The wear characteristics of these coatings differ from each other, but are superior to those of conventional austenitic steel, hardened steel, or any other type of steel.
Several variables determine the length of lining wear in each application. Therefore, customers who choose Trimay coverage are advised to do so after considering the following options:
Difficult overlays are suitable for corrosive and high temperature environments and are produced using a unique blend of carbides that form a dense crystalline matrix. The T161 composite plating can handle temperatures up to 650°C or 1202°F and has better wear resistance than Trimay chrome plating. The T161 Composite Jacket is best suited for high wear applications with mild to moderate direct impact.
Due to its high wear resistance and ability to absorb shock, chromium plating is the most widely used in industry. Trimay offers three types of chrome trims: T138, T156 and T157. They are great for running in moderate to heavy wear and can absorb light to moderate impact.
Trimay tungsten linings have the most wear resistant properties of any lining. Their matrix content is above and below 50%. The main difference between the two types is that the 50%+ tungsten coating is only available as a single coat, while the less than 50% tungsten types offer up to three coats. The Trimay tungsten rubber also absorbs shock better than the other two types.
The T171* boron carbide rubber is Trimay’s newest rubber. These products have been developed by Trimay in collaboration with NanoSteel, an advanced materials company. Nano is a submicron boron carbide alloy with wear resistance far superior to tungsten hardfacing at a much lower cost. The Trimay T171* is best suited for heavy to extreme wear applications with moderate direct impact.
The T171* is made from iron-based steel and contains Trimay’s unique, patented sub-micron microstructure chemistry. This pad is suitable for extreme conditions. Trimay has partnered with The NanoSteel Company, Inc., a global leader in nanomaterials production and R&D, to develop the T171* overlay. Trimay has partnered with The NanoSteel Company, Inc., a global leader in nanomaterials production and R&D, to develop the T171* overlay. Trimay has partnered with The NanoSteel Company, Inc., a world leader in the manufacturing and research and development of nanomaterials, to develop the T171* coating. Trimay has partnered with NanoSteel Company, Inc., a world leader in nanomaterials manufacturing and research and development, to develop the T171* coating. It has an excellent glass forming chemistry that provides a high level of supercooling during soldering. This contributes to an extremely fine nanocrystalline microstructure which gives T171* superior hardness compared to conventional carbide solutions.
The T171* overlay has a hardness of 68–71 HRc. In single pass deposition, it provides excellent hardness over the entire length of the deposition from the weld surface, providing complete protection of the deposition. This hardness is maintained even at high temperatures. The photomicrographs below show how maximum hardness is achieved within the overlay interface. In the photomicrographs, the hardness values were measured after a single pass overlay of T171* on a 44W/300W mild steel sheet substrate.
The T171* pad provides excellent resistance to heavy wear when sliding in harsh operating conditions. It can be created up to 1/2 inch coating thickness in two passes if needed for all layers. This provides abrasion resistance up to 0.08-0.10g (±0.03) weight loss in the ASTM G65-04 abrasion test.
T171* overlay has excellent toughness equivalent to 400 Brinell Q&T plate and this is due to in-weld formation of high quantities of refined complex borocarbide phases, surrounded by ductile ferrite phases. T171* overlay has excellent toughness equivalent to 400 Brinell Q&T plate and this is due to in-weld formation of high quantities of refined complex borocarbide phases, surrounded by ductile ferrite phases. Наплавка T171* обладает превосходной ударной вязкостью, эквивалентной пластине Q&T 400 по Бринеллю, благодаря образованию в сварном шве большого количества сложных борокарбидных фаз, окруженных пластичными ферритовыми фазами. The T171* alloy has excellent impact toughness, equivalent to Q&T 400 Brinell plate, due to the formation in the weld of a large number of complex borocarbide phases surrounded by ductile ferrite phases. T171* 堆焊层具有相当于400 Brinell Q&T 板的出色韧性，这是由于在焊缝中形成了大量精炼的复杂硼碳化物相，被韧性铁素体相包围。 The T171* weld layer has the color toughness equivalent to 400 Brinell Q&T plate, which is due to the formation of a large amount of refined complex boron carbide phase in the weld, surrounded by the toughness of iron. Наплавка T171* обладает превосходной ударной вязкостью, эквивалентной пластине Q&T 400 по Бринеллю, благодаря образованию в сварном шве большого количества рафинированной комплексной боркарбидной фазы, окруженной пластичной ферритной фазой. The T171* weld has excellent impact toughness, equivalent to Q&T 400 Brinell plate, due to the formation in the weld of a large amount of refined complex borocarbide phase surrounded by a ductile ferrite phase. The borocarbide phase is fully wetted by the matrix and prevents delamination, premature exfoliation and cracking. The enhanced nature of the borocarbide phase reduces stress concentration points, while the plastic matrix provides good passivation and crack bridging, resulting in better impact resistance.
T171* wear plates are available as wear plate solutions for low alloy and carbon steel substrates, and T171* wear plates use Trimay’s proprietary submerged arc welding process. The overlays can be cut and made in different thicknesses, just like chromium carbide overlays. Forming or rolling is carried out on a bending machine, and cutting is carried out by plasma-arc or water jet methods, but not by flame cutting. The thickness and location of the weld (either on the inside or outside diameter) determines the formability of the overlay. For low precision operations, carbon arc gouging can be used to remove T171* coating material. The T171* overlay is not machined and can be EDM or ground on request. Fillet welding or riveting is a common method of installing T171* wear plates, which can be fabricated or bolted for installation. Welds to wear plates should be covered with Trimay T171* special wire to ensure even wear.
Trimay designs and manufactures the highest quality wear linings for customers seeking to maximize efficiency by extending the life of equipment, parts and piping subjected to heavy wear. Trimay achieves its high quality standards through research and development, partner companies and exclusive suppliers, as well as through its own experimentation and process optimization.
This information has been obtained, verified and adapted from materials provided by Trimay Wear Plate Ltd.
Trimay wear plate. (August 22, 2018). Coating material for wear resistant applications. AZOM. Retrieved August 18, 2022 from https://www.azom.com/article.aspx?ArticleID=5634.
Trimay wear plate. “Cover materials for wear-resistant applications”. AZOM. August 18, 2022 . August 18, 2022 .
Trimay wear plate. “Cover materials for wear-resistant applications”. AZOM. https://www.azom.com/article.aspx?ArticleID=5634. (As of August 18, 2022).
Trimay wear plate. 2018. Coating materials for wear-resistant applications. AZoM, accessed 18 August 2022, https://www.azom.com/article.aspx?ArticleID=5634.
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Post time: Aug-18-2022