Supercharging technology of gas protection device of annealing furnace

Abstract

The invention relates to a supercharging technology of a gas protection device of an annealing furnace. The technology comprises the following steps: 1, carrying out thickness and diameter reduction stretching of a raw material welded tube, and carrying out cleaning pressurizing and annealing a plurality times; 2, carrying out thickness and diameter reduction stretching of the welded tube again; and 3, straightening the welded tube subject to two-time thickness and diameter reduction stretching, cleaning, inspecting, and packaging. The technology has the following characteristics: 1, the unstable quality brought by the frequent replacement of bottle-packed hydrogen is reduced, so an oxidation problem is avoided, and the stable quality is guaranteed; 2, the cost is reduced; 3, the safe production risk coefficient is reduced; and 4, the manpower, the material resource and the transport cost are reduced, and energy saving and consumption reduction are realized.

Description

technical field

[0001] The invention relates to a precision pipe processing technology, in particular to a pressurization technology of an annealing furnace gas protection device. Background technique

[0002] During the processing of precision stainless steel tubes and capillary tubes, they need to undergo annealing process before further processing, and some products have to undergo multiple annealing and multiple processing. The current annealing furnace adopts a continuous bright and non-oxidizing method for processing. The protective gas used, the hydrogen-nitrogen mixed gas for external protection, and the high-purity hydrogen have a high cost and a large risk factor during transportation. Contents of the invention

[0003] In order to solve the above problems, the present invention provides a pressurization technology of an annealing furnace gas protection device with high safety factor, improved work efficiency and reduced use cost.

[0004] Technical scheme of th...

Examples

Embodiment Construction

[0014] A sort of The pressurization technology of the annealing furnace gas protection device includes the following steps:

[0015] 1) The raw material welded pipe is stretched by reducing the wall and diameter, cleaning, pressing and annealing for many times;

[0016] 2) Stretch the above-mentioned welded pipe by reducing the wall and reducing the diameter again;

[0017] 3) Straighten, clean, inspect, and pack the welded pipe after twice wall-reducing and diameter-reducing stretching.

[0018] The annealing process adopts liquid ammonia, and enters the annealing process after decomposition furnace, purification, hydrogen compressor and hydrogen storage tank.

technical field

[0001] The invention relates to a precision pipe processing technology, in particular to a pressurization technology of an annealing furnace gas protection device. Background technique

[0002] During the processing of precision stainless steel tubes and capillary tubes, they need to undergo annealing process before further processing, and some products have to undergo multiple annealing and multiple processing. The current annealing furnace adopts a continuous bright and non-oxidizing method for processing. The protective gas used, the hydrogen-nitrogen mixed gas for external protection, and the high-purity hydrogen have a high cost and a large risk factor during transportation. Contents of the invention

[0003] In order to solve the above problems, the present invention provides a pressurization technology of an annealing furnace gas protection device with high safety factor, improved work efficiency and reduced use cost.

[0004] Technical scheme of th...

Examples

Embodiment Construction

[0014] A sort of The pressurization technology of the annealing furnace gas protection device includes the following steps:

[0015] 1) The raw material welded pipe is stretched by reducing the wall and diameter, cleaning, pressing and annealing for many times;

[0016] 2) Stretch the above-mentioned welded pipe by reducing the wall and reducing the diameter again;

[0017] 3) Straighten, clean, inspect, and pack the welded pipe after twice wall-reducing and diameter-reducing stretching.

[0018] The annealing process adopts liquid ammonia, and enters the annealing process after decomposition furnace, purification, hydrogen compressor and hydrogen storage tank.