Rockwell Hardness Tester: Difference between revisions

From PS:1 Wiki Dev
Jump to navigationJump to search
← Older editNewer edit →
Content deleted Content added
VisualWikitext
Jim (talk | contribs)
533 edits
No edit summary
Jim (talk | contribs)
533 edits
Line 28: Line 28:


== Operation ==
== Operation ==
-----need operation instructions---





===Typical values===
===Typical values===

Revision as of 20:50, 17 January 2018

{{#ifeq: Cold Metals, on a bench | Removed | {{ 

 {{#switch:
 {{#if: 
   | 
   | {{#if: 
     | 
       {{#ifeq:|
       | talk
       |  
       }}
     | 
       {{#ifeq:|talk
       | talk
       |  
       }}
     }}
   }}

| main | = ambox | talk = tmbox | user = ombox | project = ombox | file | image = imbox | mediawiki = ombox | template = ombox | help = ombox | category = cmbox | book = ombox | extension = ombox | other | #default = ombox

}} | type = notice | image = | imageright = | class = | style = | textstyle =

| text = This tool is no longer at the space. Find what actually exists at PS1 on the Equipment page.

Error creating thumbnail: Unable to save thumbnail to destination

| small = | smallimage = | smallimageright = | smalltext = | subst = | date = | name = }} | {{#if: rockwellhardness.jpg | | }}{{#switch: yes | yes | "yes" | Yes | "Yes" | YES | "YES" | y | "y" | Y | "Y" = | {{ 

 {{#switch:
 {{#if: 
   | 
   | {{#if: 
     | 
       {{#ifeq:|
       | talk
       |  
       }}
     | 
       {{#ifeq:|talk
       | talk
       |  
       }}
     }}
   }}

| main | = ambox | talk = tmbox | user = ombox | project = ombox | file | image = imbox | mediawiki = ombox | template = ombox | help = ombox | category = cmbox | book = ombox | extension = ombox | other | #default = ombox

}} | type = notice | image = | imageright = | class = | style = | textstyle = | text = This tool is currently broken, please contact the area host for more information. | small = | smallimage = | smallimageright = | smalltext = | subst = | date = | name = }} }}{{#if: Cold Metals | | }}{{#switch: yes yes | "yes" | Yes | "Yes" | YES | "YES" | y | "y" | Y | "Y" = | }}}}

<html>

<svg id="printableArea" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 555 175" enable-background="new 0 0 555 175" xml:space="preserve" height="175px" width="555px" style="border:2px solid #000000;display: flex; height: auto ; width: auto ;" onClick="printSVG()">

<g id="qr"> <image width="150" height="150" transform="translate(2,2)" xlink:href="https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=https://wiki.pumpingstationone.org/wiki/</html>Rockwell_Hardness_Tester<html>" /> </g>

<g id="title" transform="translate(165,20)"> <text font-family="Arial,Helvetica,sans-serif" font-size="18" font-weight="bold"></html>Rockwell Hardness Tester<html></text> </g>

</html> {{#ifeq: PS:One | PS:One | <html> <g id="psoneproperty" transform="translate(155,23.5)"> 

 <image width="80" height="103" xlink:href="https://mywikis-wiki-media.s3.us-central-1.wasabisys.com/ps1/PS1_owned.svg"/>

</g> </html> | <html> <g id="owner" transform="translate(155,30)"> 

 <image width="80" height="90" xlink:href="https://mywikis-wiki-media.s3.us-central-1.wasabisys.com/ps1/Person_owned.svg"/>
 <text transform="matrix(1 0 0 1 10.0 110.0)" font-family="Arial,Helvetica,sans-serif" font-size="12"></html>PS:One<html></text>

</g> </html> }} {{#if: Cold Metals | <html> <g id="hostarea" transform="translate(250,130)"> 

 <text transform="matrix(1 0 0 1 0 0)" font-family="Arial,Helvetica,sans-serif" font-weight="700" font-size="12">Area:</text>
 <text transform="matrix(1 0 0 1 35.0 0)" font-family="Arial,Helvetica,sans-serif" font-size="12"></html>Cold Metals<html></text>

</g> </html> | <html> <g id="hostarea" transform="translate(250,130)"> 

 <text transform="matrix(1 0 0 1 0 0)" font-family="Arial,Helvetica,sans-serif" font-weight="700" font-size="12">Area:</text>
 <text transform="matrix(1 0 0 1 35.0 0)" font-family="Arial,Helvetica,sans-serif" font-size="12"></html>Not Assigned<html></text>

</g> </html> }} {{#ifeq: yes | yes | <html> <g id="authorization" transform="translate(245,35)"> 

 <image width="150" height="79" xlink:href="https://mywikis-wiki-media.s3.us-central-1.wasabisys.com/ps1/Authorization_required.svg"/>

</g> </html> | <html> <g id="authorization" transform="translate(245,35)"> 

 <image width="150" height="79" xlink:href="https://mywikis-wiki-media.s3.us-central-1.wasabisys.com/ps1/Authorization_not_required.svg"/>

</g> </html> }} {{#ifeq: no | yes | <html> <g id="hackable" transform="translate(400,35)"> 

 <image width="150" height="79" xlink:href="https://mywikis-wiki-media.s3.us-central-1.wasabisys.com/ps1/Hackable.svg"/>

</g> </html> | <html> <g id="hackable" transform="translate(400,35)"> 

 <image width="150" height="79" xlink:href="https://mywikis-wiki-media.s3.us-central-1.wasabisys.com/ps1/Do_not_hack.svg"/>

</g> </html> }} <html>

<g id="url" transform="translate(6,167)"> <text font-family="Arial,Helvetica,sans-serif" font-size="12"></html>https://wiki-dev.pumpingstationone.org/wiki/Rockwell_Hardness_Tester<html></text> </g>

<script type="text/JavaScript"> <![CDATA[

function printSVG() { const newWindow = window.open(, '_blank'); newWindow.document.write(svg.outerHTML); newWindow.document.close(); //newWindow.print(); //uncomment to auto-print on click }

const svg = document.getElementById('printableArea');

]]>

</script>


</svg>

</html>

Lua error: Internal error: The interpreter exited with status 127.

Qualified Member Trained By
NA Danger committee

Rockwell Hardness

The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale. When testing metals, indentation hardness correlates linearly with tensile strength. This important relation permits economically important nondestructive testing of bulk metal deliveries with lightweight, even portable equipment, such as hand-held Rockwell hardness testers.

Copied from Wikipedia. See Wikipedia for additional background

Operation

need operation instructions---



Typical values

  • Very hard steel (e.g. chisels, quality knife blades): HRC 55–66 (Hardened High Speed Carbon and Tool Steels such as M2, W2, O1, CPM-M4, and D2, as well as many of the newer powder metallurgy Stainless Steels such as S30V, CPMS-154, ZDP-189, etc.)<ref>Knife blade materials</ref>
  • Axes: about HRC 45–55
  • Brass: HRB 55 (Low brass, UNS C24000, H01 Temper) to HRB 93 (Cartridge Brass, UNS C26000 (260 Brass), H10 Temper)<ref>matweb.com, accessed 2010-06-23</ref>

Several other scales, including the extensive A-scale, are used for specialized applications. There are special scales for measuring case-hardened specimens.

Notes

As of October 2015, the machine shop doesn't have a diamond indenter for the Rockwell C scale -- but we do have spherical indenters for Rockwell B.

Keep the dust cover on. Use calibration discs if you care about your results. Accessories for the tester are in the tan colored cabinet.

Resources

Wikipedia : https://en.wikipedia.org/wiki/Rockwell_scale

This video shows another machine but it has a good explanation of the test: https://www.youtube.com/watch?v=G2JGNlIvNC4

Source for diamond indentor: http://www.westportcorp.com/dpc1.html

Retrieved from "https://wiki-dev.pumpingstationone.org/mediawiki/index.php?title=Rockwell_Hardness_Tester&oldid=35617"