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为了研究含硫油气田开发中的金属腐蚀和评价缓蚀剂抑制钢材氢脆的性能,设计安装了简易试样(片)弯折断裂试验自动记录仪(以下简称仪表)。仪表采用试验室常用仪器UJ36型电位差计,作补偿法调零与直流信号放大。容易装配,成本低,稳定性好。 1 主要技术指标 (1)弯折频率:5～20次/min (2)弯折角度:10°～90° (3)最大弯折力:-200～+200N; (4)弯折力灵敏度:0.5N; (5)重复误差±1%; (6)记录仪量程:-5～+5mV; (7)衰减范围:1/1、1/2、1/4、1/8、0。 2 原理和安装用两只8120型应变电阻丝片与R_3和R_4组成应力测量电桥,测试杆工作时产生的应力,由应变片变成
In order to study the metal corrosion in the development of sulfur-containing oil and gas fields and to evaluate the performance of corrosion inhibitors in inhibiting the hydrogen embrittlement of steel, a simple specimen (sheet) bending and fracture test automatic recorder (hereinafter referred to as instrument) was designed and installed. UJ36 instrument commonly used in laboratory instruments Potentiometer, for compensation zero and DC signal amplification. Easy to assemble, low cost, good stability. 1 The main technical indicators (1) bending frequency: 5 to 20 times / min (2) Bending angle: 10 ° ~ 90 ° (3) Maximum bending force: -200 ~ +200 N; : 0.5N; (5) repeat error of ± 1%; (6) recorder range: -5 ~ +5 mV; (7) attenuation range: 1 / 1,1/2, 1/4, 1/8, 2 Principle and Installation With two 8120-type strain gauge wire and R_3 and R_4 stress measurement bridge, test bar work stress generated by the strain gauge into