Galvanized composite steel pipe manufacturing process

A manufacturing process and technology for composite steel pipes, applied in the field of steel pipe manufacturing processes, can solve the problems of high manufacturing cost, complex manufacturing process, unfavorable popularization and application, etc., and achieve the effects of long service life, simple manufacturing process and low production cost

Inactive Publication Date: 2017-06-09
广汉市川西机电备件有限责任公司
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AI-Extracted Technical Summary

Problems solved by technology

The current galvanized composite steel pipe manufacturing process is relatively complicated, and ...
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Abstract

The invention discloses a manufacturing process of a galvanized composite steel pipe. The manufacturing process of the galvanized composite steel pipe comprises the following steps: A. coating a hot-melt adhesive on the outer surface of the stainless steel pipe; B. embedding the stainless steel pipe into the galvanized pipe and Seal both ends; C. Pass pressure saturated steam into the stainless steel pipe and heat the outer surface of the galvanized pipe. The invention discloses a manufacturing process for galvanized composite steel pipes. After feeding pressure-saturated steam into the stainless steel pipes and heating the outer surface of the galvanized pipes, the stainless steel pipes can be quickly bonded through the hot-melt adhesive between the stainless steel pipes and the galvanized pipes. The bonding with the galvanized pipe is firm, making the manufacturing process simple, the production cost low and the service life long.

Application Domain

Layered product treatmentLamination +2

Technology Topic

Hot-melt adhesiveGalvanization +1

Examples

  • Experimental program(3)

Example Embodiment

[0013] Example 1: A manufacturing process for galvanized composite steel pipes of the present invention includes the following steps: A. Firstly, the outer surface of the stainless steel pipe is cleaned, and then the outer surface of the stainless steel pipe is coated with a hot melt adhesive, wherein the hot melt adhesive The coating thickness is 0.1 mm; B. Embed the stainless steel pipe into the galvanized pipe and seal both ends; C. Pass pressure saturated steam into the stainless steel pipe and heat the outer surface of the galvanized pipe, where the saturated steam pressure is 4MPa, the heating temperature of the outer surface of the galvanized pipe is 120 degrees Celsius.

Example Embodiment

[0014] Embodiment 2: The manufacturing process of galvanized composite steel pipe of the present invention includes the following steps: A. Firstly, the outer surface of the stainless steel pipe is cleaned, and then the outer surface of the stainless steel pipe is coated with a hot melt adhesive, wherein the hot melt adhesive The coating thickness is 0.3 mm; B. Insert the stainless steel pipe into the galvanized pipe and seal both ends; C. Inject saturated steam into the stainless steel pipe and heat the outer surface of the galvanized pipe, where the saturated steam pressure is 6MPa, the heating temperature of the outer surface of the galvanized pipe is 160 degrees Celsius.

Example Embodiment

[0015] Example 3: The manufacturing process of galvanized composite steel pipe of the present invention includes the following steps: A. Firstly, the outer surface of the stainless steel pipe is cleaned, and then the outer surface of the stainless steel pipe is coated with a hot melt adhesive, wherein the hot melt adhesive The coating thickness is 0.2 mm; B. Insert the stainless steel pipe into the galvanized pipe and seal both ends; C. Inject saturated pressure steam into the stainless steel pipe and heat the outer surface of the galvanized pipe, where the saturated steam pressure is 5MPa, the heating temperature of the outer surface of the galvanized pipe is 140 degrees Celsius.

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Description & Claims & Application Information

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