This part is a part of GB/T2423 "Environmental testing for electric and electronic products Part 2: Test methods", which is equivalent to IEC60068-2-77:1999 "Environmental testing Part 2: Test methods Test 77: Structural strength and impact test" (English version). GB/T 2423.52-2003 Environmental testing for electric and electronic products Part 2: Test methods Test 77: Structural strength and impact GB/T2423.52-2003 Standard download decompression password: www.bzxz.net

ICS 19.040
National Standard of the People's Republic of China
GB/T 2423.52——2003/1EC 60068-2-77,1999Environmental testing for electric and electrionic productsPart 2:Test methods-Test 77:Body strength and impact shu:k(IEC: 6oc68-2-7711999,Ervironnentl testin -Part 2 77:Test Teat 77-Bndy x.rengl an inpaet snoek.y) Issued on November 24, 2003
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on August 1, 2004
GB/T2423.52—2003/1K:60958-2-77,1999 Pre-establishment
2 Specification Notes Referenced Documents
Terms and Definitions
Tension Circuit
1.1 Structural Evaluation
4.2 Test Requirements
: Test
3.1 Test Equipment
Pretreatment
5 Initial Preparation
Test Steps
3.4.! 1. Test method 2: Impact test 3: Final inspection 4: Related information about the current risk H: Documentation time: Text: Figure 1. Structural strength test diagram (product ceramic capacitor) 3. Structural strength test diagram (product ceramic capacitor) Figure 1. Test equipment quality diagram Figure 5. Impact test equipment Figure 6: Test step by step test application diagram GR/T2423.52-2Q03/1FX:6CC6B-2-//:199S This part is GB, T2473 electrical product environmental test Part 2: Test methods in one part EC006-2-2:9 Environmental test Part 2: Test methods in one part EC006-2-2:9 Environmental test Part 2: Test method 77: Average strength and impact test English version), part 1 is the same as EC500E 8277: .397 All shares and the table before remain consistent, chapter and number are consistent with the heart B.T2>0.2--2 (under the premise that the world has been able to guarantee, -. According to the wording of the description, there are slight changes in the expression of the drug spectrum: for the convenience of use, this part has been modified; bzxZ.net
"This international standard" is changed to "Part \bH small effect point," bamboo is a decimal point, \) delete the foreword in the international cup standard:
This part relies on the time recording table of data standards. This department is issued by the Ministry of Industry and Information Technology:
Water part, the National Electronic Product Environmental Testing Standard Chemical Equipment Safety Technical Committee is under the jurisdiction of the National Electric Three Electronic Product Environmental Testing Standard Chemical Equipment Safety Technical Committee. 1 This part starts from: Ministry of Industry and Information Technology Electronics First Yuan Research Institute Headquarters Guardian: Richuan, Zhang,
1 Specification by and self
GB/T 2423.5220Q3/IEC60068-2-77:1999 Environmental testing for electric and electronic products Part 2: Test methods Test 77: Structural strength and impact This part of GBT2423 gives the following methods and sub-methods. These two methods are applicable to the test of surface mounted devices (SMI>) such as electrical devices, resistors, and other fast oxygen inductors. The stress test method is only for the purpose of testing the machine core stress on the device after the installation period. The machine defects should be minimized. The specific application of which test method should be specified in the specifications of the relevant components. 2 Normative references The following documents are the most commonly used in this part of the referenced documents of GB 2423. All the references are valid after the date of the use of the components: 1. The existing version is not available for repair. However, the parties to the purchase agreement of this part may also use the latest versions of some documents. For any documents that are not in accordance with the period of the introduction, the new version is suitable for the wood office.
FC6 creation 1SS9 printing design, production and assembly terms and principles 3 Terms and definitions
For the general purpose of this part of GH/T242S, the terms and definitions given in IECt0151 are adopted: 4 Test methods
4.1 Structural strength test
The test is used to evaluate the influence of external static forces on the surface mounting device installed on the printed circuit board on the surface mounting structure: The test does not lead to the overall weakness of the mounted device, but rather the strength of the surface of the welded joint. The test is carried out according to the GI 2423, 29 This test is to evaluate the effect of dynamic force on the device by adding dynamic force to the surface mounted components of the machine when the speed is low. This test simulates the mechanical stress on the surface mounted components during installation or installation of the components. The relevant specifications have been revised.
4.2 Impact test
The test is used to evaluate the ability of the device to control the machine: the dynamic force produced by the high-speed assembly of the device and the moving machine is not tested. The dynamic force method is different for the impact on the device. The relevant detailed specifications should be quoted. 5 Test
5.1 Test equipment
! The test equipment has no requirements. The force applied to the product must be maintained at 1° and the duration specified in the test regulations must be maintained. The length of the top of the test pressure head must be greater than the width W of the product to be tested. Unless otherwise specified in the relevant industry specifications, the shape of the head should be GB/T2423.52-2003/[EC.60068-2-77T9931., m angle: non-determined, see. If the shape and structure of the test sample do not meet the technical requirements, use the head shape specified in the relevant specifications as specified in the test equipment. The device should be able to add a certain potential energy to the sample. The schematic diagram of the device is shown in Figure 4. The energy can be determined by the following formula: E, - mknlu--
Product—potential energy, unit is joule):
The full load is in grams
8——Year force acceleration unit is centimeters per square force/) The device should be able to reverse the load! Fire-friendly brick code: For the selected product pool, the design specifications should be as shown in Figure: The industry light type and code should not change the obvious resistance. The equipment base should be at least 1 series of metal, its production capacity should be much larger than the product, and there should be no non-materials under the base structure that may reduce the impact quality, such as synthetic bite layers. The equipment should be placed on a flat concrete floor or a station with concrete floor, with special light fixtures for the product, and its structure and size should be listed in the relevant specifications of the company. 5.2 Quality treatment
Whether the sample bottom of the room neck is treated. 5.3 Initial inspection
If the product is inspected under light or full light, the product should be tested with a full range of 100x mirrors. If the relevant performance specifications are met, it should also be tested with light eyes, and the performance of the material (or) should be excellent. 5.4 Test frequency
5.4.1 Test method 1: Structural strength test
or inspection shall be carried out as required in the following sections
Unless the relevant specifications have not specified, the sample shall be supported as shown in Figure 2 and Figure 4, and one branch shall be left at both ends of the product. The test platform shall be placed on a flat surface that is fastened to the ground. In this way, the door load will not be affected by the test results. The shadow of the surface should be greater than 3 but less than Figure 21.
) The overall shape of the seat shall be based on the relevant thermal insulation specifications, as shown in the figure? As shown in Figure 2) As shown in Figure 3, the head bar of the product is as shown in Figure 2. The holding time of the pressure is U1: unless otherwise specified in the relevant heat specification, the sample should be tested for electrical performance during the negative action period. E.4.2 Test method 2. Continuous impact test
The test should be carried out according to the following steps:
! The sample is installed on the pipe shown in Table 5. The three-way () drop height is changed to a single-piece table. The long axis time (such as type) is small. If the sample is in a shape or full structure (S derivative is difficult to load in one axial direction.Japanese and Thai test related specifications
) The test specifications (husband sleeve, bearing shaft and when adding the weight of the broken state) should be applied from the specified drop height to the sample. Double-sided specifications, the load-bearing cabinet applied during the period can be applied, the sample with a height of 2.05m~1.0mm and a width of 2.cm1--4.m. The diameter of the single item should be 1mm: 1.mm or 4.mm: the diameter of the top model becomes 4.m11, to test the sound of the product, the new product can be selected to be mechanically suitable for the test product. 5.5 recovery
The detailed product after the test needs to be processed within the range, which should be specified in the relevant specifications. 5.6 After the final inspection, sufficient light should be provided: for example, if the product is exposed to light for more than 20001x, the appearance of the product should be checked for damage, cracking or defects. If the product is tested for intermediate and improved performance, the light should be specified in the relevant specifications.
6 The relevant specifications should give the following information
When the relevant specifications include diamond uniformity and impact test, the clauses in the version are clearly stated. The following must be performed: the selected test method, the structural strength test or the control test or the test or both. The structural strength test, the shape of the pressure head, the material and size of the small sample test equipment and the handling method. The first test, the second load direction and degree, the load bearing capacity, the recovery condition, the final test, and the qualified judgment. We must proceed quickly: 4.a3, 5. 4, 1b) 5. 1. 1e>
GB/T2423.52—2003/IBC:50068-7-77;1999: When the sample length is less than 2m. The normal pressure head is V2. Standard table, HV
Structural strength test example (the sample is a multi-phase ceramic capacitor) 4 2
Figure 3 Structural strength test example (the sample is a cylindrical ceramic capacitor) Single An Tian Shuang meter
Enlarge the garden
GB/T2423.52-2C03/IE:60068-2-77:1999#d
Equipment
Figure 4 Schematic diagram of the test equipment
The center is the spring
The most or the most
Impact test equipment
GI/T 2423.52—2003/IEX 60068-2-77:1999 Electrical equipment for the production of pipes
Impact test application example
Sugar pressure, 500
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Figure 7 Example
Electrical network
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6B:3423.29
(Informative Appendix)
References
GB/T2423.52—2003/1EC e0058-2-77:1999, the well, the aging method
Environmental test according to
tGB/T 242H, 21—199,i IE 0068-3-21:1552) Frequent litigation: Introducing the strength of the installation parts of the gift station
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