This standard specifies the life test method for X-ray tubes. This standard applies to X-ray tubes for medical, testing and analysis. SJ/T 10624-1995 X-ray tube life test method SJ/T10624-1995 Standard download decompression password: www.bzxz.net
This standard specifies the life test method for X-ray tubes. This standard applies to X-ray tubes for medical, testing and analysis.

GB 12079 Test method for photoelectric performance of X-ray tubes

Electronic Industry Standard of the People's Republic of China
SJ/T 10624-1995
Methods of life test for X-ray tubes
Mctliods of lifetest for X-ray tubes1995-04-22Promulgated
Implemented on 1995-10-01
Promulgated by the Ministry of Electronics Industry of the People's Republic of China Electronic Industry Standard of the People's Republic of China
Methods of life test for X-ray tubes
Methods of life test for X-ray tubes1 Subject content and scope of application
This standard specifies the methods of life test for X-ray tubes. This standard is applicable to X-ray tubes for medical, detection and analysis. 2 Reference standards GH12079 X-ray photoelectric energy test method 3 Terminology X-ray life life for X-ray tubes SJ/T10624-1995 ST1597-8D The test parameters (for X-ray tubes used for testing, spectral purity, for other X-ray carriers, the time or duration before the X-ray tubes are below the specified values) are specified at the specified distance and power. 4.1 The test piece shall meet the requirements of 312079 for the second year. 42 The power rate of the test piece shall be less than the continuous power or the specified power. 5 Test method 5.1 Method 1 5.1.1 X-ray section 2 is divided into two parts: the X-ray tube is used to calculate the working time. The detailed specification is as follows: 5.1.2 The number of samples for the test is 2-5 (specified in the detailed specification) 5.1.3 Test sequence, according to the detailed specification The life of the X-ray tube is determined by the following parameters: b. According to the detailed regulations, the negative soft conditions of the regulations are carried out: (, in the visual test point specified in the specification, the number of evaluation symbols: but 0, (1-.10.! and! must be measured at the same time
5.1.4 The life test is determined by the average life method. When the average life is not less than 190%, the life test is qualified. The average life rate A is calculated by formula (1):
Ministry of Electronics Industry of the People's Republic of China approved on April 22, 1995-: 0.01 implementation
where: \ 一 test tube number domain:
SJ/T10624-1995
t 一 detailed group station specified in the second life teaching, ratio; 一 the first test symbol of the work effect, h. Single X-ray incense life test time 1. should be determined according to the following provisions: a. life test hit time, the assessment dream number still meets the detailed specification provisions, b. life test reverse to 1 hour. If the nuclear parameters no longer meet the detailed specification provisions, then; then; continue formula (2) calculation: y tw + te
In the formula, x is the measurement time when it is found that the life assessment parameters are no longer in compliance with the provisions of the detailed specifications, h:x-1 is the previous measurement time when it is found that the life assessment parameters are no longer in compliance with the provisions of the detailed specifications, min. ()
c. During the retrograde life test, if the X-ray tube is found to have failed in the test equipment (such as gas, explosion, etc.), it is taken as the time from the start of the test to the discovery of the failure. 5.2
5.2.1 The X-ray operating life N is expressed by the number of single load times on the X-ray timeline, N is specified in the detailed specifications, 5.2.2 The number of sample elements to be deduced for each life test is 2-5 (specified in the detailed specifications). 5.2.3 The single load power must be no less than the specified 90% of the power under the load time. It can be trapped in the Anniu, each load time and the interval between two adjacent heavy loads are determined by the detailed specifications, 5.2.4 Test process
, according to the detailed specifications to the early X-ray continuous egg life assessment: b, the loss of the load to make the corresponding extremely busy heat reach the specified value of the detailed specifications: according to the detailed specifications, the single load and the time required to pass the heavy load: d. The detailed specifications are determined in the pilot test without life change. N0.N times. The product must be measured
5.2.5 The life is determined by the average life rate A is not less than 90%, life test: The average life rate A is calculated by (3:
X, .............
In the formula: 1. The number of loading times specified in the specification: 1. The number of times the machine is loaded in the first period. bzxz.net
The single X-ray level life test effect is determined by the following provisions. The life test is carried out for N times, and the test parameters are still in accordance with the detailed current regulations. Formula (4) is used to calculate N:
N+ Nk:
In the formula, N is the number of loading times of the test point when it is found that the life test parameter does not meet the requirements of the detailed specifications: N: -1 is the number of loading times of the previous test point when it is found that the life test parameter does not meet the requirements of the detailed specifications. (4)
During the running life test, if the X-ray tube is found to have obvious failure (such as leakage, explosion, etc.) on the test equipment, the number of loadings performed from the beginning of the test to the discovery of failure is the same as the number of loadings performed from the beginning of the test to the discovery of failure. Additional remarks:
This standard is under the jurisdiction of the Electronic Industry Standardization Research Institute. This standard was drafted by the State Administration for Industry and Commerce. The main drafters of the standard are: Hua Liying, Hu Youcheng, and Chen Xuejiu.
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