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The application of striking elements

The striking elements are the core components in the IK mechanical impact tests, the striking element shall be release from a height specified in table 2 of IEC60068-2-75, the corresponding impact energy will be generated.

The striking elements and pendulum arm can compose to pendulum hammers; the striking elements and release system can compose to spring hammers; the striking elements fall freely from a vertical height, that is vertical hammers.

Items

IK00

IK01~IK05

IK06

IK07

IK08

IK09

IK10

IK11

Energy in joules

*

1

1

2

5

10

20

50J

R in mm

*

10

10

25

25

50

50

50

Material

*

Polyamide

Steel

Mass in kg

*

0.2

0.5

0.5

1.7

5

5

10

D in mm

*

20

25

35

60

80

100

125

f in mm

*

10

4

7

10

20

20

25

r in mm

*

-

2.5

-

6

-

10

17

I in mm

*

57.5

120

60

65

110

63

125

Pendulum hammer

*

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Spring hammer

*

Yes

Yes

Yes

No

No

No

No

Free-fall hammer

*

no

no

Yes

yes

Yes

Yes

Yes

Height of fall

 

0.4m

0.3m

0.2m

0.4m

0.5m

*No Protection

 


The striking elements for severities not exceeding 1J tests is made of polyamide, for severities 2J and above tests is made of steel. The pendulum impact test apparatus is mainly consisted by striking elements, test rig, pendulum rods. The vertical impact test apparatus is mainly consisted by striking elements, test rig, fixed-height guideways. The spring hammer test apparatus is mainly consisted by striking element, the body and the release system. 

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vertical impact hammers

The vertical impact hammer is designed according to IEC60068-2-75 test Ehc, the hammer consists by a striking element which falls freely from rest through a vertical height on to the specimen surface held in a horizontal plane, and the fall of the striking element shall be along a guideway, the guideway shall not rest on the specimen and the striking element shall be free of the guideway on the striking the specimen , the mass of striking element is equal to equivalent mass . 2J striking element equip with Φ 40 mm*4 71 mm guideway, 5J striking element equip with Φ6 8 mm*3 85 mm guideway, 10J striking element equip with Φ8 9 mm* 337 mm guideway, 20J striking element equip with Φ10 8 mm* 520 mm guideway, 50J striking element equip with  Φ12 9 mm* 650 mm guideway. 

JIS D0203 rain nozzle and spray nozzle test chamber

https://www.pegotester.com/JISD0203_rain_and_spray_test_chamber.html The spray nozzle and rain nozzle test chamber is designed to meet the test requirements of JISD0203 R1/R2 rain test and S1/S2 spray test. The rain nozzle has 2 holes and spray nozzle has 40 holes. Type Symbol Test Purpose Test Method Rain Test R1 Auto parts against water direct contact water pressure: 0.01Mpa, water flow: 1.9L/min, water temperature: ordinary temperature, test time: 10min R2 Auto parts against rain or spray water   indirect contact water pressure: 0.03Mpa, water flow: 3.2L/min, water temperature: ordinary temperature, test time: 10min Spray Test S1 Auto parts against rain or jet water direct contact water pressure: 0.10Mpa, water flow: 24.5L/min, water temperature: ordinary temperature, test time: 30min S2 Auto parts against riptide water pressure: 0.30Mpa, water flow: 39.2L/min, water temperature: ordinary temperature, test time: 1h  

The relationship between standards IEC62262 and IEC60068-2-75

  The IK code is a coding system to indicate the degree of protection provided by an enclosure against harmful external mechanical impacts. The standard IEC62262 defines the impact energy corresponding to different IK codes. In general, the degree of protection applies to the complete enclosure. If parts of the enclosure have differing degrees of protection, the latter shall be indicated separately. IK00 IK01 IK02 IK03 IK04 IK05 IK06 IK07 IK08 IK09 IK10 IK11 0 0.14J 0.2J 0.35J 0.5J 0.7J 1J 2J 5J 10J 20J 50J IK00 - no protection IK01 - withstands 0.14J impact force (equivalent to the impact of an object weighing 0.25KG falling from a height of 56mm on the surface) IK02 - Withstand 0.2J impact force (equivalent to the impact of an object weighing 0.25KG falling from a height of 80mm on the surface) IK03 - Withstand 0.35J impact force (equivalent to the impact of an object weighing 0.2KG falling from a height of 140mm on the surface) IK04 - Withstand 0.5J impact force (equivalent to t...