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Technical seminar on plasma spray technique

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Page 1: Technical seminar on plasma spray technique
Page 2: Technical seminar on plasma spray technique

Plasma Coating Technology

Page 3: Technical seminar on plasma spray technique

Introduction

Plasma spraying, is a materials processing technique for producing coating and free-standing 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.

Page 4: Technical seminar on plasma spray technique

Plasma – the fourth aggregate

state of matter

Solid     Gaseous   PlasmaLiquid

Page 5: Technical seminar on plasma spray technique

Plasma Spray Process

Page 6: Technical seminar on plasma spray technique

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.

Activation allows superior subsequent bonding of adhesives and coatings .

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

Page 7: Technical seminar on plasma spray technique

Cleaning Surfaces

Cleaning, Activating and Coating surfaces

Activating Surfaces Coating Surfaces

Page 8: Technical seminar on plasma spray technique

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.

Page 9: Technical seminar on plasma spray technique

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. 

Page 10: Technical seminar on plasma spray technique

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.

Page 11: Technical seminar on plasma spray technique

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

Types of plasma system:

Laboratory system Film system Profile treatment Robot system

Page 12: Technical seminar on plasma spray technique

Plasma laboratory systems for giving unique features to surfaces such as plastic, glass or metal

The Plasmatreater AS 400 plasma laboratory system

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

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.

Page 13: Technical seminar on plasma spray technique

Film systems:

Activation and coating of plastic films

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

Page 14: Technical seminar on plasma spray technique

Profile treatment :

Plasma tunnel for pretreatment operationson complex profiles

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.

Page 15: Technical seminar on plasma spray technique

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

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Selective pretreatment by type and combination of jets

Fixed plasma jet, max treatment, width 13mm.

Fixed plasma jet, max treatment, width 18mm.

Rotary plasma jet, max treatment, width 30mm.

Rotary plasma jet, max treatment, width 40mm

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Industrial applications :

Automotive Engineering

Aviation Industry

Ship building Engineering

Medical Technology Electronics Engineering

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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

Page 19: Technical seminar on plasma spray technique