Top posts
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2nd Edition-SHOT PEENING
It is not often that a work of technical literature becomes a bestseller, especially since the market is usually very limited. But the 1st edition of SHOT PEENING has been an exception and it is totally sold out. Therefore we have decided to publish a...
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BLAST CLEANING FUNDAMENTALS
History of Blast Cleaning dates back to 1870 when Mr.B.C.Tilghmaan of Philadelphia obtained the first patent for sand blasting. In this process a jet of sand propelled at high velocity by a steam or air blast, is employed as a tool for cutting stone and...
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WHEEL BLASTING/PEENING-WHEN TO CHANGE WHEEL PARTS
I am yet to see an organisation where the operators/maintenace fitter change the wheel parts well in time.The parts are changed when they are broken.Well not that the wear implications are not evident but either it is not understood or it is sheer ignorance....
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Wear Parts Life in Shot Blasting/Shot Peening Machine
Its a common complain among the shot blasting & shot peening users that they do not get the wheel parts life.In most of the installations that I have visit the following are my observations: 1.There is no control over the abrasive quality. 2.There is...
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GEARING UP FOR HIGHER LOADS & EXTENDED WARRANTY THROUGH SHOT PEENING
INVITATION ASM INTERNATIONAL PUNE CHAPTER & INDIAN INSTITUTION OF PRODUCTION ENGINEERS WESTERN REGION TECHNICAL PRESENTATION ON "GEARING UP FOR HIGHER LOADS AND EXTENDED WARRANTY THROUGH SHOT PEENING DATE : 27.01.2010 Time: 6.30 P.M. VENUE Department...
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SHOT PEENING
Many a times I am faced with a very common question,"We are getting the arc height but we are not getting the desired compressive residual stress".The following are the underlying causes: 1.Wrong selection of equipment. 2.Wrong placement of Almen Holder...
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Improvement in Surface Fatigue Life of Hardened Gears by High-Intensity Shot Peening
Authors: Dennis P. Townsend ; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER Abstract: Two groups of carburized, hardened, and ground spur gears that were manufactured from the same heat of vacuum-induction-melted-vacuum-arc-remelted...
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Use of ceramic Shots in Shot Peening
I was in Singapore as a Guest Speaker at MFN International workshop.There I had the opportunity to have discussion with Mr.Francois Xavier Abadie of M/S Saint Gobain France.He has been working on the benifits of ceramic shots in shot peening. Few of the...
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SHOT PEENING & BLAST CLEANING WORKSHOP ORGANIZED BY METAL FINISHING NEWS
Most of the users of Blast Cleaning & Shot Peening Equipment have the following common questions: 1.How can one increase the wear parts life? 2.What should be the abrasive size and how do I check the quality of abrasives? 3.What Should be the hardness...
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MAINTENANCE OF DUST COLLECTOR IN BLAST CLEANING & SHOT PEENING MACHINE
1% DUST CONTENT IN THE CIRCULATING ABRASIVES WILL REDUCE THE WHEEL WEAR PARTS LIFE BY 60-80% Ventilation is the key to economical and efficient peening operation and it is generally the most neglected item, especially the dust collector. All problems...
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Contaminants in the abrasive operating mix in Blast Cleaning
Contaminants such as sand, ceramics, oxides, scale etc are to bseparated in the separator. Fines of this nature if present in the operating mix impose tremendous wear on the blast wheel components, causing high maintenance/replacement costs, causing costly...
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WHY WE CANNOT CONTROL BLASTING & PEENING PROCESS
I happen to visit a gear manufacturer recently.When I was taken around the Shot Blasting Machine I observed the following: 1.Lot of usable abrasive was coming out of the dust collector hopper. 2.No incoming abrasive inspection 3.Variable cycle time 4.Improper...
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The Story of Shot Peening
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Reflection on Metal Fatigue
Read my article in Metal Finishing News titled Reflection on Metal Fatigue.The concept of Shot Peening to overcome Metal Fatigue is as old as the 11th century. link
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Development in Fatgue peening
Paul Huyton, Managing Director of Surface Dynamics looks at applications and recent developments in surface treatment by peening. link