Metallurgical bonding casting process for cooling wall of pure buried copper dissimilar metal pipe

Abstract

The invention relates to a metallurgical bonding casting process for a cooling wall of a pure buried copper dissimilar metal pipe, and belongs to the technical field of cooling walls. The process mainly comprises the following steps that firstly, a buried dissimilar pipe such as a Monel nickel / copper pipe or a steel pipe is selected; secondly, the dissimilar pipe is bent according to requirements of a drawing; thirdly, the surface of the dissimilar pipe is treated; fourthly, after a model is manufactured, modelling is performed, the dissimilar pipe is preheated before pouring, and the preheating temperature of the pipe is controlled to be 40-80 DEG C; and fifthly, a finished product is obtained through pouring, and the pouring temperature is controlled to be 1180-1250 DEG C. The metallurgical bonding casting process has the beneficial effects that the cooling efficiency of the cooling wall of the buried pipe is improved; since the pipe can be bent into a complicated shape, complicated shapes can be manufactured through casting, and the limitation of the shape of a rolled cooling wall and water channel limits is overcome; and the production rate of the buried pipe cooling wall casting process is high, the manufacturing cost is lower than that of rolling, and the investment cost of a blast furnace is lowered.

Description

technical field [0001] The invention relates to a metallurgical combined casting process, in particular to a metallurgical combined casting process for a pure copper-buried heterogeneous metal tube cooling wall, which belongs to the technical field of cooling walls. Background technique [0002] There are two types of blast furnace copper cooling staves: rolling drilled hole and cast buried pipe. At present, rolling and drilling are the main forms in China. The cooling effect of the cooling channel formed by rolling and drilling mainly depends on the material and quality of the rolling billet. Casting buried pipe cooling wall water channel is the inner cavity of buried water pipe, and its cooling effect depends on the thermal conductivity of the pipe material and the fusion between the pipe and the body. There are three kinds of buried pipes according to different pipe materials: copper-copper pipe, copper-Monel nickel / copper pipe, copper-steel pipe. [0003] When the mat...

AI Technical Summary

Problems solved by technology

[0004] The pure copper rolled and drilled stave has the following defects: the welding between the cooling water pipe and the body has the hidden danger of weld cracking, the path of the water channel is limited, the shape is limited by the processing technology, and the utilization rate of materials is low.