METHOD OF PRODUCING COPPER-NICKEL COATING ON SURFACES OF TITANIUM PLATE Russian patent published in 2019 - IPC B23K20/08 

FIELD: technological processes.

SUBSTANCE: invention relates to production of wear-resistant coatings on titanium with the help of energy of explosives and using laser radiation, in particular, in production of materials for friction pairs, braking devices, etc. A symmetrical three-layer stack of alternating plates of copper-nickel alloy and titanium with preset ratio of thicknesses of layers is made at thickness of each clad layer of copper-nickel alloy of 0.8–1.2 mm. Welding is performed by blasting the stack and hot rolling of welded three-layer stack with reduction that provides thickness of each layer of copper-nickel alloy equal to 0.1–0.3 mm. On the side of one of the layers from copper-nickel alloy, thermal action is carried out with scanning laser beam with emission power of 1.3–1.4 kW with melting of metal layers. Speed of its displacement and diameter are selected from the condition of obtaining penetration of titanium layer at depth equal to 1–1.2 of thickness of layer from copper-nickel alloy.

EFFECT: obtaining on one side of titanium plate a high-hard wear-resistant coating with high hardness and wear resistance, and on its other side – copper-nickel alloy coating, which protects its surface from occurrence of microcracks in it in operation under high temperatures (up to 600 °C), which allows to connect obtained products with soldering to other metal products.

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