Memory cleaner pro 1 3 1. Rockwell Hardness Tester Handbook
Manufacturers worldwide have recognized Standard E-18, defined by the American Society for Testing and Materials (ASTM) as the accepted parameters for hardness testing using the Rockwell method. For companies looking for a portable hardness tester standard E-110 has been accepted as a continuation of E-18 relating solely to portable Rockwell hardness testers. The general testing procedure of E-18 and E-110 is as follows:
A rounded penetrator of known hardness is forced into the test surface under a specific pressure load. A crude hardness reading could be taken from the depth of penetration. Some inexpensive testers use this method.
To eliminate errors caused by surface variations, a minor load is applied and held while the tester is “zeroed”. The real hardness reading measures the difference in penetration between the minor load and the major load.
Tester accuracy is checked by running the test on specimens of certified hardness.
HR-150B heightened Rockwell hardness tester, using the method of measuring the penetration depth, the hardness value is directly read by the indication. Therefore, the operation is simple and convenient, easy to grasp, high work efficiency, and suitable for inspection of batch parts. Nov 20, 2008.
1. Select the penetrator and test block
Soft materials are usually tested in the Rockwell B Scale, using 1/16″ ball penetrator and 100 Kg Major Load. Hardened steel and hard alloys are tested in the Rockwell C Scale, using a diamond penetrator and a 150 Kg Major Load. https://ameblo.jp/chromunivjai1976/entry-12644614107.html. Do not use the ball penetrator with the steel test block or when testing hard steel. Such a procedure will damage the penetrator and result in invalid tests
2. Set up the tester
Secure the penetrator and the appropriate anvil in the tester. Check the position of the indicator hand. It should rest directly on the dot on the indicator dial. If it doesn’t, adjust the dial by turning the bezel to locate the dot under the pointer.
Phase II Hardness Testers accurately measure hardness of materials in Rockwell hardness A, B, and C scales. Heat‐ treated steels are tested using a 120 diamond indentor in the C‐scale (HRC 20‐70). Soft materials are tested using a 1/16' steel ball indentor in the B‐scale (HRB 25‐100). Rockwell Hardness Tester. MHRS-150-Z automatic Rockwell hardness tester USD9500; b. HR-150A Manual Rockwell Metal Hardness Tester Durometer Price 500-700$ c. High-Quality HR-45D Electric Rockwell Metal Hardness Tester Motorized Rockwell HR15T 900$ d. Model HR-150A III Rockwell hardness tester price 2000$ 3.
3. Apply Minor Load
Slowly turn the hand wheel to bring the indicator hand to the line marked “SET”. This applies minor pressure load to the penetrator.
4. Set the barrel dial
Rotate the top of the barrel dial toward you until its pin rests against the upper edge of the Lucite magnifier. The upper line of the barrel’s hardness scales should be exactly aligned beneath the hairline on the magnifier. (NOTE: There is no pin on Model 1-4). These must be aligned visually.)
5. Apply Major Load
Turn the hand wheel only until the dial pointer rests on the major pressure load indicated by the chart.
Be careful to bring the indicator hand exactly to the desired graduation on the dial and no farther. (Once penetration goes beyond the major load, a valid reading can no longer be obtained from that penetration. Go back to Step 2. If reading can no longer be obtained from that penetration. Go back to Step 2. If you did not stop at the major load, go on to Step 6.)
Turn the hand wheel back to bring the indicator hand back to “SET” and take the reading on the barrel dial through the Lucite magnifier. Each graduation on the barrel dial indicates two points in the Rockwell scale.
6. Take the reading
Standard Tester:
Superficial Tester:
NOTE: The first two or three tests may be low until the penetrator and anvil have become firmly seated.
Check out the videos below for tips on using your hardness tester
MODEL HR-150A ROCKWELL HARDNESS TESTER
Feature & Use
Manual testing process, no need for electric controlling. https://qgxmog.over-blog.com/2020/12/best-open-source-video-editing-software-for-youtube.html.
High quality integrated cast iron machine body, with the automotive paint treatment process, the appearance is smooth and beautiful.
Read the hardness value directly from the dial gauge, and other Rockwell scales are optional.
Frictionless main shaft, high test accuracy.
Precise integral casting hydraulic buffer, no buffer liquid leakage, smooth loading without impact, and the loading speed is adjustable. Katawa shoujo route map.
Precision conforms to GB/T230.2, ISO6508-2 and ASTM E18.
It’s suitable to determine the Rockwell hardness of ferrous, non-ferrous metals and non-metal materials. It can be widely applied in the Rockwell hardness testing for heat treatment materials, such as quenching, hardening and tempering, etc. It features wide application range, easy operation, good economy and practicality.
Specifications
Measuring range: 20-95HRA, 10-100HRBW, 20-70HRC
Test force: 588.4, 980.7, 1471N (60, 100, 150kgf)
Max. height of test piece: 170mm
Depth of throat: 130mm
Min. scale value: 0.5HR
Dimensions: 466 x 238 x 630mm
Weight: approx. 65kg
Standard accessories
Large flat anvil: 1 pc.
Small flat anvil: 1 pc.
V-notch anvil: 1 pc.
Diamond cone penetrator: 1 pc
1/16” Tungsten carbide ball penetrator: 1 pc.
Rockwell standardized block: 5 pcs.
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