Abstract
Link elevators are very widely used during drilling of oil and gas wells. One of the main parts of such elevators is the link latch, which prevents the links from falling out of the lugs spontaneously and thus ensures the reliability of the elevator. In order to meet the high quality and reliability standards specified for link latches the design was improved, i.e., the latch handle was given a spherical shape to eliminate sharp protrusions and to prevent spontaneous opening of the latch during use of the elevator. The new design of the link latch made stamping uneconomical because the amount of subsequent machining was too much. It was therefore decided to make these parts by investment casting. Metallographic studies showed that this technological process produced castings meeting the technical quality standards. Introduction of the investment casting process for link latches helped to reduce the man-hours required for machining by 95% and dramatically improved the reliability in service.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
