O-Ring Groove Design for Packing Preformed, Elastomeric O-Ring Seals, Static, Radial Squeeze, Metric

SUMMARY Myrehead has revealed the eroded remnants of activity from the Beaker period (Period A) onwards, with actual settlement evinced only from about the early first millennium be. The three houses and the cooking pits of Period B may have been constructed and used sequentially. This open settlement was probably replaced during the mid first millennium bc, possibly without a break, by a palisaded enclosure (Period C), which may have contained a ring-groove house and a four-post structure. Continued domestic activity (Period D) was suggested by a single pit outside the enclosure, dated to the late first millennium bc/early first millennium ad. The limited evidence of the economy of the settlements suggests a mixed farming system.

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Evaluating the influence of grinding mode on part’s accuracy and grinding wheel’s wear in grinding profile for ball bearing's inner ring groove

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/56/4/10892 ◽

2018 ◽

Vol 56 (4) ◽

pp. 531

Author(s):

Nguyen Anh Tuan ◽

Vu Toan Thang ◽

Nguyen Viet Tiep

Keyword(s):

Theoretical Analysis ◽

Current Issue ◽

Grinding Wheel ◽

Machining Accuracy ◽

Ring Groove ◽

Production Practice ◽

Wear Of Grinding Wheel ◽

Output Factors ◽

Grinding Operations ◽

Technological Mode

Determining the influence of technological mode factors on machining accuracy is always an current issue in the production practice especially for grinding operations. This paper presents some research results to determine the effect of grinding parameters on grinding wheel’s wear and part’s accuracy in grinding profile for ball bearing's inner ring groove. From theoretical analysis and experimental results, the article assesses the influence of grinding mode factors on output factors. Based on that, the economic limitation wear of grinding wheel at three different grinding modes is determined.

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Analytical Studies on Shrinkage Stress Distribution In GMA And Pulse Current GMA Welds Of Thick Wall Stainless Steel Pipe Having Narrow And V-Groove Design

Indian Welding Journal ◽

10.22486/iwj.v43i1.178017 ◽

2010 ◽

Vol 43 (1) ◽

pp. 14 ◽

Cited By ~ 2

Author(s):

P. K. Ghosh ◽

Ravi Ranjan Kumar ◽

K. Devakumaran

Keyword(s):

Stainless Steel ◽

Stress Distribution ◽

Pulse Current ◽

Steel Pipe ◽

Thick Wall ◽

Shrinkage Stress ◽

Groove Design ◽

Analytical Studies ◽

Stainless Steel Pipe ◽

Wall Stainless Steel

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Optimization of Inlet Ring Groove Arrangement for Suppression of Unstable Flow in a Centrifugal Impeller

Volume 6: Turbo Expo 2005, Parts A and B ◽

10.1115/gt2005-68675 ◽

2005 ◽

Cited By ~ 3

Author(s):

Masahiro Ishida ◽

Daisaku Sakaguchi ◽

Hironobu Ueki

Keyword(s):

Flow Rate ◽

The Other ◽

Centrifugal Impeller ◽

Shape Parameters ◽

Unstable Flow ◽

Ring Groove ◽

Flow Rates ◽

Small Flow ◽

Specific Speed ◽

Large Flow

An optimization of the inlet ring groove arrangement has been pursued in the present study for obtaining better impeller characteristics and a wider operation range at both small and large flow rates in a high specific speed type centrifugal impeller with inducer. The effects of the shape parameters with respect to the inlet ring groove on the impeller characteristic and the flow incidence were analyzed mainly based on numerical simulations, but also compared to the experimental results. At small flow rates, a significant improvement in the impeller characteristic is achieved due to reduction in the excessive-positive flow incidence by optimizing both location and width of the rear groove near the inducer tip throat. On the other hand, the impeller characteristic is improved at large flow rates by implementing the corner radius at the rear groove edge and by placing another front ring groove in the suction pipe. As a result, by the optimized configuration of the front and rear ring grooves, the unstable flow range of the test impeller can be reduced by about 50% without deterioration of the impeller characteristic even at the 125% flow rate.

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