A kind of aluminum alloy profile quenching additive and quenching process

Abstract

In order to solve the problems existing in the prior art, the present invention proposes a quenching process for aluminum alloy profiles, mainly by using a specific quenching agent additive to at least make the quenching agent not easy to turn black and smelly, the service cycle is long, the maintenance times are reduced, and the Product quality consistency.

Description

technical field [0001] The invention belongs to the technical field of quenching liquid, and in particular relates to a related quenching process using a quenching agent additive. Background technique [0002] Quenching agent is a cooling medium used in the quenching stage of metal materials or alloys, especially aluminum alloy materials in the production process; commonly used quenching media include water, oil, molten salts, air, etc. The scope of application of oil quenching agents is relatively special. For aluminum alloys, when dealing with large workpieces, thick smoke billows during quenching, accompanied by violent combustion, resulting in numerous fires every year, huge losses, and a pungent odor, causing Serious environmental pollution; for aluminum alloys, the surface is not easy to clean and easily polluted, which affects the aesthetics of the finished product and requires additional cleaning steps. The corresponding water-based quenching agent is the most widel...

AI Technical Summary

Problems solved by technology

However, PAG is not a perfect quenching agent. After all, the quenching of the workpiece is an ultra-high temperature process. Although the PAG polymer itself is relatively stable, it will hardly be oxidized and decomposed under normal conditions, and will not react with acid-base substances. It is neutral itself, but during use, due to the adhesion of PAG on the surface of the workpiece, it will be taken out. On the other hand, there are PAG, air and ultra-high temperature workpieces at the interface of the workpiece contacting the quenching agent. These three Under these conditions, complex reactions will occur on the surface, and PAG will be oxidized and decomposed, especially when the workpiece is large, the loss of PAG will be more, and the oxidized PAG will cause the quenching agent to turn black, and it will become a foul smell after a long time

[0006] The prior art has improved PAG. For example, 201110334830.4 discloses the addition of stabilizers containing polysiloxane solution, diisobutyl ketone, alkenyl succinic acid-zinc naphthenate, barium sulfonate, polyethylene glycol, etc., mainly It involves the performance of the workpiece, but the patent does not involve the state of PAG itself, and the diisobutyl ketone used is highly toxic, volatile, and strongly irritating to the eyes and nose. Repeated contact will cause nausea, dizziness, and liver and kidney damage. damage

Dalian Sairui Metal Products has published a series of patent applications, adding various components to the quenching liquid, such as preservatives, defoamers, fungicides, rust inhibitors, etc., but did not pay attention to the service life of the quenching liquid

In addition, CN105132642 also discloses a function recovery agent for quenching liquid, which uses triethanolamine, monoethanolamine, N, N'-methylenedimorpholine, triazine, boric acid and other substances. On the one hand, the composition of the recovery agent is complex and large It is an organic small molecular compound. On the other hand, the patent does not test whether the quenching agent can maintain the original performance after the recovery agent is used.

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