Technical Seminar On Plasma Spray Technique

Plasma Coating Technology

Introduction Plasma spraying, is a materials processing technique for producing coating and freestanding parts using a plasma jet. Deposits having thickness from micrometers to several millimeters can be produced from a variety of materials including metals, ceramics, polymers and composites.

Plasma – the fourth aggregate state of matter

Solid

Liquid

Gaseous

Plasma

Plasma Spray Process

Pretreatment process using Plasma technology for cleaning, activation or coating 

In the course of cleaning, Plasma surfaces are freed of mould release agents and additives.

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Activation allows superior subsequent bonding of adhesives and coatings .

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Due to coating the surface properties of a composites are improved.

Cleaning, Activating and Coating surfaces

Cleaning Surfaces

Activating Surfaces

Coating Surfaces

Cleaning surfaces by means of plasma technology Using plasma systems even the finest particles of dust initially adhering to the surfaces are removed. The wastage rate of high-quality paint jobs, for example in the automotive industry, is sharply reduced. Plasma treatment process consumes the particles by reaction and removes them completely from the substratum.

Activating surfaces by means of plasma technology  Plasma technology is suitable for

activating surface materials such as plastics, metals, fabrics or even glass. Since plastics consist of long polymer chains. These non-polar surfaces are difficult to bond and coat. However, as a result of the structural modification created by Plasma treatment systems these surfaces may now become more effectively coated and bonded.

Coating surfaces by means of plasma technology

 PET films, aluminum foils, fabrics,

textiles, glass, various plastics, metals and noble metals can be coated with the aid of this plasma technology.  Plasma technology can be utilized to harden materials, for example in tool production, or to create plastic surfaces very receptive to bonding.

Plasma systems: Efficient, easy to use for almost any process

Types of plasma system:

Laboratory system

Film system

Profile treatment

Robot system

Plasma laboratory systems for giving unique features to surfaces such as plastic, glass or metal  The pretreatment parameters for cleaning, activation and coating in numerous industrial applications can be determined by means of a plasma laboratory system.  Depending on the requirements for the desired properties of a material all the parameters needed are evaluated by the Plasma laboratory system with a standard installation

The Plasmatreater AS 400 plasma laboratory system

 All factors such as speeds, offsets or spacing of the plasma jets, are precisely calculated. Plasma laboratory systems are under software control which allows precise management.

Film systems:  By means of Plasma pretreatment, foils and films can be treated both in part and over their entire surfaces. In doing so the mechanical properties of the materials remain unchanged  By selectively controlling treatment parameters such as temperature, jet positioning, jet width and speed these thin materials can be efficiently cleaned, activated or coated without the use of additional substances

Activation and coating of plastic films

Profile treatment :  In the pretreatment of profiles made of materials such as plastics, aluminum, plasma technology is in widespread use. This plasma process has become very well established in the automotive industry.  Plasma processes serve to clean and activate the support material. Utilizing our selectively focused plasma beam it is possible to treat even complex profiles without difficulty. Plasma tunnel for pretreatment operations on complex profiles

Robot systems:  In robot system, plasma jet systems guarantees not only improved corrosion protection but also high resistance to stone strikes.  Robot systems can be equipped with patented rotary jets for activating and cleaning particularly complex parts. It ensures improved product quality and considerable cost savings. Complete automated solutions for integrated applications

Selective pretreatment by type and combination of jets

Fixed plasma jet, max treatment, width 13mm.

Rotary plasma Fixed plasma jet, Rotary plasma jet, jet, max max treatment, max treatment, treatment, width 18mm. width 30mm. width 40mm

Industrial applications :

Automotive Engineering

Medical Technology

Aviation Industry

Ship building Engineering

Electronics Engineering

ADVANTAGES & DISADVANTAGES: ADVANTAGES: It can spray very high melting point materials such as refractory metals like tungsten and ceramics like zirconium unlike combustion processes. Plasma sprayed coatings are generally much denser, stronger and cleaner than the other thermal spray processes. Resist wear better than the same material in cast or wrought form. DISADVNATAGES:  The plasma spray processes are relative high cost and complexity of process