YB/T 173-2000 Test method for specific resistivity of carbon-containing refractory products at room temperature

This standard specifies the definition, test principle, equipment and materials, specimens, test procedures, result calculation and test report of carbon-containing refractory products at room temperature. This standard is applicable to the determination of carbon-containing refractory products at room temperature. YB/T 173-2000 Test method for carbon-containing refractory products at room temperature YB/T173-2000 Standard download decompression password: www.bzxz.net

ICS81.080
Ferrous Metallurgy Industry Standard of the People's Republic of China YB/T 173
Testing method for cold specific resistivity of carbon-containing refractory products2000-07-26Promulgated
Promulgated by State Bureau of Metallurgy
Implemented on 2000-12-01
YB/T173—2000
This standard refers to ASTM C611-084 Test method for specific resistivity of carbon and graphite electrodes[5R7202—1975 & Test method for graphite electrodes>. Aiming at the fact that refractory products containing refractory materials are homogeneous bodies made of various ingredients with different performances, in order to eliminate and limit the influence of indirect electrical limitations between test elements and test selection, this standard stipulates the clamping device and the clamping strength. This standard is proposed and managed by the National Technical Committee for Comprehensive Standardization of Refractory Materials. The drafting units of this standard are: Yanghuo Material Research Institute, Erhai Pudong Steel (Group) Co., Ltd., and Shanghai Second Nanhuo Village Material Factory. The main drafters of this standard are Yu Huiming, Guo Hua, Sun Sheng, Xiang Fanghan, Ji Shuiye, Liu Lishou, and Tian Shouxin 1 Scope
Standard of the People's Republic of China for Ferrous Metallurgical Industry Testing method for eld speclific resistivityof carbon-contalaing refractory productsY/T 1/32000www.bzxz.net
This standard specifies the definition of room temperature main electric test for refractory products containing molten metal, test principle, equipment and materials, test mixing, test procedures, test duration and test report.
This standard describes the test of main electric test for refractory products containing molten metal. 2 The referenced text contained in a standard shall not be used in the standard. The text shall not be used in the standard. The versions shown are valid at the time of publication of this standard. All references to this standard shall be subject to revision. The following standards shall be used at the latest version of the following standards ... |tt|| indicates the "type" of control force generated by material convection when current passes through the material, expressed as?, 4. The method |tt|| is used to calculate the length of the single-phase DC double-storage power supply according to the type of power supply. 5. Equipment and materials |tt|| 5.1 Tightening device |tt|| is used for both test station and test station. Before the test, it is required to connect the larger end of the test fence to the compression area of ​​3. MPa, see Figure 1, the clamping force can be achieved on this standard, and the output can be expanded by limiting the pressure. 5.1.1 Test band C.2 Cut II silver-plated copper weight Its shape and size should be ten sample end faces, and the surface should be ~ smoothed. 5.1.2 The thickness of the plate is 3m.
51.3 Ten thousand alliance paper hard ~% thickness 0.3mm.
5.2 Full double-arm electrolysis measurement range 0.00011--112. The accuracy level should not be lower than the element 5.3 The pressure sensor shall be within ±1% of the pressure display value. 5.4 Copper sensitive, cross-sectional area 4mm, connection method 1. The male end of the copper plated ... t||1 Pressure head 12 Plastic insulation board 1 Rubber anti-corrosion auxiliary belt 1: 5 Stone plastic system: 5 A test details DC effect external 13 A measurement teaching line diagram 1 Press the bone and line fast connection
5.5 Vernier ruler, accuracy 0.05ml.
5.6 Plug k pregnancy 0.1am.
5.7 Ruler.
6 Sample
6. The sample is a rectangular piece, pay attention to the pipe, try to be a source brick (piece). The test is based on the test equipment. The number of samples is not less than 6, and the delivery needs to be determined by both parties 6-2 The direction of the flow migration during actual use is marked on the sample. Two parallel and parallel end faces should be machined on the two test pieces in the vertical direction. The parallelism of the end faces should be checked by measuring the test pieces at 4 points. The measuring points are the intersections of two mutually perpendicular lines on the end face of the test piece and the thread. The height difference of the test piece at two measuring points on each line should not exceed 1% of the distance between the two points. The whole end face should be measured with a ruler and a ruler. The distance between the ruler and the end face should not exceed 0.1mm. 6.3 The test piece should have obvious depressions and no surface marks. When using the ruler, the calibration, missing corners and patterns should comply with the provisions of 4.2 of Y/T4074-1991.
7 Operation steps
7.1 Surface treatment: Measure the test piece, accurate to the center of the triangle. According to the relevant formula for the geometry, calculate the product of the vertical current passing through the test piece.
1.2 The test piece is baked at 25° for less than 10 minutes. Cool naturally to room temperature. 7.3 Place two test samples in Figure 1, apply appropriate pressure to fix them, 7.4 Transmission rate, power supply, check, power supply, quick verification, 7.5 According to the requirements of the formula 5.1, apply pressure and maintain the verification. 7.6 Repeatedly measure the sample resistance. . Plan the direction of the grid and measure the resistance, calculate the average value of the 6 single values, 2
8 Result calculation
YB/T1732000
The specific resistance of the sample is in m, calculated by the formula (): PR.A/
Where: R
The resistance of the sample,
1—the cross-sectional area of ​​the test sample, m;
t—the length of the sample, t.
The calculated results are combined into three effective supply values. The test report shall include: a) Test unit 1) Test item name and implementation standard 2) Test item name, quantity and number 3) Test sample shape, length, end area, average cross-sectional area 4) Test sample voltage and relative voltage g) Test unit h) Test personnel i) Test equipment
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