MES Provides Precision Engineering for Terex Canica Model 2000

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MES meets customer needs in challenging iron casting project

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Terex Canica 2000 is a crushing impeller which is used to crush items into smaller sizes. Rocks, concrete chunks and other hard items enter Canica via the feed tube. This application needed very specific engineering specifications:

a] Iron casting with precise Cr control which contributes to the feed tube's high abrasion resistance and durability for this type of application. In fact, the main reason the customer sourced this part from MES is because the previous supplier could not control Cr within 2%.

b] Hardness of 53HRC + 10 HRC in a cast condition is also difficult to achieve without causing cracks. The process must have a good and controlled cooling cycle to achieve the required hardness.

c] Paint – The application required coating which had to be imported from the US into China for prototypes so that it would be available for production. MES utilized its network of trading and supply chain capabilities to ensure proper paint was available for production. PPAP and Pilot parts were submitted with equivalent paint application.

The Terex Canica Model 2000 was not an easy project and MES likewise faced many production challenges. The first batch produced did not meet the 2% requirement of Cr. The hole pattern on the 22” PCD on the initial production was also under-sized; Material shrinkage had to be adjusted as well. After repeated tests and analysis, and with close cooperation between the MES process and quality engineers and suppliers, MES was able to produce the accurate parts. The customer was able to put this in operation directly after the final coating of paint.

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Marjorie Clayman
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