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Stepping type epoxy powder electrostatic spraying production line for nodular cast iron pipes

An electrostatic spraying, ductile iron technology, applied in electrostatic spraying devices, liquid spraying equipment, coatings, etc., can solve the problems of unstable quality, uncontinuous production, low efficiency, etc., to improve safety factor and service life, improve pipe fittings Productivity, the effect of reducing safety risks

Inactive Publication Date: 2019-12-03
LIAONING EVER FOUNDRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for ductile iron pipe fittings with specifications of DN600-DN1200, due to the large size and heavy weight of the pipe fittings, this production line cannot meet the production requirements.
At present, box-type furnaces are widely used to heat pipe fittings, and the method of spraying outside the furnace leads to uncontinuous production, low efficiency, high energy consumption, and unstable quality.

Method used

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  • Stepping type epoxy powder electrostatic spraying production line for nodular cast iron pipes
  • Stepping type epoxy powder electrostatic spraying production line for nodular cast iron pipes
  • Stepping type epoxy powder electrostatic spraying production line for nodular cast iron pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The process of spraying DN800, 1-meter-long double-disk flange pipes with a spraying line, and spraying Aksu-blue epoxy powder is as follows:

[0054] (1) Ready to spray

[0055] A. The DN800, 1-meter-long double-disk flange pipe is sandblasted in advance, and some parts need to be repaired;

[0056] B. Select the color and brand of solid-solution-free powder required by the customer, and add it to the electrostatic spraying equipment 2 to prepare for spraying;

[0057] C. Set the temperature of the pre-baking oven 7 and the powder curing oven 13, and set the parameters of the electrostatic spraying equipment;

[0058] D. Do a good job of covering and protecting relevant parts according to the requirements of the workpiece;

[0059] E. Classify according to the specifications of the sprayed pipe fittings and the color of the sprayed powder, and then stack them in the loading area for epoxy spraying;

[0060] (2) Epoxy spraying

[0061] Hang the pipe fittings to be s...

Embodiment 2

[0069] Use the spraying line to spray the full-scale tee fittings of DN700×DN400, and the process of spraying Jiaming-black epoxy powder is as follows:

[0070] (1) Ready to spray

[0071] A. Pre-sandblast all DN700×DN400 tee fittings, and partially repair them;

[0072] B. Select the color and brand of solid-solution-free powder required by the customer, and add it to the electrostatic spraying equipment 2 to prepare for spraying;

[0073] C. Set the temperature of the pre-baking oven 7 and the powder curing oven 13, and set the parameters of the electrostatic spraying equipment;

[0074] D. Do a good job of covering and protecting relevant parts according to the requirements of the workpiece;

[0075] E. Classify according to the specifications of the sprayed pipe fittings and the color of the sprayed powder, and then stack them in the loading area for epoxy spraying;

[0076] (2) Epoxy spraying

[0077] Hang the pipe fittings to be sprayed in the loading area on the hangi...

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Abstract

The invention discloses a stepping type epoxy powder electrostatic spraying production line for nodular cast iron pipes. A driving system is connected with a transmission catenary system; the transmission catenary system is connected with the tensioning mechanism; the tensioning mechanism is connected with a tensioning balance weight; the transmission catenary system is connected with the pre-drying furnace; the pre-drying oven is connected with a pre-drying oven control electric cabinet, the pre-drying oven control electric cabinet is connected with a catenary control electric cabinet, the transmission catenary system is connected with a powder spraying chamber, the powder spraying chamber is connected with a dust remover, a powder recoverer is connected with the dust remover, the transmission catenary system is connected with a powder curing oven, and the powder curing oven is connected with the powder curing oven control electric cabinet. According to the invention, a traditional straight-through epoxy powder spraying and curing method is replaced by the optimized beat-type operation mode epoxy powder spraying; the overall quality of the nodular cast iron pipes is comprehensively improved, standardization and rationalization of product production are achieved, the pipeline water conveying safety coefficient is increased, and the pipeline service life is prolonged.

Description

technical field [0001] The invention relates to a step-by-step epoxy powder electrostatic spraying production line for ductile iron pipe fittings in the technical field of epoxy powder electrostatic spraying production line, especially suitable for epoxy powder electrostatic spraying construction of DN600-DN1200 medium-sized ductile iron pipe fittings. Background technique [0002] At present, with the improvement of people's living standards, more and more cities have put forward the requirement of pipelines for direct drinking tap water. However, the cement mortar lining used in traditional ductile iron pipelines cannot meet this requirement due to the alkali content, so according to Epoxy-lined pipe fittings produced in accordance with EN 14901 "Requirements and Test Methods for Epoxy Coating (Heavy Anti-corrosion) of Ductile Iron Pipe Fittings" are more and more widely used. For ductile iron pipe fittings with specifications below DN300, the continuous light suspension c...

Claims

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Application Information

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IPC IPC(8): B05B5/08B05B13/02B05B16/20B05D1/06
CPCB05B5/081B05B5/082B05B13/0264B05B16/20B05D1/06
Inventor 周占虎王晨宇官振兴
Owner LIAONING EVER FOUNDRY CO LTD
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