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Method and apparatus for flame coating tubular elements with thermoplastic powders

A tubular element, thermoplastic technology, applied in the direction of surface coating liquid device, coating, metal material coating process, etc., can solve the problems of ineffective use and limited device performance

Active Publication Date: 2021-03-26
IBIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the devices currently used to manufacture such finishes have certain disadvantages which limit the performance of the devices and thus make the use of the above methods less effective

Method used

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  • Method and apparatus for flame coating tubular elements with thermoplastic powders
  • Method and apparatus for flame coating tubular elements with thermoplastic powders
  • Method and apparatus for flame coating tubular elements with thermoplastic powders

Examples

Experimental program
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Embodiment Construction

[0040] With particular reference to these figures, reference numeral 1 generally designates a device for flame coating tubular elements 2 with thermoplastic powder, in particular reference numeral 1 generally designates a device for flame coating joints or similar products with thermoplastic powder. The device 1 is inserted inside a plant for processing the above-mentioned products, in which other devices for the production of finished products may be located.

[0041] In fact, the apparatus 1 is preferably used to form a third coating layer on a tubular element, which can be subjected to pre-blasting, preferably at the same factory or at another location, in order to Prepare the surface to be treated, i.e. preheat the surface to be at a suitable temperature, preferably in the range of 220°C to 240°C, to be bonded by fusion, possibly with polyethylene or polypropylene powder Epoxy FBE to apply the first coat, or a liquid epoxy primer at a suitable preheat temperature as an alt...

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PUM

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Abstract

The method for flame coating tubular elements provides for arranging a said tubular element (2) to be coated at a coating station, providing an applicator unit (3), operating in the coating station, in an inactive configuration, spaced from the tubular element (2), the applicator unit (3) carrying at least one thermoplastic powders flame applicator device (4) and being alternatively operable between the inactive configuration and an active configuration, approached radially to the tubular element (2). After having brought the applicator unit (3) towards the tubular element (2), the method provides for operating the same unit (3) in the active configuration, so as to peripherally engage the element (2) itself. The applicator device (4) is turned on, the thermoplastic powders are fed and theapplicator device (4) is operated in motion around and / or along the tubular element (2) so as to flame coating it with a controlled flow of thermoplastic powders.

Description

technical field [0001] The present invention relates to a method and an apparatus for flame coating tubular elements, in particular joints and curved tubular elements, with thermoplastic powders. Background technique [0002] The flame spraying of thermoplastic powders by means of the fusion method has long been known. For example, this technique is used to form anti-corrosion coatings on processed articles of different nature. [0003] According to known methods, the thermoplastic powder is sprayed onto the product to be coated by means of an applicator spray gun supplied with compressed air and suitable liquefied petroleum gas. The gas flame generated by the applicator gun transports the molten powder particles onto the product to be coated. [0004] The application of the coating method by means of flame spraying is fast and economical and is suitable for coating different materials. However, the devices currently used to produce such finishes have certain drawbacks wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/02B05B7/20C23C4/06C23C4/18C23C4/129B05D1/08B05D1/10B05D3/08
CPCB05B7/205B05B7/206B05D1/10B05D3/08C23C4/02C23C4/06C23C4/129C23C4/18B05D7/146B05D2254/02B05B13/0436B05B13/041B05B13/0431B05B13/0442
Inventor 苏珊娜·焦万尼尼
Owner IBIX