Thermal spray technology for paper industry

At present, the most common surface repair methods in the paper machine industry are electroplating, overlay welding, laser cladding and thermal spraying. Among them, the thermal spraying process is favored by more and more customers due to its advantages of environmental protection and high efficiency.

 

Surface solution for dryer, calender roll and rewind machine bottom roll

Material: 

Tungsten carbide series powder (Woka-C 3652 equal to WISDOM WC-10Co-4Cr, Woka-C 3108, Woka 3118, Woka 3607)

Spraying equipment: 

DJC gas supersonic spraying system

UniCoat Pro fuel supersonic spray system

Advantage: 

1. The carbide cermet layer formed on the surface of the substrate has a bonding strength of more than 70 MPa, a porosity of <1%, with a uniform and dense structure, and a hardness of >1100 HV0.3

2. It can improve the properties of products, such as surface high temperature resistance, wear resistance, reduce downtime and extend service life

Yang Ke Cylinder Surface Solution

Material: 

Amorphous alloy material (Metco 8280, Metco 8295, equal to WISDOM FeCrBSi, Metco 8400)

Spraying equipment: 

SmartArc intelligent arc spraying equipment

Advantage:  

1) Excellent wear resistance and extend cylinder maintenance cycle

2) Improve heat transfer efficiency and save energy

3) Stabilize the line shape of the cylinder surface, reduce paper breaks and increase production efficiency

4) High amorphous content and improved corrosion resistance

Scraper surface solution

Material: 

Woka-C 3660FC, Woka 3652 equal to WISDOM WC-10Co-4Cr, Metco 6485, Woka 7202

Spraying equipment: 

DJC gas supersonic spraying system

UniCoat Pro Plasma Spray System

Advantage: 

1) Unique micro-nano material ensures high density and toughness of the blade

2) Ensure no deformation and no micro-crack during scraper production

3) Different materials and equipment solutions for various applications such as cleaning blade, coating blade and creping blade

 

Surface solution for press rolls and guide rolls

Material:

Chromium oxide series Cr2O3 (Metco 6156, Metco 6485, Amdry 6462)

Spraying equipment:

UniCoat Pro plasma spray system

Sinplex plasma spray gun

Advantage:  

1) Unique spray gun patented design, improving the production efficiency of roller spraying

2) Matching materials can be provided according to different line pressure requirements

3) High density of coating, high corrosion resistance and wear resistance performance

 

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