Valve pre-forging constant temperature heating furnace

Abstract

The invention relates to a heating furnace, in particular to a valve pre-forging constant temperature heating furnace. The heating furnace comprises an inner furnace frame and an outer furnace frame, wherein the inner furnace frame is arranged in the outer furnace frame through a strut; a bracket is respectively arranged at two ends of the inner furnace frame; a feeding guide rail, a furnace wirepipe and a cooling bar are arranged on the bracket; two ends of the feeding guide rail extend out of the outer furnace frame respectively; a furnace wire is arranged in the furnace wire pipe, two ends of the furnace wire are fixedly connected with the cooling bar, and the other end of the cooling bar is connected with an external circuit; an outer heat insulation layer is arranged between the outer furnace frame and the inner furnace frame, and an inner heat insulation layer is arranged between the inner furnace frame and the furnace wire pipe; and a temperature sensor sleeve passes through the inner furnace frame and the outer furnace frame and is fixed on the inner heat insulation layer and the outer heat insulation layer, and a temperature sensor is arranged on the temperature sensor sleeve. The heating furnace can be used for heating a blank to a forgeable temperature range, is high in heating efficiency, and can accurately control the tapping temperature of the blank so as to greatly save the production cost and improve the quality of the product.

Description

technical field [0001] The present invention is a heating furnace, especially a constant temperature heating furnace before valve forging. [0002] The furnace can heat the blank to the forgeable temperature range. Background technique [0003] In the processing of valves, the essential process is to use a heating furnace to heat the blank before forging. But the efficiency of the heating equipment currently used is very low. The main reason is that the existing equipment uses a kerosene blowtorch as a heating tool, and the heating environment is open, so there is a lot of heat loss and the energy utilization rate is extremely low. On the other hand, the current heating technology is difficult to accurately control the temperature, which makes the temperature of the blank out of the furnace fluctuate greatly, which greatly affects the quality of the final valve. Contents of the invention [0004] The purpose of the present invention is to overcome the defects of low ther...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of low thermal efficiency and inaccurate temperature control of the existing valve pre-forging heating technology, and to invent a valve pre-forging constant temperature heating furnace. This heating furnace can not only greatly improve the thermal efficiency, but also accurately control the temperature of the blank.

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