Process for producing rising pipe in heat exchanging reforming furnace

Abstract

The invention relates to a process producing a rising pipe in a heat exchanging reforming furnace, comprising the following steps of smelting in an intermediate-frequency furnace, casting centrifugally, punching holes, extruding with cross rolls, extruding with a sizing machine, cooling with a cooling bed, accurately machining and obtaining the finished product. Compared with the complex process and equipment for rolling the rising pipe, the process and the equipment for centrifugally casting the rising pipe is simple and can save the cost and improve the benefit.

Description

Technical field: [0001] The invention relates to a manufacturing process of an ascending tube in a heat-exchanging reformer, belonging to the field of smelting and manufacturing. Background technique: [0002] The riser in the heat exchange reformer is used to output the primary reforming gas to the secondary reformer furnace, and its working conditions are high temperature, pressure, and strong corrosion, so the material requirements are relatively strict. Roll-formed Incoloy800H pipes are used for risers, which are characterized by corrosion resistance, high temperature creep resistance and certain high temperature strength, and are widely used in the industry. However, the pursuit of higher income with better quality is the foundation of the survival and development of enterprises. The production process and equipment of the rolled pipe are complicated, and the rolled pipe made of Incoloy800H is imported from abroad, so the cost is high. The rolled pipe is prone to uneve...

AI Technical Summary

Problems solved by technology

The production process and equipment of the rolled pipe are complicated, and the rolled pipe made of Incoloy800H is imported from abroad, so the cost is high. The rolled pipe is prone to uneven wall thickness. The uneven distribution of stress will cause uneven stress distribution, thereby reducing the service life of the riser