Phosphorization treatment technology of steel

Abstract

The invention discloses a phosphorization treatment technology of steel, and belongs to the technical field of steel processing. The phosphorization treatment technology comprises the specific steps of (1) degreasing treatment; (2) polishing treatment; (3) water washing treatment; (4) phosphorization treatment; and (5) drying treatment. According to the phosphorization treatment technology, bonding strength of steel interferes can be effectively strengthened and can be improved by 20% or above, implementation of the surface bonding technology is better facilitated, the entire treatment time of the technology is shortened by 60% or above, the processing efficiency is remarkably improved, and quite good economic benefits are achieved.

Description

technical field

[0001] The invention belongs to the technical field of steel processing, and in particular relates to a phosphating process for steel. Background technique

[0002] Surface adhesive coating technology is a new technology that a composite material adhesive composed of high molecular polymer and special filler is coated on the surface of parts to achieve a certain purpose. The method of improving the interface bonding strength is mainly divided into two aspects. The first is to change the composition of the binder used in the composite material, and to improve the bonding force by modifying the binder. The second is the surface pretreatment of the metal substrate, which is also an important factor affecting the bonding strength of the adhesive / metal interface. Before bonding, a series of treatments are carried out on the metal surface to remove the oxide layer and dust on the metal surface to form a new surface, which can improve the strength of the metal inte...

Examples

Embodiment 1

[0022] A phosphating treatment process for steel, comprising the steps of:

[0023] (1) Degreasing treatment:

[0024] Put the steel to be processed into the degreasing solution for degreasing treatment, and take it out for later use;

[0025] (2) Grinding treatment:

[0026] First use 80-mesh sandpaper to polish the steel after step (1), and then use 320-mesh sandpaper for secondary grinding;

[0027] (3) Washing treatment:

[0028] After washing with deionized water to remove impurities such as debris on the surface of the steel after the treatment in step (2), place it at a temperature of 80°C for drying treatment before use;

[0029] (4) Phosphating treatment:

[0030] a. Take the material according to the corresponding weight portion and prepare it as a phosphating treatment solution for subsequent use; the mass fraction of each substance in the phosphating treatment solution is: 2% sodium dihydrogen phosphate, 0.3% phosphoric acid, 0.2% sodium nitrate, 0.1% nitric ac...

Embodiment 2

[0037] A phosphating treatment process for steel, comprising the steps of:

[0038] (1) Degreasing treatment:

[0039] Put the steel to be processed into the degreasing solution for degreasing treatment, and take it out for later use;

[0040] (2) Grinding treatment:

[0041] First use 80-mesh sandpaper to polish the steel after step (1), and then use 320-mesh sandpaper for secondary grinding;

[0042] (3) Washing treatment:

[0043] After washing with deionized water to remove impurities such as debris on the surface of the steel treated in step (2), dry it at a temperature of 85°C for later use;

[0044] (4) Phosphating treatment:

[0045] a. Take the material according to the corresponding weight portion and prepare it as a phosphating treatment solution for subsequent use; the mass fraction of each substance in the phosphating treatment solution is: 3% sodium dihydrogen phosphate, 0.5% phosphoric acid, 0.4% sodium nitrate, 0.3% nitric acid Zinc, 0.15% citric acid, 0.2...

technical field

[0001] The invention belongs to the technical field of steel processing, and in particular relates to a phosphating process for steel. Background technique

[0002] Surface adhesive coating technology is a new technology that a composite material adhesive composed of high molecular polymer and special filler is coated on the surface of parts to achieve a certain purpose. The method of improving the interface bonding strength is mainly divided into two aspects. The first is to change the composition of the binder used in the composite material, and to improve the bonding force by modifying the binder. The second is the surface pretreatment of the metal substrate, which is also an important factor affecting the bonding strength of the adhesive / metal interface. Before bonding, a series of treatments are carried out on the metal surface to remove the oxide layer and dust on the metal surface to form a new surface, which can improve the strength of the metal inte...

Examples

Embodiment 1

[0022] A phosphating treatment process for steel, comprising the steps of:

[0023] (1) Degreasing treatment:

[0024] Put the steel to be processed into the degreasing solution for degreasing treatment, and take it out for later use;

[0025] (2) Grinding treatment:

[0026] First use 80-mesh sandpaper to polish the steel after step (1), and then use 320-mesh sandpaper for secondary grinding;

[0027] (3) Washing treatment:

[0028] After washing with deionized water to remove impurities such as debris on the surface of the steel after the treatment in step (2), place it at a temperature of 80°C for drying treatment before use;

[0029] (4) Phosphating treatment:

[0030] a. Take the material according to the corresponding weight portion and prepare it as a phosphating treatment solution for subsequent use; the mass fraction of each substance in the phosphating treatment solution is: 2% sodium dihydrogen phosphate, 0.3% phosphoric acid, 0.2% sodium nitrate, 0.1% nitric ac...

Embodiment 2

[0037] A phosphating treatment process for steel, comprising the steps of:

[0038] (1) Degreasing treatment:

[0039] Put the steel to be processed into the degreasing solution for degreasing treatment, and take it out for later use;

[0040] (2) Grinding treatment:

[0041] First use 80-mesh sandpaper to polish the steel after step (1), and then use 320-mesh sandpaper for secondary grinding;

[0042] (3) Washing treatment:

[0043] After washing with deionized water to remove impurities such as debris on the surface of the steel treated in step (2), dry it at a temperature of 85°C for later use;

[0044] (4) Phosphating treatment:

[0045] a. Take the material according to the corresponding weight portion and prepare it as a phosphating treatment solution for subsequent use; the mass fraction of each substance in the phosphating treatment solution is: 3% sodium dihydrogen phosphate, 0.5% phosphoric acid, 0.4% sodium nitrate, 0.3% nitric acid Zinc, 0.15% citric acid, 0.2...