Rockwell Hardness Tester - Revision history

Jim: /* Major Components */

2018-01-23T20:09:16Z

Major Components

← Older revision		Revision as of 20:09, 23 January 2018
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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>

2018-01-23T20:01:39Z

Major Components

← Older revision		Revision as of 20:01, 23 January 2018
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	</gallery>		</gallery>

	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.

	=== Indentor / Penitrator Choice ===		=== Indentor / Penitrator Choice ===

2018-01-23T20:01:04Z

Procedure

← Older revision		Revision as of 20:01, 23 January 2018
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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.

	3. Apply Minor Load		3. Apply Minor Load

2018-01-23T15:56:06Z

Procedure

← Older revision		Revision as of 15:56, 23 January 2018
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	3. Apply Minor Load		3. Apply Minor Load

	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.

	4. Apply Major Load		4. Apply Major Load

2018-01-23T15:55:11Z

Procedure

← Older revision		Revision as of 15:55, 23 January 2018
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	=== Procedure ===		=== Procedure ===

	1. Select the penetrator/indentor ~~and test block~~		1. Select the penetrator/indentor.

	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

2018-01-23T15:54:36Z

Procedure

← Older revision		Revision as of 15:54, 23 January 2018
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	=== Procedure ===		=== Procedure ===

	1. Select the penetrator and test block		1. Select the penetrator/indentor 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. 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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	2. Set up the tester		2. Set up the tester

	Secure the penetrator 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.

2018-01-23T15:53:35Z

Major Components

← Older revision		Revision as of 15:53, 23 January 2018
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	File:Rockwell_Dial.JPG\|Dial		File:Rockwell_Dial.JPG\|Dial
	</gallery>		</gallery>

			The indentors and hardness test blocks and spare anvils are in the tan cabinet.

	=== Indentor / Penitrator Choice ===		=== Indentor / Penitrator Choice ===

2018-01-21T19:55:52Z

Procedure

← Older revision		Revision as of 19:55, 21 January 2018
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	2. Set up the tester		2. Set up the tester

	Secure the penetrator and the appropriate anvil in the tester.		Secure the penetrator and the appropriate anvil in the tester.
			Select correct weight, 150kg for C scale 100 kg for B scale.

	3. Apply Minor Load		3. Apply Minor Load

2018-01-21T16:39:39Z

Procedure

← Older revision		Revision as of 16:39, 21 January 2018
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	6. Take the reading		6. Take the reading

	With the diamond penetrator, read Column C on the barrel dial (black numbers).		With the diamond penetrator, read Column C on the barrel dial (black numbers).
	With the ball penetrator, read column B (red numbers).		With the ball penetrator, read column B (red numbers).
	NOTE: The first two or three tests may be low until the penetrator and anvil have become firmly seated.		NOTE: The first two or three tests may be low until the penetrator and anvil have become firmly seated.

2018-01-21T16:37:18Z

Indentor / Penttrator Choice

← Older revision		Revision as of 16:37, 21 January 2018
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	</gallery>		</gallery>

	=== Indentor / ~~Penttrator~~ Choice ===		=== Indentor / Penitrator Choice ===

	Diamond indentor, marked 'MC' for hard materials RHC scale ( see wikipedia for scale explanation)		Diamond indentor, marked 'MC' for hard materials RHC scale ( see wikipedia for scale explanation)