Water knife history

The composition of the waterjet cutting machine system 2 900*550

Dr. Norman Franz has long been recognized as the father of waterjets. He is the first person to study ultra high pressure (UHP) waterjet cutting tools.

The definition of ultra high pressure is above 30,000 psi. Dr. Franz is a forestry engineer who wants to find a new way to cut large trunks into wood.

In 1950, for the first time, Franz put heavy weight on the water column, forcing the water through a small nozzle. He achieved a short high-pressure jet (which repeatedly exceeded the pressures used today) and was able to cut wood and other materials. His later research touched a more continuous stream of water, but he found it difficult to achieve continuous high pressure. At the same time, the life of a part is also measured in minutes, not weeks or months today. Dr. Franz has never produced a mass-produced wood cutter. Today, wood cutting is one of the most important uses of ultra-high pressure technology. But Dr. Franz proved that high-speed concentrated water flow has tremendous cutting energy – the use of this type of energy far exceeds Dr. Franz’s dream.

In 1979, Dr. Mohamed Hashish worked at the Flow Research Laboratory and began researching ways to increase the energy of waterjet cutting to cut metals and other hard materials. Dr. Hashish is widely regarded as the father of sanding waterjets. He invented the method of adding sand to ordinary waterjets. He uses garnet (a type of material often used on sandpaper) as a sanding material. With this type of method, waterjets (containing sand) can cut nearly any material.

In 1980, the sanding waterjet was used for the first time to cut metal, glass and concrete.

In 1983, the world’s first commercial sanding waterjet cutting system was introduced and used to cut automotive glass. The first users of the technology were the aerospace industry, who found the waterjet to be the ideal tool for cutting stainless steel, titanium and high-strength lightweight composites and carbon fiber composites used in military aircraft (now used in civil aircraft).

Since then, abrasive waterjets have been used in many other industries, such as processing plants, stone, ceramic tiles, glass, jet engines, construction, nuclear industry, shipyards, and more.

Since its establishment, Huayu Waterjet has been continuously researching water cutting technology. The production technology of Huasheng Technology has been at the international advanced level. It not only introduces advanced laser interferometers and other measuring instruments, but also has a dedicated quality control team. To perform rigorous testing of each process. With the joint efforts of all Huaying people, Huasheng Technology Co., Ltd. has extended its sales market to more than 20 countries and regions including North America, South America, Europe, Australia, Southeast Asia, Central Asia and the Middle East. With rich experience and considerate service, Huasheng Technology has become a Chinese supplier serving many international buyers. Because of concentration, so professional. Huasheng Company has successively developed new water cutting machine products, such as glass special water cutting machine and marble special water cutting machine. Huaying people are becoming the “head” of the water cutting machine industry in China and the world.

“Refining water into a knife, taking honesty as a rudder” is always a portrayal of the entrepreneurial spirit of Huaying people. Welcome friends from all walks of life at home and abroad to contact Foshan Huasheng Technology and visit our factory. Foshan Huasheng Technology Co., Ltd. sincerely hopes to create and share success with all customers.

What is a waterjet cutting?

What is a waterjet cutting? A water jet is a tool that cuts an object by jetting a water jet that is ejected at a high pressure. The water jet is characterized by no thermal stress, so that the cut material has no chemical change and no deformation during the high temperature cutting process. According to the pressure of the output, the waterjet is divided into two types: ultra-high pressure and low pressure. SAME waterjet can use ordinary ultra-high pressure technology to press ordinary tap water to pressure of 250-420Mpa, and then pass the gemstone with inner diameter of about 0.15-0.35mm. The nozzle jet forms a high-speed jet with a velocity of about 800-1000 m/s. It is commonly known as a water arrow. The water arrow has high energy and can be used to cut soft-based materials. Such waterjets can not be used for fire, high temperature. It is also called “safe water jet cutting”.

1 Basic introductionThe water jet is an ultra-high pressure technology that can press ordinary tap water to a pressure of 250-400 MPa, and then spray through a gem nozzle with a bore diameter of about 0.15-0.35 mm to form a high-speed jet with a speed of about 800-1000 m/s. For water arrows, the water arrow has a high energy and can be used to cut soft-based materials. If you add the right amount of abrasive to the water arrow, you can use it to cut almost all soft and hard materials. Adjust the pressure and flow of the water jet, you can use it to clean a variety of objects, such as degumming, paint removal, rust removal, etc. We can also use ultra-high pressure technology for autoclaving, food preservation and many other beneficial work for humans.

2 main featuresIt can be used for any curve of any curve cutting process (other than water cutting, other cutting methods will be limited by the material variety); no heat and harmful substances are produced during cutting, the material has no thermal effect (cold cutting), no need after cutting Or easy to secondary processing, safe, environmentally friendly, low cost, fast speed, high efficiency, can achieve arbitrary curve cutting, convenient, flexible and versatile. Water cutting is currently a highly applicable cutting process.

3. Waterjet classificationAccording to the situation of Gaza: water cutting is divided into two methods: sandless cutting and sand cutting.Divided by equipment: divided into large water cutting and small water cutting.Divided by pressure: divided into high pressure type and low pressure type, generally with 100Mp as the limit. Above 100Mp is a high pressure type, and below 100Mp is a low pressure type. More than 200MP is ultra-high pressure type.Divided by technical principle: divided into premixed and postmixed.It is divided into safe cutting and non-safe cutting. The difference is mainly in the water pressure. Low-pressure water cutting below 100Mp can be applied to special industries such as hazardous chemicals, petroleum, coal mines and hazardous materials. [After a large number of experiments, it was found that when the water pressure exceeds a certain threshold, even pure water will detonate certain sensitive chemicals, and the sandy water cuts because the water contains abrasive sand, the potential energy of the sand and the impact force collide with the object. The energy produced can also cause instability of special chemicals. After a lot of experiments and demonstrations, the threshold is about 237.6MP. Therefore, in the water cutting industry, people are mainly used in the mechanical processing industry for water cutting of more than 200MP.

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