Preparation process of metal powder

3D printing technology is a rapidly developing emerging technology in the manufacturing industry. It is called "manufacturing technology with the significance of the industrial revolution" and has become an effective means of modern models. It has been applied to the manufacture of molds and parts in the fields of aerospace, automobile and motorcycle, household appliances, biomedicine, etc., and has a unique position in this field. Status. Engineering and teaching research. 3D printing is based on computer 3D design models. It is a software layered discrete and CNC molding system. It uses laser beams, hot melt nozzles, etc. to make metal powder, ceramic powder, plastic, cell tissue, sand, etc. The materials are combined layer by layer, and finally superimposed to form a solid product. The raw materials for 3D printing are very special and must be liquefied, powdered, and silkized.

3D printing metal powder

As the most important part of the 3D printing industry chain of metal parts, 3D printing metal powder is also the most valuable. At the "2013 World 3D Printing Technology Industry Conference", leading experts in the global 3D printing industry made a clear definition of 3D printing metal powder, which refers to a group of metal particles less than 1mm in size. It includes single metal powder, alloy powder and some refractory compound powder with metallic characteristics. Currently, 3D printing metal powder materials include cobalt-chromium alloys, stainless steel, industrial steel, bronze alloys, titanium alloys and nickel-aluminum alloys. However, in addition to good plasticity, 3D printing metal powder must also meet the following conditions: fine powder particle size, narrow particle size distribution, high sphericity, good fluidity and high bulk density.

Preparation process of metal powder

At present, according to the preparation method, the powder preparation method can be mainly divided into reduction method, electrolysis method, carbonyl decomposition method, grinding method, atomization method and so on. Among them, the powder produced by reduction method, electrolysis method and atomization method is widely used as the raw material of powder metallurgy industry. However, the electrolysis method and the reduction method are limited to the production of elemental metal powders, and these methods are not applicable to alloy powders.

Water atomization

In the production of atomized grinding, water atomization is one of the cheap production methods. Because the atomized medium water is not only cheap and easy to obtain, but the atomization efficiency is also excellent. At present, the household water atomization method is mainly used to produce steel powder, diamond tool car body powder, oil-containing pre-alloy powder, hard surface technical powder, iron-based and nickel-based magnetic powder. However, since the specific heat of water is much larger than that of gas, during the atomization process, the broken metal droplets become irregular due to the solidification too fast, which affects the sphericity of the powder. Other metals or alloys with high activity react with water due to contact with water during the atomization process and increase the oxygen content in the powder.

Gas atomization

Gas atomization is one of the main methods for producing metal and alloy powders. The basic principle of gas atomization is the process of breaking the liquid metal stream into droplets, and then solidifying it into powder with a high-speed air stream. Due to its high purity, low oxygen content, controllable powder particle size, low production cost and high sphericity, the powder has become the main development direction of high-performance and special alloy powder preparation technology.

Layered atomization

The layered atomization technology was proposed by Nanoval, Germany, etc., which made a significant improvement to the conventional nozzle. Another advantage of this method is low gas consumption, significant economic benefits, and suitable for mass production of most metal powders. The disadvantage is that the technical control is difficult, the atomization process is unstable, and the output is small.

Overview of 3D metal printing CoCrMo powder

 CoCrMo is one of the Stellite alloys.Stellite is a hard alloy that can withstand various types of wear,corrosion and high temperature oxidation.The so-called cobalt-based alloy. Stellite was originally a binary cobalt-chromium alloy,Later developed into the cobalt-chromium-tungsten ternary composition.Cobalt-chromium-tungsten alloy is an alloy with cobalt as the main component,which contains a large amount of chromium, tungsten and a small amount of nickel,molybdenum,silicon,carbon,niobium,tantalum and other alloying elements,Sometimes containing iron.According to the different components in the alloy,they can be made into welding wire,powder for hard surface welding,thermal spraying, spray welding and other processes,and can also be made into castings and forgings and powder metallurgy parts.

Application of 3D metal printing CoCrMo  powder

Cobalt-chromium-molybdenum alloy is widely used in locomotive diesel engines,nuclear power plant valves,marine diesel engines and various aircraft.

Early cobalt-chromium-molybdenum alloys were produced through non-vacuum melting and casting processes.Later developed alloys(such as Mar-M509 alloy)were produced through vacuum melting and vacuum casting because they contained more active elements such as zirconium and boron.

In general,cobalt-chromium-molybdenum alloys lack coherent strengthening phases.Although the strength is low at moderate temperatures(only 50-75% of nickel-based alloys),it has higher strength at 980°C and good resistance.Thermal fatigue and heat corrosion resistance.It has abrasion resistance and has good weldability.It is suitable for manufacturing nozzle guide vanes and nozzle guide vanes for aviation jet engines,industrial gas turbines,naval gas turbines and diesel engine nozzles.

3D printing metal powder characteristics:additively manufactured metal powder, high sphericity,smooth surface,fewer satellite balls,low oxygen content,uniform particle size distribution,good fluidity and high bulk density and tap density.

Applicable process:CoCrW 3D printing metal powder can be used for laser/electron beam additive manufacturing(SLM/EBM),powder metallurgy(PM),spraying, welding and other processes.

Applicable equipment:3D printing supply can be used for various types of metal 3D

Printers,including British Renishaw,German EOS(EOSINT M series),Concept Laser, American 3D system,laser melting equipment and

Domestic research institutions and enterprises.Research and develop selected laser melting equipment,such as Huaying High-Tech,Platinum,etc.

Powder application:the powder is mainly used for 3D printing in biomedicine

Materials such as teeth,human body brackets and artificial joints.

3D metal printing cobalt chromium molybdenum CoCrMo powder price

The price of cobalt-chromium-molybdenum alloy powder will vary randomly with the production cost, transportation cost, international situation, and the market supply and demand of cobalt-chromium-molybdenum alloy powder. Tanki New Materials Co., Ltd aims to help all industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for cobalt-chromium-molybdenum alloy powder, please feel free to send an inquiry to get the latest price of cobalt-chromium-molybdenum alloy powder.

Supplier of 3D metal printing CoCrMo  powder

As a global 3D metal printing cobalt-chromium-molybdenum CoCrMo powder supplier,Tanki New Materials Co.,Ltd has extensive experience in the performance,application and cost-effective manufacturing of advanced and engineered materials.The company has successfully developed a series of powder materials(Including oxides,carbides,nitrides,single metals,etc.)high-purity targets,functional ceramics and structural devices, and provide OEM services.