Thermal rotational molding technique and device for inner wall and outer wall of metal pipe

A technology of metal pipes, inner and outer walls, applied in the direction of pretreatment surface, coating, device for coating liquid on the surface, etc., can solve the problems of low production efficiency, difficult to guarantee the quality of rotomolding, high labor intensity, etc., to achieve product quality The effect of easy, high production efficiency and low labor intensity of workers

Inactive Publication Date: 2007-08-08
罗全喜
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used thermal rotomolding process and equipment have a single process flow and cannot realize flow operation. The inner and outer wall rotomolding equipment are relatively independent, the equipment is simple, and the quality of rotomolding is difficult to guarantee.
During the rotomolding process of the inner and outer walls, the transfer of the workpiece is carried by manual hands, which is labor-intensive, safe production cannot be guaranteed, production efficiency is low, and the surface that has been rotomolded is easily damaged.

Method used

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  • Thermal rotational molding technique and device for inner wall and outer wall of metal pipe
  • Thermal rotational molding technique and device for inner wall and outer wall of metal pipe
  • Thermal rotational molding technique and device for inner wall and outer wall of metal pipe

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Embodiment Construction

[0038] As shown in Figure 13, the internal and external rotomolding process of the metal pipe of the present invention is divided into two processes: the inner wall rotomolding process and the inner and outer plastic rotomolding process, and the inner wall rotomolding process is as follows:

[0039]

[0040]

[0041] The outer wall thermal flow plastic process is as follows:

[0042]

[0043]

[0044] Before the metal pipe enters the assembly line, the processed pipe fittings are derusted first. The pre-rotomolding inspection platform 1 shown in FIG. 1 is composed of a rectangular table top 1-1 and legs 1-2. The height of the upper end of the table is equal to the upper end surface of the high end of the guide rail 2-2 in FIG. 3 . After passing the inspection, the pipe fittings are pushed onto the guide rail 2-2, and the guide rail 2-2 with an inclination of 8 is installed on the bottom plate of the heating furnace 2, and the pipe fittings will automatically roll i...

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Abstract

The invention relates to the process and equipment for rolling molding for inside and outside metal tubes. It uses the self equipped guide and running vehicles for the previous inspection before the heat molding of the metal tube, electrical heating oven, inner wall heat rolling molding using rotational working bench without natural cooling and then for final production inspection. Rotational working bend needs to send the outer wall molded metal tube to the outer wall heat rolling molding machine, then constant temperature constant plasticizing, natural cooling and final product inspection. It enjoys high production efficiency, good product quality control, with standardized production.

Description

technical field [0001] The invention relates to an anticorrosion process and equipment for metal pipes, in particular to the anticorrosion process and equipment for inner and outer walls of metal pipes by thermal rolling molding. Background technique [0002] Metal pipeline anticorrosion treatment occupies a very important position in pipeline construction, and it is also an important link to ensure the safety of pipelines and improve their service life. In recent years, the anti-corrosion process of thermal rotomolding on the surface of metal pipes has been widely used in many fields such as petroleum, chemical industry, and power plants. However, the currently used thermal rotomolding process and equipment have a single process flow and cannot realize flow operation. The inner and outer wall rotomolding equipment are relatively independent, the equipment is simple, and the quality of rotomolding is difficult to guarantee. During the rotomolding process of the inner and ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C3/00B05C13/02B05D7/24B05D3/00
Inventor 罗全喜刘圣鼎
Owner 罗全喜
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