Titanium-containing phosphating agent, metal part and surface phosphating treatment method of metal part

Abstract

The invention relates to a titanium-containing phosphating agent, a metal part and a surface phosphating treatment method of the metal part. The phosphating agent is used for metal part surface pretreatment and comprises the components of, in parts by weight in 1000 parts, 5-30 parts of phosphoric acid, 3-10 parts of zinc oxide, 0.5-3 part of magnesium salt, 0.5-3 part of aluminum salt, 0.5-5 part of fluotitanic acid and the balance water. A film layer formed by the phosphating agent is fine in structure and firm in adhesive force, a continuous, uniform and colorful phosphating layer can be generated on the surface of the metal part, and the titanium-containing phosphating agent, the metal part and the surface phosphating treatment method of the metal part are applied to phosphating treatment before spraying of the surfaces of steel such as cold-rolled plates, hot-rolled plates and angle steel. The phosphating solution has the advantages of long service life and no wastewater generation, and can be used for phosphating in a brushing, soaking, spraying or combination mode, the adopted temperature is 10-50 DEG C, drying and natural airing can be achieved, energy consumption is reduced to a great extent, phosphating time is short, surface conditioning and accelerant adding are not needed before use, and operation is easy and time-saving.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a titanium-containing phosphating agent, a metal part and a surface phosphating treatment method thereof. Background technique [0002] In order to improve the surface performance or appearance of the product, the surface of the workpiece is usually treated. For example, the surface treatment process of aluminum, iron and their alloys is deeply involved in all walks of life. Moreover, most of the work requires pretreatment before surface treatment, for example, cleaning, decontamination and degreasing, and phosphating, passivation, etc. for metal parts for certain purposes. [0003] Phosphating treatment generally uses a phosphating agent to pretreat metal parts to form a film on the surface of the metal parts for subsequent surface treatment to increase the bonding force and corrosion resistance of the subsequent film. For example, before the metal parts are sp...

AI Technical Summary

Problems solved by technology

However, the existing phosphating agents have high energy consumption, high precipitation, short service life, weak anti-corrosion performance, and complicated operation (surface adjustment is required before phosphating, and phosphating agents need to be added regularly and quantitatively in the phosphating solution, and strict control is required. acidity)