Some standard content:
ICS 25.120.99
Machinery Industry Standard of the People's Republic of China JB/T10351-2002
Super high pressure waterjet cutting machine2002-07-16 Issued
Implementation on 2002-12-01
Issued by the State Economic and Trade Commission of the People's Republic of ChinaForeword
Normative references
3 Types and basic parameters
3.1 Type.．
3.2 Basic parameters
4 Technical conditions．
4.1 Composition of waterjet cutting machine.
4.2 Pressure regulation
4.3 Safety requirements of waterjet cutting machine
Noise of waterjet cutting machine
4.6 Hydraulic system of booster
4.7 Cutting actuator.
CNC cutting platform
4.9 Appearance requirements for water jet cutting machine
5 Test methods.
5.1 Test conditions..
5.2 Test methods.
6 Inspection rules.
6.1 Type inspection.
6.2 Factory inspection
6.3 Sampling inspection.
7 Marking and packaging
7.1 Marking
7.2 Packaging
8 Storage and transportation
Appendix A (Normative Appendix) Self-enhanced pressure.
Industry Center
Industry Products
+++.++++-
Electricity
+-+++-
China
JB/T 10351--2002
BT.10351-2Q92
Appendix A of this standard is a normative appendix.
This standard is proposed by China Machinery Industry Federation. Foreword
This standard is under the jurisdiction of the Standardization Technical Committee of Machinery Industry Spraying Equipment. Drafting units of this standard: Hefei General Machinery Research Institute, Nanjing Dadi Waterjet Co., Ltd. The main drafters of this standard are Xue Shengxiong, Chen Bo, Huang Wangping, Zhao Hongjun, Shi Haixia, and Jiang Zhenhan. 1 Scope
Ultra-high-pressure waterjet
JB/T 10351 ---2002
This standard specifies the basic parameters, technical conditions, test methods, marking, packaging, storage and transportation of ultra-high-pressure waterjet. This standard applies to ultra-high-pressure waterjet (referred to as waterjet, whose main engine is ultra-high-pressure booster or ultra-high-pressure pump) with a rated discharge pressure of 150MPa to 400MPa.
2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions shall apply to this standard. GB/T3 Finish, shoulder distance, undercut and chamfer of common thread GB/T191 Pictorial marking for packaging, storage and transportation
GB/T196 Basic dimensions of common thread (diameter 1~600mm) GB/T197 Tolerances and fits of common thread (diameter 1~355mm) Sampling method for chemical analysis of steel and allowable deviation of chemical composition of finished products GB/T2224
GB/T223.3~78 Chemical analysis methods for steel and alloys Macrostructure and defect acid etching test method for steel GB/T 2264
GB/T 228
Metal tensile testing method
GB/T 229
GB/T 230
GB/T231
GB/T 699
GB/T 700
GB/T1220
GB/T 1979
GB/T 2975
GB/T3077
Metal Charpy notched impact test method
Metal Rockwell hardness test method
Metal Brinell hardness test method
High-quality carbon structural steel
Carbon structural steel
Stainless steel bars
Structural steel macrostructure defect rating chart
Sampling location and specimen preparation for mechanical property test of steel and steel products Alloy structural steel
GB/T 5226.1
GB/T 9439
GB/T 10561
GB/T 13306
GB/T 13819
Industrial machinery and electrical equipment Part 1: General technical conditions Grey iron castings
Microscopic evaluation method of non-metallic inclusions in steel
Copper alloy castingsWww.bzxZ.net
GB/T17421.1~1998 General rules for machine tool inspection Part 1: Geometric accuracy of machine tools under no-load or finishing conditions Ultra-high pressure pumps
JB/T 6909
JB/T8526
Safety specification for high-pressure water jet cleaning
YB/T5148
Method for determination of average grain size of metal
Type and basic parameters
3.1 Type
JB/T10351---2002
Water jet cutting machine is divided into two types: hydraulically driven supercharger and ultra-high pressure pump, and the prime mover is an electric motor or a diesel engine. 3.2 Basic parameters
3.2.1 Pressure
The rated pressure of the pump shall comply with the provisions of Table 1. Individual products that exceed this range may refer to this standard. Table 1
3.2.2 Flow
The maximum flow rate of the water jet cutting machine under the rated pressure, in L/min. 3.2.3 Power
Unit: MPa
The main power of the water jet cutting machine is in the range of 5.5kW to 75kW. Individual products that exceed this range may refer to this standard. 3.2.4 Other parameters
Other parameters of the water jet cutting machine are determined by the manufacturer. 3.2.5 Model
The model of water jet cutting machine is indicated as follows:
X×Xi □□
Feature code
Host type
Power, unit is kw
Pressure, unit is MPa
Enterprise characteristics
Enterprise characteristics: 2 to 3 letters are used to indicate the enterprise characteristics or product brand; Pressure: unit is MPa, the model only reflects the pressure value; Power: Identified as needed; Host type: hydraulically driven supercharger type B, ultra-high pressure pump type B, electric motor drive is not indicated, diesel engine drive is indicated by C; Feature code (such as stepper type, servo type, etc.): Indicated by English capital letters or Arabic numerals (such as type A, type B, type 1, type 2, etc.).
Model example: ×××-250—15-A
Indicates 250MPa, 15kW electric motor driven supercharger type cutting machine (type A machine). 4 Technical conditions
4.1 Composition of water jet cutting machine
The water jet cutting machine consists of ultra-high pressure generating equipment (ultra-high pressure booster or ultra-high pressure pump unit, hereinafter referred to as the main machine), water jet cutting actuator, CNC cutting platform, etc.
The water jet cutting machine shall comply with the requirements of this standard and be manufactured according to the drawings and documents approved by the prescribed procedures. 4.2 Pressure regulation
The water jet cutting machine shall be able to adjust the working pressure conveniently. 4.3 Safety requirements of water jet cutting machine
4.3.1 The water jet cutting machine unit must be equipped with a protective cover when leaving the factory and in use, and the main machine shall have an overload protection device. 4.3.2 The ultra-high pressure hose joint shall have a steel wire flexible buckle to prevent detachment and injury. 4.3.3 The ultra-high pressure hard pipe connection between the main machine and the platform that leaks out shall be fixed with a pipe clamp. 4.3.4 A splash plate shall be installed on the cutting head.
4.3.5 The ultra-high pressure pipe joint connecting the cutting head shall have a protective pipe of appropriate length. 4.3.6 Safety valves, overflow valves, pressure-stabilizing containers and piping must meet their technical requirements. JB/T 10351—2002
4.3.7 The main engine should have a pressure relief device. When the main engine fails or the nozzle is blocked, the machine must be stopped for pressure relief. 4.3.8 Other safety requirements for water jet cutting machines refer to JB/T8526. 4.4 Noise of water jet cutting machines
When the water jet cutting machine is operated under the noise reduction conditions of the rated working water tank, the noise should not exceed 90dB(A), except for diesel engines. 4.5 Main engine
4.5.1 Material requirements for pressure-bearing parts
4.5.1.1 The materials of the pressure-bearing parts of the main engine shall be as specified in the drawings. Materials that can meet the design requirements after testing can be substituted. 4.5.1.2 The mechanical properties of all pressure-bearing parts must meet the requirements of Table 2. When the operating temperature of the main machine is lower than 20°C (pressure test temperature), the impact test is carried out at a lower temperature and must meet the requirements of the average value and minimum value in Table 2 at the same time.
Ultimate strength
700~850
850～1000
1000～1200
800～900
900～1000
1000～1100
Yield limit
Tensile test
Elongation
Reduction of area
Test temperature
Impact test
Charpy impact
Absorbed energy J
Average minimum value
4.5.1.3 The materials of pressure-bearing parts should have certificates of chemical composition and mechanical properties. If there are no certificates, the mechanical properties should be tested in accordance with the provisions of GB/T699, GB/T700, GB/T1220 and GB/T3077. 4.5.1.4 The chemical composition and mechanical properties of pressure-bearing parts shall be tested in accordance with the provisions of GB/T222, GB/T223.3~78, GB/T228, GB/T229, GB/T230 and GB/T231. 4.5.1.5 Material requirements
a) For steel ingots or profiles with a diameter of >80mm that need to be forged or directly machined, low-power microstructure inspection shall be carried out in accordance with GB/T226 and GB/T1979. The center and general porosity shall be ≤1.5 level, segregation shall be ≤1.5 level, there shall be no defects such as white spots, shrinkage cavities, bubbles, honeycombs, etc., the oxide and sulfide level in non-metallic materials shall be ≤2.5 level, and the total weight shall be ≤2.5 level. b) The non-metallic inclusions in the forgings of important pressure-bearing parts shall be evaluated in accordance with the provisions of GB/T10561. c) When the material has been heat treated and the mechanical properties meet the requirements, it can be directly fed, but it shall be specially stated on the material certificate. d) The materials in the warehouse should have a certificate of conformity.
4.5.1.6 Forgings should be free of surface defects. When forging with steel ingots, the loose parts should be cut off. 4.5.1.7 Forgings should not be overburned or severely decarburized. The outer surface should be free of defects such as cracks, folds, forging scratches, spots, slag inclusions, etc. The machined surface can only be used after the above defects are completely removed after processing. Forging defects should not be welded. 4.5.1.8 Forgings should have an appropriate forging ratio. 4.5.1.9 The grain size of forgings after heat treatment should be checked according to the provisions of YB/T5148 and should not be less than Grade 5. 4.5.1.10 If the manufacturer finds that one piece is unqualified, the sample should be doubled and re-heat treated. The number of heat treatments should not exceed two times.
4.5.1.11 The sampling method for mechanical property test shall be implemented in accordance with GB/T2975. 4.5.1.12 Pressure-bearing parts shall not be welded and shall be subjected to non-destructive testing. The testing methods shall comply with the provisions of relevant standards and a test report shall be issued. JB/T 10351-2002
4.5.1.13 High-pressure hard pipes shall be subjected to microstructure testing to ensure that there is no decarburization and abnormal structure. 4.5.1.14 The technical requirements and test methods for castings of water jet cutting machines shall comply with the provisions of GB/T9439, and copper alloy castings shall comply with the provisions of GB/T13819.
4.5.2 Manufacturing technical requirements
4.5.2.1 Parts shall be free of defects that affect strength and appearance damage. The sealing surface shall not have defects such as scratches and depressions. 4.5.2.2
The self-strengthening treatment method generates initial residual stress in the inner layer of the pressure-bearing parts. 4.5.2.3
The pressure of the self-strengthening treatment shall be controlled to a level that does not produce re-yielding after unloading (see Appendix A). a)
Calculation of compressive residual stress after unloading.
4.5.2.4 If there are openings and screw holes on the cylinder body, the design should consider the influence of stress concentration. 4.5.2.5 The plunger and the sealing sleeve should be ground evenly. After the inlet and outlet valve group is ground, a kerosene leakage test should be carried out. The valve and the valve seat are turned upside down and kerosene is injected. There should be no leakage. 4.5.2.6
Parts can only be assembled after passing the inspection. Purchased parts and outsourced parts can only be assembled with a certificate of conformity. 4.5.2.7
4.5.2.8Before assembly, all parts should be cleared of burrs, cleaned and then blown dry with compressed air. The surfaces of non-processed parts that come into contact with lubricating oil should be coated with oil-resistant and rust-proof primer.
4.5.2.9 Important threaded connections should be assembled with a torque wrench. After assembly, turn the wheel to check if there is any jamming. 4.5.2.10
After the test, the following work should be done:4.5.2.11
a) The liquid in the main machine should be cleaned.
b) The suction port and the discharge port should be sealed.
c) The exposed processing surface of the main machine should be treated with anti-rust, and the non-processed surface should be painted with anti-rust primer and topcoat, and the paint layer should be smooth and flat. 4.5.2.12 If the user uses it correctly and abides by the provisions of the product manual, the manufacturer will guarantee the water jet cutting machine for 1 year or 1000 hours of cumulative operation from the date of delivery, whichever comes first (excluding wearing parts). During the warranty period, if the water jet cutting machine cannot work properly due to improper design, manufacturing or material selection, the manufacturer is responsible for free repair or replacement of parts. 4.5.3 Water inlet requirements
4.5.3.1 The water inlet of the main machine should be continuous, without abnormal vibration and interruption. 4.5.3.2 The inlet water shall be equipped with a precision filter device with a filtration accuracy of not less than 5μm, and deionization treatment shall be carried out when necessary. 4.5.4 Overpressure protection
4.5.4.1 The main engine shall be equipped with a pressure detection and display device. The safety valve shall open sensitively, and the opening pressure shall be 1.05 to 1.1 times the maximum working pressure. 4.5.4.2
If equipped with a safety explosion element, the explosion pressure shall be 1.1 to 1.25 times the maximum working pressure. 4.5.4.3
4.5.5 Life of wearing parts
The wearing parts of the ultra-high pressure system shall include the inlet and outlet valve group, the overflow valve group, the reciprocating seal, the water nozzle, and the abrasive nozzle. 4.5.5.1
The cumulative running time of the wearing parts under load shall not be less than the provisions of Table 3. Table 3
Reciprocating seal
Overflow valve group
(Repair allowed)
4.5.6Hydraulic test
Cumulative running time h
<250MPa
≥250MPa
4.5.6.1All pressure-bearing parts of the main engine shall be subjected to hydraulic test. 4
Water nozzle
Abrasive nozzle
Inlet and outlet valve group
(Repair allowed)
Cumulative running time h
4.5.6.2Hydraulic test of the main engine shall be carried out at the design temperature, and the test medium shall be the working medium. 4.5.6.3Hydraulic test pressure pp=(1.1~1.25)pWhere:
pThe maximum working pressure of the main engine.
JB/T 10351-—2002
When the test pressure reaches the specified value, the pressure stabilization time is greater than or equal to 30 minutes, and there should be no leakage during the pressure maintenance period. 4.6 Booster hydraulic system
4.6.1 The hydraulic system should be equipped with a filter, cooler, overflow valve, unloading valve and pressure gauge. 4.6.2 The hydraulic system tank should be equipped with a liquid level display and temperature display device. 4.6.3 When working under the highest pressure, the system static seal has no leakage and other phenomena. 4.7 Cutting actuator
4.7.1 The cutting actuator includes the cutting head, abrasive supply system and pipeline. 4.7.2 The cutting head should be installed firmly.
4.7.3 There should be no backflow during the operation of the cutting head. 4.7.4 The nozzle outflow is a beam jet, and the straight section of the jet is not less than 50mm. 4.7.5 The abrasive control valve should be sensitive to switch.
4.7.6 There shall be no air or water leakage at each joint. 4.7.7 The abrasive supply shall be uniform and free of blockage. The abrasive supply shall be adjustable when necessary. 4.7.8 Ultra-high pressure steel pipe
4.7.8.1 Ultra-high pressure steel pipes shall be seamless steel pipes, and cold bending shall be adopted for bending. The steel pipes shall comply with the relevant provisions of ultra-high pressure steel pipes. The threads at the ends of ultra-high pressure steel pipes shall comply with the relevant provisions of GB/T3, GB/T196 and GB/T197. 4.7.8.2
4.7.8.3 The threads at the ends of ultra-high pressure steel pipes shall avoid biting. 4.7.8.4 Ultra-high pressure steel pipes shall be subjected to hydraulic pressure test at 1.5 times the working pressure. 4.7.9 Ultra-high pressure hoses shall be subjected to hydraulic pressure test at 1.5 times the working pressure, and the bursting pressure shall be 2.5 times the working pressure. 4.8 CNC cutting platform
4.8.1 The cutting platform should have the function of realizing arbitrary operation in the X-Y plane. 4.8.2 The driving motor of the cutting platform is a stepping type or an AC servo type. 4.8.3 The structure of the cutting platform is a gantry type or a cantilever type. 4.8.4 The working size of the cutting platform is determined by the manufacturer. 4.8.5 Cut 5mm thick Q235-A steel plate on the CNC cutting platform, the shape is a circle of Φ100mm or a square of 100mm diagonal. When the CNC platform is debugged and stabilized, measure the diameter of the cut circle or the side length of the square, and the error should not exceed ±0.2mm. 4.8.6 The operating environment temperature of the cutting platform is 0℃40℃. 4.8.7
The cutting platform runs smoothly without shaking or crawling. The platform running speed should be adjustable.
4.8.9 During the operation, the water level of the receiving water tank should remain basically unchanged, and an overflow hole can be set. 4.8.10 The platform screw and guide rail should be equipped with protective covers to prevent dust and abrasives from entering. The geometric accuracy and repeat positioning accuracy of the CNC platform shall comply with the provisions of Table 4 CNC platform accuracy and inspection methods 4.8.11
Requirements for the control system
4.8.12.1 The control system includes platform control, abrasive (water) supply system control, host control, high-pressure pump water inlet control, etc. 4.8.12.2 The control system connection line shall use a protective line to prevent leakage. 4.8.12.3 The electrical part shall comply with the provisions of GB/T5226.1. 4.8.12.4 The computer-aided system control is normal and data transmission with the CNC platform is realized. 4.9 Appearance requirements of water jet cutting machine
4.9.1 The appearance of the water jet cutting machine shall comply with the requirements of the design drawing and shall not have any damage, bumps, etc. 5
JB/T 10351—2002
4.9.2 Various signs and marks of the water jet cutting machine shall be clear, eye-catching and firmly installed. 4.9.3 The unprocessed surface of the water jet cutting machine should be painted with anti-rust paint and exterior paint. The paint layer should be bright, smooth and without color difference. 4.9.4 Various electrical connections and cables should be arranged neatly and fixed with pipe clamps. Folding, twisting, etc. are not allowed. Table 4 Flatness of the platform Straightness of the longitudinal movement of the nozzle in the vertical plane (a) and parallelism in the horizontal plane (b) Straightness of the transverse movement of the nozzle in the vertical plane (a) and parallelism in the horizontal plane (b) The measurement length is the vertical distance between the transverse movement of the nozzle and the longitudinal movement Straightness ruler, measuring block or precision water level ruler, instrument level ruler and angle ruler (refer to the relevant provisions of GB/T17421.1) The long side value of the platform determines the tolerance. Place a precision level ruler on the plane surface, fix the indicator on the bottom plate of the nozzle seat, make its probe touch the plane of the level ruler, adjust the level ruler so that the readings of the indicator at both ends of the level ruler are equal, and inspect the moving slide over the entire stroke, a is in the vertical plane, and b is in the horizontal plane. The errors a and b are calculated separately, and the maximum value of the indicator reading is taken as the error value. Place a precision ruler on the plane surface, fix the indicator on the bottom plate of the nozzle holder, make its probe touch the plane of the ruler, adjust the ruler so that the readings of the indicator at both ends of the ruler are equal, and check the moving slide over the entire stroke, a is in the vertical plane, and b is in the horizontal plane. The errors of a and b are calculated separately, and the maximum value of the indicator reading is taken as the error value. The angle ruler is placed on the platform surface, and the indicator is fixed on the nozzle base. The angle ruler is adjusted: one side of the angle ruler is parallel to the longitudinal movement direction of the platform, and then the indicator is located in the middle position of the longitudinal travel of the platform. The indicator probe is placed on the other measuring surface of the angle ruler, and the probe is moved horizontally to test the entire workbench. The difference between the maximum indicator reading is the error value. 5 Test method 5.1 Test conditions Table 4 (continued) Axial movement of the screw Repeatable positioning accuracy 5.1.1 The water jet cutting machine is regarded as a system, and its test can be carried out independently. 5.1.2 The test medium is 0℃~40℃ clean water. 5.1.3 The test oil is No. 3 hydraulic oil.
5.1.4 The test oil temperature should be maintained in the range of 10℃～65℃. b: 0.05
Instrument steel ball
JB/T10351-2002
Test method (refer to the relevant provisions of GB/T17421.1
)
Fix the indicator so that its probe touches the steel ball in the top hole of the screw, and rotate the
screw for inspection, a: horizontal: b: vertical. a and b are inspected separately, and the error is calculated by the maximum difference of the indicator readings. Fix the indicator so that the probe touches the nozzle seat, and move it longitudinally and transversely for 7 times respectively, so that it leaves the indicator a certain distance and then returns, a: transverse; b: longitudinal. Measure the errors of a and b respectively, calculate them respectively, and record the maximum difference of the indicator readings.
Inspect at three positions in the middle and near the two ends of the platform, and take the largest of the three values as the error value.
5.1.5 The error of measuring instruments and meters shall meet the requirements of Table 5. All measuring instruments and meters shall be within the validity period and have the inspection certificate of the metrology department.
Number of reciprocating times
Input power of the pump
5.1.6 The measurement method shall meet the requirements of JB/T6909. 5.2 Test method
5.2.1 Test run
Relative limit error%
Type and spot check test
5.2.1.1 Test run is mainly to check the manufacturing quality and run the water jet cutting machine, ±0.5
Factory test
When the test run is no-load, it should be carried out without the nozzle installed and the inlet and outlet pipe valves are fully opened and the liquid is transported. The test time is greater than 1h.
When the test run is loaded, the nozzle is installed and the discharge pressure is gradually increased from normal pressure to rated pressure. The load test is carried out for every 50MPa1
JB/T 10351--2002
pressure level.
5.2.1.4 During the test run, the vibration, noise, temperature rise, leakage, lubrication and various protective devices of the main machine should be normal. 5.2.2 Performance test
The performance test includes: main engine performance test, safety test, hydraulic system test, abrasive (water) supply system test, CNC platform test, electrical control system test and cutting performance test. 5.2.2.1 Main engine performance test
Determine the relationship between flow and pressure, start from normal pressure, and then increase the pressure by 50MPa per pressure level, but add a pressure point of 100MPa. For each pressure level not exceeding 400MPa, the pressure, reciprocating times, flow and time, hydraulic system pressure, oil temperature, etc. must be measured and recorded at the same time. 5.2.2.2 Safety test
The safety valve test must be carried out when the cutting machine is running, and the pressure must be gradually increased. The safety valve should be tripped at 1.05 to 1.10 times the maximum pressure, and the test number should be no less than 3 times; the safety explosion element should be subjected to a 10% sampling test at 1.10 to 1.25 times the maximum working pressure. 5.2.2.3 Hydraulic system test
During the test, check that the temperature of the hydraulic oil in the hydraulic system does not exceed 65°C, and the temperature rise does not exceed 40°C. 5.2.2.4 Abrasive (water) supply system test a) Measure the abrasive supply, requiring the abrasive supply to be continuous, uniform, and unblocked; b) When the abrasive valve is closed, the abrasive should not enter the abrasive delivery pipe; when a breakpoint occurs in the water cutting operation, no backflow should occur in the abrasive pipe. c)
CNC platform test
Measure the maximum working range and maximum running speed of the CNC platform, and conduct it separately in the horizontal and vertical directions. The nozzle runs smoothly without jittera
phenomenon.
b) Check the geometric accuracy and repeated positioning accuracy of the CNC platform. The measurement method is shown in Table 5. 5.2.2.6 Electrical control system test
a) Turn the manual switch or input the signal, the overflow valve can start overflowing under different pressures, and the overflow valve is sensitive and reliable. b) Check that the transmission function of the computer control system is normal. 5.2.2.7 Cutting performance test
The cutting performance test is divided into water jet cutting and abrasive cutting performance test. Different sizes of materials should be cut under given working conditions and their cutting speed should be given. During the test, the water jet cutting machine should have sensitive breakpoints, no backflow phenomenon, uniform cutting seams, and platform cutting accuracy test. The test method is shown in 4.8.5.
5.2.3 Cumulative operation test
5.2.3.1 The cumulative operation test time is the sum of the test time of each test. 5.2.3.2 During the test, the pressure, flow rate and temperature rise shall be measured every 4 hours. 5.2.3.3 The cumulative operation test shall not be less than 50 hours. 5.2.3.4 During the test, the system pressure shall be maintained at the rated pressure. If it is 10% lower than the rated pressure and cannot be adjusted, the test shall be stopped and the nozzle shall be replaced first. When the unit pressure can be restored to the rated pressure, the nozzle shall be deemed scrapped and the test can be continued. 5.2.3.5 If the rated pressure cannot be restored after replacing the nozzle, the sealing pair and the inlet and outlet valves should be checked to determine whether they should be scrapped or replaced. At this time, the accumulated operating time is the life of the wearing parts. 5.2.3.6 After the test, record the wear data of the main moving pairs of the pump and compare them with the data before the test. 5.2.4 Test results and records
During the test, after confirming that the equipment operation has reached a stable operating condition, all instrument readings should be read and recorded at the same time. The number of measurements for each measured parameter should be no less than 3 times, and the arithmetic mean is taken as the measured value. 6 Inspection rules
Inspection is divided into type inspection, factory inspection and sampling inspection. The inspection items are as specified in Table 6. 8
Inspection items
Pump (booster) performance test
Trial operation
Hydraulic system performance test
Abrasive (water) supply system performance test
Electrical system performance test
CNC platform performance test
Safety test
Cutting performance test
Cumulative operation test
Note: √ indicates that it must be carried out; ○ indicates that it is required: × indicates that it is not carried out 6.1 Type inspection
Type inspection must be carried out in the following situations: a) Trial production of new products;
b) During production, such as changes in structure, material, process, etc.; Table 6
c) Type inspection requirements proposed by national quality supervision agencies. 6.2 Factory inspection
6.2.1 Each cutting machine must pass the inspection and have a product certificate before it can leave the factory. Type of inspection
JB/T10351—2002
6.2.2 Factory inspection items include the main machine, pressure detection device, electrical control system, hydraulic system, abrasive (water) supply system, CNC platform, safety protection device, and blasting components and overpressure protection device inspection. 6.3 Sampling inspection
Random sampling inspection is conducted among the products that pass the factory inspection. The safety performance indicators must be qualified once. If other items are unqualified, they must be repaired and retested. If they are still unqualified, type inspection must be carried out again. 7 Marking and packaging
7.1 Marking
7.1.1 The logo of the water jet cutting machine should be located in a conspicuous position. 7.1.2 The water jet cutting machine should have a fixed product label, which should comply with the provisions of GB/T13306. 7.1.3 The content of the label shall include the following: Main machine label
a) Model, name and trademark:
b) Main technical parameters;
c) Manufacturer name:
d) Factory number and date.
CNC platform label
a) Maximum cutting range:
b) Maximum operating speed;
c) Manufacturer name;
d) Factory number and date.
7.1.4 The water jet cutting machine shall be marked with the direction of the prime mover. 9
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