Manufacturing method plastic lining composite steel pipe and its manufacturing equipment

A composite steel pipe and plastic-lined technology is applied in the field of manufacturing plastic-lined composite steel pipes to achieve the effect of high production efficiency and easy production automation.

Inactive Publication Date: 2003-12-03
SHANGHAI WEIBANG PIPELINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method and device for manufacturing plastic-lined composite steel pipes using a continuous moving induction heating method to overcome the defects of the existing box-type furnace fixed heating method for manufacturing plastic-lined composite steel pipes

Method used

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  • Manufacturing method plastic lining composite steel pipe and its manufacturing equipment
  • Manufacturing method plastic lining composite steel pipe and its manufacturing equipment
  • Manufacturing method plastic lining composite steel pipe and its manufacturing equipment

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Embodiment Construction

[0010] Such as figure 1 As shown: the device for manufacturing plastic-lined composite steel pipe of the present invention includes: a frequency conversion feeding device 1, an induction heater 2 and an intermediate frequency power supply device 3 connected with the induction heater 2 through a circuit. The frequency conversion feeding device 1 includes a frequency conversion motor 11 and a roller conveying line 12 controlled by the frequency conversion motor 11 . The roller conveying line 12 is divided into two sections, located at the front and back of the induction heater 2 respectively.

[0011] When compounding, the assembled steel pipes 4 are continuously placed on the roller conveying line 12 successively, and come out through the induction heater 2, and the compounding is completed. process.

[0012] combine figure 2 Shown: the production step 100 of manufacturing plastic-lined composite steel pipe of the present invention comprises:

[0013] Step 101, coating the...

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Abstract

A technology for manufacturing plastic-lined composite steel pipe includes such steps as coating adhesive on the external surface of a plastic pipe, putting the plastic pipe in a steel pipe, sealing both ends of steel pipe by two blank covers, injecting compressed air into the plastic pipe, moving the steel pipe through an induction heater, and cooling for formation. Its advantages are high productivity and no damage to the coated zinc layer of steel pipe.

Description

technical field [0001] The invention relates to a method and a device for manufacturing a plastic-lined composite steel pipe, in particular to a method and a device for manufacturing a plastic-lined composite steel pipe by induction heating. Background technique [0002] The steel pipe lined with plastic pipe is an alternative to galvanized steel pipe. It is made of hard polyvinyl chloride (PVC-U), chlorinated polyvinyl chloride (CPVC) and other plastic pipes lined with traditional hot-dip galvanized pipes. , used in conjunction with plastic-lined malleable iron pipe fittings, so the product has sufficient strength and has the function of preventing secondary pollution. It is an ideal environmental protection pipe in the world today. Plastic-lined steel pipes began to be developed and produced abroad in the 1970s. Compared with the inner coating technology of pipes, the plastic-lined technology has the following advantages: 1. The plastic-lined steel covers the metal complet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C63/20B29C63/26
Inventor 顾树良
Owner SHANGHAI WEIBANG PIPELINE
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