Author: Process Engineering Team, Versatile Equipments Pvt. Ltd. | January 2025 1 Why Talk About Permeability…Again? Because the metric is deceptively simple. 2000 mL of air, 10 g of sand, and one minute of your time. Yet the Darcy permeability number controls everything from scab formation in compacted graphite iron to decarburisation rims in stainless‐steel castings. With the global move [...]
By Versatile Equipments Technical Team | April 2025 Introduction In the world of sand casting, success often hinges on the properties of the mold itself. While much emphasis is placed on green compression strength, clay content, and compactability, there’s one property that quietly determines whether your casting will be sound—or riddled with gas-related defects. That [...]
It is very rare for a user to verify accuracy and precision of a test Sieve once it is bought from a Supplier. Almost every supplier provides a verification certificate with the Sieve. Still in many cases there are disputes when it comes to test results. Especially when the test results of seller’s material are [...]
Right Way to Check Compactability In this article, we shall try to understand "How" to correctly check compactability so that, results are accurate. We shall also look at some aspects of equipment maintenance and also so advanced ways of testing Compactability. Compctability measurement needs to be a very swift activity. In most high production foundries, prepared [...]
A Lab technician faces a challenge while choosing the Right Sieve for his Sieving application from the vast amount of choices he has. I shall try to give you a rough chart of sieve selection. The most important of them is the Sieve Grades.. The Grades and the Standards... The ISO standard for analytical [...]
From the vast amount of choices that the user has to make to choose the right Sieve for application, I shall try to give you a rough chart of sieve selection. The most important of them is the Grade. Chart to select sieve grade ASTM E11 ISO3310-1 While the ISO standard for analytical [...]
Measuring moisture in the lab is one of the most critical things in control of a sand plant and ultimately quality of sand which in turns affects the quality of casting. Well here is a video that, demonstrates how you can do it effectively with use of VRMD the Instant moisture teller [...]
Calculating grain fineness so far is an exercise which, requires a serious amount of precaution and a skilled person to conduct the test. Check out the video how we have redefined calculating Grain fineness number (AFS Number) after sifting. We do recommend buying ASTM E11 and ISO3310-1 compliant sieves. And here is a [...]