛光技术的进展

在机械加工过程中,抛光加工技术作为末端加工工艺,可以明显改善机件表面的粗糙度及装饰效果。机件的表面质量直接影响整机设备的综合使用性能、精度保持性和使用寿命。不同的抛光加工工艺,获得的表面质量各有不同。通过对机械抛光技术、电化学抛光技术和超声波抛光技术的研究,阐述了抛光加工技术在制造业中的作用和地位,同时分析了抛光加工技术的发展趋势和存在的问题,     

青铜金刚石砂轮烧结模具生产和设计的若干问题探讨

文章通过对青铜金刚石砂轮企业面临的短时间交货、市场竞争激烈和降低模具使用成本等问题的分析,结合实践从砂轮模具生产和设计角度提出了对这些问题的解决办法.另外,文中基于外热式加压烧结制作青铜金刚石砂轮的模具生产、设计及管理等多方面的具体解决办法和相关要求作出了详细阐述.     

高速砂轮的研究现状

高速磨削是实现对难加工材料的高性能加工的一种很有效方法.研究表明增加砂轮线速度可以降低磨削力、工件的表面粗糙度和砂轮的磨损,或者可以提高生产效率.超硬磨料砂轮具有优异的性能,因而在高速磨削中有着广泛的应用.文章总结了高速砂轮设计和制造的有关研究情况,介绍了超硬磨料砂轮在高速磨削难加工材料方面的研究状况,最后还分析了高速砂轮存在的问题.     

金刚石砂轮磨削性能的检测方法

介绍了一种科学的金刚石砂轮磨削性能实验检测方法,并对检测过程进行了详细的说明,为金刚石砂轮工艺配方研究者和生产商提供了一种可行的砂轮磨削性能检测方法,破解了长期困扰砂轮配方工艺研究者的——砂轮的耐磨性和锋利度无法量化测定的难题.     

Increasing the quality of diamond wheels for manual grinding of commercial and art glass

It was shown that use of AS32–AS50 diamond powders (instead of AS6–AS15 powders) combined with a new metal bond with hardness of HB 75–85 (in comparison to M2-01 binder) allows prolonging the lifetime of wheels by 1.5–2 times in grinding articles made of commercial and art glass, reducing the specific diamond consumption, and increasing the cutability of the instrument.     

耐热酚醛树脂金刚石砂轮的磨削性能研究

文章研究了耐热酚醛树脂和"2123"酚醛树脂作为金刚石砂轮结合剂的耐磨情况。磨削试验结果表明:耐热酚醛树脂粉制作的金刚石砂轮具有较好的耐磨性,所加工工件的表面质量优良。通过热性能、力学性能测试和磨削表面分析,找出了两种树脂砂轮耐磨性和磨削效率存在差异的原因,树脂耐热温度的高低、韧性直接影响砂轮的耐磨性;树脂的硬度对砂轮的磨削效率有影响。     

Research on laser preparation and grinding performance of hydrophilic structured grinding wheels

In order to solve the problems of workpiece damage and grinding wheel clogging when grinding difficult-to-cut materials such as alumina ceramics, organisms with regular hexagonal structures distributed on the body surface and with strong hydrophilicity and high anti-wear functions were used as biomimetic objects for the first time, and the preparation process optimization, structure size design and grinding performance evaluation of hydrophilic structured bronze-bonded diamond grinding wheels were explored in this paper. The influence of the preparation process parameters on the micro-topography and the dimensional accuracy of the structure on the surface of the grinding wheel was revealed, and a new laser structuring process based on the coordinated control of focus position and scanning times was proposed, which could efficiently prepare regular hexagonal structures with a small wall inclination angle and a depth of several millimeters on the surface of the grinding wheel. It was the first to clarify the influence of sub-millimeter-scale structure size on the contact angle of grinding fluid droplet on the surface of the grinding wheel and the surface hydrophilicity of the grinding wheel. Compared with that of the non-structured grinding wheel, the hydrophilicity of the structured grinding wheel was significantly improved, and its surface hydrophilicity increased with the increase of the structure spacing and depth, but had little correlation with the structure side length. The grinding performance of hydrophilic structured grinding wheels and non-structured grinding wheels was evaluated under extreme working conditions. Under the condition of grinding depth of 50 μm, 100 μm and 200 μm, compared with that of the non-structured grinding wheel, the peak grinding temperature of the structured grinding wheel was reduced by 18.0%, 30.4% and 15.2%, respectively, and the surface damage depth of the alumina ceramic after grinding by the structured grinding wheel was reduced by 53.7%, 46.8% and 24.3%, respectively. The hydrophilic structured grinding wheel can enhance the storage and transportation capacity of grinding fluid/chips, effectively relieve the clogging and dullness of the grinding wheel, and significantly reduce the high temperature and damage of grinding. In the next step, we will try to apply this type of grinding wheel to form grinding, in order to provide a reliable solution for suppressing form grinding damage of difficult-to-cut materials.     

陶瓷结合剂cBN高速砂轮受力分析

陶瓷结合剂cBN砂轮工作速度一般在80m/s以上,为了保证砂轮的安全运行,砂轮本身必须具备一定的强度.文章分别探讨了陶瓷基体和铝合金基体的cBN砂轮,并进行了空转状态下的受力分析,分析结果表明,陶瓷基体在80m/s的工作条件下,很难满足要求,铝合金基体能有效提高砂轮的工作速度,降低对工作层的强度要求.