JB/T 9711-2001 General technical requirements for single-stage centrifugal turbine torque converters
Some standard content:
IC823.100
Machinery Industry Standard of the People's Republic of China
JBT 9711—2001
Single-stage centripetal turbine torgue converterGeneralspecifications
Published on April 3, 2001
China Machinery Industry Federation
Implementation on October 1, 2001
JB/T971I-2001
This standard is a revision of JB/T9711—1999 (original July 19016—89) single-stage centripetal turbine torque converter general technical signature 3. Compared with JB/9711-1999, the main technical contents of this standard have been changed as follows: the original Appendix A "Test method for cleanliness of hydraulic components" has been cancelled, and the cleanliness spot test method and index of hydraulic torque converter for engineering machinery has been quoted in JB/9711-1999; the original Appendix C "Allowable center corresponding to various balance levels G" has been cancelled, and the determination of allowable unbalance of rotor balance products has been quoted in GB923-1999; Appendix B "Mechanical inspection of key parts of main parts of hydraulic torque converter" and Appendix D "Sampling and approval rules and judgment rules of hydraulic torque converter" have been cancelled, and the relevant contents have been put into the main text. This standard will replace B/T9711-1999 from the date of implementation. This standard was proposed and approved by the Technical Committee for Standardization of Engineering Machinery Industry. The drafting unit of this standard: Tianjin Engineering Machinery Research Institute, the main drafters of this standard are Yu Yongwei, Fei Bin, and Zhang Weimin. 1 Scope
Machinery Industry Standard of the People's Republic of China
Single-stage centripntal 1urbioe torque canverterGaneralspecificatians
JB/T 9711—2001
Replaces JB97[1—1999
This standard specifies the technical requirements, test methods, inspection regulations and markings, packaging, transportation and storage of single-stage centripetal 1urbioe torque converters.
This standard is applicable to single-stage centripetal 1urbioe torque converters (hereinafter referred to as torque converters) for engineering machinery, hoisting and transportation, forestry materials and mining oil machinery.
2 Referenced Standards
The following standards contain provisions that will become substandard provisions through the use of the reference numbers in this standard. When the standard is published, all versions are valid. All standards are subject to revision. The party using the standard should explore the possibility of using the latest version of the following standards. GB/T 2'5—1993
GB/T1348—[988
GE/T7680—1987
G/T9239—1988
GB/T9439—1988
G10019
GDT10429--1989
GO/T 133061991
GB/T 13384—1992
JB/T 97[2—2001
JB.T10223—2001
3 Technical requirements
Fitment of rolling bearings with shaft and housing
Ductile iron
Performance test method of torque converter
Rigid rotor balancing quality allowable balance technology Grey castings
Gear accuracy
Single-stage radial full-wheel hydraulic converter type and basic parameter label
General technical conditions for packaging of electromechanical products
Technical conditions for impeller casting of hydraulic torque converter
Mechanical torque converter shall comply with the provisions of this standard and be in accordance with the product drawings and technical documents approved through the review procedure: 3.1 Technical characteristics and performance indicators
3.1.1 The type and basic parameters of the torque converter shall comply with the provisions of GB/10429. 3.1.2 The difference between the performance index of mass-produced inverter and the performance index of the set product shall comply with the provisions of Table 1: China Machine Tool Industry Association 2001-04-03 approved 2001-10-01 implementation
Pump wheel speed
Connected to the power machine
Fixed transfer
JB/T9711-2001
Elephant wheel power source
Efficiency 9
Higher than the appraisal value
Note: , is the first phase high efficiency condition: , is the "most commercial" phase Efficiency condition; the first is the second phase of the most efficient T condition: 3.2 Reliability
The average time between failures (MTBF) of the torque converter should not be less than 300h, 3.3 Oil leakage
3.3.1 The torque converter operates normally, and all joints and seals are not allowed to have external leakage. 3.3,2 When the torque converter is at a certain speed, the internal leakage through the rotating seal ring should not be greater than 2.0L/min. The total internal leakage is determined by the design department according to different structural conditions. 3. Appearance
3.4.1 The paint film should be smooth and flat, without any defects such as rust, grass pool, crack, wrinkle, missing paint and shaving. 3.4.2 The joint surface of parts and components shall not have any unevenness. 3.5 Cleanliness
The cleanliness of the torque converter shall comply with the provisions of JB/T10223. 3.6 Casting
3.6.1 The casting of the alloy wheel of the torque converter shall comply with the provisions of BT9712. 3.6.2 The gray cast iron parts of the torque converter shall comply with the provisions of GB43. 3.6.3 The ductile iron parts of the torque converter shall comply with the provisions of 0B/T1 348. 3. Machined parts
The dimensional tolerances of the main parts of the torque converter shall not be lower than those specified in Table 2. Table 2
Parts
Rotating parts such as impellers
Fixed parts such as optical bodies
One-way clutches
Parts matched with limit bearings
Positioning outer upper mouth
Positioning inner positive
Center positioning hole
Positioning outer stop
Positioning inner allowance
Inner and outer flange specifications
Double GB: 27S
Tolerance grade
T7, ITS
9711—200
3.7.2 The surface roughness requirements of the main parts of the shortening parts shall not be lower than those specified in Table 3.bZxz.net
Niu and Qi Kan
Stop positioning
The outer surface of the steel or material sealing ring that matches the alloy steel or material sealing ring that matches the inner and outer raceways of the one-way gear
The outer cylindrical surface that matches the gear carrier oil lifting mouth
The outer cylindrical surface that matches the movable pump bearing The test grade of the parts to be matched is 1T6, [I7
, and the tolerance is not added. 3.7.3 The gear precision of the torque converter shall not be lower than the 8-7-7 level specified in GB/110095. The surface R shall be in accordance with GB/T273. 3.7.4, and the ends of the parts in contact with the frame oil seal, axial close-fitting heart-shaped sealing ring, alloy chain iron and plastic sealing ring shall have a surface angle of 15-30° with the axis, and a surface angle of 0.8-3.2um. 3.8 Static balance
The main rotating parts such as the gear and the lance of the torque converter shall be subjected to static balance test. The unbalanced disc is expressed by the weight-diameter product Gr (g·c). The parts to be balanced shall not have inclusions such as sticky sand, chips, roughness and oxide scale. 3.8.1
3.8.2 The static semi-balance quality of the wheel made of aluminum alloy shall be lower than G16 grade specified in GB/T9239. 3.8.3 The static semi-balance quality of cast or cast parts shall not be lower than 6.3 grade specified in GB/T9239. 3.4 The unbalance of the parts shall be adjusted by reducing the mass (or the amount of the parts), but the total amount of adjustment shall not exceed 1% of the mass of the parts. 3.5 For parts connected together for static balance test, the relative positions of the parts after static balance shall be fixed or marked with permanent marks. 3.9 Assembly
3.9.1 The parts to be assembled shall have the qualified mark of the quality inspection department, and the purchased and outsourced parts shall have documents proving their qualification. 3.9.2 All parts should be cleaned and cleaned before assembly. The mating surface and the entire surface should not have rust, bumps, scratches, and paint layers that affect the quality of assembly. 3.9.3
Assembly should be carried out after the paint layer is dry.
The anti-loosening device of the fastener should be firm and reliable. 3.5.52
Use working oil, and do not apply grease. 3.9.6
When installing, the following oil should be applied to the surfaces that are in contact with the frame seal and the 0-shaped continuous contact. 3.9.7
3.9.3 After assembly, the input and output ends should be able to rotate freely, and there should be no contact or deadlock between the rotating parts. 3.9.9 After mixing, the surface of the exposed mechanical element should be coated with anti-rust oil. 4 Test methods
4.1 Performance test
The performance test of the torque converter includes the performance test and the constant speed working condition performance test, which are in accordance with the provisions of the test standard GB7. 4.2 Fatigue test
JB/T9711-2001
The fatigue test specification of the torque converter is formulated according to the load spectrum of the main lever used by the torque converter [procedural fatigue test, random process test, and recurrence test], and the fatigue test of the torque converter is conducted accordingly. In the absence of other test conditions, it can be carried out with the industrial test of the earthwork: 4.3 Idle running test
4.3.1 The test adopts the oil supply system of Du Ke, the working medium is No. 6 filter transmission oil, the shrinkage ring oil flow of the torque converter is the calibrated flow of the oil provided by the whole machine, and the inlet pressure is the calibrated oil pressure ★.05MPa. 4.3.2 The input speed is the rated speed, and the no-load operation is more than 10min. 4.3.3 Inspection items: a) Sensory inspection of the smooth operation of the converter, whether there is any abnormal sound such as catching or bumping; b) Check for any external leakage: c) Use a measuring cup and a stopwatch to measure the internal leakage. 4.4 Functional test: The kinetic energy test of the torque converter is carried out at an oil temperature of 80-100°C. 4.4.1: Overflow valve (safety valve) functional test: The torque converter does not operate for 10 seconds, the pump flow rate is ±5% of the calibrated flow rate, and the system oil pressure is adjusted so that the filter valve discharges the minimum stable flow rate (5L/min±1L/min) at the wash plate. , the opening pressure of the measured flow rate should be / calibrated pressure ± 0.03MPa4.4.2 Test of back pressure valve
The torque converter is not running (1.=0), the flow through the back pressure valve is the calibrated flow and ± 3%, the oil pressure before adjustment should be the standard oil pressure, 0.05MPa, 4.4.3 Test under pressure
The torque converter is not running (m-0), the oil system flow is the calibrated flow ± 5%, the pressure before adjustment should be the calibrated oil pressure ± 0.05MP: Note: The calibrated flow refers to the corresponding oil pump capacity when the power machine is running at no-load speed. 4.5 Disassembly inspection
After the torque converter has completed the tests of 4.1-4.4, disassemble all the converters and check for any abnormalities. The dimensions of the key parts of the necessary converters should be inspected and records should be kept for archiving. 4.6 Viscosity inspection
Please check the viscosity of the product in accordance with the regulations of JB/T10223. 5 Inspection rules:
5.1 Type inspection
If one of the following conditions occurs, a type inspection shall be conducted: a) Trial and finalization of new products or old products transferred to the factory for production: b) After formal production, when there are major changes in structure, materials, and processes that may affect product performance; c) During formal production, a periodic inspection shall be conducted after a certain period of production: d) After a long period of suspension of production, the resumption of production is required by the national quality supervision agency. Inspection items:
) Performance test;
b) Visibility test;
) Valve function test
d) Idle operation test:
e) Disassembly inspection;
] Cleanliness inspection,
5.2 Factory inspection
Products produced in batches shall be subject to factory inspection. Inspection items:
, ...
5.3 Sampling and grouping rules, judgment rules
5.3. Classification of nonconformities
.IB/T9711—2001
Any inspected item that does not meet the requirements of this standard is called nonconformity. According to the degree of impact on product quality, it is divided into Class A nonconformity, Class B nonconformity and Class C nonconformity. The classification of nonconformities is shown in Table 4. Table 4
Classification of nonconformities
Class A nonconformity
Class B nonconformity
Class C nonconformity
Contents
The production, storage and assembly of spare parts and accessories will affect the normal operation of the product or cause losses
The product reliability index is set at two levels
What framework allows inspection And the main performance indicators of the product, such as Kr, M, Kr, M, etc., are not up to the test requirements. The cleaning performance is not up to standard. The internal leakage does not meet the requirements. The parts content is not up to standard. The wheel repellency test and the static balance test are not in line with the standards. The mechanical properties of the alloy do not meet the requirements. The impeller effective diameter and impeller pitch do not meet the requirements. The surface is missing and the quality does not meet the requirements. The paint quality is not good and the uncoated parts and spare parts are rusted. The sealing and packaging box do not meet the requirements. The product labels are not equal. The random parts are not complete. The inspection or factory inspection does not meet the standards. The customer has to make an investment to reflect the product quality. Each performance index is calculated according to the provisions of the unqualified value. 5.3.2 Acceptable quality level (AQ1.) JE/T 9711-2001. According to the unqualified classification, the qualified quality level (AL) is given respectively, see Table 5. Table 5. Unqualified categories 5.3.3 Product sampling 5.3.3.1 Sampling method: Random sampling method is used in the products collected from the user\received warehouse. After sampling, the product should be stored immediately and no adjustment, repair or replacement shall be made.
Sampling plan: This standard stipulates the use of a normal sampling plan, inspection rate: The standard stipulates the use of inspection rate S-2. 5.3. 3.2 Sampling base
Under normal circumstances, the number of sampling batches should be greater than 15 units, such as N-16~25 units, but when using wide sampling, the number of people is not limited. 5.3.3.3 Sample size code
This standard stipulates that the sample size code is A, and the sample size is drawn = 2. In order to ensure the accuracy of the cleanliness inspection, another 2 units are drawn to replace the cleanliness inspection rate, and the total number of units drawn is 4. S.3.4 Evaluation of sample inspection
According to the sampling plan specified in 5.3.3.1, the group is inspected and the results are entered into the summary table 6. When the number of unqualified samples is less than or equal to Ac, it is evaluated as qualified; when it is greater than or equal to α, it is evaluated as unqualified. When all categories are rated as unqualified, the whole product is rated as qualified; when any category or multiple categories are rated as unqualified, the final rating is unqualified. Table 6 Product No. Designation Personnel Class A unqualified Related Plan Class A unqualified Coal produced on a daily basis Inspection 1 toughness Sample method 6 Marking, including collection, transportation and storage 6. 1 Marking JB/T 9711-2001
6.1. The torque converter label shall be fixed on an obvious part of the center and shall comply with the provisions of GBT13306: G.1.2 The content of the torque converter label shall include:
, model and name:
b) nominal torque:
) maximum speed:
d) manufacturer name,
}) serial number and year, month, and month of manufacture.
6.2 Packaging
6.2.1 The torque converter packaging shall comply with the provisions of GBT1334. 6.2.2 The exposed channels and interfaces of the torque converter assembly shall be covered with reliable measures. Wood, linen, yarn and other items that are easy to fall off shall not be used. 6.2.3 The torque converter should be firmly fixed on the packaging box. Generally, the axis should be vertical. 6.2.4 The anti-rust treatment of the torque converter should be effective for no less than six months when it is packed. 6.2.5 The torque converter equipment and accessories should be well protected and firmly fixed in the product packaging box. If necessary, the accessories and spare parts can be packed together. 6.2.6 Each torque converter is accompanied by the following technical documents when it leaves the factory: 4) Product instruction manual (provided separately from the product during batch supply) b) Product certificate: c) List of accessories and spare parts: d) Packing list, 6.7 The torque converter packaging box should be clearly marked on the outside, including: a) Model and name; b) Serial number! Year, month;
Heart) Anti-labor validity period;
dManufacturer name:
) Weight and gross weight;
[)Collection unit:
)Shipping and arrival station (port) name:
h) Transportation and vehicle protection mark.
6. Transportation and storage
6.3.! The torque converter should be equipped with live pressure and anti-rollover measures during transportation and storage. 6.3.2 The torque converter should be transported by car, train or ship after loading, and the loading pieces should be tied with ropes to avoid dust and impact during transportation.
6.3.3 The torque converter should be stored in a dry place away from wind.
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