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Hot-rolled pickled plate for refrigerator compressor shell and production method thereof

A refrigerator compressor, hot-rolled pickling technology, applied in the directions of rolls, metal rolling, metal rolling, etc., can solve problems such as unfavorable welding, and achieve the improvement of transverse printing defects, improve transverse printing problems, and improve production efficiency. Effect

Inactive Publication Date: 2021-06-25
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the addition of B elements is not conducive to welding

Method used

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  • Hot-rolled pickled plate for refrigerator compressor shell and production method thereof
  • Hot-rolled pickled plate for refrigerator compressor shell and production method thereof
  • Hot-rolled pickled plate for refrigerator compressor shell and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A hot-rolled pickling plate for a refrigerator compressor shell in this embodiment, the main chemical components of the hot-rolled pickling steel plate are: C: 0.035-0.060%, Si≤0.030%, Mn: 0.30%-0.50 %, P≤0.020%, S:≤0.012%, Al: 0.025~0.050%, N≤0.0045%, and the rest are Fe and unavoidable impurity elements; the microstructure of the hot-rolled pickled steel plate is ferrite + a small amount of pearlite + a small amount of carbide, the grain size of the structure is 10-11, the yield strength range is 260-340MPa, the tensile strength is ≥390MPa, and the elongation after fracture is ≥40%.

[0037] The reason for the limited range of alloy element content in the present invention is as follows:

[0038] C: C is the most economical and effective solid-solution strengthening element to improve the strength. The increase of C content will increase the strength. If the C content is too high, C will exist as undissolved carbides, which will affect the formability of the steel pla...

Embodiment 2

[0046] The production method of a kind of hot-rolled pickling plate for refrigerator compressor shell of the present embodiment, basic structure is the same as embodiment 1, difference and improvement are: the chemical composition (mass percentage) of embodiment of the present invention and comparative example See Table 1, the rest are Fe and unavoidable impurity elements.

[0047] The chemical composition (wt %) of table 1 embodiment and comparative example

[0048]

[0049] According to the requirements of the material composition design of the present invention, the molten iron is pretreated, the slag is removed before and after the slag is removed, and the target S after desulfurization of the molten iron is ≤ 0.005%. Converter top-bottom compound blowing, LF furnace temperature rises and ensures that bottom blowing Ar stirring time is greater than 5 minutes, RH furnace performs vacuum cycle degassing treatment, adopts light treatment process, adjusts target value; ensu...

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Abstract

The invention discloses a hot-rolled pickled plate for a refrigerator compressor shell and a production method thereof, and relates to the field of hot-rolled pickled household appliance plates. According to the hot-rolled pickled plate for the refrigerator compressor shell and the production method thereof, the hot-rolled pickled plate comprises the following main chemical components in percentage by weight: 0.035-0.060% of C, less than or equal to 0.030% of Si, 0.30-0.50% of Mn, less than or equal to 0.020% of P, less than or equal to 0.012% of S, 0.025-0.050% of Al, less than or equal to 0.0045% of N and the balance of Fe and inevitable impurity elements. After a casting blank is reheated by a heating furnace, the casting blank is rolled on a continuous hot continuous rolling mill and is sequentially subjected to rough rolling, finish rolling and laminar cooling, and then coiling to produce a qualified hot-rolled plate coil. The plate shape and transverse printing are improved through hot rolling flattening, and then a hot-rolled pickled plate finished product is obtained through pickling.

Description

technical field [0001] The invention relates to the field of hot-rolled pickling boards for household appliances, and more specifically relates to a hot-rolling pickling board for refrigerator compressor shells and a production method thereof. Background technique [0002] Hot-rolled pickled steel sheets are widely used in automobiles, home appliances, machinery and other fields. Compared with cold-rolled sheets, it has the characteristics of low cost, excellent formability, and thick specifications; compared with hot-rolled sheets, it has smooth surface, excellent shape, high dimensional accuracy, and can be directly coated without sandblasting, etc. advantage. With the upgrading of the production lines and the improvement of the technical level of major iron and steel enterprises in the country, the performance stability and surface quality of the pickling sheet are gradually approaching that of the cold-rolled sheet, and the "replacing cold with heat" is gradually expand...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C33/04C23G1/08B21B1/22B21B37/56
CPCC22C38/02C22C38/04C22C38/06C22C33/04C23G1/08B21B1/22B21B37/56C21D2211/005B21B2001/225B21B2265/10B21B2267/19
Inventor 贾幼庆赵云龙赵勇李有河彭正波李轶伦
Owner MAANSHAN IRON & STEEL CO LTD
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