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Honors
|
Product : Portable Hardness Tester
Model : DH90
Country of Origin : CHINA
Brand : DTEC
Quality Certified : ZBN71010-1990, GB/T 17394-1998, JB/T9378-2001.
Delivery Time : 3 days
Packing Weight : 6KG
Dimension : 37x30x12cm(LxWxH)
Package Type : Maker's Standard Export Carton
Courier : DHL/TNT/FedEx/UPS/EMS/Shipping Agent
Payment Term : TT100%/Private Bank Account/L/C/Paypal/Western Union
 |
- Product Intro
- Feature
- Specification
- Packing List
DH90 Portable Hardness Tester is an economical and foundational model among all, it is a international qualified leeb hardness testing machine conform to standard such as ZBN71010-1990, GB/T 17394-1998, JB/T9378-2001.
The equipment comes with standard RS232 communication cable, which enable it to connect to PC to do data print.
Similarly, It has dot matrix screen, which can display not only figure but also character. Customers who do the test without printing on-site, at the same time, considering about the purchase budget, this is the right choice.
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.
Material Applicable:
Sheet 1
Sheet 2
The equipment comes with standard RS232 communication cable, which enable it to connect to PC to do data print.
Similarly, It has dot matrix screen, which can display not only figure but also character. Customers who do the test without printing on-site, at the same time, considering about the purchase budget, this is the right choice.
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.
Material Applicable:
Sheet 1
|
Material
|
Method
|
Impact device
|
|||||
|
D/DC
|
D+15
|
C
|
G
|
E
|
DL
|
||
|
Steel and cast steel
|
HRC
|
20～68.5
|
19.3～67.9
|
20.0～69.5
|
|
22.4～70.7
|
20.6～68.2
|
|
HRB
|
38.4～99.6
|
|
|
47.7～99.9
|
|
37.0～99.9
|
|
|
HRA
|
59.1～85.8
|
|
|
|
61.7～88.0
|
|
|
|
HB
|
127～651
|
80～638
|
80～683
|
90～646
|
83～663
|
81～646
|
|
|
HV
|
83～976
|
80～937
|
80～996
|
|
84～1042
|
80～950
|
|
|
HS
|
32.2～99.5
|
33.3～99.3
|
31.8～102.1
|
|
35.8～102.6
|
30.6～96.8
|
|
|
Cold work
tool steel
|
HRC
|
20.4～67.1
|
19.8～68.2
|
20.7～68.2
|
|
22.6～70.2
|
|
|
HV
|
80～898
|
80～935
|
100～941
|
|
82～1009
|
|
|
|
Stainless steel
|
HRB
|
46.5～101.7
|
|
|
|
|
|
|
HB
|
85～655
|
|
|
|
|
|
|
|
HV
|
85～802
|
|
|
|
|
|
|
|
Grey cast iron
|
HRC
|
|
|
|
|
|
|
|
HB
|
93～334
|
|
|
92～326
|
|
|
|
|
HV
|
|
|
|
|
|
|
|
|
Nodular cast iron
|
HRC
|
|
|
|
|
|
|
|
HB
|
131～387
|
|
|
127～364
|
|
|
|
|
HV
|
|
|
|
|
|
|
|
|
Cast aluminum alloys
|
HB
|
19～164
|
|
23～210
|
32～168
|
|
|
|
HRB
|
23.8～84.6
|
|
22.7～85.0
|
23.8～85.5
|
|
|
|
|
BRASS(copper-zinc alloys)
|
HB
|
40～173
|
|
|
|
|
|
|
HRB
|
13.5～95.3
|
|
|
|
|
|
|
|
BRONZE(copper-aluminum/tin alloys)
|
HB
|
60～290
|
|
|
|
|
|
|
Wrought copper alloys
|
HB
|
45～315
|
|
|
|
|
|
Sheet 2
|
No.
|
Material
|
HLD
|
σb(MPa)
|
|
1
|
High C Steel
|
350-522
|
374-780
|
|
2
|
Low C Steel
|
500-710
|
737-1670
|
|
3
|
Cr Steel
|
500-730
|
707-1829
|
|
4
|
CrV Steel
|
500-750
|
704-1980
|
|
5
|
CrNi Steel
|
500-750
|
763-2007
|
|
6
|
CrMo Steel
|
500-738
|
721-1875
|
|
7
|
CrNiMo Steel
|
540-738
|
844-1933
|
|
8
|
CrMnSi Steel
|
500-750
|
755-1993
|
|
9
|
SSST Steel
|
630-800
|
1180-2652
|
|
10
|
Stainless Steel(SST)
|
500-710
|
703-1676
|
► 128×64 Dot Matrix LCD Large Digital screen, displaying both figures and character, with EL background light;
►6 Exchangeable hardness scales: HRB, HRC, HV, HB, HS, HL, suitable to measure the hardness of all metallic materials;
►7 impact devices available for special usage, automatically identify the type of impact devices;
►48-350 groups storage capacity with impact times: 32-1,including single measured value, average value, testing data, impact direction, impact times, material and hardness scale etc;
►Come along with RS232 communication cable, connect machine into PC, enable to do data print;
►Optional multi-functional data processing software, ensure a higher testing requirement and data administration;
►Freely set limited hardness value, AUTO alarming when over-limited;
►High performance lithium battery, with continuous working time of 100 hours(EL light off) as well as real-time indication of power supply;
►Particularly ask for any operation instruction by the HELP key;
►Excellent after-sale service system for high quality products---two years’ guarantee and all life maintenance. Easy to buy and convenient to use.
►6 Exchangeable hardness scales: HRB, HRC, HV, HB, HS, HL, suitable to measure the hardness of all metallic materials;
►7 impact devices available for special usage, automatically identify the type of impact devices;
►48-350 groups storage capacity with impact times: 32-1,including single measured value, average value, testing data, impact direction, impact times, material and hardness scale etc;
►Come along with RS232 communication cable, connect machine into PC, enable to do data print;
►Optional multi-functional data processing software, ensure a higher testing requirement and data administration;
►Freely set limited hardness value, AUTO alarming when over-limited;
►High performance lithium battery, with continuous working time of 100 hours(EL light off) as well as real-time indication of power supply;
►Particularly ask for any operation instruction by the HELP key;
►Excellent after-sale service system for high quality products---two years’ guarantee and all life maintenance. Easy to buy and convenient to use.
|
Testing Range
|
HLD(170-960),HRC(19.8-68.5), HRB(13.5-100), HB(30-651), HV(80-976), HS(26.4-99.5), σb (375-2639). |
|
Hardness Scale
|
HL, HB, HRB, HRC, HV, HS
|
|
Impact Device
|
Standard Type: D, Optional Type: C/G/DC/DL/D+15 |
|
Testing Direction
|
360 Degree by Manual Setting
|
|
Display
|
128×64 Dot Matrix LCD Large Digital screen, displaying both figures and character. |
|
Available Material
|
Steel& Cast Steel, Stainless Steel, GC iron, NC iron, Cast Aluminum alloy, Copper-zinc alloy, Copper-tin alloy, Brass. |
|
Storage
|
48-350 Groups (Impact times:32-1) |
|
Communication
|
RS232
|
|
Working Hours
|
100 Hours with Black Light Off
|
|
Power Supply
|
Lithium Battery 4.2V 1200mAh
|
|
Dimension
|
37x30x12cm (LxWxH)
|
|
Packing Weight
|
About 6.0 KG
|
|
Quality Standard
|
ZBN71010-1990, GB/T 17394-1998, JB/T9378-2001 |
Error and Repeatability of Displayed Value:
|
No.
|
Type of impact device
|
Hardness value of Leeb standard hardness block
|
Error of displayed value
|
Repeatability
|
|
1
|
D
|
760±30HLD
530±40HLD
|
±6 HLD
±10 HLD
|
6 HLD
10 HLD
|
|
2
|
DC
|
760±30HLDC
530±40HLDC
|
±6 HLDC
±10 HLDC
|
6 HLD
10 HLD
|
|
3
|
DL
|
878±30HLDL
736±40HLDL
|
±12 HLDL
|
12 HLDL
|
|
4
|
D+15
|
766±30HLD+15
544±40HLD+15
|
±12 HLD+15
|
12 HLD+15
|
|
5
|
G
|
590±40HLG
500±40HLG
|
±12 HLG
|
12 HLG
|
|
6
|
E
|
725±30HLE
508±40HLE
|
±12 HLE
|
12 HLE
|
|
7
|
C
|
822±30HLC
590±40HLC
|
±12 HLC
|
12 HLC
|
Testing Range in Different Materials with Different Impact Devices:
|
Material
|
Method
|
Impact device
|
|||||
|
D/DC
|
D+15
|
C
|
G
|
E
|
DL
|
||
|
Steel and cast steel
|
HRC
|
20～68.5
|
19.3～67.9
|
20.0～69.5
|
|
22.4～70.7
|
20.6～68.2
|
|
HRB
|
38.4～99.6
|
|
|
47.7～99.9
|
|
37.0～99.9
|
|
|
HRA
|
59.1～85.8
|
|
|
|
61.7～88.0
|
|
|
|
HB
|
127～651
|
80～638
|
80～683
|
90～646
|
83～663
|
81～646
|
|
|
HV
|
83～976
|
80～937
|
80～996
|
|
84～1042
|
80～950
|
|
|
HS
|
32.2～99.5
|
33.3～99.3
|
31.8～102.1
|
|
35.8～102.6
|
30.6～96.8
|
|
|
Cold work
tool steel
|
HRC
|
20.4～67.1
|
19.8～68.2
|
20.7～68.2
|
|
22.6～70.2
|
|
|
HV
|
80～898
|
80～935
|
100～941
|
|
82～1009
|
|
|
|
Stainless steel
|
HRB
|
46.5～101.7
|
|
|
|
|
|
|
HB
|
85～655
|
|
|
|
|
|
|
|
HV
|
85～802
|
|
|
|
|
|
|
|
Grey cast iron
|
HRC
|
|
|
|
|
|
|
|
HB
|
93～334
|
|
|
92～326
|
|
|
|
|
HV
|
|
|
|
|
|
|
|
|
Nodular cast iron
|
HRC
|
|
|
|
|
|
|
|
HB
|
131～387
|
|
|
127～364
|
|
|
|
|
HV
|
|
|
|
|
|
|
|
|
Cast aluminum alloys
|
HB
|
19～164
|
|
23～210
|
32～168
|
|
|
|
HRB
|
23.8～84.6
|
|
22.7～85.0
|
23.8～85.5
|
|
|
|
|
BRASS(copper-zinc alloys)
|
HB
|
40～173
|
|
|
|
|
|
|
HRB
|
13.5～95.3
|
|
|
|
|
|
|
|
BRONZE(copper-aluminum/tin alloys)
|
HB
|
60～290
|
|
|
|
|
|
|
Wrought copper alloys
|
HB
|
45～315
|
|
|
|
|
|
Testing Parameter of Impact Devices:
Specification of Supporting Rings:
Standard Packing List:
|
No.
|
Items
|
Qty.
|
Remarks
|
|
1
|
DH90 Main unit |
1
|
|
|
2
|
D type impact device |
1
|
With cable
|
|
3
|
Standard Hardness Block |
1
|
|
|
4
|
Cleaning brush (I) |
1
|
|
|
5
|
Small support ring |
1
|
|
|
6
|
Battery Charger |
1
|
|
|
7
|
Manual Book, Warranty Card, Quality Certificate |
1
|
|
|
8
|
RS232 Communication cable |
1
|
|
|
9
|
Package Case
|
1
|
|
Optional Accessories:
Impact Devices(D/C/DC/DL/D+15/G)
3-Pin Cable for Impact Device (D/C/DC/DL/D+15/G), 1.5M in length
Impact Body (D/C/DC/DL/D+15/G)
Supporting Rings(12 pcs. each set)
Specification of Supporting Rings:
Data Processing Software (including USB cable)
Standard Leeb Hardness Testing Block
Blue Tooth Wireless Thermal Mini Printer
|
No.
|
Items
|
Notes
|
|
1
|
Impact Device
|
(D/C/G/DC/DL/D+15)
|
|
2
|
Impact Body
|
For all Types: D/C/G/DC/DL/D+15
|
|
3
|
Cable for Impact Device
|
1.5M long,3-pin cable
|
|
4
|
Supporting Ring
|
Standard Type and Special Type, 12pcs/set |
|
5
|
Data Processing Software & USB Cable |
|
|
6
|
Standard Leeb Hardness Testing Block |
750-850HLD,590-670HLD,490-570HLD,550-630HLG，460-540HLG
|
|
7
|
Blue Tooth Wireless Thermal Mini Printer |
|
|
8
|
Belt
|
1.2 M Long
|
|
9
|
Instrument Case
|
35x28x10cm(LxWxH)
|
Impact Devices(D/C/DC/DL/D+15/G)
3-Pin Cable for Impact Device (D/C/DC/DL/D+15/G), 1.5M in length
Impact Body (D/C/DC/DL/D+15/G)
Supporting Rings(12 pcs. each set)
Specification of Supporting Rings:
Data Processing Software (including USB cable)
Standard Leeb Hardness Testing Block
|
Items
|
Size
|
Dimension
|
Product Picture
|
|
|
750-850HLD
|
Ф 90 × 55 mm |
  |
|
590-670HLD
|
|||
|
490-570HLD
|
|||
|
550-630HLG
|
Ф120 × 70 mm |
||
|
460-540HLG
|
|||
|
AA Grade Leeb Hardness Standard Block |
750-850HLD
|
Ф 90 × 55 mm |
  |
|
590-670HLD
|
|||
|
490-570HLD
|
|||
|
550-630HLG
|
Ф120 × 70 mm |
||
|
460-540HLG
|
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