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Low-carbon steel surface treatment method

A surface treatment, low carbon steel technology, applied in the field of low carbon steel surface treatment, can solve the problems of surface defects, soft hardness, low carbon content of low carbon steel, etc., to solve the surface quality defects and enhance the cleaning effect.

Inactive Publication Date: 2020-08-04
建龙北满特殊钢有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the low carbon content and soft hardness of low-carbon steel, cracks, scratches and rolling defects are prone to occur on the surface of the steel during rolling. In the subsequent grinding process, it is easy to cause missed inspection of the steel surface, and manual inspection of surface defects is difficult. found, resulting in surface defects leaving the factory, resulting in greater economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] A low-carbon steel surface treatment method, the process flow of the low-carbon steel surface treatment method is pickling → dipping in water for rinsing → dipping in alkali for neutralization → dipping in water for rinsing → drying → trimming → dipping in acid → dipping in heat Water → soap → rinse with water → dry, the composition of the low carbon steel is 0.13wt% C, 0.01wt% Si, 0.38wt% Mn, 0.01wt% P, 0.02wt% S , 0.03wt% Al, 0.2wt% Cr, 0.2wt% Ni, 0.2wt% Cu.

[0020] The surface treatment method for low carbon steel described in this embodiment, in the surface treatment method for low carbon steel, 10 wt% sulfuric acid is used for pickling, the temperature of the acid solution is 50° C., and the pickling time is 5 minutes.

[0021] The low-carbon steel surface treatment method described in this embodiment, in the low-carbon steel surface treatment method, 6.2wt% NaoH is used for neutralization by dipping in alkali, the treatment temperature is 80° C., and the treatmen...

specific Embodiment approach 2

[0030] A low-carbon steel surface treatment method, the process flow of the low-carbon steel surface treatment method is pickling → dipping in water for rinsing → dipping in alkali for neutralization → dipping in water for rinsing → drying → trimming → dipping in acid → dipping in heat Water → soap → rinse with water → dry, the composition of the low carbon steel is 0.15wt% C, 0.1wt% Si, 0.42wt% Mn, 0.025wt% P, 0.02wt% S , 0.05wt% Al, 0.2wt% Cr, 0.2wt% Ni, 0.01wt% Cu.

[0031] The surface treatment method for low carbon steel described in this embodiment, in the surface treatment method for low carbon steel, 15wt% sulfuric acid is used for pickling, the temperature of the acid solution is 50°C, and the pickling time is 5 minutes.

[0032] The low-carbon steel surface treatment method described in this embodiment, in the low-carbon steel surface treatment method, 6.2wt% NaoH is used for neutralization by dipping in alkali, the treatment temperature is 80° C., and the treatment ...

specific Embodiment approach 3

[0041] A low-carbon steel surface treatment method, the process flow of the low-carbon steel surface treatment method is pickling → dipping in water for rinsing → dipping in alkali for neutralization → dipping in water for rinsing → drying → trimming → dipping in acid → dipping in heat Water → soap → rinse with water → dry, the composition of the low carbon steel is 0.14wt% C, 0.1wt% Si, 0.4wt% Mn, 0.02wt% P, 0.02wt% S , 0.03wt% Al, 0.1wt% Cr, 0.1wt% Ni, 0.1wt% Cu.

[0042] The surface treatment method for low carbon steel described in this embodiment, in the surface treatment method for low carbon steel, 10 wt% sulfuric acid is used for pickling, the temperature of the acid solution is 50° C., and the pickling time is 5 minutes.

[0043] The low-carbon steel surface treatment method described in this embodiment, in the low-carbon steel surface treatment method, 6.2wt% NaoH is used for neutralization by dipping in alkali, the treatment temperature is 80° C., and the treatment ...

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Abstract

The invention discloses a low-carbon steel surface treatment method, and belongs to the field of low-carbon steel surface treatment. The invention aims at solving the technical problem of steel surface quality defects. The technological process of the low-carbon steel surface treatment method comprises the following steps of acid pickling, washing with water, neutralizing with alkali, washing withwater, drying, finishing, acid dipping, hot water dipping, soap dipping, washing with water and air drying, the low-carbon steel comprises the components of 0.13 wt%-0.15 wt% of C, 0.01 wt%-0.1 wt% of Si, 0.38 wt%-0.42 wt% of Mn, 0.01 wt%-0.025 wt% of P, 0.01 wt%-0.02 wt% of S, 0.03 wt%-0.05 wt% of Al, 0.01 wt%-0.2 wt% of Cr, 0.01 wt%-0.2 wt% of Ni and 0.01 wt%-0.2 wt% of Cu. The method is used for steel surface treatment.

Description

technical field [0001] The invention belongs to the field of low-carbon steel surface treatment, and in particular relates to a low-carbon steel surface treatment method. Background technique [0002] Low carbon steel is limited in use due to its low strength. Appropriately increasing the manganese content in carbon steel and adding trace amounts of vanadium, titanium, niobium and other alloying elements can greatly increase the strength of the steel. If the carbon content in the steel is reduced and a small amount of aluminum, boron and carbide forming elements are added, an ultra-low carbon bainite group can be obtained with high strength and good plasticity and toughness. Low-carbon steel is generally rolled into angle steel, channel steel, I-beam, steel pipe, steel strip or steel plate, and is used to make various building components, containers, boxes, furnaces and agricultural machinery. High-quality low-carbon steel is rolled into thin plates to make deep-drawn prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08C22C38/42C22C38/02C22C38/04C22C38/06
CPCC22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C23G1/081
Inventor 张立明陈列董贵文刘光辉马天超李艾李庆斌
Owner 建龙北满特殊钢有限责任公司
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