Large bottom plate made of forged blank for annular heating furnace and method for manufacturing large bottom plate

Abstract

Disclosed is a large bottom plate made of a forged blank for an annular heating furnace. A main body of the large bottom plate is of a disc structure, the surface of one side of the disc structure is a plane, the center of the other side of the disc structure is another plane, outer peripheries of the planes are conical surfaces, a center hole is arranged in the center of the large bottom plate, circular bosses respectively encircle the center hole, and a blank of the large bottom plate is the forged blank. The large bottom plate is made of heat-resistant stainless steel, the heat-resistant stainless steel is cast by a steel die to form a cast blank, the cast blank is subjected to solution treatment and then is forged to form the forged blank, the forged blank is subjected to nondestructive flaw detection after being roughly machined and finely machined sequentially, and a product which is qualified in the nondestructive flaw detection is the finished large bottom plate. The large bottom plate made of the forged blank for the annular heating furnace and a method for manufacturing the large bottom plate have the advantages that the structure of the blank can be improved by the aid of characteristics of a forging process, the high-temperature strength and the high-temperature stability of the large bottom plate for the annular heating furnace are greatly improved, working requirements of the annular heating furnace are met, and an effect is obvious.

Description

technical field [0001] The invention relates to a large bottom plate of an annular heating furnace and a manufacturing method thereof, in particular to a large bottom plate of an annular heating furnace using a forging blank and a manufacturing method thereof. Background technique [0002] The ring heating furnace is the heating equipment for heating the workpiece in the thermal processing and heat treatment process. The large bottom plate of the ring heating furnace is set at the bottom of the ring heating furnace, and it needs to work stably for a long time under the condition of bearing load in a high temperature environment. The commonly used large bottom plate of the annular heating furnace is made of ordinary heat-resistant steel casting process, which has many shrinkage cavities, non-compact structure, poor strength and stability in high temperature environment, unstable performance, variability, The working life is short and cannot meet the working needs of the annul...

AI Technical Summary

Problems solved by technology

The commonly used large bottom plate of the annular heating furnace is made of ordinary heat-resistant steel casting process, which has many shrinkage cavities, non-compact structure, poor strength and stability in high temperature environment, unstable performance, variability, The working life is short and cannot meet the working needs of the annular heating furnace

Images