12
Fig-12 Menu interface
(17) When the cursor comes to the item “Next page”, press ENTER to return to the menu shown in Fig-9.
(18) When the cursor comes to “Quit”, press ENTER to exit the preset menu and return to the interface of Fig-8.
(19) Date of test:
At the small window in Fig-11, to press
▲
or
▼
key to select specific item, press ENTER and then press
▲
or
▼
key to change the figure. The item “Date Print” is to determine whether or not to print out the date of test.
(20) Hardness Type: The options are HBS210, HBS30C, HVS30 and HVS50. Among them, HBS210 and HBS30C
are for Brinell hardness tester while HVS30 and HVS50 are for Vickers hardness tester. This item shall be
determined as per specific model of the tester. For the model 210HBS-3000, HBS210 should be selected.
(21) Hardness conversion: It is designed as per GB1172-1999 Conversion of hardness and strength for ferrous
metals. The hardness values can be converted to HRC, HRA, HR15N, HR30N, HR45N, HV and so on.
(22) Tensile strength
δ
b: It is designed as per GB1172-1999 Conversion of hardness and strength for ferrous
metals. The tensile strength can be converted to is including “C_St”, “Cr_St”, “CrV_St”, “CrNi-St”, “CrMo_St”,
“CrNiMo_St”, “CrMnSi_St”, “Strength_St” and “Stainless_St”.
Press
▲
or
▼
key to select specific item, then press ENTER and press
▲
or
▼
key to change the figure. At
last, press ENTER again to confirm.
11
Operation of micrometer
Turn the 1X or 2X objective lens to the front and then turn elevation hand wheel so that the surface of specimen
is 15mm under the objective lens. Then turn elevation hand wheel slowly and at the same time check through the
ocular lens until the indentation can be observed clearly. Turn the ocular lens until the division lines can be seen
clearly.
Note: During process of operating, by pressing
▲
or
▼
key (Brightness increase / decrease) on front panel,
the brightness of illuminating source can be adjusted to obtain a better field of view.
After loading-dwelling-unloading process, turn the selected objective lens to the front and start measuring the
indentation (after the objective lens arrives in correct position, system will automatically memorize the
magnification ratio of objective lens for the purpose of hardness calculation).
Turn the hand wheels of micrometer to move the two division lines, see Fig-13. After the two lines are tangent to
each other as shown in Fig-14, press ZERO on front panel to zero the micrometer.
Fig-13 Micrometer
