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Using skills of water knife and water cutting machine

2020-12-21 16:14:58
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Through the use of these water cutting equipment skills, so that you have a more in-depth understanding of the water knife process. Some of these skills are easy to understand, while others can only be mastered through practice.

1. Cutting thick materials

When cutting materials with thickness less than 2.5, the output of medium or large cutting head is not high. If necessary, small parameter combinations can be used), and multi head cutting can be considered to increase production.

2. Air gap encountered during cutting

Avoid cutting air gap larger than 0.5mm. The nozzle has a tendency to diverge in the air gap, so the surface will be rough when cutting the lower layer. When stacking and cutting, keep the sheets neatly stacked together.

3. Smaller abrasive mesh

A smaller mesh size (120 mesh or less) will reduce the speed slightly, but will produce a smoother surface (compared with 80 or 50 mesh).

4. Production cost is calculated in per inch

The cost of production is calculated per inch, not per hour. The cost per hour of running a sanding water knife is not very important. It's important how many parts you can produce in a given period of time. Some users mistakenly believe that the operation cost can be reduced as much as possible by reducing the injection flow rate. Although abrasive accounts for 2 / 3 of the operating cost of the sanding water jet, you must quickly produce parts to offset the recurrent expenses (labor, facilities, rental expenses). Drive all horsepower and use high sand jet speed to speed up the cutting speed as much as possible.

5. Increase or decrease the water pressure through the controller

If you regularly cut composite materials, glass and stone, the system should have the ability to increase or decrease the water pressure through the controller. At the same time, you should also study vacuum assisted technology or other technologies to improve the success rate of puncture fragile or laminated materials.

6. Control system specially designed for process

The control system specially designed for the process is usually more efficient and easier to use than the general multi process control.

7. Automatic loading and unloading

Most machines don't use automatic up and down technology, such as shuttles. Only when material handling accounts for a significant proportion in the production cost of parts, can we consider using automatic landing. 90% of the sanding water knives are loaded and unloaded manually, or with the help of simple crane, boom crane or forklift.

8. Ordinary tap water

The water knife system uses ordinary tap water. 90% of pure water jet and sand jet users only require water to be softened before entering the supercharger through the water filter at the pump inlet. Water will be used for "desaturation" and purification techniques. This water can easily absorb ions from the surrounding environment, such as metals in pumps and high-pressure lead pipes. Reverse osmosis and deionization technology can greatly extend the life of the nozzle, but also cause expensive damage to the supercharger and high-pressure pipe. Although the nozzle is cheap, the loss of high pressure cylinder, check valve and end cover will be far greater than the benefit of nozzle life extension.

9. Underwater cutting

Underwater cutting can reduce the atomization of surface or upper edge caused by sanding water jet cutting process. Underwater cutting can greatly reduce the cutting noise, and make the working environment more clean and orderly. The disadvantage is that the operator can't see the spray cutting clearly in the cutting process. If operators object to underwater cutting, electronic performance monitor can be considered. These monitors will detect peak deviations in cutting performance and stop the machine before parts are damaged.

10. Different abrasive mesh

If you plan to use different mesh abrasive for different work, consider adding a small or large sand bucket. If you don't prepare sand bucket for regular mesh, it may lead to production stop and make your production very complicated.

11. Reserved reclaiming port

The reserved reclaiming port can prove the effectiveness and convenience of cutting materials with thickness less than 8mm. Although reclaimers usually require secondary treatment for grinding off these points, the use of reserved reclaimers can make the processing of materials faster - slicing and cutting parts are still integrated and easy to unload. The harder the material is, the smaller the reserved reclaiming port should be. Consult your manufacturer for more detailed advice.


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