After we know the rubber lined process, in the first step of involved rubber lined process is Substrate Inspection. Substrate Inspection is inspecting
on substrate which will be rubber lined to detect:
- Rusting,
mill scale, and rubber lining occurred
- Chemical
contaminant
- Substrate profile must be filled on
requirement of substrate surface condition as in ISO 8501
Here the work instruction of
Substrate Inspection:
1. Before rubber lining process
started, check the welding quality and measure as the picture. The construction must be reachable in
order to apply rubber lining process
2. Give special caution on the
weld area and check the porosity, crack, spatter, or sharp side of material
will be rubber lined.
3. If we find the defect just
tell the customer of it.
4. Grinding the unflatten area of
welding in order to avoid the gas trapped.
Cleanliness of substrate divided into four levels, which SA code namely:
SA 1 Light Blast Cleaning or
Brush-off
SA 2 Thorough Blast Cleaning or
Commercial
SA 2 1/2 Very Thorough Blast
Cleaning or Near White Metal
After we do Substrate Inspection for the next action is surface preparation, just see and wait on the next article.
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