A kind of equipment and method of multi-nozzle injection composite roll

Abstract

A device and method for multi-nozzle spraying compound rolls, the device includes a tundish, the tundish is provided with a stirring device; a plurality of nozzles are arranged under the tundish, and the nozzles and the tundish are connected by a guide The liquid pipe is connected; the frame is arranged under the nozzle, and the frame is provided with a lifting mechanism for driving the blank to move up and down and a rotating mechanism for driving the blank to swing or rotate; a frictional heating device is arranged toward the blank, and Can be selectively moved close to or away from the blank. The invention also includes a method for multi-nozzle injection composite rolls. The invention can rapidly increase the composite speed of the composite layer, form uniform metallurgical bonding, and the bonding force between the blank and the composite layer is large and stable.

Description

technical field [0001] The invention relates to the technical field of roll spray forming, in particular to a multi-nozzle jet composite roll equipment and method. Background technique [0002] Spray forming is a process in which the alloy liquid flow is atomized into fine droplets with high-pressure inert gas, flies and cooled under high-speed airflow, and is deposited into a blank before it is completely solidified. It is a new process technology that integrates metal melting, liquid metal atomization, rapid solidification, and spray deposition forming into a metallurgical operation process to make metal material products. It is useful for developing new materials, reforming traditional processes, improving material performance, and saving energy , reducing environmental pollution have a major role. [0003] CN 103962558B discloses a method for continuously preparing composite tube blanks by spray forming, which specifically includes: setting the atomizing nozzle in a spa...

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Problems solved by technology

[0004] However, the above scheme has the following disadvantages: (1) High-frequency induction coil is used for heating during the spraying process. Since the atomizing nozzle sprays high-temperature molten metal, it is easy to spray into the high-frequency induction coil, making it different from the high-frequency induction coil. Other components connected to the induction coil cannot withstand high temperatures, resulting in a greatly reduced service life or even damage on the spot; (2) The injection pressure of the existing atomizing nozzle is low, and the rapid compounding of the blank and the metal cannot be achieved, so the above patent documents need to be sprayed while spraying. Heated by a high-frequency induction coil, otherwise the stress on the entire blank will be large and the heating will be uneven; (3) There is no stirring device in the tundish, which will make the molten metal in the tundish uneven. When it is sprayed on the blank , will form a rough, uneven, segregated structure; (4) The above-mentioned composite object is a tube blank, which belongs to a hollow structure, and the above method cannot be applied to a large solid roll structure

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