Waterjet Cutting Skills

1. Introduction of waterjet

When cutting metal and hard materials such as various stone, glass, ceramics and other materials, the sand and water jet are mixed to enhance the cutting ability. This high-speed waterjet can cut almost any material.

2. Waterjet cutting skills

(1) Cutting thick materials

When cutting materials with a thickness of less than 2.5, the output of using a medium (50HP) or large (60 to 80HP) cutting head is not high. If necessary, a small parameter combination (25HP) can be used, and multi-head cutting can be considered to increase production.

(2) Encounter an air gap during cutting

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

(3) Automatic loading and unloading

Most machines do not use automatic up and down technology, such as shuttle machines. Only when material handling occupies a significant proportion of the production cost of the part can you consider using automatic up and down technology. 90% of waterjets are loaded and unloaded manually, or with the help of simple overhead cranes, boom cranes or forklifts.

(4) Ordinary tap water

The waterjet system uses ordinary tap water. 90% of users of pure waterjets and sand jets only require the water to be softened before it passes through the pump inlet filter and enters the booster. Reverse osmosis (RO) and deionization technologies are used to purify water into "unsaturated" water. This water easily absorbs ions in 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 the high-pressure cylinder, check valve and end cap will far outweigh the benefits of the extended nozzle life.

(5) Underwater cutting

Underwater cutting can reduce surface or upper edge fogging caused by waterjet cutting. Underwater cutting can greatly reduce the noise during cutting and make the working environment more tidy and orderly.

(6) Reserve the reclaiming port

The reserved reclaiming port can prove the effectiveness and convenience of cutting materials with a thickness less than 8mm. Although the reclaiming port usually requires secondary processing to grind off these removal points, the use of the reserved reclaiming port can make the processed material more quickly sliced, and the cutting parts are still integrated, which is convenient for unloading. The harder the material, the smaller the reserved material opening.