High Hardness Tungsten Carbide Waterjet Cutting Nozzle

Waterjet, that is, water as a knife, the real name of high-pressure water jet cutting technology. Used in the aerospace military industry,It is favored for its cold cutting without changing the physicochemical properties of the material. After the continuous improvement of the technology, the grinding of garnet sand, silicon carbide and other abrasives in the high-pressure water assisted cutting, greatly improving the cutting speed and cutting thickness of the waterjet. Waterjet has been widely used in ceramics, stone, glass, metal, composite materials and many other industries. Currently in China, the maximum pressure of waterjet has been 420MPa. Some technologically advanced companies have perfected 3-axis and 4-axis waterjets, and 5-axis waterjets are also maturing.
Our tungsten carbide waterjet nozzles inner tube is high finish blast hole, and the use of our unique polishing technology pores to keep the hardness of inside waterjet nozzles is same as the outside of water jet nozzles. Comparing to other common tungsten water jet nozzles,higher hardness, higher density, higher wear resistance, higher stability.Consistent and long service life.

  

Material: Nano Carbide / ultrafine grain tungsten carbide

Density: 15.7g/cm³

Rockwell hardness: 96HRA

Size: as below and also can cutomize any size

Welcome to contact us to get the sample to test our waterjet nozzles good quality!

Please let us know the clear size including OD,ID & length(mm).
 
Unique advantage of tungsten carbide water jet nozzles
1. Adopt supermicron grain size, which can result in  better wear-reseistance and longer life span.
2. Content of cobalt: below 0.6%.
3. Super oxygen-resistant
4. Using HIP sintering which can increase the performance of carbide greatly.
5. Precision Ground and polished

Physic character of tungsten carbide water jet nozzles
1. Long life span:  80 hrs for finish grinding, 140hrs for rough grinding
2. Density:15.45g/cm3 -15.60 g/cm3
3. Hardness:2000Mpa-2400Mpa
4. the tolerance of polish and ground can be +0.005/-0.005m

Application of tungsten carbide water jet nozzles
1.For cutting metallic material, is used for architectural decoration, such as stainless steel;To make and cut the crust of machine equipments;To cut all kinds of metallic spare parts.
2.For cutting glass, is used for household electrical appliances,barthroom and architectural decoration, craftwork and automobile.
3.For processing tiles, stones and other building materials,to make very complicated jigsaw and mural;Can art creation of any shapes.
4.Used for composites, bulletproof material, soft material ,pharmaceutical and others With robot arm to cut automotive interior components;To cut foam, sponge, paper, rubber, nylon, carpet, pharmaceutical etc.

  

Carbide production

The productionprocess of powder-metallurgical products basically includes the four steps of powder preparation, forming, sintering andfinishing.

Tungsten carbide production
The APT (ammonium para-tungstate) is calcined into tungsten oxide under high te-mperature. Subsequently the oxide is reduced to tungsten metal in a hydrogen atmosphere. The metal powder is then mixed with carbon and carburised under inert atmosphere at high temperatures. The production parameters are decisive for the WC grain size in the sintered carbide.

Powder preparation
The tungsten carbide is intensely mixed with the binder metal cobalt, nickel or iron, various grain growth inhibitors and materials,which promote compaction, by wet grinding so that a homogeneous suspension is created. Afterwards, the suspension is dried in a spray tower to produce a granulate with good flow characteristics. This granulate represents the basis for all forming processes.

Metal forming
The objective of the forming process is to obtain a near net shape sample. Pressing is normally carried out at room temperature with pressures reaching up to several tons per square centimetre.There are several ways of pressing blanks:During isostatic cold pressing the powder is filled into an elastic flexible hose and pressed into acompacted form through high liquid pressure. The powder blocks which are produced in this way can then be processed mechanically. All common machining methods like milling, cutting, drilling or turning maybe applied.In uniaxial pressing the pressing tool consists of a die and an upper and a lower punch. The carbide powder is filled into the die and then compacted to create the so called green carbide,which is ejected from the pressing die.Extrusion pressing is mainly used to produce rectangular bar
or cylindrical rod, with or without axial hole(s). A plasticiser is added to the powder. The resulting paste is pressed through an extrusion nozzle. Before sintering, the plasticiser must be evaporated in special drying furnaces. Metal Injection Moulding (MIM) is a process used to produce
more complex forms which cannot be produced by direct pressing. The paste preparation is similar to the extrusion process.

Sintering process
The sintering process converts the blank into a homogeneous and dense carbide with a high level of hardness. The material is sintered at temperatures between 1,300 and 1,500 °C (liquid phase sintering) and sometimes also at high pressure (up to 100 bar). The volume is reduced by up to 50 % during this process.

Finishing
In order to achieve the final requirements of surface finish, tolerances,etc. carbide parts can be subjected to a series of finishing processes such as grinding, spark erosion and coating.


Zhuzhou Huijin Cemented carbide Co., Ltd is located in Zhuzhou City, Hunan Province, China, where is the largest tungsten carbide producing area in China. Our main pr-oducts inclue: Tungsten carbide rods, carbide strips, carbide dies and bushes, tungsten carbide roll rings, carbide disc cutters, carbide end mill cutters, carbidestud and pins, tungsten water jet cutters, precision tools, tungsten carbide grits and powder, welding rods, ceramet inserts, PCD and CBN tools, non-standard and deep-processing products and so on. We also provide very good quality of boron carbide, silicon carbide nozzles. 
Technology and Quality creates a bright future.Looking forward to your cooperation! 



Our company gathered the professional staff members for designing, producing and saling. Our workers are well trained and experienced. Our team is honest, positive, keeping promise, working hard and carefully. We sincerely hope we can provide our clients with good quality, moderate price together with professional service. We have advanced equipment, test facilities and professional employees. We strictly carry on ISO9001: 2008 requirements to guarantee the quality.