Rust remover for ultrasonically cleaning metal mould and preparation method thereof

Abstract

The invention discloses non-corroding ultrasonic cleaning equipment. A rust remover for ultrasonically cleaning a metal mould is used for rapidly and completely removing rusts on the surface of the metal mould, generating a dense and complete passivation film at the same time and avoiding a secondary oxidization. The rust remover is prepared from the following raw materials by mass percent: 8-30% of phosphoric acid, 6-25% of room-temperature steel surface conditioning agent, 1-4% of citric acid, 1-5% of tartaric acid, 1-4% of phytic acid, 1-8% of polyethylene glycol, 1-3% of penetrant JFC, 1-6% of ethylene glycol monobutyl ether and the balance of water. A preparation method of the rust remover comprises the following steps of: firstly, adding water with a calculated amount into a stainless steel reaction kettle, starting an agitator and controlling a rotary speed of the agitator to 40-60 r / min; then respectively taking the calculated amount of the phosphoric acid, the room-temperature steel surface conditioning agent, the citric acid, the tartaric acid, the phytic acid, the polyethylene glycol, the JFC and the ethylene glycol monobutyl ether and sequentially and slowly adding the materials into the reaction kettle; and adding the materials while agitating until the solution becomes a light-green transparent liquid.

Description

technical field [0001] The invention relates to a metal mold ultrasonic cleaning derusting agent and a preparation method thereof, in particular to a non-corrosive ultrasonic cleaning equipment, which can quickly and completely remove metal mold surface rust and simultaneously form a tight and complete passivation film to avoid secondary oxidation. Metal mold ultrasonic cleaning derusting agent and preparation method thereof. Background technique [0002] During the processing of metal molds for pressing plastic products, aluminum alloy products, zinc alloy products, etc., due to high-temperature oxidation, wear damage, and erosion of corrosive media in humid air, the anti-rust oil film on the surface is destroyed, so the surface of the metal mold gradually A large amount of rust will seriously affect the surface quality of plastic products and various alloy products, and the metal mold must be pickled to remove rust. Due to the complex structure and shape of the metal mold...

AI Technical Summary

Problems solved by technology

However, since the existing metal mold ultrasonic cleaning and derusting agents basically contain hydrochloric acid, sulfuric acid or oxalic acid, and the additives and corrosion inhibitors used do not match, the following problems exist:

[0003] 1. Corrosion of stainless steel tanks of ultrasonic equipment;

[0004] 2. The cleaning speed is slow, the temperature condition is high, and sometimes the problem of incomplete rust removal occurs;

[0005] 3. After the mold has been cleaned and derusted, corrosion occurs, not only the surface is blackened, and the true color of the metal substrate cannot be exposed, but also the dimensional accuracy of the mold is changed, the surface finish is destroyed, and the mold is scrapped;

[0007] 5. Although the anti-rust treatment was carried out after cleaning and derusting, the anti-rust period did not reach three months