Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard replaces JB/T 7158-1993 Construction machinery - Detection methods for cleanliness of parts.
The following main changes have been made with respect to JB/T 7158-1993:
——The English name of the standard has been added on the front cover;
——The "Foreword" has been added;
——Some editorial changes have been made to the text of the standard.
Annexes A and B to this standard are informative.
This standard was proposed by China Machinery Industry Federation.
This standard is under the jurisdiction of SAC/TC 334 National Technical Committee on Earth-moving Machine of Standardization Administration of China.
The previous edition of this standard is as follows:
——JB/T 7158-1993.
Construction machinery - Detection methods for cleanliness of parts
1 Scope
This standard specifies a method of detecting the cleanliness of construction machinery parts by weighting method, including detection objects, preparations, impurity collection, impurity detection, impurity analysis and test report.
This standard is applicable to the detection of cleanliness of construction machinery parts.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB 1922-2006 Petroleum solvents for paints and cleaning (ASTM D 3735:1996 (2001), etc., NEQ)
GB/T 6003.1 Test sieves of metal wire cloth (GB/T 6003.1-1997, eqv ISO 3310-1:1990)
QC/T 571 Work guideline for cleanliness of automobile - Nouns and terms
QC/T 573 Work guideline for cleanliness of automobile - Operators, facilities and environment
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in QC/T 571 apply.
4 Detection objects
Detection shall be conducted at the lubrication positions of specific parts before final assembly.
Specific parts to be detected include torque converter, transfer case, transmission, drive axle and rear axle housing in transmission system, as well as supporting wheel, guide wheel and sprocket wheel in traveling system.
Positions to be detected include all surfaces in contact with the working medium.
5 Preparations
5.1 Environment and operators
5.1.1 The cleanliness of parts shall be detected in a clean and well-ventilated room with proper safety measures.
5.1.2 Operators shall wear clean work clothes, hats and shoes, and wash their hands.
5.2 Instruments and cleaners
5.2.1 Instruments and cleaners used for detecting cleanliness shall be clean. Their requirements and uses shall be as specified in Table 1.
5.2.2 The cleaning and standing weight treatment of filter membrane, filter screen and various instruments, filtration of cleaners, and other operations shall be carried out according to the methods specified by QC/T 573.
Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Detection objects 5 Preparations 5.1 Environment and operators 5.2 Instruments and cleaners 6 Test methods 7 Impurity detection 7.1 Filtration (whole solution through filtering and sample filtering) 7.2 Drying and weighing 7.3 Calculation 8 Impurity analysis 9 Test report Annex A (Informative) Sample filtering method A.1 General requirements A.2 Coarse filtering A.3 Stirring A.4 Sampling A.5 Filtering Annex B (Informative) Cleanliness detection and analysis report Table 1 Requirements and uses of instruments and cleaners for detecting cleanliness Table B.1 Cleanliness detection and analysis report
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard replaces JB/T 7158-1993 Construction machinery - Detection methods for cleanliness of parts.
The following main changes have been made with respect to JB/T 7158-1993:
——The English name of the standard has been added on the front cover;
——The "Foreword" has been added;
——Some editorial changes have been made to the text of the standard.
Annexes A and B to this standard are informative.
This standard was proposed by China Machinery Industry Federation.
This standard is under the jurisdiction of SAC/TC 334 National Technical Committee on Earth-moving Machine of Standardization Administration of China.
The previous edition of this standard is as follows:
——JB/T 7158-1993.
Construction machinery - Detection methods for cleanliness of parts
1 Scope
This standard specifies a method of detecting the cleanliness of construction machinery parts by weighting method, including detection objects, preparations, impurity collection, impurity detection, impurity analysis and test report.
This standard is applicable to the detection of cleanliness of construction machinery parts.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB 1922-2006 Petroleum solvents for paints and cleaning (ASTM D 3735:1996 (2001), etc., NEQ)
GB/T 6003.1 Test sieves of metal wire cloth (GB/T 6003.1-1997, eqv ISO 3310-1:1990)
QC/T 571 Work guideline for cleanliness of automobile - Nouns and terms
QC/T 573 Work guideline for cleanliness of automobile - Operators, facilities and environment
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in QC/T 571 apply.
4 Detection objects
Detection shall be conducted at the lubrication positions of specific parts before final assembly.
Specific parts to be detected include torque converter, transfer case, transmission, drive axle and rear axle housing in transmission system, as well as supporting wheel, guide wheel and sprocket wheel in traveling system.
Positions to be detected include all surfaces in contact with the working medium.
5 Preparations
5.1 Environment and operators
5.1.1 The cleanliness of parts shall be detected in a clean and well-ventilated room with proper safety measures.
5.1.2 Operators shall wear clean work clothes, hats and shoes, and wash their hands.
5.2 Instruments and cleaners
5.2.1 Instruments and cleaners used for detecting cleanliness shall be clean. Their requirements and uses shall be as specified in Table 1.
5.2.2 The cleaning and standing weight treatment of filter membrane, filter screen and various instruments, filtration of cleaners, and other operations shall be carried out according to the methods specified by QC/T 573.
Contents of JB/T 7158-2010
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Detection objects
5 Preparations
5.1 Environment and operators
5.2 Instruments and cleaners
6 Test methods
7 Impurity detection
7.1 Filtration (whole solution through filtering and sample filtering)
7.2 Drying and weighing
7.3 Calculation
8 Impurity analysis
9 Test report
Annex A (Informative) Sample filtering method
A.1 General requirements
A.2 Coarse filtering
A.3 Stirring
A.4 Sampling
A.5 Filtering
Annex B (Informative) Cleanliness detection and analysis report
Table 1 Requirements and uses of instruments and cleaners for detecting cleanliness
Table B.1 Cleanliness detection and analysis report
