HG/T 2378-1992 Test method for tensile strength of graphite adhesive HG/T2378-1992 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T 2378 --92
Graphite Adhesive Bonding Tensile Strength
Test Method
Published on September 15, 1992
Ministry of Chemical Industry of the People's Republic of China
Standard Connection Network x.520:0om1993-07-01Implementation
Chemical Industry Standard of the People's Republic of China
Graphite Adhesive Bonding Tensile Strength
Test Method
Subject Content and Scope of Application
HG/T2378-92
This standard specifies the instrumentation, specimens, test procedures and result processing methods for the graphite adhesive bonding tensile strength test. This standard is applicable to the determination of the bonding tensile strength of graphite materials bonded with an applicable adhesive. 2 Reference standards
GB/T13465.1 General principles for mechanical properties test methods of impermeable graphite materials 3 Terms and terms
3.1 Graphite adhesives - phenolic graphite mastic or other suitable adhesives used to bond graphite materials 3.2 Bonding tensile strength - the tensile force per unit bonding surface when the bonding surface breaks when the graphite materials are bonded with adhesives under the action of a tensile force perpendicular to the bonding surface. 4 Instruments and equipment
4.1 Vernier caliper: range 0~150mm, graduation value 0.02mm, 4.2 Material testing machine: measurement accuracy not less than Class 1 or error not exceeding 1%. 4.3 Fixture device as shown in Figure 1
Ministry of Chemical Industry of the People's Republic of China 1992-09-15 Approved Standard Change According to the website www.basoso.com Various standards Oil industry information free download 1993-07-01 Implementation||t t||5 Test specimen
IIG/T2378--92
Figure 1 Schematic diagram of the fixture
Bond surface
1-chuck body; 2-pin; 3-chain; 4-chuck; 5-jacket; 6-screw; 7-chuck core; 8-test specimen: 9-pin 5.1 The shape and size of the test specimen are shown in Figure 2
5.2 When the blank is an impermeable graphite material, it is bonded after rough machining and then fine-machined to the requirements of Figure 2. 5.3 When the blank is a permeable or semi-permeable material, it is rough-machined, bonded, impregnated, cured and heat-treated to impermeable, and then fine-machined to the requirements of Figure 2.
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Adhesive surface
HG/T2378-92
5.4 The number of specimens in each group should be no less than 5
6 Test steps
Figure 2 Specimen shape and size
Total remainder 6.3
Example Angle 1.5×45°
6.1 Measure the diameter of the adhesive surface. On the adhesive section perpendicular to the axis of the specimen, use a vernier caliper along the position of 60° to each other, measure 3 times, and take the average value
6.2. Select the appropriate range of the testing machine so that the maximum breaking load is within the range of 15% to 85% of the full range of the testing machine. 6.3 Install the specimen according to Figure 1 and adjust the position so that the chain is flexible and free of kinks. 6.4 Start the test machine slowly. The chain should always remain flexible and free of kinks before it is subjected to preload. Apply load evenly and without impact at a speed of 40~50N/s until the sample breaks. Read and record the load value when the sample breaks. 7 Result calculation
7.1 The bonding tensile strength is calculated according to the following formula and rounded to 0.1MPa. p
Where: g-bond tensile strength, MPa:
P—breaking load, N:
A—bond surface area, mm2
1.2 In any of the following cases, the test data is invalid. Only the non-bond surface breaks.
b. "The bonding surface has obvious defects such as pores, inclusions, cracks, etc. 7.3 Each measurement shall obtain valid test data for no less than 3 samples. 7.4 Data processing shall be in accordance with the relevant provisions of GB/T13465.1 8 Test report
The test report shall be in accordance with the relevant provisions of GB/T13465.1, standard mining network mm.b28080.com Additional notes:
This standard was proposed by China Chemical Equipment Corporation HG/T2378-92
This standard is under the jurisdiction of the National Technical Committee for Standardization of Non-metallic Chemical Equipment. This standard was drafted by Nantong Carbon Factory, and the main drafter of this standard was Gao Pengzhang.
From the date of implementation of this standard, the former Ministry of Chemical Industry standard HG5-1333-80 "Test method for bonding strength of graphite phenolic binder" was also used as Waste.
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Chemical Industry Standards
Graphite Adhesive Bonding Tensile Strength Test Method HG/T2378-92
Comprehensive Chemical Industry Standards Comprehensive Department
(Standardization Research Institute of the Ministry of Chemical Industry)
Postal Code: 100013
Printing Chemical Industry Standardization Research Institute
Copyright Exclusive Reproduction is prohibited
Format 880×12301/16 Printing Sheet% Number of Words 7000 Reverse First Printing in July 1993
First Edition in January 1993
Printing Number 1-300wwW.bzxz.Net
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