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Talking about how to ensure the quality of measurement work of bearing occupation
Source: China Bearing Network Time: 2014-10-31
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1 Strengthening the handling of instruments and measuring instruments The strengthening of instruments and measuring instruments is the basis for ensuring the quality of measuring operations. First, instruments and measuring instruments must be rigorously tested and calibrated according to the requirements of the quality manual; to ensure the instrument and measurement specifications. The strict operation and accuracy of the appliance during the validity period. Secondly, the time check is performed on some unusable instruments to ensure the outstanding functions in the operation; the normal operation. Strictly eliminate the use of measuring instruments and instruments that exceed the verification period. Furthermore, the marking and calibration of the gauges should be based on the bumps of the accuracy level to select the parts to be inspected; such as the National Metrology Institute, the Occupation Intermediate Metering Station, and the Provincial Metrology Verification.
Others; it is necessary to protect the protection of instruments and measuring instruments; this is very important to ensure the quality of the metering and verification. The protection and protection of instruments and measuring instruments should be carried out regularly; in accordance with the protection procedures in the program documents. The instrument and the measuring gauges are protected and protected by dust removal and rust prevention. The outstanding protection and protection work can not only adhere to the measurement accuracy of the measuring instruments and instruments, but also extend the service life.
2 Ensure that the quality records of the original records and certificates of verification and calibration are a scientific and prudent operation; from the verification and calibration of the original records to the issuance of certificates; each link is not to be taken care of. It is well-founded, intact and accurate. Firmness is the most basic requirement for the original record.
First and foremost; qualified original records should be real, complete and accurate.
The reality is to faithfully reflect the actual situation of local verification and calibration; reflect the data and appearance in the verification and calibration process; use the original records of the actual conditions such as measuring instruments, equipment and environmental conditions. The measurement staff of our demand should be based on scientific work attitude; seriously treat each verification, calibration process and each measurement data; never agree to the appearance of intentional and swindling.
Integrity is to create a well-formed original record form; the test items in the form should be as detailed as possible. The fierce and bad man's side 17. å·ç»°æ„ é¼å‘’ ê W 㪠㪠㪠㪠㪠填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写 填写Correct and clear and easy to identify; the page should be kept neat and tidy. Correction should be standardized; when the record is wrong; every mistake should be changed; not wiped out; avoid handwriting vague or missing; fill in the correct value All changes to the record shall be subject to changes in the signature or abbreviations of the signature;
Accuracy is the center of the measurement operation; there is no accuracy; the verification and calibration work loses its meaning. The establishment of accuracy depends on the high-precision measurement instruments and the normal operation of the instrument; The nature of the method and the measurement staff. For the verification and calibration data in question, it is necessary to use different measurement methods and different measurement instruments to verify; to ensure the accuracy of the calibration and calibration data. ; should be based on the accuracy of the different; adopt the measurement method and measuring instrument that can satisfy the measurement accuracy requirement with the maximum limit.
The verification and calibration certificate is the “product†of the measurement operator's output; it is the concentrated expression of the quality of the measurement operation. The qualified verification and calibration certificate pattern should be standardized; the content should be intact, clear, accurate and objective; it should include the verification and calibration results. All the information. For example, the calibration specification tool used in the verification and calibration, the certificate number of the gauge, the title and type of the equipment, the skill file number, the title, the verification, and the environmental conditions (such as temperature, humidity, etc.) ), verification, review, signature of the supervisor, validity of the certificate, uncertainty of the measurement results, and the status of traceability.
Measurement uncertainty refers to the extent to which measurement results cannot be determined; it is used to indicate the degree of trustworthiness of the measurement results. Because of the limitations of knowing and the lack of talents; any measurement cannot be accurate; there must be errors. Uncertainty It is a new concept based on the theory of error; it is used to indicate the quality of the measuring equipment. The uncertainty is more. The å å³ å³ å å å å å å å å å å å å å å å å å 涫褂 涫褂 涫褂 è‹Therefore, when measuring and using the measurement results; it is necessary to think about the measurement uncertainty. Strictly speaking; do not know the measurement results of uncertainty; can not compare with each other; do not have the use value; it has no meaning.
Verification and calibration certificates should be able to provide a description of the conditions and conformity specifications that are traceable back to the national metrology benchmark. In the absence of traceability to national metrology benchmarks; the laboratory should provide a satisfactory basis for the associated results; for example, participate in an appropriate laboratory Alignment or talent verification.
The uncertainty of the verification and calibration certificate and the traceability indicate the satisfaction of the measurement standards or testing requirements of the lower laboratory; then satisfied with IS0/IE017025 “General requirements for testing and calibration laboratoriesâ€; in quality management and quality assurance In line with the needs of IS09001.
3 Ensure that the environmental conditions of the calibration and calibration operations are satisfactory. The environmental conditions of the requirements verification and calibration operations are necessary to satisfy the measurement requirements; the measurement of the indoor and outdoor environment should not affect the accuracy, reliability and effectiveness of the measurement results. The measurement operations should be equipped accordingly. The equipment monitors and records the environmental conditions; controls the various factors that can affect the accuracy of the test; if necessary, it should be properly and reasonably verified. Usually the ambient temperature is 20±o. About 5 °C; ambient humidity is about 60%. The measurement room must be dust-proof, shock-proof, anti-corrosion, anti-pollution and anti-noise. Environmental conditions that are not satisfactory will bring many unfavorable factors to the verification and calibration operations. The conditions that each requirement does not meet the rules will directly affect the accuracy, reliability and effectiveness of the measured values. The environmental conditions for satisfactory demand are the most basic conditions for the verification and calibration operations; There should be outstanding internal handling; this is not limited to cleaning and tidy; it should also include various safety precautions.
4 Progressive measurement workers' skill nature and ideological essence progress The measurement of the operator's skill transaction essence and ideological essence is to ensure the verification and calibration work. The verification and calibration operations are scientific, legal and policy-oriented. Strong work. The people in the machine, machine, material, law, and ring are the first; the leading equipment and equipment must also have the outstanding nature of the operators to operate; the preparation of various measurement laws and regulations; it is necessary to rely on the measurement staff Strict implementation; talents play a role. This requires that the personnel engaged in measurement operations not only have outstanding skill essence, transaction essence; it is necessary to have a higher ideological essence.
First, the newly-employed measurement workers should follow the rules of the procedure documents; after strict training and check-up; they can be certified to work. The results of the inspection should be recorded. Secondly, the equipment should be satisfied with the scope of work and the amount of work. Measurement workers; these measurement workers need to pass the necessary teaching and training; have skilled knowledge and professional experience. Together with the regular training of measurement workers in various skills, regulations, measurement laws, regulations, etc. Learning; make it constantly update the common sense, improve the skill level of the work together to improve the ideological essence of itself; to adapt and satisfied the new century measurement verification, calibration and measurement processing operations.
The bearing calibration and calibration work is a detailed and messy operation; there are many influencing factors; the touch is wide. As long as the above operations are carefully done; the quality of the measurement operation is ensured; The quality of verification and calibration operations; advancement in the level of bearing production skills.
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