MAINTENANCE OF WATERJET CUTTING MACHINE

Views: 99 Author: HEAD Ministry of Foreign Trade Publish Time: Origin: HEAD waterjet

The Operating Instruction of CNC Waterjet Cutting Machine


1. The operator must be trained professionally before real operating.
2. The operator shall be acquainted with instruction of waterjet cutting machine, and operate according to the Operating Instruction strictly, laypeople forbidden.
3. Please check whether power supply, water supply and air supply are in place before starting up.
4.  Ensure the environment temperature not lower than 10°C.
5. Confirm the inlet water pressure not less than 0.2MPa, and the pressure not less than 0.6MPa
6. Make sure the storage tank of deionization system there being always saturated brine salt. (Namely industrial salt)
7. Deionization system may not power off. (After power off shall be in accordance with the instructions to adjust the regeneration time)
8. Make sure the automatic lubrication pump oil level is higher than the minimum oil level.
9. Unscrew the overflow valve after high pressure system maintenance, and then adjust working pressure gradually, after pressure maintaining for 3 minutes to work normally.
10. Must replace water filter cartridge timely for high pressure system and deionization system.
11. Cutting operations shall be behind the machine back to the mechanical zero point
12. Removing high pressure parts forbidden when existing pressure inside the equipment.
13. Putting hand under the cutting head is strictly forbidden
14. Equipment should be accurately grounding, it is strictly prohibited to maintain and repair electrical components when existing pressure.
15. Turn off the power, water and air sources when equipment is not in use.
16. Wipe the machine every day before off work, ensure the equipment clean.


Water jet cutting machine regular maintenance instruction:
                                 

No.                    ItermperiodTools and methodsstandard
1High pressure systemIf water or oil leakage from the cylinder head observation hole or not     Per shiftSight check
 
The oil leakage frequnency from the cylinder observation hole,could not exceed 20 drops
2If water leakage from outlet pipe and every joint or notPer shiftSight checkEvery connection joints observation hole without water leakage
3If oil leakage from every joint and connection of oil systemPer shiftSight checkEvery connection joints without oil leakage
4If heat generated from High and low pressure one-way valve or notPer shiftTouch with handThe same temperature in both of the high and low pressure one-way valve body and other parts
5Grinding low pressure one-way valve core, valve padEvery100 hoursgrinding plate and the metallographic sandpaperSmooth surface without any defect
6grinding high pressure one-way valve core, plugEvery100 hoursgrinding plate and the metallographic sandpaperSmooth surface without any defect
7Change the water filter cartridgeevery 300 hours
The pressure difference is higher than 0.1 MPa
8Replace the high pressure sealing ringEvery 400 hoursHigh pressure seal disassembly toolingInstalled in the right direction, no leakage
9 
Replacement of low-pressure valve core, screws
Every 500 hours
Abrasive valve core and plug head flat to flat without any defects, screw thread in the thread glue
10Replace the high pressure one-way valve core, valve pad, springEvery 500 hours
Abrasive valve core, valve cushion flat to flat without any defects, no dead point card dead after spring load
11Replace the low pressure sealingEvery 2000hours /1 yearTake doen the tooling for low pressure sealingInstalled in the right direction, no leakage
12clean oil tank and replace the hydraulic oilEvery 2000 hours/1 year
Cleaning tank wall without welding slag, foreign body
13High pressure water switch valveIf leakage from the High pressure water switch body observation hole or notper shift 
Sight check
Without water leakage,replace the Hydrosphere sealing  
14If water out from the sand pipe after turning off the water switch valvePer shiftSight checkReplace the valve core and valve pad, after water shut-off ,from the sand pipe or into the sand without the water
15Cutting headWhether water outlet from sand pipe disperse,cutting speed slow down obviously
 
Per shiftSight checkOpen sand tube removed after high pressure, water flow from the nozzle in the nucleus, the need to change the new sand tube, or change the nozzle
16For the sand pipe, into the sand is damagedPer shiftSight checkReplacement of new sand pipe

 
 
 

No.itemperiodTols and methodsStandard
17Sand valveWhether the Sand valve connecting tube broken to form a gas leakPer shiftSight checkReplacement of new sand valve connection joints
18Clean the dust in the sand valve
 
Per shiftAir rifle
no dust sand in the valve cavity
19Replace sand M10 throttling valve screws 
Every 400 hours/2 months
Sight checkReplace M10 throttle screw, and adjust the screw on the bottom of the sand to valve movement, the distance between valve core is about 0.5 mm
20Cutting tableCheck the oil lubrication system status and cleaning screw and guide railEvery 200 hours/1 monthOil gun,open protective coverX, Y, Z screw nut and guide to the transmission system of each slide block are lubricating oil supply; Will adhere to the guide rail, screw the dust is wiped clean after the lube oil gun evenly
21Check accuracy of platformEvery 1000 hours/6 monthsVermier caliper
 
Cut a diameter of 150 mm round and the side length is 150 mm square, measured with a caliper. Roundness error control in 0.10 mm, diagonal error control in 0.05 mm
22Measuring the X axis and Y axis screw nut backlashEvery 2000 hours/123 monthsDial indicatorBy changing the system parameters to compensate or direct adjustment screw nut
 
23cleaningBefore and after shift cleaning equipmentPer shift
Surface of equipment shows primary color
24After shiift cleaning the equipment around the ground and auxiliary facilitiesPer shift
The ground and auxiliary facilities, cleaness without pollution
25Wipe The whole equipment inside and completelyPer week
Equipment surface and not easily clean clean corner are the primary colors, in addition to the surface of lubrication equipment, other parts without oil
26othersNeat tools and accessories, set regularlyPer shift
Tools and accessories complete, neat standard
27Damage parts and inactive parts classified settedPer shift
Damaged parts separately store, couldn't stay with mixed with spare parts
28 fasten the electrical control cabinet and fastening screwEvery month
Electrical cabinets cable fixed screw fastening without shaking




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