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A laboratory simulating phosphating method for the production line of quenched steel plates for automobiles

A laboratory simulation and automobile technology, which is applied in the field of phosphating of quenched steel plate production line for laboratory simulation of automobiles, can solve the problems of danger, affecting the electrophoresis effect, affecting the effect of phosphating electrophoresis, etc., and achieves the effect of cost saving and easy operation.

Active Publication Date: 2021-11-05
TANGSHAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of chemicals added in the phosphating solution and the total acidity of the solution directly affect the morphology, size, and weight of the phosphating film, which in turn affects the effect of electrophoresis in the later stage.
The temperature and time of the whole process of phosphating will also affect the effect of phosphating and later electrophoresis
If the coating technician obtains test samples through the production line to study the process and chemicals, each batch of samples generally takes 40 to 60 minutes, and the coating technician needs to carry out on-site hanging, and the hanging on the line requires a certain speed. has a certain risk

Method used

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  • A laboratory simulating phosphating method for the production line of quenched steel plates for automobiles
  • A laboratory simulating phosphating method for the production line of quenched steel plates for automobiles
  • A laboratory simulating phosphating method for the production line of quenched steel plates for automobiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The 1.5mm thick DC03 steel newly taken by our company from the same coil is divided into two batches, one is hanged with the production line, and the other is phosphating test in the laboratory phosphating line.

[0040] The laboratory simulates the specific process and sample information of the phosphating method of the quenched steel plate production line for automobiles as follows: including pre-ironing, local ironing, pre-degreasing, local degreasing, tap water washing 1, tap water washing 2, surface conditioning, phosphating, Tap water washing 3, tap water washing 4, pure water washing 1, pure water washing 2 and air-drying process, the specific process steps are as follows:

[0041] (1) Pre-ironing process: Spray tap water with a watering can, the water temperature is 35°C, and the spraying time is 1min;

[0042] (2) The ironing process: heating with tap water constant temperature water bath, the temperature is 35°C, and the soaking time is 1.5min;

[0043] (3) P...

Embodiment 2

[0060] The 1.5mm thick DC01 steel newly taken by our company from the same coil is divided into two batches, one batch is phosphating with the production line, and the other is phosphating test in the laboratory phosphating line.

[0061] The laboratory simulates the specific process and sample information of the phosphating method of the quenched steel plate production line for automobiles as follows: including pre-ironing, local ironing, pre-degreasing, local degreasing, tap water washing 1, tap water washing 2, surface conditioning, phosphating, Tap water washing 3, tap water washing 4, pure water washing 1, pure water washing 2 and air-drying process, the specific process steps are as follows:

[0062] (1) Pre-ironing process: Spray tap water with a watering can, the water temperature is 50°C, and the spraying time is 2 minutes;

[0063] (2) This ironing process: use tap water to heat in a constant temperature water bath, the temperature is 50°C, and the soaking time is 2....

Embodiment 3

[0081] The 2.5mm thick DC01 steel newly taken from the same roll by our company is divided into two batches, one batch is phosphating with the production line, and the other is phosphating test in the laboratory phosphating line.

[0082] Laboratory phosphating line methods include pre-ironing, local ironing, pre-degreasing, local degreasing, tap water washing 1, tap water washing 2, surface conditioning, phosphating, tap water washing 3, tap water washing 4, pure water washing 1, pure water washing 2 And air-drying operation, concrete process steps are as follows:

[0083] (1) Pre-ironing process: Spray tap water with a watering can, the water temperature is 40°C, and the spraying time is 1.5 minutes;

[0084] (2) This ironing process: use tap water constant temperature water bath to heat, the temperature is 40 ℃, and the soaking time is 2.0min;

[0085] (3) Pre-degreasing process: Spray the sample with a watering can at a temperature of 40°C for 2.0 minutes;

[0086] The m...

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Abstract

The invention discloses a phosphating method for simulating the production line of quenched steel plates for automobiles in a laboratory. The phosphating method includes pre-ironing, local ironing, pre-degreasing, local degreasing, tap water washing 1, tap water washing 2, surface conditioning, and phosphating , washing with tap water 3, washing with tap water 4, washing with pure water 1, washing with pure water 2 and air-drying process; in the phosphating process, the temperature is 35-45° C. and the time is 2.5-3.5 min. The laboratory simulates the phosphating method of the quenched steel plate production line for automobiles in the present invention. The phosphating process is easy to operate, and the operation can be completed without advanced phosphating coating knowledge, and there is no need to purchase large-scale phosphating experimental equipment, which saves a lot of cost.

Description

technical field [0001] The invention belongs to the technical field of steel plate coating, and in particular relates to a phosphating method for a production line of a quenched steel plate for a laboratory simulation automobile. Background technique [0002] Painting is an important link in the manufacturing process of modern automobiles, home appliances and other products. The quality of painting directly affects the corrosion resistance and aesthetics of the product in the later stage, and is an important factor that constitutes the value of the product. The content of alkali and surfactant in the degreasing agent directly affects the degreasing effect during the phosphating process, which in turn seriously affects the surface adjustment and phosphating in the later stage. The content of corrosion inhibitor in the degreasing agent has a certain impact on metal corrosion. Washing after degreasing will directly expose the metal to a humid environment, and the washing temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/73C23C22/78C23C22/36
CPCC23C22/368C23C22/73C23C22/78
Inventor 孟凡月杜雁冰齐建群张静夏明生孟根巴根艾兵权吕浩王秋雨
Owner TANGSHAN IRON & STEEL GROUP
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