Grinding-assisted laser cladding powder feeder

Abstract

The invention provides a grinding-assisted laser cladding powder feeder. The powder feeder comprises a box, a powder feeding pipe, an upper rotary disc and a lower grinding disc. The box is provided with an upper opening, a middle section and a lower opening. The powder feeding pipe is arranged inside the upper opening and the upper portion of the middle section. The upper rotary disc and the lower grinding disc are arranged in the middle section, and the lower grinding disc is fixedly connected with the inner wall of the middle section. The upper rotary disc acts on the lower grinding disc. Aplurality of through holes are formed in each of the upper rotary disc and the lower grinding disc. The powder feeder has the advantages that firstly, by grinding composite powder, the problems thatthe composite powder is not uniformly mixed and cakes are solved; secondly, an induction heating coil is additionally arranged, the dryness of the mixed powder is improved, and the problem of powder caking can be solved easily; and thirdly, an oscillator is additionally arranged, the ground mixed powder is subjected to oscillation mixing and screening again, and meanwhile, the ground powder is more uniform when being discharged.

Description

Technical field [0001] The invention relates to a laser cladding technology, in particular to a grinding auxiliary laser cladding powder feeder. Background technique [0002] Laser cladding is a new surface modification technology that cladding materials on the surface of the substrate to achieve the purpose of improving the performance of the substrate. [0003] At present, there are many kinds of cladding layer materials for laser cladding, such as ceramic powder, various nickel-based alloys and iron-based alloys, but a single type of powder is often difficult to meet the cladding requirements. For example, the cladding material WC can increase the hardness and wear resistance of the matrix due to its characteristics, but its nature is brittle, and it is often necessary to add reinforcement items for assistance. [0004] The disadvantage of the prior art is that before the composite powder is cladding, a lot of work needs to be done on the mixing uniformity and powder agglomeratio...

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Problems solved by technology

[0004] The disadvantage of the existing technology is that before the cladding of the composite powder, a lot of work needs to be done on the mixing uniformity of the composite powder and the problem of powder agglomeration, which leads to a long time-consuming in the early stage of cladding, a long cladding cycle and low efficiency

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