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| File:Rockwell_Major_Load_Lever.JPG|Major Load Lever | | File:Rockwell_Major_Load_Lever.JPG|Major Load Lever |
| File:Rockwell_Dial.JPG|Dial | | File:Rockwell_Dial.JPG|Dial |
| + | File:Cold_Metals_Tan_Cabinet.JPG|Tan Cabinet |
| </gallery> | | </gallery> |
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− | The indentors and hardness test blocks and spare anvils are in the tan cabinet. | + | The indentors and hardness test blocks and spare anvils are in the tan cabinet, fifth drawer down. |
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| === Indentor / Penitrator Choice === | | === Indentor / Penitrator Choice === |
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| === Procedure === | | === Procedure === |
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− | 1. Select the penetrator/indentor and test block | + | 1. Select the penetrator/indentor. |
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| 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. 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 | | 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. 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 |
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| Secure the penetrator/indentor and the appropriate anvil in the tester. | | Secure the penetrator/indentor and the appropriate anvil in the tester. |
− | Select correct weight, 150kg for C scale 100 kg for B scale. | + | Select correct weight, 150kg for C scale 100 kg for B scale. Three weights are stacked in the tester, the bottom is 60kg, next is 40kg then 50kg. With all three weights the total is 150kg, for the C scale. Remove the top weight and you have 100 kg for the B scale. |
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| 3. Apply Minor Load | | 3. Apply Minor Load |
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− | Slowly turn the hand wheel to bring the small dial indicator hand to the line. This applies minor pressure load to the penetrator. | + | Slowly turn the hand wheel to bring the small dial indicator hand to the line. This applies a minor pressure load to the penetrator. |
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| 4. Apply Major Load | | 4. Apply Major Load |