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Steel for motor turbine of roller washing machine and production method thereof

The technology of a drum washing machine and production method, which is applied in the field of metal material processing, can solve the problems of unfavorable cold-rolled sheet stamping and forming, r-value reduction, etc., and achieve the effects of eliminating the yield plateau, preventing Lüders bands, and reducing the outlet temperature

Active Publication Date: 2014-03-05
SHOUGANG CORPORATION
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  • Application Information

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Problems solved by technology

However, the performance requirements for cold-rolled, annealed, and stamping steels are relatively strict. It is required to maintain a certain strength while having good formability. Usually, the content of elements such as C and Mn is controlled to meet the requirements of increasing the strength of cold-rolled sheets, but the yield ratio ( The ratio of yield strength to tensile strength) increases, and the r value decreases, which is not conducive to the stamping of cold-rolled sheets

Method used

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  • Steel for motor turbine of roller washing machine and production method thereof
  • Steel for motor turbine of roller washing machine and production method thereof
  • Steel for motor turbine of roller washing machine and production method thereof

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Embodiment Construction

[0015] A kind of steel for drum washing machine motor turbine provided by the embodiment of the present invention, its chemical composition and mass percentage are: C, 0.04-0.05%; Mn, 0.10-0.25%; Si, ≤0.01%; P, ≤0.015%; S , ≤0.01%; Als, 0.03-0.05%, N, 0.0020-0.0040, the balance is Fe and unavoidable impurities.

[0016] The present invention also provides a method for producing steel for a drum washing machine motor turbine, comprising the following steps:

[0017] 1) Desulphurization, converter blowing, RH vacuum refining, and continuous casting of the steel with the chemical composition and mass percentage to obtain a continuous casting slab;

[0018] 2) Heating the obtained continuous casting slab to 1250±20°C for hot rolling, controlling the temperature during final rolling to 880±20°C, and coiling at a temperature of 600±20°C to obtain hot-rolled steel coils;

[0019] 3) The hot-rolled steel coil is uncoiled and pickled, then cold-rolled, and the cold-rolled reduction ra...

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Abstract

The invention provides steel for a motor turbine of a roller washing machine. The steel comprises the following chemical ingredients in percentage by mass: 0.04-0.05% of C, 0.10-0.25% of Mn, not higher than 0.01% of Si, not higher than 0.015% of P, not higher than 0.01% of S, 0.03-0.05% of Als, 0.0020-0.0040% of N and the balance of Fe and unavoidable impurities. According to a production method, process parameters are as follows: the hot-rolling heating temperature is 1,250+ / -20 DEG C, the final rolling temperature is 880+ / -20 DEG C, the coiling temperature is 600+ / -20 DEG C, the cold-rolling reduction ratio is controlled to be 75-80%, the annealing temperature is controlled to be 740+ / -10 DEG C, and the flat elongation percentage is 1.0%. The steel produced by the production method has certain yield strength, high elongation percentage and good forming property and can replace silicon steel through circuit transformation, so that considerable economic benefits are brought for household electrical appliance enterprises.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to steel for a drum washing machine motor turbine and a production method thereof. Background technique [0002] The drum washing machine originated in Europe. The washing method is designed to imitate the principle of hammering the clothes, including a stainless steel inner tub, a mechanical program controller, a triple-protected shell that has been phosphating, electrophoresis, and spraying, and two heavy cement blocks for balancing the drum. The huge centrifugal force generated during rotation makes repeated motions, and the joint action of washing powder and water makes the clothes clean. The materials used are mainly steel, and the service life is generally about 15-20 years. With the leap of science and technology, the washing machine industry has ushered in a new period of development. It is developing in the direction of more energy-saving, environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06C21D8/02
Inventor 程晓杰乔建军闻达孙建华蔡阿云任斌高贵银刘秀丽
Owner SHOUGANG CORPORATION
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