Production technology for heavy type super-long shaft

Abstract

The invention relates to production technology for a heavy type super-long shaft. The process comprises the procedures of material preparing, heating, forging, cooling or heat treating and finished product inspecting. In the process, a production line is reasonably arranged; forging and pressing equipment is arranged along a line according to the maximum capacity volume of the forging and pressing equipment; compact layout of two parallel production lines is formed by forging and pressing and heating; and heated steel ingots are directly delivered to the forging and pressing equipment by a crane, and then forged and pressed forged pieces are transported to a heat treatment furnace or a slow cooling pit by the crane. In the process, the procedures are in close fit with each other and are reasonably joined together through reasonable arrangement of the equipment; and the heating number is reduced, so the switching between procedures is reduced, the working efficiency is enhanced, energyloss is reduced and the manufacturing cost is greatly lowered.

Description

technical field [0001] The invention relates to a production process of a heavy super long shaft. Background technique [0002] In the conventional forging process, the processes of heating, forging, and cooling are disjointed, the auxiliary production time is long, and the indicators such as man-hour utilization rate and equipment start-up rate are in a backward state, and it is difficult to increase product output. Especially for heavy-duty shaft parts with a length of more than 8 meters, two or more forged shafts are generally welded together after rough machining, and then final machining and heat treatment are carried out after annealing and inspection. The long shaft manufactured by this process involves many processes, the utilization rate of forging materials is only 50-60%, and the utilization rate of raw materials is only 40-50%. Compared with forging processing, there is a big gap. [0003] For example, the maximum length of shaft forgings produced by our factor...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high energy consumption, low work efficiency, low output, and long-axis parts requiring two-part welding to affect performance indicators in the prior art, the present invention provides a production process for heavy-duty super-long shafts. Through the rational arrangement of equipment, the process can Make the various processes closely cooperate and rationally connect, reduce the number of heating fires, reduce the conversion between processes, improve work efficiency, reduce energy loss, and greatly reduce the production cost

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