- The TREXONN – Liners has been chemically treated on one side & is ready for adhering to the correctly prepared metallic surface.
- Preparation of Metallic Surface
A] The metal surface can be prepared with normal machining methods like Grinding, Milling, Shaping, Planning, Scraping, & Polishing & having ultimate surface roughness between Ra= 1.6 to 6 ?m.
B] Any depressions, dents, pores on metal surface should be covered, filled with epoxy based adhesives & polished.
C] The metallic surface as well as liner surface should be cleaned by only following cleaning agents.
1. Trichloroethylene.
2. Per Chloroethylene.
3. Acetone.
Caution: Petrol, Diesel, Kerosene should not be used as cleaning agent.
- Gluing
A] Adhesive– ARALDITE.
B] The Araldite should be applied to both metallic surface & pretreated – black side of TREXONN liner uniformly. The due care should be taken while spreading the Araldite on metallic surface in longitudinal direction (Perpendicular to sliding direction) While on TREXONN liner in Transverse direction (Parallel to sliding direction).
C] Adhesive Quantity: 0.200 kg per sq. m.
- Fitment: The metallic surface & TREXONN liner may be exposed to air for two minutes for accelerating the curing & subsequently the TREXONN liner may be kept on metallic surface from one end & then slowly up to other end.
- Curing: during curing the constant clamping pressure of 200 gm /cm2 may apply for 48 hours.
.
- Finishing: After curing TREXONN liner can be finished by conventional finishing mediums like Grindstone & Polish papers.
| Grindstone |
Grinding Medium: |
SIC
|
| |
Grain size: |
46 |
| Roughness: |
G |
| Structure: |
16 |
| Binder: |
Ke |
| Polish Papers |
Medium: |
Electro-coated SIC |
| |
Grain size: |
240 |
| Roughness: |
P |
- Caution: The Best performance of TREXONN systems is dependent on bonding strength between metallic surface & liner. Hence any daviation w.r.t. under noted matters shall result in poor bonding & leading to premature failure of total system.
A]Surface roughness of metallic surface.
B]Cleaning Agents.
C]Method of Application of glue.
D]Exposure of treated surface of liner to light should be strictly avoided.
E]Cleaning Agents – not to be applied to treated surface of Liner.
