龙虎国际娱乐网址

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        1. 龙虎国际娱乐网址主营:Taber耐磨试验机,马丁代尔摩擦试验机,PV1210盐雾循环试验箱,ATLAS氙灯老化试验机,38DLPLUS超声波测厚龙虎国际娱乐网址
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          技术文章
          DIN EN ISO11997-1色漆和清漆抗循环腐蚀标准
          2018-11-24
          DIN EN ISO11997-1色漆和清漆抗循环腐蚀标准
          色漆和清漆.耐周期性腐蚀的测定.第1部分:湿(盐雾)/干燥/湿度影响试验

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          L24

          L7

           

           

                                                             Cycle A

          C.1 Salt fog test solution

          Prepare the spray solution as described in Clause 5 by dissolving sodium chloride in water to give a concentration of (50±10)g/l .The PH of the solution shall be in the range 6 to 7.

           

          C.2 Cycle

          Set up the cabinet to perform the following cycle.

           

          Step

          Time H

          Temp

          Condition

          Notes

          1

          2

          35±2

          Salt spray

           

          2

          4

          60±2

          Dry20-30%

           

          3

          2

          50±2

          Wet95%RH or over

           

          4

          Go back to step 1

          This makes a total cycle time of 8h from step1 to step3

           

          Transtition timeie time allowed to reach the temperature and relative humidity specified for a condition after changing to that condition):

          From salt spray to drywithin 30min

          From dry to wetwithin 150 min

          From wet to salt spraywithin 30min

          The effect of the salt spray willin principlebe instaneous

          For details of drying-air flowsee 6.4

          NOTE  Set points and operational fluctuations can be listed either independently of each other or in the formatset point±operational fluctuations.The set point is the target condition for the sensor when used at the operational control point as programmed by the user.Operational fluctuations are deviations from the indicated set point at the control point indicated by the readout of the calibrated control sensor during equilibrium operation and do not include measurement uncertainty.At the operational control point , the user programmes that exat number . The operational fluctuations specified for that set point do not imply that the user is allowed to programme a set point higher or lower than the exact set point specified.

           

          C3 Salt fog depsiton rate

          The salt fog depp rate shall be 1ml/h to 2ml/h,when the salt fog iscollected over a 24h period (see Clause 10)

          C 4 Duration

          Unless otherwise agreedrepeat the test cycle for 30 cycles(240h),60cycles(240h),90cycles(720h) or 180cycles(1440h)

           

           

           

           

           

           

           

                                       Cycle B

          C.1 Salt fog test solution

          Prepare the spray solution as described in Clause 5 by dissolving sodium chloride in water to give a concentration of (50±10)g/l .The PH of the solution shall be in the range 6 to 7.

           

          C.2 Cycle

          Set up the cabinet to perform the following cycle.

          Step

          Time

          Temp

          Condition

          notes

          1

          24

          35±2

          Salt fog

           

          2

          8

          40±2

          100%RH

          Water condensing on test panels

          3

          16

          23±2

          50±20%RH

           

          4

          8

          40±2

          100%RH

          Water condensing on test panels

          5

          16

          23±2

          50±20%RH

           

          6

          8

          40±2

          100%RH

          Water condensing on test panels

          7

          16

          23±2

          50±20%RH

           

          8

          8

          40±2

          100%RH

          Water condensing on test panels

          9

          16

          23±2

          50±20%RH

           

          10

          48

          23±2

          50±20%RH

           

          11

          Go back to step 1

          This makes the total cycle time 7 days from step1 to step10.

          NOTE  Set points and operational fluctuations can be listed either independently of each other or in the formatset point±operational fluctuations.The set point is the target condition for the sensor when used at the operational control point as programmed by the user.Operational fluctuations are deviations from the indicated set point at the control point indicated by the readout of the calibrated control sensor during equilibrium operation and do not include measurement uncertainty.At the operational control point , the user programmes that exat number . The operational fluctuations specified for that set point do not imply that the user is allowed to programme a set point higher or lower than the exact set point specified.

           

           

          C3 Salt fog depsiton rate

          The salt fog depp rate shall be 1ml/h to 2ml/h,when the salt fog iscollected over a 24h period (see Clause 10)

          C 4 Duration

          Unless otherwise agreedrepeat the test cycle for 840 h

           

           

           

           ECS2017_3
           

           

           

           

           

           

                                          Cycle C

          C.1 Salt fog test solution

          Prepare the spray solution as described in Clause 5 by dissolving sodium chloride in water to give a concentration of (0.31±0.01)g/l and (4.1±0.01)g/l respectively  .The PH of the solution shall be in the range 6 to 7.

           

          C.2 Cycle

          Set up the cabinet to perform the following cycle.

          Step

          Time

          min

          Temp

          Condition

          notes

          1

          210

          30±2

          Salt fog

           

          2

          210

          40±2

          Dry

          Drying-air purge(see 6.4)

          3

          1470

          40±2

          75±15%RH

          One method of achieving this conditon is to alternate the dry and humid cycles for suitable(short)time periods to keep the RH between the limits specified

          4

          102

          30±2

          Dry

          Drying-air purge(see 6.4)

          5

          210

          30±2

          Salt fog

           

          6

          378

          30±2

          90% to 100%RH

          Water condensing on test panel

          7

          180

          35±2

          Dry

          Drying-air purge(see 6.4)

          8

          120

          25±2

          Dry

           

          9

          Go back to step 1

          This makes the total cycle time 48h from step1 to step8.

          NOTE  Set points and operational fluctuations can be listed either independently of each other or in the formatset point±

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