螺纹锁固厌氧胶对紧固件螺纹摩擦系数和扭矩系数的影响

对使用螺纹锁固厌氧胶装配的紧固件的螺纹摩擦系数和扭矩系数进行测试和分析,结果表明,涂螺纹锁固厌氧胶后的紧固件在上紧时,螺纹摩擦系数和扭矩系数都会出现不同程度的上升,无润滑型螺纹锁固厌氧胶上升幅度较大,润滑型螺纹锁固厌氧胶较小;但螺纹摩擦系数和扭矩系数的离散度会大幅降低。     

容油型螺纹锁固厌氧胶在发动机装配中的应用

研究了常规螺纹锁固厌氧胶与容油型螺纹锁固厌氧胶的性能差异,选择容油型厌氧胶来解决常规厌氧胶在发动机装配过程中对油面粘接差的缺点,并对容油型厌氧胶在发动机装配中的可靠性进行验证。研究结果表明,容油型厌氧胶在发动机油面装配中工艺简单,粘接可靠性良好。     

浅述厌氧胶螺纹锁固防松工艺

浅述厌氧胶螺纹锁固防松工艺孙康（江西拖拉机厂，南昌市．３３０００２）一、前言厌氧胶密封粘接因其工艺简单，适应面广，效果显著而广泛地应用于机械行业。现已成为螺纹锁固和密封的重要手段。厌氧胶固化时，能在螺纹缝隙形成一热固性胶层，使螺纹面啮合率达百分之百而...     

螺纹锁固用厌氧胶的评价指标和应用特点

介绍了螺纹锁固用厌氧胶的密封原理,总结了厌氧胶的常用评价指标(扭矩、固化速率、耐热温度和黏度等)及现有厌氧胶的种类与性能(包括乐泰厌氧胶、GY系列厌氧胶、J系列厌氧胶和其他厌氧胶产品),并讨论了厌氧胶的清除技术(包括螺纹件的拆卸、残余厌氧胶的清除等)。最后展望了厌氧胶的发展方向。     

一种通用型厌氧胶的制备及性能研究

采用复合厌氧单体,加入增韧剂制备了一种通用型多功能厌氧胶,研究了单体和增韧剂对厌氧胶性能的影响,考察了该胶的固化性能、粘接性能、耐介质性能和耐热老化性能。研究表明制备的通用型厌氧胶对多种金属材质以及油面试件具有良好的粘接性能,耐环境老化性能优异,并在150℃下长期使用,可满足螺纹锁固、圆柱固持和平面粘接等多种用途的需要。     

厌氧胶耐扭转疲劳性能的研究

以天山公司螺纹锁固胶可赛新~?系列产品为例,测试了厌氧胶的耐扭转疲劳性能,模拟了厌氧胶实际使用过程中因受到扭转力而导致锁紧失效现象,进而为客户选择合适的胶粘剂提供依据。     

一种环保型螺纹锁固厌氧胶的研究及制备

研究了几种不同的引发剂、促进剂和稳定剂对螺纹锁固厌氧胶的性能的影响,包括:固化速度、热贮稳定性、破坏扭矩、平均拆卸扭矩。考虑到生产环境和日趋高标准的环保要求,选择了过氧化月桂酰作为螺纹锁固厌氧胶的引发剂,苯肼作为促进剂,对苯二酚作为稳定剂。试验结果表明,当过氧化月桂酰质量分数为3.0%,苯肼质量分数为3.0%,对苯二酚质量分数为0.04%时,厌氧胶的综合性能达到了最佳值。     

新一代螺纹锁固厌氧胶防松性能的研究

对螺纹锁固厌氧胶7243和7263的防松性按照GB/T 10431—2008《紧固件横向振动试验方法》标准进行了测试并与空白样作了对比分析。结果表明,这2种胶的防松性能十分优异,涂胶固化后的紧固件在横向振动试验过程中的夹紧力保持率在95%以上,另外,螺纹锁固胶的扭矩强度和防松性之间没有直接对应关系。     

乐泰厌氧胶在设备修理中的应用

中国烟台引进美国LOCTITE厌氧胶技术生产的乐泰厌氧胶,经我们在设备修理中多次使用,收到较好的效果。乐泰厌氧胶种类很多,乐泰(中国)厌氧胶按其作用不同可分为: 1、螺蚊锁固胶,用于螺纹防震防松。 2、密封胶,可以代替纸垫、垫片等起密封作用。 3、机件固持胶,如轴承、轴承磨损,用固持胶填补和固持磨损造成的间隙和松动。 4、粘接和密封其它材料,如各类金属、玻璃、陶瓷、磁铁等。我们首次使用的乐泰厌氧胶是609固持胶。我公司生产车间在检修5吨天车故障时,发现电机轴与滚动轴承配合部位严重磨损,     

预涂型厌氧胶在汽车生产中的应用

1　前言对于螺纹紧固件 ,工程界人士一直都致力于两方面的研究。其一是提高其承载能力 ;其二是防松。在化学锁固与密封技术出现之前 ,人们曾采用多种防松设计方案 ,如止动垫片、开口销、螺纹过盈或过盈变形 ,以及加弹簧垫圈和使用内阻尼螺母等。这些机械方法都是以增加零部件 ,提高加工精度为基础的 ,结果导致成本的增加。况且仍无法从根本上制止松动 ,更无法避免螺纹处的渗漏 ,而化学锁固与密封技术的出现 ,很好地解决了上述难题。2　厌氧胶密封、锁固原理在螺纹连接过程中 ,装配拧紧力矩Ｔ由预紧力产生的扭矩Ｔ1、螺纹面磨擦扭矩Ｔ2 、螺…     

汽车用厌氧螺纹锁固胶扭矩的影响因素研究

介绍了汽车用厌氧型螺纹锁固胶的固化机理,并以天山公司产品为例介绍了厌氧型螺纹锁固胶扭矩的影响因素,包括固化温度、固化时间、螺栓表面状态、螺栓类型、间隙等等,并与国外同类产品做了对比试验,     

粘接密封技术在机械制造中的应用

介绍了乐泰200、500、600系列厌氧胶的主要性能以及在大型压力机配合间隙超标、螺纹连接锁固和结合平面渗漏等情况下采用粘接密封技术的效果。     

Influence of thread geometry on the performance of retaining anaerobic adhesives

The main aim of this work is to study the influence of the geometry of screws on torsion tests when they are retained with adhesives. The geometry of different types of screw threads has been studied, measuring theoretical and real length values to determine the stress undergone by the thread when tightened and/or retained by anaerobic adhesives. Three kinds of joints are subjected to a torsion test to determine their loosening torque. According to their torque, joint loosening load as well as generated stress can be calculated. When tightened, the real contact area is observed to be lower than the theoretical area, and real stresses are therefore higher than the theoretical ones. The same can be observed when only adhesive is applied; the real bonded area is lower than the theoretical, while higher real stresses than theoretical are observed. When adhesive and tightening are combined, the stress due to the influence of the adhesive is calculated, since the strength ratio attributable to either friction or adhesion remains unknown. These can only be determined through the measurement of real thread dimensions.     

耐高温型结构厌氧胶黏剂的研究进展

本文综述了耐高温厌氧胶的发展状况，根据其单体的特点将耐高温厌氧胶进行分类，并着重阐述了耐高温结构厌氧胶的单体合成及以该单体配制成厌氧胶的性能特点。     

Anaerobic Adhesive Cure Mechanism-I

Anaerobic adhesives are single-component acrylic adhesives which cure rapidly at or below room temperature when air is excluded, but they remain in an uncured stage over a long time when they are exposed to an adequate supply of air. Thus, anaerobic adhesives are widely used in retaining compounds for nuts and bolts, in sealants, and for impregnation. Recently, anaerobic adhesives have also been used in electrical and electronic applications because of their fast room temperature cure capability and their convenience.¹     

Anaerobic Adhesive Cure Mechanism-II

Anaerobic adhesives are single-component acrylic adhesives which cure rapidly at or below room temperature when air is excluded, but they remain in an uncured stage over a long time when they are exposed to an adequate supply of air. Thus, anaerobic adhesives are widely used in retaining compounds for nuts and bolts, in sealants, and for impregnation. Recently, anaerobic adhesives have also been used in electrical and electronic applications because of their fast room temperature cure capability and their convenience.     

填料对预涂型厌氧胶性能的影响

在预涂型厌氧胶甲组分中加入超细碳酸钙、硅微粉作为填料,可制得性能较好的高强度、中强度预涂型厌氧胶。当填料用量在6％时,综合性能最佳。     

Anaerobic Adhesive Cure Mechanism-I

Anaerobic adhesives are single-component acrylic adhesives which cure rapidly at or below room temperature when air is excluded, but they remain in an uncured stage over a long time when they are exposed to an adequate supply of air. Thus, anaerobic adhesives are widely used in retaining compounds for nuts and bolts, in sealants, and for impregnation. Recently, anaerobic adhesives have also been used in electrical and electronic applications because of their fast room temperature cure capability and their convenience.¹     

厌氧胶用复合型氧化还原引发剂

介绍了过氧化物－叔胺－糖精（胺体系）和过氧化物－取代肼－糖精（肼体系）两种厌氧胶引发剂体系的组成和性能，试验表明，采用多成分的复合引发剂是兼顾厌氧胶固化速度和贮存稳定性的较好途径。