This standard specifies the general technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements of rubber testing instruments and equipment (hereinafter referred to as instruments). This standard is applicable to rubber testing instruments, as well as testing instruments for materials and products such as plastics and thermoplastic elastomers. HG/T 2382-1992 General Technical Requirements for Rubber Testing Instruments and Equipment HG/T2382-1992 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2382-92
General Technical Conditions for Rubber Testing Instruments and EquipmentPublished on September 15, 1992
Ministry of Chemical Industry of the People's Republic of China
Implementation on July 1, 1993
Chemical Industry Standard of the People's Republic of China
General Technical Conditions for Rubber Testing Instruments and Equipment1
Subject Content and Scope of Application
HG/T2382-92
This standard specifies the general technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for rubber testing instruments and equipment (hereinafter referred to as instruments). This standard applies to rubber testing instruments, and also to testing instruments for materials and products such as plastics and thermoplastic elastomers. 2 Reference standards
GB2611
General technical requirements for testing machines
GB2828
Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) Technical requirements
Normal working conditions of the instrument
The ambient temperature is within the range of 5~40℃:
Relative humidity is less than 85%;
The power supply voltage change does not exceed ±10% of the rated voltage value, and the frequency change does not exceed 2%; c
d. There is no corrosive medium around.
3.2 General requirements
The basic requirements, appearance quality and electrical performance of the instrument shall comply with the provisions of GB2611. 3.3 Noise
The noise sound pressure level of the non-dynamic instrument is not greater than 70dB when working. 3.4 Reliability
The method for specifying the instrument embeddability index is shown in Appendix A (reference). 3.5 Transport bump performance
The instrument shall be able to withstand transport bumps without damage to the test surface under packaging conditions; after the transport bump test, it can still fully meet the product standard requirements without adjustment.
4 Test method
4.1 Test conditions
The test shall be carried out under the conditions specified in Article 3.1 of this standard. 4.2 General requirements test
The basic requirements, appearance quality and electrical performance tests of the instrument shall be carried out in accordance with the relevant provisions of GB2611. 4.3 Noise test
4.3.1 The instrument shall be installed according to the actual working state and tested under the no-load maximum noise state. The microphone of the sound level meter faces: the instrument is placed horizontally. For instruments where the operator works in a sitting position, the measuring point is 1.25m above the ground and 0.6m from the edge of the instrument; for instruments where the operator works in a standing position, the measuring point is 1.5m above the ground and 1.0m from the edge of the instrument. Measure four points around the instrument. The maximum value measured at each measuring point shall prevail. HG/T2382-92
4.3.2 When measuring the noise of the panel, the ambient background noise shall be measured first. If the difference between the instrument noise and the background noise is less than 3 dB, the test result shall be invalid. If the difference is 3-10 dB, select the line to correct it according to the table below. If the difference is greater than 10 dB, no correction is required. Table
In the table: Li
The maximum noise value measured when the instrument is working; - ambient background noise value;
AL-correction value.
Instrument noise L. Calculate as follows:
L,= L,-AL
4.4 Canability test
Test method see Appendix A (reference)
4.5 Transport bump performance test
The instrument and its accessories are run on a Class III highway at a speed of 30-40km/h for 200km in a truck under packaging conditions, and then tested according to the product standard technical requirements. 5 Inspection rules
5.1 Each instrument must be inspected and qualified by the quality inspection department of the manufacturer and can only leave the factory with a product certificate. For the factory inspection of measuring instruments, the measured data of the main items should be recorded in the random documents. 5.2 Product inspection is divided into factory inspection and type inspection. Factory inspection, except for reliability test and transport bump test, is carried out item by item according to product standards; type inspection, except for reliability test, is carried out according to product standard requirements. Reliability test cannot be used to replace type inspection. 5.3 Type inspection is usually carried out in the following cases: a.
Preliminary identification of new products or old products for transfer to factory production; after formal production, if there are major changes in structure, materials, and processes, which may affect product performance; during normal production, periodic inspection is carried out every two years or after the cumulative production reaches 50 units; when the product is resumed after a long period of suspension;
When the factory inspection results are significantly different from the previous type inspection; when the national quality supervision agency proposes a type inspection requirement. Sampling for type inspection
The sampling procedure for type inspection shall be carried out in accordance with the provisions of GB2828. The qualified quality level AQL of the sample shall comply with the series values ​​specified in GB2828. Sampling plan
Inspection level: General inspection level I:
Sampling plan strictness: normal inspection;
Sampling plan type: one-time sampling plan. 5.5 Judgment rules
5.5.1 If there are unqualified items in the factory inspection products, they can be repaired and re-inspected. If there are still unqualified items, the product is judged to be unqualified.
5.5.2 The samples for type inspection shall be randomly selected from the qualified products stored in the manufacturer. The sample size n and the judgment rules (Ac, Re) shall be determined by the sampling plan and AQL from the GB2828-2
HG/T2382-
sample table. 5.6 Reliability tests are generally carried out in the following situations: when the national product quality rating is evaluated;
b After the new product is put into mass production;
Once every 3 years during normal production,
6 Marking, packaging, transportation and separate storage
Each instrument shall have a product nameplate fixed in a conspicuous position. The main contents of the nameplate should include: 8
Instrument name;
Instrument model:
Instrument factory number:
Instrument factory date;
Product standard number;
Manufacturer name.
For measuring instruments, in addition to the product nameplate, there should also be a manufacturing measuring instrument license mark approved by the metrology management department. 6.1.2
On the outer packaging box of the product, the following contents shall be clearly marked with non-fading paint: product name and model;
factory reduction number and box number;
box size, net weight, gross weight;
packing date;
arrival station (port) and consignee;
departure station (port) and consignor:
"upward", "handle with care", "afraid of moisture" and other storage and transportation signs, 6.2 Packaging
6.2.1 The packaging of the instrument must be suitable for land, water, air transportation and loading and unloading requirements. 6.2.2 Unpainted and rust-prone parts should be packed with oil seals. 6.2.3 The center of gravity of the instrument in the packaging box should be as low and centered as possible, and the instrument must be supported, leveled and clamped in the box. The movable parts of the instrument should be moved to the position where the product has the smallest external dimensions and fixed. 6.2.4
The gap between the instrument and the outer packaging box (or inner packaging box) should be effectively fixed to prevent movement or collision during transportation.
When the instrument is packed in multiple boxes, the box number is expressed as a fraction. The numerator is the box number and the denominator is the total number of boxes. The main box should be box No. 1. 6.2.6 The materials and structure of the packaging box should prevent rain and wind and sand from entering the box. 6.3 Transportation
The instrument must be covered during transportation and must be handled with care during loading and unloading. It must not be exposed to moisture, heavy pressure, collision or inversion. 6.4 Storage
The warehouse where the instrument is stored should be cool and dry, with no keys or corrosive media around it. It is not allowed to be pressed, placed sideways or upside down. Random Documents
7.1 Random documents include:
Packing list;
Product instruction manual;
Product certificate:
Other documents specified in the product standard,
HG/T238292
7.2 Random documents should be packed in plastic bags and placed securely in the packaging box. If the whole set of instruments is packed in several boxes, the random documents should be placed in the main box.
HG/T2382
Appendix A
Guidelines for reliability test of rubber testing instruments and equipment (reference)
A1 This guideline specifies the expression method of reliability life index of rubber testing instruments and equipment, reliability test method, and the basis, test plan, test conditions, fault judgment principle and calculation of actual life index for formulating sampling test plan on this basis. 2 Assuming that the instrument life follows exponential distribution, the timed truncation test method with replacement is used to judge whether the instrument meets the reliability requirements, and based on the actual test results, the one-sided confidence lower limit mL of MTBF is estimated when the confidence level is p.A3 The product standard stipulates that the reliability index adopts the expression method of "when the confidence level is p, the mean time between failures (MTBF) is not less than m hours".
P-confidence level. Usually p is 0.8 or 0.9.
-MTBF rejection level, that is, the lower limit of the MTBF assumption value. A4 The basis for formulating the sampling test plan
Given the manufacturer's risk α, the user's risk β, the MTBF acceptance level m and the MTBF rejection level m, Let the acceptance probability of products with acceptance level m. be equal to 1-α, and let the acceptance probability of products with rejection level m. be equal to β. A5 Test plan
A5.1 Given data
Manufacturers' risk α=0.2 or α=0.3;
Users' risk β=0.2 or β=0.3;
Rejection level (lower limit of MTBF assumption value) m: Acceptance level (upper limit of MTBF assumption value) mg Identification ratio D.=mo/ml||tt| |Note: In the above data, m is the life index specified in the product standard. And mD.m, D. are selected according to the standard test plan. A5.2 Sampling quantity n
From a batch of products that have passed the factory inspection (which may include products that have been shipped to users), at least 3 samples are randomly selected for testing. When conditions permit, 5 samples can be selected for testing. A5.3 Test plan
The timed truncation test plan is selected according to Table A1 based on the given data. Table AI
Characteristics of the plan||tt| |Scheme number
Nominal value
Cut-off time
(Multiples of 0.)
Number of truncation failures
A5.4 Test parameters
HG/T2382-92
Total cumulative test cut-off time T is calculated according to formula A1: b. The test cut-off time 1 of each instrument is calculated according to formula A2: TET/
C. Judgment criteria:
When the cumulative number of failures r>R, it is unqualified;
The cumulative number of failures r1).
HG/T2382—92
A11.2When the confidence level is p, the lower limit estimate m of MTBF is calculated according to formulas A4 and A5: 8When>1
Where: Ct confidence lower limit coefficient, its value is shown in Table A2.Table A2 Confidence lower limit coefficient C.Table
Total number of failures
and confidence P
When r=0
Where: -
-Total cumulative test deadline, h;
-Confidence level:
Total number of failures
and confidence P
xi(2)—X distribution quantile with 2 degrees of freedom and p confidence level, its value is shown in Table A3.Table A3X distribution quantile table
Additional notes:
This standard is proposed by China National Chemical Equipment Corporation. HG/T2382—92
This standard is under the jurisdiction of the Rubber Testing Instruments and Equipment Standardization Technical Committee of the Ministry of Chemical Industry. This standard was drafted by the Changchun Second Testing Machine Factory. The main drafters of this standard are Li Kuilong and Wang Yulin. People's Republic of China
Chemical Industry Standards
General Technical Conditions for Rubber Testing Instruments and Equipment HG/T2382—92
Editor Chemical Industry Standards Editorial Department
(Standardization Research Institute of the Ministry of Chemical Industry)
Postal Code: 100013
Printing Chemical Industry Standardization Research InstitutewwW.bzxz.Net
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Format 880×12301/16 Printing Sheet Word Count 13000 First Printing in July 1993
First Edition in July 1993
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