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Honors
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Product : Portable Leeb Hardness Tester
Model : DH300
Country of Origin : CHINA
Brand : DTEC
Quality Certified : ISO,CE
Delivery Time : 3 days
Packing Weight : 6KG
Dimension : 37x30x12cm(LxWxH)
Package Type : Maker's Standard Export Carton Case
Courier : DHL/TNT/FedEx/UPS/EMS/Shipping Agent
Payment Term : TT100%/Private Bank Account/L/C/Paypal/Western Union
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- Product Intro
- Feature
- Specification
- Packing List
DH300 Colorful Screen Hardness Tester is a high cost performance model with colorful high-definition, 320×240 TFT dot matrix and mass storage;
It is applicable to big workpieces on-site hardness testing and batch testing on the workpieces in production lines. Moreover, it is also used in metal manufacturing industry, transportation, power station, petrochemical industry, aircraft industry, construction, lab, etc
Working Principle:
When the impact body,with a certain weight,impacts against the specimen surface under the action of spring force,leeb hardness comes from the ratio of the impacting velocity(VA) and the rebounding velocity(VB) of the impact body by the moment the spherical testing tip is located at 1mm point from specimen surface.
With principle of electromagnetism,the permanent magnet in the coil of impact device produced an induced voltage, which is in proportion to the impact body velocity.
The leeb hardness values are calculated by the following formula:
HL=1000X(Vb/Va)
Main Application:
Die cavity of molds
Bearings and other parts
Failure analysis of pressure vessel, steam generator and other equipment
Heavy work piece
The installed machinery and permanently assembled parts
Testing surface of a small hollow space
Material identification in the warehouse of metallic materials
Rapid testing in large range and multi-measuring areas for large-scale work piece
It is applicable to big workpieces on-site hardness testing and batch testing on the workpieces in production lines. Moreover, it is also used in metal manufacturing industry, transportation, power station, petrochemical industry, aircraft industry, construction, lab, etc
Working Principle:
When the impact body,with a certain weight,impacts against the specimen surface under the action of spring force,leeb hardness comes from the ratio of the impacting velocity(VA) and the rebounding velocity(VB) of the impact body by the moment the spherical testing tip is located at 1mm point from specimen surface.
With principle of electromagnetism,the permanent magnet in the coil of impact device produced an induced voltage, which is in proportion to the impact body velocity.
The leeb hardness values are calculated by the following formula:
HL=1000X(Vb/Va)
Main Application:
Die cavity of molds
Bearings and other parts
Failure analysis of pressure vessel, steam generator and other equipment
Heavy work piece
The installed machinery and permanently assembled parts
Testing surface of a small hollow space
Material identification in the warehouse of metallic materials
Rapid testing in large range and multi-measuring areas for large-scale work piece
Cover all features and functions of traditional models:
- 7 exchangeable hardness scales (HRA/HRB/HRC/HV/HB/HS/HL);
- 6 selectable impact devices(D/C/G/DC/DL/D+15) available for special usage, automatically identify the type of impact devices;
- 8 kinds of material available, suitable to measure the hardness of all metallic materials;
- Color display (320×240 TFT) with adjustable backlight;
- English displaying and menu operating, the operation is easy and convenient;
- Max 600 groups(impact times:32~1)of data can be stored at internal non volatile data storage;
- Equips lithiumion rechargeable batteries, Continuous working period: approx. 200 h (no back light on);
- With standard data processing software and USB cable, enable to connect to PC and make further data analysis.
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Testing Range
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HLD(200-960),HRC(19.8-68.5), HRB(13.5-100), HRA(59.1-85.8),HB(30-651), HV(80-976), HS(26.4-99.5).
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Hardness Scale
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HL, HB, HRA,HRB, HRC, HV, HS.
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Impact Device
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Standard Type: D, Optional Type: C/G/DC/DL/D+15
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Accuracy
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±6HLD (HLD=800), Repeatability: <10HLD (HLD=800)
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Resolution
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1HL, 1HV, 1HB, 0.1HRA, 0.1HRB, 0.1HRC, 0.1HS
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Testing Direction
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Vertically Downwards, Downward Sloping, Horizontal, Upwardly Sloping, Vertically Upwards
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Display
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Colorful High-definition TFT:320*240 dot matrix
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Available Material
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Steel& Cast Steel, Stainless Steel, GC iron, NC iron, Cast Aluminum alloy, Copper-zinc alloy, Copper-tin alloy, Brass.
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Storage
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600 Groups(each group includes 1-8 testing results and 1 average value)
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Communication
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Standard USB Port
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Data Pro Software
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Standard LmView Software, enable to data admin,store,print,etc.
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Working Temp.
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-10°C—+50°C
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Power Supply
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Lithiumion Rechargeable Batteries
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Dimension
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37x30x12cm (LxWxH)
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Packing Weight
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About 6.0 KG
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Quality Standard
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GB/T 17394-1998, ASTM A956
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Error and Repeatability of Displayed Value:
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No.
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Type of impact device
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Hardness value of Leeb standard hardness block
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Error of displayed value
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Repeatability
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1
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D
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760±30HLD
530±40HLD
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±6 HLD
±10 HLD
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6 HLD
10 HLD
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2
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DC
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760±30HLDC
530±40HLDC
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±6 HLDC
±10 HLDC
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6 HLD
10 HLD
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3
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DL
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878±30HLDL
736±40HLDL
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±12 HLDL
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12 HLDL
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4
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D+15
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766±30HLD+15
544±40HLD+15
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±12 HLD+15
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12 HLD+15
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5
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G
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590±40HLG
500±40HLG
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±12 HLG
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12 HLG
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6
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E
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725±30HLE
508±40HLE
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±12 HLE
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12 HLE
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7
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C
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822±30HLC
590±40HLC
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±12 HLC
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12 HLC
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Testing Range in Different Materials with Different Impact Devices:
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Material
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Method
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Impact device
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D/DC
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D+15
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C
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G
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E
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DL
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Steel and cast steel
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HRC
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20~68.5
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19.3~67.9
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20.0~69.5
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22.4~70.7
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20.6~68.2
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HRB
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38.4~99.6
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47.7~99.9
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37.0~99.9
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HRA
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59.1~85.8
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61.7~88.0
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HB
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127~651
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80~638
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80~683
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90~646
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83~663
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81~646
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HV
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83~976
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80~937
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80~996
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84~1042
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80~950
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HS
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32.2~99.5
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33.3~99.3
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31.8~102.1
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35.8~102.6
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30.6~96.8
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Cold work
tool steel
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HRC
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20.4~67.1
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19.8~68.2
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20.7~68.2
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22.6~70.2
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HV
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80~898
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80~935
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100~941
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82~1009
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Stainless steel
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HRB
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46.5~101.7
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HB
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85~655
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HV
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85~802
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Grey cast iron
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HRC
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HB
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93~334
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92~326
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HV
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Nodular cast iron
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HRC
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HB
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131~387
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127~364
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HV
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Cast aluminum alloys
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HB
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19~164
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23~210
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32~168
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HRB
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23.8~84.6
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22.7~85.0
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23.8~85.5
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BRASS(copper-zinc alloys)
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HB
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40~173
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HRB
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13.5~95.3
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BRONZE(copper-aluminum/tin alloys)
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HB
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60~290
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Wrought copper alloys
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HB
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45~315
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Testing Parameter of Impact Devices:
Specification of Supporting Rings:
Standard Packing Accessories:
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No.
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Items
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Qty.
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1
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DH300 Main Unit
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1
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2
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D Type Impact Device
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1
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3
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Standard Hardness Block
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1
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4
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Cleaning Brush
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1
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5
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Small Support Ring
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1
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6
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Charger
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1
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7
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Manual, Warranty Card, Quality Certificate |
1 each
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8
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Data Pro Software and USB Cable
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1
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9
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Package Case
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1
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Optional Accessories:
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No.
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Items
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Notes
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1
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Impact Device
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(D/C/G/DC/DL/D+15)
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2
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Impact Body
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For all Types: D/C/G/DC/DL/D+15
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3
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Cable for Impact Device
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1.5M long,3-pin cable
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4
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Supporting Ring
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Standard Type and Special Type, 12pcs/set |
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5
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Data Processing Software & USB Cable |
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6
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Standard Leeb Hardness Testing Block |
750-850HLD,590-670HLD,490-570HLD,550-630HLG,460-540HLG
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7
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Protective Rubber Sheath |
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8
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Belt
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1.2 M Long
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9
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Instrument Case
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35x28x10cm(LxWxH)
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Standard Leeb Hardness Testing Block:
Impact Devices(D/C/DC/DL/D+15/E/G)
Cables for Impact Device(1.5M in Length):
Impact Body (D/C/DC/DL/D+15/E/G):
Supporting Rings(12 pcs. each set):
Multi-functions(query,saving,statistics,bar graph displaying) data proceeding software.
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