根据GB/T 10125-2015及委托方给定技术条件,将牌号级别的Q460的四个规格10mm、14mm、20mm、28mm进行中性盐雾试验,每个规格10个试样分为2组,对比试样为Q235规格为16mm,试验时间72h。对比试样的腐蚀率为1.8-2.1g/m2h,四种规格的试样腐蚀率随着规格变大略有变大,变化幅度不大。
According to GB / T 10125-2015 and the technical conditions given by the client, conduct neutral salt spray test on four specifications of 10mm, 14mm, 20mm and 28mm of brand grade Q460. 10 samples of each specification are divided into two groups, the comparison sample is Q235, the specification is 16mm, and the test time is 72h. The corrosion rate of the comparison sample is 1.8-2.1g/m2h. The corrosion rate of the four specifications increases slightly with the specification.