What are the characteristics of the water cutting machine, what is the principle of the water cuttin

The thickness of the metal sheet cut by waterjet is recommended to be no more than 10m, and the thickness of foam material such as sponge is recommended to be no more than 30m. Waterjet cutting is also known as waterjet cutting or waterjet cutting. High-pressure water jet cutting is a special processing method.

Use a supercharger to pressurize the water to reach a pressure of 10MPa to 40MPa or even higher. Water acquires pressure energy and is then ejected from a tiny nozzle, converting pressure energy into kinetic energy, resulting in a high-velocity jet. Cutting is to use the kinetic energy of this high-speed jet to destroy the workpiece, to achieve the purpose of cutting and forming.

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Water cutting machine shui qie ge ji

Water cutting machine is superior to other processing technologies, such as flame cutting, plasma processing, laser processing, EDM, turning and milling processing, etc. At the same time, waterjet does not produce harmful gases or liquids, does not generate heat on the surface of the workpiece, and it is truly versatile, high-efficiency, cold cutting processing.

For example, in metal cutting, various processing methods coexist, including knives, lasers, flame cutting (plasma cutting), EDM, wire cutting, water cutting and other processing methods. All kinds of cutting methods have their own advantages, but they all have certain limitations, and they occupy a part of the market. However, among the many cutting means, only water cutting belongs to cold cutting, which directly uses the kinetic energy of abrasive water jet to cut the metal to achieve the purpose of cutting, and there is no chemical change in the cutting process, and it has no impact on the physical and chemical properties of the cutting material, no thermal deformation, narrow cutting slit, high precision, smooth cutting surface, clean and pollution-free and other advantages, and can process materials that cannot be processed or difficult to process by traditional processing and other processing methods, such as glass, ceramics, composite materials, reflective materials, chemical fibers, heat-sensitive materials, etc.

1) The roughness of the cutting metal is up to m, and the cutting accuracy is up to m, which can be used for precision forming and cutting;

2) No reflective effect and edge loss in the cutting of non-ferrous metals and stainless steel;

3) One-time forming and cutting of carbon fiber composites, metal composites, metal composites with different melting points and non-metals;

4) Cutting of low melting point and flammable materials, such as paper, leather, rubber, nylon, felt, wood, explosives and other materials;

5) Cutting in special sites and environments, such as underwater and combustible gas environments;

6) High hardness and insoluble material cutting, such as stone, glass, ceramic, cemented carbide, diamond, etc.

The principle of water cutting is that the water flow under high pressure generates speed to form the so-called "waterjet" at ultra-high speed, which uses a high-pressure pump to pressurize the sealed water, and sprays it through the extremely fine nozzle made of high-grade cemented carbide, sapphire, diamond, etc., to cut the material.

To do this, there is a relatively high demand for water, pipes, and vents. For example, the waterjet is ejected with a high-pressure tool to pressurize the water, and it must have a very high pressure to cut the hard cutting material, so the pipe must be able to withstand extremely high pressure, which is much greater than 700 megapascals, because the thin steel plate (the material being cut) itself can withstand the pressure of 700 megapascals. Secondly, it is wrong that the water used for waterjets is completely free of impurities.

Because the water pressure is much greater than 700 megapascals, pure water will always wear out and leak when it comes to sealing equipment such as pipes, no matter how good the sealing performance is. In order to solve this problem, 5% soluble emulsified oil is added to the waterjet water to improve the sealing effect. For high-pressure pumps, some oil should also be added to improve its sealing performance.

As mentioned above, the nozzle of the waterjet is made of cemented carbide, sapphire and other materials, the diameter of the nozzle is only millimeters, and the inner wall of the hole is smooth and flat, which can withstand the pressure of 1700 megapascals, so the high-pressure water sprayed can cut the material like a knife. Some water also has some long-chain polymers, such as polyethylene oxides, added to increase the "viscosity" of the water, making the water sprayed out like a "thin line".

Although the waterjet cutter was only developed in 1968, it seems that its development history of just over 50 years is rather shallow compared to other cutting technologies. However, in recent years, waterjet cutting has also developed quite perfectly, and even has the reputation of universal cutting machine, so how does it work?

Summary. Hello, water cutting processing, is the use of ultra-high pressure technology, can be ordinary tap water pressurized to 250-400MPa pressure, and then, through the inner diameter of the gem nozzle, jet formation of a speed of about 800-1000m s of high-speed jet, commonly known as "water arrow", the water arrow has a high energy, can be used to cut soft matrix materials.

Hello, water cutting additives, is the use of ultra-high pressure technology, can be the ordinary tap water pressurized to 250-400MPa pressure, and then, through the inner diameter of the gem nozzle quietly, jet formation speed of about 800-1000m s of high-speed jet, commonly known as "water arrow", the water cover wide wheel arrow has a high energy, can be used to cut soft substrate materials.

Relatively good.

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Ordinary water passes through an ultra-high pressure booster to pressurize the water to an ultra-high level.

press, and then through a tiny gemstone nozzle hole to form a water arrow, this water arrow can.

Do a variety of surface treatments and cut any material except diamonds and tempered glass.

Water cutting ultra-high pressure water cutting machine, also known as waterjet and water jet, is a high-energy (380MPa) water flow generated by ordinary water after multi-stage pressurization, and then through an extremely fine ruby nozzle (, jet cutting at a speed of nearly one kilometer per second, this cutting method is called ultra-high pressure water cutting.

The CNC waterjet cutting machine is composed of five parts: ultra-high pressure generator, CNC machine tool, automatic abrasive conveying system, CNC system, and integral cutting head.

Water jet cutting machine tool is a multi-purpose, perfect performance of cutting equipment, its biggest feature is non-heat source of high-energy jet beam processing, no thermal process in cutting, so it can cut all metal and non-metal materials, especially various thermal cutting methods are difficult to do or can not process materials. It has the characteristics of fast incision, smooth incision, no dust, no thermal deformation, no pollution, and reduced material waste.

It can be cut: titanium alloy, copper plate, steel plate, aluminum plate, cast iron, granite, marble, ceramic tile, chemical fiber, wood, cloth, paper, leather, plastic and other materials. It has been applied to aviation, military, stone, construction, decoration and other finishing enterprises.

There are three main uses of water cutting machine, one is to cut non-combustible materials, such as marble, tiles, glass, cement products and other materials, which are materials that cannot be processed by thermal cutting; The second is to cut combustible materials, such as steel plates, plastics, cloths, polyurethane, wood, leather, rubber, etc., these materials can also be processed by thermal cutting in the past, but it is easy to produce burning zones and burrs, but water cutting processing will not produce combustion zones and burrs, and the physical and mechanical properties of the cut materials do not change, which is also a major advantage of water cutting; The third is to cut flammable and explosive materials, which cannot be replaced by other processing methods.

Compared with other cutting methods, waterjet has incomparable advantages. Water cutting is universal cutting, when you feel that the thickness of laser and plasma can be cut is too thin, the burr is too large, and the heat affected zone is unfavorable, you can consider using water cutting; When you feel that the burr of flame cutting is too large, the roughness is too poor, and the heat-affected zone is too large, you can consider using water cutting; When you feel that the speed of wire cutting is too slow and you can't cut non-conductive materials, you can consider using water cutting; When you feel that the milling method produces a lot of scrap chips and causes a lot of waste, you can also consider using water cutting, because water cutting does not produce waste chips, but cuts the whole piece, and most of the materials that are separated by water cutting processing are available; When you feel that the use of circular saws and band saws is too slow and you can't make a non-straight cut, you can still consider watercutting; When you cut flammable and explosive materials or cut in a flammable and explosive environment, you must consider using water cutting; When you don't want to produce toxic by-gases, no secondary processing, no thermal effects or deformation or micro-cracks, and want to produce good cutting quality and be able to cut small holes at the same time, you should consider using a water cutting machine.

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For some metal parts, the punching and shearing process method can be adopted, the efficiency is high, the speed is fast, but a specific mold and a cutter are required, and the water cutting is flexible compared with the cutting method, and the cutting processing of the workpiece of any shape can be carried out at any time, especially in the case of material thickness, high hardness, etc., the punching and shearing process will be difficult or impossible to realize, and the water cutting method is more ideal; Flame cutting is also a commonly used cutting process in the metal field, the thickness range of cutting is very large, but compared with water cutting, its thermal effect is obvious, cutting surface quality and accuracy are poor, in addition, water cutting can well solve the cutting processing of some special materials such as high melting point, alloy, composite materials, etc. In glass, stone, ceramics and other cutting and processing industries, the traditional method is to use diamond cutters to cut, saw, mill, etc., the thickness range of cutting is very large, the speed is fast, but for the conventional thickness of the plate, the water cutting can be high-precision arbitrary curve cutting processing, the yield is high, the production cost is reduced, and the added value of the processed products is greatly improved. What happens when a waterjet touches the human body when a waterjet cuts?

At present, according to statistics, the accident rate of waterjet users is much lower than that of ordinary machine tool users. When cutting, no part of the body should touch the area through which the water jet passes, and the water knife that sharpens the iron like mud will cause serious injury to the human body. Will the waterjet equipment burst due to excessive pressure?

When the pressure is too large, the water flow will overflow from the safety hole, so as to reduce the internal pressure and not produce blasting.

Water cutting is used to cool down other cuts are not.