Solid solution heat treatment furnace

Abstract

The invention discloses a solid solution heat treatment furnace which comprises a roller hearth type heat treatment furnace and a quenching machine which are connected, wherein the roller hearth type heat treatment furnace comprises a furnace body, furnace walls are arranged at the periphery of the furnace body, a furnace body feed hole and a furnace body discharge hole are respectively and correspondingly arranged in the furnace body, a plurality of furnace roller devices are arranged in parallel between the furnace body feed hole and the furnace body discharge hole, both ends of each furnace roller device are sealed in the furnace walls through a sealing module, each furnace roller device comprises a water cooling support shaft and a roller body, each water cooling support shaft is provided with a cooled water channel, each roller body is provided with an axially perforating cavity, each water cooling support shaft passes through the cavity and penetrates in the roller body, the roller body synchronously rotates with each water cooling support shaft, a containing space is arranged between the outer wall of each water cooling support shaft and the inner wall of each roller body, a plurality of support assemblies are arranged in parallel in the containing space at intervals along the axial direction, one side of each support assembly is connected with the outer wall of each water cooling support shaft, and a predetermined gap is arranged between the other side of each support assembly and the inner wall of each roller body.

Description

technical field [0001] The invention relates to a solution heat treatment furnace, in particular to a solution heat treatment furnace for high-temperature stainless steel and heat-resistant alloy steel, which can operate stably for a long time under the condition that the furnace temperature is higher than 1250°C. Background technique [0002] The solution heat treatment furnace includes an interconnected roller hearth heat treatment furnace and a quenching machine. The roller hearth heat treatment furnace is a process equipment commonly used in iron and steel metallurgy, nonferrous metallurgy and machinery industries. During the production process of the roller hearth heat treatment furnace, the furnace roller is placed inside the heating furnace, and the heated workpiece is placed on the furnace roller. According to the speed and temperature set by the relevant process, the workpiece is driven by the furnace roller and heated while being transported in the heating furnace....

AI Technical Summary

Problems solved by technology

[0005] 1. No cooling furnace roll, its structure is simple and easy to install, but when the furnace temperature is higher than 1200 degrees Celsius, the material of the roll body of the non-cooling furnace roll must have extremely high high-temperature strength performance, and it is bound to use alloys with high Cr and Ni content Hot steel, resulting in extremely high cost of furnace rollers, greatly increasing equipment costs

[0006] 2. The direct cooling furnace roller device, due to the direct contact between the cooling medium and the inner wall of the roller body, the surface temperature of the roller body is very low, the heat loss of the heat treatment furnace is large, the thermal efficiency is low, and the energy waste is more serious; moreover, the heated workpiece is reduced heat treatment quality

[0007] At this temperature, the furnace roller sealing structure of the conventional roller hearth heat treatment furnace can no longer meet the sealing and heat insulation requirements at this high temperature, and the conventional quenching machine cannot meet the cooling requirements of the workpiece at this high temperature.

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