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Long-acting anti-rust method and equipment for hot-rolled magnetic yoke steel

A yoke steel, long-term technology, applied in the field of hot rolling, can solve the problems of easy rust on the surface of yoke steel products, achieve good anti-rust effect, simple operation, and solve the effect of easy rust

Inactive Publication Date: 2018-12-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the surface of yoke steel products is prone to rust, and users often report surface quality problems

Method used

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  • Long-acting anti-rust method and equipment for hot-rolled magnetic yoke steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a long-term anti-rust equipment for hot-rolled yoke steel includes in sequence according to the moving direction of hot-rolled yoke steel: No. 1 pinch roller 1, upper and lower coarse brush rollers 2, No. 2 pinch roller 3, upper and lower fine brushes Roller 4, No. 3 pinch roller 5, antirust agent nozzle 7 and purge nozzle 8; in addition, an antirust agent liquid reservoir 6 is connected to the antirust agent nozzle 7.

[0030] There are two rows of antirust agent nozzles, which are respectively arranged on the upper and lower sides of the hot-rolled yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled yoke steel is 60°. The distance (shortest distance) between the two rows of nozzles is 35mm, and the injection pressure is 0.7Mpa.

[0031] The purging nozzles are in two rows, respectively arranged on the upper and lower sides of the hot-rolled yoke steel, and the included angle between the nozzles ...

Embodiment 2

[0044] A long-term anti-rust equipment for hot-rolled yoke steel includes: No. 1 pinch roller, upper and lower coarse brush rollers, No. 2 pinch roller, upper and lower fine brush rollers, and No. 3 pinch roller according to the moving direction of hot-rolled yoke steel Roller, anti-rust agent nozzle and blowing nozzle; in addition, a anti-rust agent reservoir is also provided to connect with the anti-rust agent nozzle.

[0045] The anti-rust agent nozzles are in two rows, respectively arranged on the upper and lower sides of the hot-rolled yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled yoke steel is 75°. The distance (shortest distance) between the two rows of nozzles is 38mm, and the injection pressure is 0.9Mpa.

[0046]The purging nozzles are in two rows, respectively arranged on the upper and lower sides of the hot-rolled yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled yok...

Embodiment 3

[0059] Embodiment 3 is substantially the same as Example 2, and the only difference is that the rust remover used is prepared by the following steps: 1) the preparation mass fraction is a 5.2% phosphoric acid solution; 2) adding citric acid and tannic acid in the phosphoric acid solution, After the addition, the concentration of citric acid is 230mg / L, the concentration of tannic acid is 265mg / L, and it is stirred for 35 minutes at a speed of 95 rpm; Add sodium tungstate dropwise. After the addition, the concentration of sodium tungstate is 490mg / L. After the dropwise addition, stir for 45 minutes at a stirring speed of 40 rpm; 4) Cool to room temperature to form a rust inhibitor.

[0060] After this process, the hot-rolled yoke steel starts to rust a little after 63 hours under the conditions of temperature 49°C and relative humidity 98%.

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Abstract

The invention provides long-acting anti-rust equipment for hot-rolled magnetic yoke steel. The long-acting anti-rust equipment of the hot-rolled magnetic yoke steel comprises first pinch rollers, up-down rough brushing rollers, second pinch rollers, up-down fine brushing rollers, third pinch rollers, antirust agent nozzles and purging nozzles according to the moving direction of the hot-rolled magnetic yoke steel; and in addition, an anti-rust agent liquid storage tank is further arranged and is connected with the anti-rust agent nozzles. The invention further provides an anti-rust method using the equipment. The rust-proof equipment and the rust-proof method are used, so that the hot-rolled magnetic yoke steel is not rusted for 72 hours under the conditions of the temperature of 49 DEG Cand the relative humidity of 98%, and the anti-rust effect is good. The long-acting anti-rust equipment and method effectively solve the problem that hot-rolled chromium-molybdenum low alloy steel iseasy to rust, and therefore, the long-acting anti-rust equipment and method belong to the environment-friendly production process of steel and iron, and have good social benefit and environmental benefit.

Description

technical field [0001] The invention belongs to the technical field of hot rolling, and in particular relates to a production process and method for long-term rust prevention of yoke steel. Background technique [0002] As my country's basic industry, the iron and steel industry has developed rapidly since the reform and opening up, and has been in a high-speed development stage in recent years. [0003] There are many kinds of yoke steel, which can be roughly divided into high manganese steel, medium and low alloy yoke steel, chromium molybdenum silicon manganese steel, cavitation resistant steel, corrosion resistant steel and special yoke steel. Some general-purpose alloy steels such as stainless steel, bearing steel, alloy tool steel and alloy structural steel are also used as yoke steel under specific conditions. Because of their convenient source and excellent performance, they also occupy an important role in the use of yoke steel. a certain ratio. [0004] However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/00C23C22/08C23C22/76C22C38/04C22C38/02
CPCC22C38/002C22C38/02C22C38/04C23C22/00C23C22/08C23C22/76
Inventor 杨征范群李恩超祁庆琚杨峰王学敏
Owner BAOSHAN IRON & STEEL CO LTD
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