Scenario: a buyer wants a lab test that predicts how a carbide blade will perform on the road. Direct answer: the Clear Roads Project 07-01, completed in September 2010, aimed to develop test procedures to give agencies a better ability to predict the performance of carbide inserts. Its project page says inserts that showed flaws in the lab also had the poorest field performance. It is a dated project; I summarise only what the page states.
What the project page states
The page states a problem, an objective and a result; keep them separate when you quote it.
- Problem: state DOTs use several thousand carbide blades in a winter, and inserts are often replaced too early or too late, which wastes material and money and can damage plows.
- Objective: to develop testing procedures for carbide inserts so agencies can better predict performance.
- Results: the project identified lab tests that showed inserts with flaws in the lab also had the poorest field performance. The report recommended developing a national standard, so that manufacturers can focus on one type of carbide blade and shape, and included a purchasing approval framework and specification.
- Details: investigator Braun Intertec Corporation; end date September 2010; a report brief and final report are listed.
What it does and does not tell you
| It suggests | It does not tell you |
|---|---|
| Lab flaws and poor field results were linked in that project | That a lab pass means good field life |
| Standard procedures were considered useful for purchasing | Which test numbers to demand today |
| A national standard was recommended | The current state of any standard |
How a buyer can use it
The report is a method, not a product ranking, so use it to write requirements.
- Read the final report if you plan to specify tests. A summary usually omits the conditions that decide the result.
- Ask suppliers which tests they run and how they inspect inserts. The inspection step is where flaws are actually caught.
- Combine lab checks with a field trial on your own roads. The lab describes the insert; the road describes the system.
- Check for newer work before relying on a 2010 project. Specifications have moved since.
Points to remember
The page describes a 2010 project and gives a short statement of results. It is a good prompt for questions to suppliers, but it is not a purchase specification by itself. Treat the final report as the document to rely on, and treat any summary, including this one, as a pointer to it.
Boundary: Only the project page was reviewed, not the final report; the project is from 2010 and no test method or acceptance number is given here.
Sources and further reading. External references are dated; where a figure is quoted, the link shows where it came from.
Clear Roads: Development of Standardized Test Procedures for Carbide Insert Snowplow Blade Wear (Project 07-01) (completed September 2010) ↗Carbide Insert Troubleshooting: Chipping, Pull-Out and Cracking ↗Reading Carbide Insert Wear Patterns Before They Become Failures ↗Tungsten carbide inserts for snow plow edges ↗Is AR400 Plate a Good Cutting Edge? Hardness, Toughness and Welding Limits ↗Commissioning a Third-Party Test: Scope, Samples, Standards, Turnaround ↗Cobalt Content in Carbide Inserts: Why Binder Percentage Is Only One Variable ↗
