GB/T 5319-2002 Determination of transverse rupture strength of sintered metal materials (excluding cemented carbide)

This standard specifies the method for determining the transverse rupture strength of sintered or sintered metal materials using rectangular test specimens. This standard is applicable to sintered metal materials with uniform hardness throughout the cross section and very small plasticity (permanent deformation between two support points is less than about 0.5mm). This standard is also applicable to the comparison test between the sintering strength of a batch of metal powders and the sintering strength of reference powders or reference strength. This method is not applicable to cemented carbides. GB/T 5319-2002 Determination of transverse rupture strength of sintered metal materials (excluding cemented carbides) GB/T5319-2002 Standard download decompression password: www.bzxz.net

rC5 77. 040.-0
National Standard of the People's Republic of China
GB/T 53192002
idt1s03325:1996
Sintered metal materials, excluding hardmetals-Determination of transverse rupture strength2002-08-23 Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-03-01 Implementation
GB/T5319—2002
This standard is based on 1S(3225:1996 Determination of intermittent strength of sintered metal mesh materials (excluding cemented carbide)> and revised GB/T5319--1935 Determination of mean intermittent strength of sintered metal mesh materials (excluding cemented carbide)>. It is equivalent to this standard in terms of technology. This standard makes some additions and modifications to GH/T5319-8: Added Section 4.2, requirements for test specimens; Added Section 63, calculation of tolerances: In Section 4.1, the cumulative deviation is not greater than C.4mm; In Section 4.3, it is added that the angle between the test specimen and the axis of the support is 90°; the allowable deviation of permanent deformation is changed from "less than u.3mm" to "less than 0.5inrm"; the diameter of each cylinder in the test clamp is changed from 3.3u31mm to 3.1c.1mm. This standard replaces E19-8 from January 2001. This standard is issued by the State Administration of Nonferrous Metals Industry and is under the jurisdiction of the National Institute of Standard Design and Quality of Nonferrous Metals Industry. The author of this standard is: Beijing Ganghui Research Institute. The main authors of this standard are: Shi Hongyun, Hou Xiang, Liu Bin, and Shi Huiquan. CB/53192002
ISO Foreword
ISO (International Organization for Standardization) is a global association composed of national standardization bodies (ISO members). The work of formulating international standards is usually completed by ISO technical committees. Each member has the right to participate in the work of the technical committee if it is interested in a standard item that has been confirmed by a technical committee. International organizations (official or unofficial) that maintain contact with ISO may also participate in the relevant work. The draft international standard passed by the technical committee is submitted to the voting body for voting. The international standard needs to be read by at least the members who participated in the voting before it is officially approved. The sampling and testing treatment branch of the International Cup Standard 1SD3325 150/TC113/SC Powder Price Technical Table for Sintered Gold Screen Material (excluding crushed alloys) is responsible for formulating. The second edition has made technical revisions to the first edition. The first edition is revoked and replaced by the revised edition. 1 Standard of the People's Republic of China
Sintened metal materials (excluding cemented carbide) - Determination of transverse rupture strength
Sintened metal materials (excluding cemented carbide) - Determination of transverse rupture strength GB/T53197002
idt1so3325.1595
#571919
This standard specifies the method for determining the transverse rupture strength of materials treated after condensation using shaped test specimens. This standard is applicable to sintered metal substrates with a cross-section of approximately 0.5 n/min (the water content between the two supporting points is about 0.5 n/min) with minimum plasticity. The test is not applicable to the test of comparing the strength of the burning salt with the strength of the joint or the reference strength.
Note: The test can be carried out by the growth of the bottom surface of the sample, or by the growth of the sample surface. 2 Principle
Place the sample on the clamp, under the condition of instantaneous static core, apply load at the middle position of the four supporting points, and the sample will break. 3 Equipment
3. 1 Testing machine
Any type of testing machine that can meet the static addition requirements and the accuracy of 31. 3.2 The test fixture consists of two supporting bodies (subs) and a carrying rod (subs) with a certain spacing. The diameter of the supporting bodies is 1.2mm~0.1mm and is made of refractory steel or other composite material with a hardness of not less than 7>HV. The mesh body should be installed in parallel, the center of the two supporting circles is 25.0m (.2mm minus 25.1mm3.2mm measurement technology, this is 0.1mm, the carrier body is installed in the middle of the mesh supporting circle, the mesh sample body should be installed in the middle of the mesh sample body, and the test sample can be installed at the bottom and half of the test sample can be installed. The typical test tool diagram is shown in Figure 1. The test variable is used in the safety protection measures. 3.3 Dimension measuring instrument
dry ruler or other suitable examples or instruments, the accuracy is .31nm. The State Administration of Measurement, Inspection and Testing of the People's Republic of China approved on August 23, 2002. 2003-03.01 implementation
4 test sample
GH/r5319-2002
L- 25 n= 0, 2
Figure 1 Test tool for small details
Small unit: mnl
4.: The nominal size of the inner cavity is 3mm1mm. The test specimen with a thickness of m is guaranteed to have a uniform deviation within the length range of 1.0m and a width deviation of no more than 0.0a.4.2 The machined test specimen can be used. When adding, it is necessary to ensure that no stress concentration source is caused on the finished specimen. The specimen is cut from a 3mm×1? plane perpendicular to the pressing surface. Considering the possible existence of various media, the section with uniform thickness should be selected when cutting the test. In addition, the machining technology used should not be convenient for testing the product and the required changes (for example, the soft material is sheared or the ionization is produced. The processing technology produces these changes. It is recommended to control the rate of change. 5 Steps
5.1 In the test group center The width and sphericity of the stop are 2.01ma5.7. The test piece is 33mm×12mm and placed symmetrically on the support fence. The longitudinal axis of the test piece forms an angle of 9±3Y with the longitudinal axis of the support column. The test piece is broken in a stable and steady manner within a time of not less than 1:1. The number of test pieces when the first wrinkle appears and the load drops suddenly is recorded. 5.3. The test piece is tested with an appropriate number of test pieces F. Usually 10 test pieces are used. 6. Results are expressed in Www.bzxZ.net
6-1. The calculation formula for the simulated fracture strength is: Where:
R.—-interval fracture strength, MPa
Force required for fracture, N
L. Distance from the support point + μm:
Test piece width, mm
Test piece thickness, mn.
GB/T 53192002
6.2 The final result is calculated by taking the arithmetic mean of the test results and accurately listing the nMP:6-3 The inverse uncertainty is calculated by the following formula
01- 0.01 1 2
AR = C.32R
To obtain accurate test results, the uncertainty should be taken into account. 7 Test report
The test report shall include the following contents
of this standard
b) Details required for identification of the specimen:
1) Distance between the centers of the supporting cylinders:
) Test results:
Operations not specified in this standard
[) Any circumstances that may affect the test results: 6
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