Gas heating furnace for hub forging

Abstract

Provided is a gas heating furnace for hub forging. Primary air inlet branches extend from the left side and right side of an outlet of an air inlet pipeline of the gas heating furnace respectively, and each primary air inlet branch is connected with secondary air inlet branches in parallel; outlets of the secondary air inlet branches extend from the left wall and right wall of a furnace body to the inside of the furnace body; primary air exhaust branches extend from the left side and right side of an inlet of an air exhaust pipeline respectively, and each primary air exhaust branch is connected with secondary air exhaust branches in parallel; inlets of the secondary air exhaust branches are communicated to the inside of the furnace body from the left wall and right wall of the furnace body; the secondary air inlet branches correspond to the secondary air exhaust branches in a one-to-one mode; four outlet ends of a gas pipeline correspond to the secondary air exhaust branches respectively; electromagnetic control valves are arranged on the secondary air inlet branches and the secondary air exhaust branches and connected with a control unit. The hub turning step is omitted, blow-in frequency and reactive loss of heat are reduced, heating efficiency is improved, heat in the furnace forms convection, constant pressure of the furnace is guaranteed, and heated uniformity and high efficiency of a hub are improved.

Description

technical field [0001] The invention relates to a gas heating furnace used for forging a wheel hub. Background technique [0002] At present, for the gas heating furnace used in wheel hub forging, box-type furnaces are mostly used. The arrangement of gas burners is divided into three arrangements: one-way side spray, one-way top spray and rear spray. [0003] Among the above three arrangements, the first two have high heating efficiency, but in these two arrangements, the flame from the gas burner is directly sprayed from one side to the surface of the heating workpiece to heat rapidly, and the flame directly When sprayed onto the heated workpiece, there is a problem of overheating and overburning on one side and insufficient heating on the other side. The current solution is to turn the heating hub over at intervals so that both sides are evenly heated. In addition, the form of single-side flame injection creates high pressure in the heating furnace, and the heat cannot b...

AI Technical Summary

Problems solved by technology

In addition, the form of single-side flame injection creates high pressure in the heating furnace, and the heat cannot be circulated and concentrated in one area, which is easy to cause damage to other parts in the furnace such as the furnace door.

However, the structural form of post-spraying avoids one-sided overburning and overheating, but its thermal efficiency and temperature uniformity between the upper and lower furnaces are poor.

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