A processing technology of steel-sheathed steel heat-insulating steam steel pipe

Abstract

The invention discloses a machining technology of a steel-wrapped-steel heat preservation steam steel pipe, and relates to the technical field of heat preservation steel pipes. The machining technology comprises the first step of inner steel pipe and outer steel pipe machining, the second step of foam aluminum-magnesium foaming forming and the third step of foam aluminum-magnesium filling. According to the machining technology, an aluminum ingot serves a main material, a magnesium ingot serves as an auxiliary material, foam aluminum-magnesium is prepared with assistance of ceramic micro powder, glass fiber powder, nano zinc oxide, nano barium carbonate, a foaming agent and lanthanum oxide, and the steel-wrapped-steel heat preservation steam steel pipe is prepared through the prepared foamaluminum-magnesium filling. The foam aluminum-magnesium serves as filler for endowing the steam steel pipe with excellent heat preservation performance, the foam magnesium-aluminum is light, the heatconduction coefficient is small, and recycling can be achieved.

Description

Technical field: [0001] The invention relates to the technical field of heat-insulating steel pipes, in particular to a processing technology for steel-sheathed steel heat-insulating steam steel pipes. Background technique: [0002] The steam heating system is a system that supplies heat in the form of steam. Water is used as the heating medium to carry heat from the heat source in the form of steam and send it to the user through the heating pipeline. In recent years, in the chemical, petroleum, textile and other fields, most production equipment uses steam as the heating medium. At present, many small enterprises do not have their own steam heating equipment, and need to purchase steam from specialized steam heating enterprises, and transport it to each production station through heating pipelines. [0003] In order to reduce the heat loss during steam transportation, it is necessary to insulate the steam pipeline. At present, the commonly used thermal insulation treatme...

AI Technical Summary

Problems solved by technology

However, the processing technology of foamed aluminum creates certain obstacles to this technical idea, because foamed aluminum needs to add a foaming agent to the molten aluminum liquid to form cell knots during processing, and the currently used foaming agent has a cell structure The problem of unevenness, and the high-temperature processing technology of foamed aluminum makes it difficult to directly form an insulation layer on the surface of the steel pipe

In addition, the impact resistance of foamed aluminum is weak, and it is easy to deform if it is directly used as the outer insulation layer of steel pipes; and the foamed aluminum has a cellular structure, which is easy to absorb soil when laying underground, which is not conducive to the maintenance of pipelines