MANUAL TH-134 TH-134

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Rudolf Booth
5 years ago
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1 MANUAL TH-134 TH-134

2 CONTENTS 1. INTRODUCTION IMPACT TH-134 visualized General description Typical applications Technical specification Table of measuring range versus material 4 2. CRITERIA FOR COMPONENTS AND PRETREATMENT General Measuring in grooves, cylinders and concave surfaces Support and coupling of thin and/or light components 5 3. OPERATION Function regions keyboard and display Using the memory and print option Memory on display Printing the memory Deleting stored readings Measuring 8 4. MAINTENANCE AND REPAIR Maintenance Repair 9 Manual TH-134 1

3 1. INTRODUCTION 1.1 IMPACT TH-134 VISUALIZED 1- Integrated impact device 2- Battery charger inlet 3- Printer connection 4- L.C.D. display 5- Power switch 6- Release button impact body 7- Coil 8- Support ring 9- Loading grip The IMPACT TH-134 comes complete a testblock, plastic case, charger and instruction manual. 2 Manual TH-134

4 1.2 GENERAL DESCRIPTION The IMPACT TH-134 is an advanced integrated hardness tester distinguished by its very compact size, high accuracy, wide measuring range and simplicity of operation. It is suiteble for testing the hardness of all metals and widely applied in many areas of industry worldwide. The IMPACT TH-130hardness tester combines the universal impact device D and a data processor in a single unit. It automatically computes all Vickers, Brinell, Rockwell or Shore hardness values. The impact direction can be set so that accurate values can be achieved at any angle, even up-side down! Statistical mean value is automatically provided. The measuring method of the IMPACT TH-134 is defined as the quotient of the impact body s rebound velocity over its impact velocity. When the tester is connected to its associated printer it can perform real time printing or batch printing. It can also be equipped with optional accessoires such as support rings, to meet the requirements of specialised applications. 1.3 TYPICAL APPLICATIONS * In situ testing of large and/or heavy components, items already installed as parts of a machine * During manufacture, especially of mass produced components * In the stores for material identification * In locations with difficult access or in confined spaces 1.4 TECHNICAL SPECIFICATIONS * Hardness Scales : HRC, HRB, HRA, HV, HB, HS, HL * Size : 150 x 22 x 53 mm * Impact device : Integrated model D * Impact energy : 11 Nmm * Test tip : Tungsten Carbide * Accuracy : Mean uncertainty +/- 1 percent ( corresponding to +/- 1 HRC at HRC = 58 ) * Max.hardness of sample : 980 HV * Weight : 130 g * Operating time : 8 hours continuous use / rechargable * Impact direction : Any angle * Operating temperature : 0 to +50 degrees C Criteria samples ( see chapter 2 ) * Min. weight of sample : 5 kg (less than 5 kg to 0.1 kg: coupled on solide support) * Min. thickness of sample : 5mm(coupled: 3mm) * Min. thickness of layers : 0.8mm * Min. radius of curved surface : 30mm (with support rings: 11mm) * Coupling paste is available for testing thin or small parts weighing less than 2Kg. Manual TH-134 3

5 1.5 TABLE OF MEASURING RANGE VERSUS MATERIAL ( HL: ) Material HRC HRB HRA HB HV HSD Steel and cast steel Cold work tool st Stainless steel Grey cast iron Nodular cast iron Cast aluminium alloys Copper / zinc alloys (brass) CuAl / CuSn alloys (bronze) Wraught copper alloys 4 Manual TH-134

6 2. PRETREATMENT OF SAMPLES 2.1 GENERAL To eliminate hardness error possibly resulted from the roughness of sample surface, the test surface should be smooth (if possible polished) until its roughness Ra attends no more than 2mm (or Rz < 10mm). The test surface should be clean and free from oil stain. 2.2 MEASURING IN GROOVES, CYLINDERS AND CONCAVE SURFACES On curved surfaces having a radius of under 30mm, effective positioning on the workpiece is facilitated by the use of support rings (set of 7). The appropriate support ring is screwed on to the end of the impact device in place of the standard flat support ring. The set includes support rings suitable for bar/tube and grooves up to a radius of 11mm. Special support rings for convex or concave surfaces can be manufactured. 2.3 SUPPORT AND COUPLING OF THIN AND/OR LIGHT COMPONENTS * For test samples weighing over 5kg, no support is needed * Samples of cantilever or thin shell shape and samples weighing between 2 to 5 kg, need bearing support weighing over 5 kg, to be coupled firmly and tightly with them so as to prevent themselves from bending deformation or displacement due to impact force * Test samples weighing less than 2 kg should be coupled firmly and tightly with a support weighing over 5 kg * The coupling surface between the sample and the support should be plain and smooth * Proper but not excessive amount of coupling paste should be applied between the coupling surfaces * The direction of impact should be perpendicular to the coupling surface * Minimum weight of a test sample should not be less than 100 g, minimum thickness, not less than 5 mm and minimum depth of hardened layer, not less than 0,8 mm * The surface of a clamp holding the sample should be perpendicular to the impact direction Large plate, long bar or bent work piece * When the test sample is a large plate, long bar or bent work piece, impact force can cause it deformed or unstable and bring about error in measurement even if its weight or thickness seems applicable. In this case reinforcement should be bound to the back of the sample surface opposite of the impact force. * Test sample should not be magnetic in property. Manual TH-134 5

7 3. OPERATION 3.1 FUNCTION REGIONS KEYBOARD AND DISPLAY ON/OFF pad Use this pad to activate the tester. To save energy the tester will switch off automatically after 2 minutes stand-by. < > pad Use this pad to scroll through the menu. The display will show successively parameters: I. Measuring direction II. Material III. Hardness parameter IV. Average V. Opt. RETURN: memory and print mode VI. ***TEST***: Short internal procedure to set the chosen parameters...pad Use this pad to set the above parameters, after you ve choosen the right parameter with the... pad. I. MEASURING DIRECTION (DIR) Use the... pad to scroll through the following settings. See also the arrow on display for explanation. a) Normal vertical position of the tester on horizontal surface: + 90 degrees b) Tester under an angle of +45 degrees downwards c) Tester horizontal against vertical surface: 0 degrees d) Tester under an angle of -45 degrees upwards e) Tester upside down: -90 degrees II. MATERIAL (MAT) Use the... pad to scroll through the following settings: a) STEEL (all carbonsteels/casts) b) CWT.STEEL (cold work tool steel) c) STAIN.ST (stainless steel) d) GC. IRON (grey cast iron) e) NC. IRON (nodular cast iron) f) C. ALUMIN (cast aluminium) g) BRASS h) BRONZE i) COPPER 6 Manual TH-134

8 III. HARDNESS (HAR) Use the... pad to scroll through the following settings: a) HRC (Rockwell C) b) HRB (Rockwell B) c) HRA (Rockwell A) d) HV (Vickers) e) HS (Shore) f) HLD (Leeb) g) HB (Brinell) Note: When a specific hardness scale is set but doesn t fit to the chosen material, the word non on display will indicate that you have to switch to another hardness scale. IV. AVERAGE (AVE) Use the... pad to set a value between 1 and 9. After this amount of measurements the tester will automatically give an average. During the respective readings the number of measurements will be shown on display, until the average setting is reached. Only after an average setting of 1 reading, it is possible te measure directly again. In all other cases the tester will first calculate the average, display the mean value and return to the initial state afterwards automatically. V. OPT RETURN Use the... pad to scroll through the following settings: A sign * on display indicates that the shown parameter is set and therefor activated. Use the... pad to go to the next option (printer OFF - printer ON) and press the < > pad once to change the setting. The *-sign will now occur on display behind the chosen option. a) Opt RETURN : back ton menu by using the pad < > b) Opt PRT OFF : printer off when *-sign on display c) Opt PRT ON : printer on when *-sign on display d) Opt PRT MEM : printer memory by pressing pad < > e) Opt MEM OFF : memory off when *-sign on display f) Opt MEM ON : memory on when *-sign on display g) Opt MEM CLR : clear memory by pressing the pad < > VI. ***TEST*** During this setting the tester will go through a short internal test-procedure. After one second the tester will show the initial state on display. You can start measurement now. For example: HRC STEE 7 Hardness Rockwell C Steel/cast steel Direction (-90 degrees = upside down) Average given automatically after 7 readings Please note: Readings will disappear automatically after a few seconds and the display will show the initial state again as shown above to proceed. Press the... pad once again at any time to recall this last reading (average) on the display. Manual TH-134 7

9 3.2 USING THE MEMORY AND PRINT OPTION By activating Opt MEM ON by using the < > pad (the *-sign will occur on display) the tester will automatically store the average values of measurements. The readings are numbered from M01 to M99 maximum MEMORY ON DISPLAY On the display only the last reading stored can be shown, for example to compare with the current reading. To recall the last memory go to the initial state, for example through the***test***-procedure. The set parameters will be shown on display, for example HB COPP 4 Press the... pad to recall the last memory, for example: HB108 M01 In the memory 01 the average Brinell-value 108 is stored PRINTING THE MEMORY Printing the memory is only possible through an external printer. Go to Opt PRT MEM (take care that the Opt PRT ON is set using the < > pad: activate the *-sign). Now press the pad < > to print the memory. (Only available with optional Impact-printer) DELETING STORED READINGS Take care the Opt PRT MEM is set (use the pad < >: *-sign). Go to Opt MEM CLR and press the pad < >. The display will now show Clear Memory, and Opt RETURN directly afterwards. The memory is now cleared. 3.3 MEASUREMENT (1) Set all parameters (see paragraph 3.3) (2) Loading: Take the tester with your left hand, the display faced to yourself. Put the fingers from your other hand on both sides of the tester on the black slidings and press them in one movement downwards to load the impact body using a internal spring. Let the black slides go back upwards to their initial state. (3) Put the tester on the clean and polished surface with the black cilindrical part on the exact spot. Take care the black support ring is well fixed (screw-fitting). Take care also that there is a distance of at minimum 3 mm between two measurements. Put your thumb and finger on both sides on the tester just above the black cilinder and press the tester at the workpiece with normal force. (4) Now start a measurement by pressing the button on top of the tester with the other hand, to release the impact body. Keep the tester stabil all the time. (5) As soon as the impact body has hit the surface, you can take the tester away. It is not neccesary to wait longer. Read the first reading on display and repeat the measements untill you have reached a set average (see paragraph 3.1 / IV). Note: Readings out of range will be marked by highrange or lowrange on display. Continue or set another hardness scale. 8 Manual TH-134

10 4. MAINTENANCE AND REPAIR 4.1 MAINTENANCE Do you best to avoid shock, heavy dust, damp, strong magnetic field, oil stain. Always release the impact spring when the test is over! Clearing the tube * Clean the guide tube and impact body with a soft long brush after its performance of some tests in the following way. Loosen the black support ring and take out the impact body. Clean the tube by winding in counterclockwisely a sticklike brush until it reaches the bottom and then pull it out carefully. After repeating the same procedure some 5-6 times, fix the impact body and support ring again. * Never apply lubrication of any kind to the impact body or the tube. Charging * Charge the battery regularly. Usually a storage battery should be charged after working continuously at an interval of 8-12 hours. The charging process will take 8 hours. Built in the processor are two nickelcadmium storage batteries which generally last two years. If they are worn out they can be replaced at your TIME Technology Service Center. Don t open the tester yourself with repect to the warranty period. Testblock calibration Use the testblock to test the IMPACT on accuracy. The tolerance is +/- 1 percent. This means at HLD=800 a deviation of 12 units HLD up or down is okay. Ineffective measurements are possibly caused by a worn out spherical ball of the impact body after 3000 to measurements, depending on use and hardness of samples. The impact body can be renewed by the TIME Technology Service Center as a spare part. 4.2 REPAIR * If LCD appears blinker, it suggests that the battery voltage is lower than rated. Please turn off the power and charge the battery. * If LCD doesn t display, please turn off the power immediately. Please return the tester to your TIME technology Service Center. * When finding out any abnormalities otherwise, the user is kindly advised to transfer the tester to our Service Center as well. Thank you. Manual TH-134 9

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