Some standard content:
ICS25.120.0
Machinery Industry Standard of the People's Republic of China
JB/T9954—1999
Hydraulic System of Forging Machinery
Published on May 14, 1999
National Bureau of Machinery Industry
Cleanliness
Implemented on January 1, 2000
38/9954-1999
This standard is based on ZD162001—86 Cleanliness of Hydraulic System of Forging Machinery and its supplementary provisions. The technical content of this standard is basically consistent with that of ZD162001—86, except that the relevant provisions have been re-edited. The standard will be implemented from January 1, 2000. This standard replaces ZBJ62001—86 from the date of implementation. The appendix A and appendix B of this standard are both standard appendices. This standard is proposed and coordinated by the National Technical Committee for the Promotion of General Press Standards. The drafting unit of this standard is Jinan Forging Machinery Research Institute. This standard was first issued in November 2016. 1 Scope
Machinery Industry Standard of the People's Republic of China
Forging Machinery Filter System, Cleanliness
This standard specifies the expression method, limit value and measurement method of the cleanliness of the hydraulic system of forging machinery. IR/T 9954—1999
Generation Group ZBJ62001—B6
This standard is applicable to the hydraulic transmission system, control system and lubrication system of the hydraulic circuit or circuit of the forging machinery with mineral oil as the medium, and also applies to the hydraulic system of the protective device of the forging machinery. 2 Definitions
This standard adopts the following definitions.
2.1 Pollutants; refers to substances contained in the cleaning fluid that are harmful to the operation, life and reliability of the system. 2.2 Cleanliness (pollution): The quality of pollutants related to the controlled environment. Usually expressed as the concentration of pollutants in a unit volume of oil (particle size greater than 5 μm or greater than 15 μm). 2.3 Particle size: The largest linear size of a particle. 2.4 Particle concentration: The number of particles contained in a unit volume of oil. 2.5 Sample: A representative specimen in a hydraulic system. 2.6 Sampling: The entire process of obtaining a sample.
2.7 Grid area: The area of the grid printed on the filter membrane. 2. Effective surface area: The area of liquid dripping onto the filter membrane during filtration. A circle with a diameter of mm is calculated and is represented by the symbol S. 2.9 Unit value: 16 of the grid area, see Figure 1. 2.10 Unit area: 1.20 of the grid area, see Figure 1. 2.11 Fiber optic can: Length greater than 10μm, aspect ratio greater than 10. 2.12 Calculation coefficient: The ratio of effective area to counting area, represented by the symbol D, the effective area is 40m2. 2.13 Particle size distribution: The particle concentration of each particle size in a group of particles, expressed as the cumulative number of particles per liter of liquid. 2.14 Graticule (micrometer: a micrometer installed in the microscope eyepiece to measure the particle size. The micrometer is marked with unit area counter lines and auxiliary unit area frame lines to facilitate the counting of particles, see Figure 22.15 Standard sample: a sample is prepared with 100mL of standard liquid sample, used to compare the sample to be tested. National Machinery Industry Approved on May 14, 1999, implemented on January 0, 2000
3 Inactivation spot
3.1 Inactivation degree
JB/T9954—1999
3.【.【Use code method to express the particle concentration of pollutants】Temperature estimation surface identification
Daily limit ||tt| |Particle concentration
Specification ml,
1000000
5000000
250000
1300000
640000
320000
160000
JB/T9954-1999
Concentration
Topic/ml
Code Country
Particle density
3.1.2 This standard determines the cleanliness of the hydraulic system in the form of a fraction using two codes. The first group of codes represents the total number of particles with a size greater than 5 μm per liter of oil (placed in the molecular position); the second group of codes represents the number of particles with a size greater than 15 μm per milliliter of oil. The tax amount of the metal part (placed in the denominator), such as: 18/15. 3.2 Overview of the cleanliness of the hydraulic system of forging machinery
3.2.1 The cleanliness of the hydraulic system of the whip press is classified according to the working pressure of the system. 3.2.2 The cleanliness of the ordinary hydraulic non-lubricating system of the forging machine shall comply with the provisions of Table 2 Table 2
System type
Cleanliness
Medium, low pressure system
Medium, pressure separation system
Sectional pressure machinery CNC, proportional control hydraulic positive system Please cleanliness should comply with Table 3 stipulates that Table 3
System type
Cleanliness
Medium, low pressure system
196
Medium and dual pressure system
4 Another expression of the cleanliness of the injection system. The sample specifications and usage details are shown in Appendix (Appendix of the standard). The determination method of solid particle contamination is shown in Appendix B (Appendix of the standard) High and ultra-high pressure system
High and ultra-high pressure system
JB/T9954-1993
Appendix A
【Standard time record】
Another indication of cleanliness of hydraulic system, test preparation and use details 1 Another indication of cleanliness
41.1 In addition to the indication of cleanliness in the form of fractional form, it can also be indicated in Joe-log logarithmic coordinates 1. It can be indicated by particle size distribution graph, see Figure A?. This graph is composed of the number of all particles of 10 5um and the number of all particles larger than 15m, and is used to indicate the cleanliness of the test sample. Example 1815
A2 Test Sample preparation
A2.1 Sampling requirements
A2.1.1 Draw the sample from the middle layer of the tear tank surface of the running hydraulic system (oil tank suction example), the volume shall not be less than 200mL, the container shall hold more than 15% of the sample volume, the sampling container must be frequently disinfected and inspected and passed before use. Performance: The operating system refers to the system that all elements are under small working conditions, and the frequency of calibration shall be not less than D.5, and the floating racks shall be evenly distributed in the room. A1.1.2 Use any dust-generating point empty sampling device to extract the sample through the connected clean hose. A2.1.3 Before sampling, the sampler must be flushed with the oil of the oil being pumped before sampling. The volume is about times the volume of the sampling tube. It is not recommended to use the flushed concentrate as a sample. A2.1.4 Remove the sampler and pay attention to the tight cover to prevent contamination. A2.1.5 The typical sampling method is shown in Figure A2. During the entire sampling process, pay attention to avoid repeated contamination. A2.1.6 Record the data according to the oil sampling report form [Table A1].
Manual
Sampling date
Manufacturer
Sampling location
Oil range
System operation time before sampling
Environmental vorticity
A2.2 Cleanliness of sampling container, measurement and cleaning method: A2.2.1 General requirements for cleanliness of sampling curtain 11/8. Oil tank sampling report
Receipt number
Product model
System lumen
Sample number
Sample A2.2.1 The sample container is cleaned for activity determination; 50% of the clear liquid in the container is poured into the container, the material is quickly removed and the bottle cap is closed, and the filter is stirred in the same way as the oil filter analysis, and then the automatic comparison and counting are performed. The value is multiplied by the ratio of the amount of liquid poured into the container to the total volume of the container to obtain the cleanliness of the container. Method: The requirements for the clean flow rate of the cleaning application are generally 5/2. A1.1.3 The cleaning method of the sample container is generally not uniformly specified, but the following procedures can be referred to in order to formulate appropriate cleaning procedures for the department. And rinse the sample bottle with a detergent to remove residual oil: .1B/T9954-1999
b) Add a small amount of cleaning agent to the hot water to clean:) Filtered isopropanol is washed three times to remove moisture; d) Use 0.45μ and filter the filtered petroleum ether three times: the bottle mouth is facing down, and when there is still a volatile smell, turn the bottle mouth over and put on the slippery film for use. A3 Sample determination
3.1 The instrument for sample determination must be calibrated and qualified before use. A3.2 The test method of the sample shall be carried out according to the instruction manual of the instrument used. A3.3 If there is any dispute over the test result of the sample, the conclusion obtained by the automatic particle counter shall prevail. A4 Usage rules
A4.1 In the sample measurement and analysis, if the number of oil particles is between the numbers of adjacent contamination particles, the cleanliness should be the code corresponding to the higher number of contamination particles.
A4, 2 When a product has several pressure systems sharing one oil cream, the cleanliness index should take the cleanliness index of the higher pressure system as the full contamination index of the product. When the oil chain is used separately, all oil tanks of the product are sampled and measured, and they must meet the standard requirements. BL
JB/T9954-1999
Appendix B
(Standard Record)
The determination method of particle contamination in the state will be stipulated by the state. The distribution level is shown in Table B1. Table B1 Standard sample level particle size distribution
Note: This table is only applicable to the mechanical industry. B2 Preparation of the tested sample
B2.! The apparatus is and reagent
>15-25
>25-50
a) filtration device (see Figure B1), including: (D) filter cup: (2 membrane, pore size 0.8-1.2μ, true diameter 0mml, white with grid for counting method: without grid for comparison; 0 with support pad: bucket: you mold collection; @ vacuum bottle, capacity 500ml.: @ vacuum bottle side mite; fire detector, @ cup cover: b) a pipette, stainless steel, without teeth at the end:) vacuum pump, producing a vacuum of 0.0866MPu; d) microscope slide, thickness 1.2μ cut;
) microscope cover, thickness 0.25μ:
measuring cylinder, 250mL or more with engraved:
bag) rinse state of the side of the washing plastic bottle. Capacity 500mLh> adhesive tape;
Order clean reagent, use two layers of 0.45m micro-membrane-passed petroleum ether or gasoline to eliminate: B2.2 Preparation sequence
JHF 9954-1999
2.1 Use clean petroleum ether or gasoline to eliminate the quality layer. 2.2.2 Stir the collected mixture in the sample bottle evenly. B2.2.3 Use the cleaned filter membrane to put it on the filter device support pad, install the filter device B1.2.4 Pour the stirred mixture into 100mL of the container, dilute it with petroleum ether at a ratio of 1:1, stir it evenly with a spoon, fill it up, and cover it with a cup lid.
B2.2.5 Connect the side nozzle with a hose to the vacuum pump, drag the vacuum, hold the leak cup and filter until there is 30mL left, open the leak cup cover; use a clean plastic bottle filled with clean oil or gasoline to slide along the cup surface, rinse in a spiral shape, cover and vacuum until the oil is. 2.2.6 Stop vacuuming, collect the leak, remove the filter membrane with a camera, and place the dirt surface on the total microscope slide in a small manner, so that the grid lines of the filter stock are parallel to the edge of the slide, then cover the cover and fix it with adhesive tape. The sample is complete, B2.2.7 Mark the sample and wait for measurement, B3 Measurement "Method|| tt||The measurement methods specified in this regulation include microscope counting method, microscope contrast and automatic particle counter counting method. H3.1 Counting method
B3.1.! Principle: Place the sample on the counting microscope, classify it according to the particle size, and count the number of particles. B3.1.2 Measurement equipment: a) A counting microscope; b) A manual counter.
.1.3 Calibration of the microscope: The graticule in the counting microscope must be calibrated and qualified by the relevant department before use, and it must be checked regularly. B3. 1.4 Determination steps B3.1.4.1 Place the sample to be measured on the microscope stage L. 3.1.4.2 Divide the particles into the following size ranges: m particle size 15mm c particle size 25m 25μm < particle size = 50m 83.1.4.3 Material size Estimated number of particles Objective lens multiple Change tool multiple Particle size > 100m JB/T9954—1999 Select the microscope magnification factor, according to the size of the particles to be counted, select the appropriate magnification according to Table B2, Table R2 New magnification factor for each particle size > 5- 13
200 ×
>15~25
>23-50
>50-100
100 ×
H3.1.4.4 Turn on the microscope reader, adjust the focus, and observe the distribution of particles on the surface. If it is very uneven or the particles are scattered and scattered, re-make the slide
B3.1.4. 5 Counting
B3.1.4.5 Counting principles
a) If the particles are larger than the given minimum size, smaller than or equal to the given maximum size, they shall be counted; if the particles are smaller than the minimum size, they shall not be counted (the small size is the particle size division of the large scale operation, and the scale pole in the counting microscope is used to measure it).
b When counting the number of particles on the selected gate area, only the upper and left boundaries are counted, including the upper left corner of the upper side and the lower left corner of the lower side.
B3.1.4.5.2 Counting steps
No need to count||t t||The following are the steps:
) Align the dividing line in the counting microscope with the selected grid line of the filter, then move the sample counter horizontally, press the counter, and count the particles within the selected grid line.
b) Within the selected particle size range, only count the number of particles per unit area. If the number of particles is: >2: then count the number of particles in 20 grids on the filter membrane (see Figure B3); 2-8: then count the number of particles in 10-grids on the filter membrane (see Figures 48-51); then count the number of particles in 10 unit areas on the filter membrane (see Figure B4); >50: count the number of particles in 10 unit areas on the filter membrane (see Figure B4); =0: then count the number of particles in the entire effective area. 14
1日/9954—1999
) Count the number of particles of other reserve particle size bins in turn, Figure B4
d) Read the number of particles of the reserve particle size bin counted (C) into the microscope particle counter table in Table B3:) Count the total number. Multiply the number of particles of each particle size bin measured by the corresponding calculation coefficient K. Then calculate the total number of particles larger than 15 μm and fill in Table B3. Table B3 Microscope particle count table
Sample mark:
Analysis step:
Analysis type:
Model specification:
Each area
Sample measurement result:
Branch period:
Full:
Effective
Number of particles in each area
Number of areas
Tester:
Total area
Number of particles in the test
Effect of particle counting
Per liter
Maximum3. Place the cleaned filter membrane on the support pad of the filter device with a lens, and install the filter device. B1.2.4 Pour 100mL of the stirred mixed liquid into a container, dilute it with petroleum ether at a ratio of 1:1, stir it with a spoon, fill it up, and cover it with a lid.
B2.2.5 Connect the nozzle with a hose to the vacuum pump, drag the vacuum, hold the leaking cup to filter out 30mL, open the leaking cup cover; use a clean plastic bottle filled with clean oil or gasoline to slide along the surface of the slipping cup, rinse it in a spiral shape, cover it with a lid, and vacuumize until the oil is gone. 2.2.6 Stop vacuuming, collect the leaking cup, remove the filter membrane with a lens, and place the dirt surface on the total microscope slide in a small way, so that the grid lines of the filter stock are parallel to the edge of the slide, then cover it with a cover, fix it with adhesive tape, and the sample is complete. B2.2.7 Mark the sample and wait for measurement. B3 Measurement "Method|| tt||The measurement methods specified in this regulation include microscope counting method, microscope contrast and automatic particle counter counting method. H3.1 Counting method
B3.1.! Principle: Place the sample on the counting microscope, classify it according to the particle size, and count the number of particles. B3.1.2 Measurement equipment: a) A counting microscope; b) A manual counter.
.1.3 Calibration of the microscope: The graticule in the counting microscope must be calibrated and qualified by the relevant department before use, and it must be checked regularly. B3. 1.4 Determination steps B3.1.4.1 Place the sample to be measured on the microscope stage L. 3.1.4.2 Divide the particles into the following size ranges: m particle size 15mm c particle size 25m 25μm < particle size = 50m 83.1.4.3 Material size Estimated number of particles Objective lens multiple Change tool multiple Particle size > 100m JB/T9954—1999 Select the microscope magnification factor, according to the size of the particles to be counted, select the appropriate magnification according to Table B2, Table R2 New magnification factor for each particle size > 5- 13
200 ×
>15~25
>23-50
>50-100
100 ×
H3.1.4.4 Turn on the microscope reader, adjust the focus, and observe the distribution of particles on the surface. If it is very uneven or the particles are scattered and scattered, re-make the slide
B3.1.4. 5 Counting
B3.1.4.5 Counting principles
a) If the particles are larger than the given minimum size, smaller than or equal to the given maximum size, they shall be counted; if the particles are smaller than the minimum size, they shall not be counted (the small size is the particle size division of the large scale operation, and the scale pole in the counting microscope is used to measure it).
b When counting the number of particles on the selected gate area, only the upper and left boundaries are counted, including the upper left corner of the upper side and the lower left corner of the lower side.
B3.1.4.5.2 Counting steps
No need to count||t t||The following are the steps:
) Align the dividing line in the counting microscope with the selected grid line of the filter, then move the sample counter horizontally, press the counter, and count the particles within the selected grid line.
b) Within the selected particle size range, only count the number of particles per unit area. If the number of particles is: >2: then count the number of particles in 20 grids on the filter membrane (see Figure B3); 2-8: then count the number of particles in 10-grids on the filter membrane (see Figures 48-51); then count the number of particles in 10 unit areas on the filter membrane (see Figure B4); >50: count the number of particles in 10 unit areas on the filter membrane (see Figure B4); =0: then count the number of particles in the entire effective area. 14
1日/9954—1999
) Count the number of particles of other reserve particle size bins in turn, Figure B4
d) Read the number of particles of the reserve particle size bin counted (C) into the microscope particle counter table in Table B3:) Count the total number. Multiply the number of particles of each particle size bin measured by the corresponding calculation coefficient K. Then calculate the total number of particles larger than 15 μm and fill in Table B3. Table B3 Microscope particle count table
Sample mark:
Analysis step:
Analysis type:
Model specification:
Each area
Sample measurement result:
Branch period:
Full:
Effective
Number of particles in each area
Number of areas
Tester:
Total area
Number of particles in the test
Effect of particle counting
Per liter
Maximum3. Place the cleaned filter membrane on the support pad of the filter device with a lens, and install the filter device. B1.2.4 Pour 100mL of the stirred mixed liquid into a container, dilute it with petroleum ether at a ratio of 1:1, stir it with a spoon, fill it up, and cover it with a lid.
B2.2.5 Connect the nozzle with a hose to the vacuum pump, drag the vacuum, hold the leaking cup to filter out 30mL, open the leaking cup cover; use a clean plastic bottle filled with clean oil or gasoline to slide along the surface of the slipping cup, rinse it in a spiral shape, cover it with a lid, and vacuumize until the oil is gone. 2.2.6 Stop vacuuming, collect the leaking cup, remove the filter membrane with a lens, and place the dirt surface on the total microscope slide in a small way, so that the grid lines of the filter stock are parallel to the edge of the slide, then cover it with a cover, fix it with adhesive tape, and the sample is complete. B2.2.7 Mark the sample and wait for measurement. B3 Measurement "Method|| tt||The measurement methods specified in this regulation include microscope counting method, microscope contrast and automatic particle counter counting method. H3.1 Counting method
B3.1.! Principle: Place the sample on the counting microscope, classify it according to the particle size, and count the number of particles. B3.1.2 Measurement equipment: a) A counting microscope; b) A manual counter.
.1.3 Calibration of the microscope: The graticule in the counting microscope must be calibrated and qualified by the relevant department before use, and it must be checked regularly. B3. 1.4 Determination steps B3.1.4.1 Place the sample to be measured on the microscope stage L. 3.1.4.2 Divide the particles into the following size ranges: m particle size 15mm c particle size 25m 25μm < particle size = 50m 83.1.4.3 Material size Estimated number of particles Objective lens multiple Change tool multiple Particle size > 100m JB/T9954—1999 Select the microscope magnification factor, according to the size of the particles to be counted, select the appropriate magnification according to Table B2, Table R2 New magnification factor for each particle size > 5- 13
200 ×
>15~25
>23-50
>50-100
100 ×
H3.1.4.4 Turn on the microscope reader, adjust the focus, and observe the distribution of particles on the surface. If it is very uneven or the particles are scattered and scattered, re-make the slide
B3.1.4. 5 Counting
B3.1.4.5 Counting principles
a) If the particles are larger than the given minimum size, smaller than or equal to the given maximum size, they shall be counted; if the particles are smaller than the minimum size, they shall not be counted (the small size is the particle size division of the large scale operation, and the scale pole in the counting microscope is used to measure it).
b When counting the number of particles on the selected gate area, only the upper and left boundaries are counted, including the upper left corner of the upper side and the lower left corner of the lower side.
B3.1.4.5.2 Counting steps
No need to count||t t||The following are the steps:
) Align the dividing line in the counting microscope with the selected grid line of the filter, then move the sample counter horizontally, press the counter, and count the particles within the selected grid line.
b) Within the selected particle size range, only count the number of particles per unit area. If the number of particles is: >2: then count the number of particles in 20 grids on the filter membrane (see Figure B3); 2-8: then count the number of particles in 10-grids on the filter membrane (see Figures 48-51); then count the number of particles in 10 unit areas on the filter membrane (see Figure B4); >50: count the number of particles in 10 unit areas on the filter membrane (see Figure B4); =0: then count the number of particles in the entire effective area. 14
1日/9954—1999
) Count the number of particles of other reserve particle size bins in turn, Figure B4
d) Read the number of particles of the reserve particle size bin counted (C) into the microscope particle counter table in Table B3:) Count the total number. Multiply the number of particles of each particle size bin measured by the corresponding calculation coefficient K. Then calculate the total number of particles larger than 15 μm and fill in Table B3. Table B3 Microscope particle count table
Sample mark:
Analysis step:
Analysis type:
Model specification:
Each area
Sample measurement result:
Branch period:
Full:
Effective
Number of particles in each area
Number of areas
Tester:
Total area
Number of particles in the test
Effect of particle counting
Per liter
Maximum2 Counting steps
The following are required:
) Align the dividing line of the counting microscope with the selected grid line of the filter, then move the sample horizontally, press the counter, and count the particles within the selected grid line;
b) In the selected particle size range, only count the number of particles per unit area. If the number of particles is between: 0.2: then count the number of particles in 20 grids on the filter membrane (see Figure B3); 2.8: then count the number of particles in 10 grids on the filter membrane (see Figure B3); See Figure 48-51, then count the number of particles on 10 unit area of the membrane (see Figure B4) > 50, then count the number of particles on 10 unit area of the filter (see Figure B4) = 0, then count the number of particles in the entire effective area. 14
1日/9954—1999
) Count the number of particles in other particle size categories in turn, Figure B4
d) Read the number of particles in the counted reserve particle size (C) into the microscope particle counting table in Table B3:) Count the total number. Multiply the number of particles in each particle size by the corresponding calculation coefficient. Then calculate the total number of particles larger than 15 μm and fill in Table B3. Table B3 Microscope particle count table
Sample mark:
Analysis step:
Analysis type:
Model specification:
Each area
Sample measurement result:
Branch period:bzxZ.net
Full:
Effective
Number of particles in each area
Number of areas
Tester:
Total area
Number of particles in the test
Effect of particle counting
Per liter
Maximum2 Counting steps
The following are required:
) Align the dividing line of the counting microscope with the selected grid line of the filter, then move the sample horizontally, press the counter, and count the particles within the selected grid line;
b) In the selected particle size range, only count the number of particles per unit area. If the number of particles is between: 0.2: then count the number of particles in 20 grids on the filter membrane (see Figure B3); 2.8: then count the number of particles in 10 grids on the filter membrane (see Figure B3); See Figure 48-51, then count the number of particles on 10 unit area of the membrane (see Figure B4) > 50, then count the number of particles on 10 unit area of the filter (see Figure B4) = 0, then count the number of particles in the entire effective area. 14
1日/9954—1999
) Count the number of particles in other particle size categories in turn, Figure B4
d) Read the number of particles in the counted reserve particle size (C) into the microscope particle counting table in Table B3:) Count the total number. Multiply the number of particles in each particle size by the corresponding calculation coefficient. Then calculate the total number of particles larger than 15 μm and fill in Table B3. Table B3 Microscope particle count table
Sample mark:
Analysis step:
Analysis type:
Model specification:
Each area
Sample measurement result:
Branch period:
Full:
Effective
Number of particles in each area
Number of areas
Tester:
Total area
Number of particles in the test
Effect of particle counting
Per liter
Maximum
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