The use of anaerobic adhesives for restoration of the equipment at the enterprises of consumer services

10.12737/4847 ◽  
2014 ◽  
Vol 8 (4) ◽  
pp. 5-17
Author(s):  
Владимир Башкирцев ◽  
Vladimir Bashkirtsev ◽  
Сергей Посеренин ◽  
Sergey Poserenin
Keyword(s):  
Consumer Services ◽  
Anaerobic Adhesives

Comparative characteristics of anaerobic adhesives have shown their capabilities when applied to restoring parts of machines and equipment. The authors propose a model of technology of restoration of machines and equipment with the use of anaerobic adhesives.

Study of the Fixing Process of Threaded Connections By Anaerobic Materials

2018 ◽  
pp. 122-127
Author(s):  
P. P. Fedirko ◽  
V. O. Krol ◽  
V. S. Bonchyk
Keyword(s):  
Room Temperature ◽  
Glycol Ethers ◽  
Threaded Connections ◽  
Torque Wrench ◽  
Mechanical Methods ◽  
Study Results ◽  
Polyalkylene Glycol ◽  
High Conversion Rate ◽  
Anaerobic Adhesives ◽  
Protection Of The Metal

The article presents the study results of the anaerobic materials effect on the strength of threaded connections in the repair of machinery and equipment. Their use is the simplest, most economical and reliable method of fixing and restoring threaded connections. The basis of the anaerobic compositions is polymerization compounds of the acrylic series, most often dimethacrylic and polyalkylene glycol ethers, which are characterized by a high conversion rate into spatially cross-linked polymers. Unlike mechanical methods of fixation and recovery, anaerobic materials completely fill the space between the threads of the spiral. This significantly increases the friction between the parts of the connection, improves the protection of the metal of the interface against corrosion, increases the torque when unscrewing in relation to the tightening torque, increases the resistance of the connection to the action of vibration, shock, shock loads. For the research, anaerobic thread locks were purchased, which were tested according to the same procedure and, after 24 hours at room temperature, each connection was clamped in a vice in turn so that the head of the torque wrench captures only the top nut, which had to be unscrewed. The rate of hardening of anaerobic adhesives is influenced by the size of the gaps between the combined surfaces, temperature, cleaning quality, the nature of the coating, etc. It has been established that the presence of polymerized anaerobic materials in the contact zone of parts significantly increases the strength of the joints. The conducted studies allowed to verify in practice the conformity of the tested anaerobic clamps of threaded connections to the stated parameters, to delineate the scope of their application. So, anaerobic adhesives for fixing threaded connections allow you to fix screws, nuts, bolts and pins to protect against loosening and loosening due to vibration

Frustrated Customers: The Effect of Unexpected Emotional Cues on Yelp Reviews

2021 ◽  
pp. 1-13
Author(s):  
Josh Matti
Keyword(s):  
Loss Aversion ◽  
National Basketball Association ◽  
Emotional Cues ◽  
Consumer Services ◽  
The Impact ◽  
The Phoenix ◽  
Reference Dependent Preferences

This paper explores how emotional cues from unexpected sports outcomes impact consumers’ perception of their experience at local businesses. Using nearly 1 million Yelp reviews from the Phoenix area, I empirically test for the presence of loss aversion and reference-dependent preferences in reviewer behavior. Consistent with loss aversion, unexpected losses lead to worse reviews while there is no effect for unexpected wins. The impact of unexpected losses is concentrated in home games, with no effect for away games. The results also reflect reference-dependent preferences since wins and losses in games predicted to be close do not impact reviewer behavior. Consumer services that cater to National Basketball Association fans (e.g., sports bars) experience pronounced effects.

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