Rz surface finish converter

Tags : None. Find all posts. View Profile. Re: convert surface finish - Rz to Ra I found a page with much information on this, its a good read. But if the manufacturer uses Ra and the customer uses Rz the ratio will be higher, up to 20 to 1. Comment Post Cancel. Re: convert surface finish - Rz to Ra. Re: convert surface finish - Ra to Rz pls. Re: convert surface finish - Rz to Ra There is no direct conversion.

Try following this link:. I found a page with much information on this, its a good read. Re: convert surface finish - Rz to Ra need Rz 60 in Ra. Re: convert surface finish - Rz to Ra It might make the metric to english conversion a little less confusion if you show him where "40" comes from. If you show the mechanics behind your value he has a better chance of catching on. Let's first look at the wording of the formula: micro "meters" to micro "inches".

We all probably know that to convert millimeters to inches you divide millimeter values by There are many factors that affect surface finish, with the biggest being the manufacturing process see table above. For machining processes, such as milling, turning, and grinding, factors such as cutting tool selection, machine tool condition, toolpath parameters, feeds, speeds, tool deflection, cut width stepover , cut depth, coolant, and vibration are just a few of the many.

In general, adjust feeds and speeds for a lower chipload at the same rpms for a better finish. G-Wizard will also warn you if rubbing is a risk, which will help you avoid that problem. Our G-Wizard Calculator software has a special Mini-Calc that will help you adjust for a scallop height that delivers the required surface finish:.

Turning is very similar to 3D profiling in that the stepover, in this case determined by the feedrate while turning, results in scallops that match the shape of the turning insert. That will determine feedrate and insert nose radius we can use for the job. G-Wizard has a nice calculator for that too:. I am Anand, in a Machine Building industry. This Website is to HelpEngineers and get the technical support and discuss any Engineering subject and get a result out of that.

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Keep up the excellent works guys Ive added you guys to my blogroll. This is a great post thanks for sharing this informative information.. I will pay a visit to your blog site regularly for some latest publish. Your email address will not be published. Rz is calculated by measuring the vertical distance from the highest peak to the lowest valley within the scanned profile. The highest five peaks and the five deepest valleys are taken, then averaging these distances. Rz will always yield a higher Rz will always yield a higher value than Ra.

It is not possible since these are two different physical properties. It is like asking how do I convert height to weight. However, it is not accurate, and the measurement should be made according to how the surface roughness was indicated on the drawing. Each number corresponds to a Ra value. Pay attention that the scale is logarithmic.