test coupon

When flow velocity reaches 2.62 m/ s, the local corrosion is pitting corrosion and the protective corrosion product film can not form on the test coupon surface at the temperature of 100 ℃ and the CO_2 pressure of 0.03 MPa.

在流体速度为2.62m/s的情况下，温度为100℃、CO2分压为0.03MPa时，发生的局部腐蚀主要为点蚀，试样表面未能形成保护性腐蚀产物膜；

Generally, the procedure qualification test shall be carried out on the product, or on the relevant test coupon.

工艺评定试验一般应在产品上进行，也可在相应的试块上进行。

A Welding Procedure Qualification Record ( Form No.: FN09/ 02-02) is a record of the welding data used to weld a test coupon.

焊接程序检定记录（表号：FN09/02-02）为焊接数据记录文件，用于附体试片的焊接操作。

Renewal of qualification may be made for any process by welding a single test coupon of either plate or pipe, and by testing of that coupon as required by QW-301 and QW-302.

如需重新获得资质，则该焊工需要遵照QW-301和QW-302的要求，在一个板材附件试片，或一个管材附件试片上，进行焊接试验。

Consideration of Standard on Mechanical Properties Test of Welding Coupon of Pressured Equipment

对承压设备产品焊接试件的力学性能检验标准的思考

To test resistor R 1, first energize Ch. 1 to bias the test coupon.

若要测试电阻器R1, 首先激励通道1,向测试样板加电压.

The laboratory assessment tests showed that, at a concentration of 60 mg/ 1, the corrosion rate of test coupon was 0.029 mm/ yr and the cohesion rate was 4.32 mcm, which were at the best levels.

实验室评定表明：在药剂浓度为60mg/L的情况下，碳钢试样的腐蚀率为0.029mm，a，粘附速度为4.32mcm，均达到很好级；