Optimizing Composition, Fabrication, and Inspection of Chromium Carbide Overlay (CCO) for Oil Sands Sliding and Impact Wear Applications
Bibliographic record
Abstract
Abstract Chromium Carbide Overlay (CCO) has long been used in Canadian oil sands mining industry to protect process equipment and piping from severe abrasion, erosion, and erosion/corrosion. However, CCO with poor quality has led to many premature failures in the field service, and resulted in high production loss and maintenance cost for oil sands operators. Most of the failures were due to the spallation of CCO under sliding/impact wear. Extensive lab tests and assessments in conjunction with technical studies/literature reviews were applied toward common commercial CCO products to further understand the effects of overlay composition and welding parameters on underbead cracking, mechanical properties, and wear/abrasion resistance. The study revealed that the extent of underbead cracking is related to the welding heat input, consequently affecting the spallation resistance of CCO. Outcomes of this research include a proposed guideline on how to improve CCO performance under sliding and impact wear by optimizing composition, fabrication, and non-destructive examination (NDE) techniques, including development of an NDE procedure with respect to underbead cracking.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".