FIXING SYSTEMS

Matrox is installed by mechanically fastening it to the substrate using bolted or welded fasteners. Both types are acceptable and are usually chosen based on the requirements of the application and the structure being lined.

In order to fix linings in position, the sheet is always pre-drilled at the fixing points using a special drill or CNC Router. The distance between the individual fixing points depends on the geometry, material

thickness and the material of the container being lined, the operating conditions and the type of fixing process selected.

When the sheets are bolted into position with bolts and hex nuts, we recommend a distance of 50 mm. The distance between the holes and the edge of the sheet should not exceed 50 mm. When the pre-drilled lining sheet is positioned in the container it is used as a template for welding. For stud welding, stud is welded to match a hole in the sheet to the metal surface below.

POLYSTONE CAPPED DEADBOLT INSTALLATION SYSTEM

A hexagon nut is then screwed onto the bolt. For lining purposes, nuts and threaded bolts, size M10 have proved to be most suitable. For simpler installation on uneven surfaces, we have special threaded bolts with predetermined breaking points.

INSTALLATION ADVANTAGES

Easy removal of the sheets
Ideal applications - For thicker sheets >12mm

Equipment required:

• Suitable graduated drill
• Stud-welding unit
• Threaded studs (if necessary with pre-determined breaking point)
• Hex nuts
• Fixing tool for tightening the disk nuts.

EDGE PROTECTION

When installing all types of lining, the top row of sheets must be protected by a sealing strip to prevent material from working its way under the sheets. The strips may be of aluminium (truck bed) or stainless steel plates. When fixing the strips, ensure that the material can expand and contract freely due to thermal effects.

LINER JOINTS - FUSION WELDING

Fusion welding of the joints between the sheets is recommended. If the joints are not welded they will open and close due to thermal expansion and contraction of the liner material. Fusion welding provides a totally sealed liner and eliminates ingress of material behind the sheet. Material build up between the joints or behind the liner will result in lifting of the liner, thus exposing the liner to premature wear. Material caught between the joints can also cause hang up and interrupted flow, hence defeating the purpose of lining. Joints to be welded are prepared prior to the panels being fastened to the substrate. Welds can be ground, planed or polished flush with liner for fine powder applications.