Wear-resistance medicine core composition, wear-resistance welding wire and preparation method and application thereof
A composition and drug core technology, applied in the field of wear-resistant materials, can solve the problems of low production efficiency, long cycle, and inability to adapt, and achieve the effects of preventing oxidation, reducing welding thermal stress, and matching linear expansion coefficients
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Embodiment 1
[0072] The preparation of embodiment 1 wear-resistant welding wire
[0073] 1 # Wear-resistant wire
[0074] The wear-resistant drug core composition includes components: 1.5wt.% of surface-activated diamond particles, 5wt.% of niobium oxide, 5wt.% of molybdenum oxide, and the balance of nickel-based alloy powder.
[0075] Sheath: Pure Nickel.
[0076] Surface activation method of diamond particles:
[0077] (1) Alkali treatment of diamond particles:
[0078] The alkali solution is 5g / L, 90°C sodium hydroxide solution, and the diamond particles are placed in the alkali solution for ultrasonic treatment; the ultrasonic conditions are: 30kHz ultrasonic vibration for 25min;
[0079] Wash with deionized water until the pH is neutral, and dry at 70°C;
[0080] (2) Acid treatment of diamond particles:
[0081] The acid solution is a nitric acid solution with a mass fraction of 20%, the diamond particles obtained in step (1) are placed in the acid solution and boiled for 20 m...
experiment example 1
[0100] Experimental Example 1 Surface Morphology and Brazing Coating Application of Wear-resistant Welding Wire
[0101] Characterize the surface morphology of brazing coating with PhenomXL type scanning electron microscope (SEM), the result is as follows figure 2 as shown, figure 2 Among them, the surface of the coating obtained by brazing is uniform and free of cracks, and the diamond particles are embedded in the cladding metal. The wettability of the cladding metal to the diamond particles is good without cracking.
[0102] With the 1 prepared in embodiment 1 # ~5 # Wear-resistant welding wire, used for surfacing welding on the surface of 10mm thick Q235 steel plate, the protective atmosphere of surfacing welding is argon, the dew point is -55 ℃, the welding process parameters are as follows: welding polarity is DC reverse connection, welding current is 300A ~ 480A, The welding voltage is 23V ~ 35V, and the welding overlap is 50%.
[0103] With embodiment 1 in 1 # ~...
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