Steel plate bending strength and thickness?
Steel plate bending strength and thickness?
(OP)
How does the strength of a saw blade change as the thickness of the plate changes?
If one saw blade has a steel saw plate 0.125" thick and another, otherwise identical, has a steel saw plate (body) that is 0.100" thick, then what is the difference in strength? Does the same ratio apply for a saw body (plate) thickness of 0.075"?
We are looking for differences in strength as related to susceptibility to bending during cutting. Bending would occur from feeding deviation or differences in material such as knots or rocks in wood.
The source for this question stems from a discussion on just how much more dangerous are thin kerf saw blades than standard kerf saw blades.
Thank you,
Tom Walz
If one saw blade has a steel saw plate 0.125" thick and another, otherwise identical, has a steel saw plate (body) that is 0.100" thick, then what is the difference in strength? Does the same ratio apply for a saw body (plate) thickness of 0.075"?
We are looking for differences in strength as related to susceptibility to bending during cutting. Bending would occur from feeding deviation or differences in material such as knots or rocks in wood.
The source for this question stems from a discussion on just how much more dangerous are thin kerf saw blades than standard kerf saw blades.
Thank you,
Tom Walz
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.





RE: Steel plate bending strength and thickness?
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Maui
www.EngineeringMetallurgy.com
RE: Steel plate bending strength and thickness?
Unfortunately I neglected to include "circular saws" in my description.
These blades tensioned by hammering or rolling the metal.
Assume everything else is equal and only the metal thickness varies.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: Steel plate bending strength and thickness?
A 20% reduction leaves you with app. 51% of the strength.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: Steel plate bending strength and thickness?
http://www.thinkerf.com/Downloads/HeatFlow.PDF
Maui
www.EngineeringMetallurgy.com
RE: Steel plate bending strength and thickness?
Thank you.
I finally found my answer on Dr. Lehmann's site as well.
http://www.thinkerf.com/Downloads/ThinKerf.PDF
John Schultz of SuperThin Saws took a direction similar to yours and provided a nice list of additional factors.
The paper I read was based on 0.080" plate as compared to 0.040" plate. Does the same hold true for 0.125 diameter to 0.090" or 0.085"?
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: Steel plate bending strength and thickness?
In your original post you mentioned blade strength, not stiffness. The stiffness is primarily dependant upon the elastic modulus of the steel and the blade geometry, and is very insensitive to steel grade and heat treatment. The blade strength however is strongly dependant upon the grade of steel and the heat treatment that it receives. Which of these two are you interested in?
Maui
www.EngineeringMetallurgy.com
RE: Steel plate bending strength and thickness?
I have seen enough industrial saw blades to know the problems that can arise. I was looking for some way to convey the need to be more careful with thin kerf blades.
Attached is an 0.070" saw blade that had a few problems.
Thirty years ago I started working on saw blade brazing. Fifteen years ago I started working on learning carbide. Now I am trying to learn something about steel.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: Steel plate bending strength and thickness?
For a discussion of why the elastic modulus is so insensitive to changes in chemical composition/heat treatment/cold work see
FAQ330-1441: Why is the elastic modulus relatively insensitive to changes in chemistry/heat treatment/coldwork?
Maui
www.EngineeringMetallurgy.com