Related Manuals for Starrett 3814
Summary of Contents for Starrett 3814
- Page 1 The L.S. Starrett Company 121 Crescent St. Athol, MA 01331 TECHNICAL SUPPORT: (201) 962-8352 Rockwell Hardness Tester Model No. 3814 Operation Manual...
- Page 2 A-scale (HRA 20-88). Tester features a weight adjustment handle for quick and easy adjustments between different scales. Release and reset levers are provided for quick and accurate testing. The 3814 includes standard, large and V- shaped anvils for holding small, large and round or curved materials. Storage box, 3-test blocks, 120° diamond indenter, 1/16”...
-
Page 3: Basic Set Up Information
Basic Set Up Information: 1) Loosen the 4 nuts on the bottom of the crate. Lift the crate off the platform being careful not to scratch the side of the hardness tester 2) Remove the tool kit from the platform 3) Remove the plastic dust cover 4) Remove the string holding the handles and top cover of the machine 5) Lift the top cover straight up and off the machine... - Page 4 Operating Instructions & Parts Manual Example of Weight installation Adding Oil to the Handle Buffer When moving the Load/Unload handle and you feel it make fast hard contact or hear a suction noise then its time to check the oil buffer. On the left side of the machine (when standing in front of it) there is a small metal access plate held on by 2 small screws.
-
Page 5: Installation
Operating Instructions & Parts Manual 120 Diamond 98.07N (60kgf) HRA 20-88 Scale Indentor Total force (Kg-F) Hardness Range 1/16" Ball 980.7N (100kgf) HRB 25-100 120 Diamond 1471 (150kgf) HRC 20-70 See Page 13 for full Weight Load/Scale/Indentor Chart 1. Never use clamps, straps, any other tooling or equipment to mount specimen to the tester anvil. General Safety Instructions 2. - Page 6 Operating Instructions & Parts Manual Caution: To ensure accuracy, mount the indenter by sliding it in the holder as far as possible and then securing the Seating Your Diamond: indenter by tightening the set screw finger-tight only. Place HRC test block on the small round anvil and begin by turning the handwheel clockwise until the block just touches the diamond.
- Page 7 2. Keep top of leadscrew, collar and anvils clean and free of grease, oil, dirt, burrs, etc. 3. Use the test blocks periodically to check tester accuracy. Use an oil sharpening stone to remove the burrs from the test blocks. Fine adjustment for 3814 Please follow these instructions before making any adjustments: IMPORTANT! 1) Be sure that ALL packaging material is removed from inside and outside of the machine.
- Page 8 Operating Instructions & Parts Manual Please be sure to make very slight adjustments when calibrating the 3814 as this machine is extremely sensitive to any movement. Always test first in Rockwell C scale. Install diamond indenter and set weight selector to 150kg(1471).
-
Page 9: Troubleshooting Chart
Operating Instructions & Parts Manual Troubleshooting Chart Symptom Possible cause(s) Corrective Action Incorrect hardness measurement Contaminants effecting Be sure the anvil, top of elevation measurement screw, threaded collar, indentor and specimen are all clean and free of oil, grease, dirt, shavings, debris, etc. Be sure elevation screw cover and top is clean and free of any dirt, oil, grease, etc. - Page 10 Operating Instructions & Parts Manual Rockwell C Hardness Range Approximate Hardness Conversion Numbers for Non-Austenitic Steels ( Rockwell C Vickers 10-mm 10-mm Knoop 15-N 30-N 45-N Scleroscope Rockwell Superficial Rockwell Number Brinell Hardness Number 150kgf (HV) Standard Carbide 500-gf Scale Scale Scale Scale...
- Page 11 Operating Instructions & Parts Manual Rockwell B Hardness Range Approximate Hardness Conversion Numbers for Non-Austenitic Steels ( Rockwell B Vickers 10-mm Knoop F Scale 15-T Scale 30-T Scale 45-T Scale Rockwell Superficial Rockwell Number 100kgf (HV) Standard 500-gf Scale 60kgf 15-kgf 30-kgf 45-kgf...
- Page 12 Operating Instructions & Parts Manual Approximate Leeb (Type D) Hardness Conversion for Non-Austenitic Steels (Rockwell C Hardness Range) A Leeb Hardness, Type D Rockwell C Hardness Vickers Hardness Brinell Hardness Impact Device (HLD) 150kgf (HRC) (HV 10) 10mm Steel Ball (721) 3000kgf (HBS) (699)
- Page 13 Operating Instructions & Parts Manual Weight - Load - Indentor Chart Scale Indentor Type Preliminary Total Typical Applications Symbol Force Force Spheroconical 98.07 (10) 588.4 (60) (kgf) (kgf) Diamond Cemented carbides, thin steel, and 1/16” Carbide Ball 98.07 (10) 980.7 (100) shallow case hardened steel Spheroconical...
- Page 14 Round Correction Factors Operating Instructions & Parts Manual Corrections to be added to Rockwell C, A and D values Corrections to be added to test results in the following scales for various diameter parts. Diameter of Convex Cylindrical Surfaces Hardness ¼”...
- Page 15 Minimum Thickness Requirements Operating Instructions & Parts Manual Minimum Minimum Rockwell Rockwell Rockwell Superficial Superficial Superficial Superficial Superficial Superficial Minimum allowable thickness for a corresponding hardness in the respective scales Thickness Thickness Inch 0.006 0.15 … … … … … …...
Need help?
Do you have a question about the 3814 and is the answer not in the manual?
Questions and answers