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Austenitic stainless steel suitable for producing beer kegs, its manufacturing method and application

A technology of austenitic stainless steel and manufacturing method, applied in 304 austenitic stainless steel, austenitic stainless steel and its manufacturing field, can solve the problems of poor tensile properties, frequent cracking, surface color difference, etc., and achieve pollution-free stainless steel. Good elongation, good surface gloss and excellent tensile properties

Active Publication Date: 2017-11-14
ZHANGJIAGANG POHANG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, the beer kegs demanded by the international market were made of plastic, glass and other materials. Due to the many disadvantages of plastic and glass beer kegs in terms of food safety, service life, and transportation safety, they could not meet the needs of customers more and more. Many customers began to use ordinary kegs. Stainless Steel Production Beer Kegs
When ordinary stainless steel is used to produce beer barrels, due to poor tensile properties, more cracks occur; and because the surface needs special treatment of pickling and passivation (that is, pickling and passivation after stretching and welding, but no polishing , wire drawing, polishing, etc.), there will be color difference on the surface if the treatment is not good; thus it cannot meet the requirements of pickling and passivation treatment

Method used

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  • Austenitic stainless steel suitable for producing beer kegs, its manufacturing method and application
  • Austenitic stainless steel suitable for producing beer kegs, its manufacturing method and application
  • Austenitic stainless steel suitable for producing beer kegs, its manufacturing method and application

Examples

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Embodiment 1

[0038] This embodiment provides an austenitic stainless steel suitable for producing beer kegs. Based on the total weight of the austenitic stainless steel, its raw material composition includes: carbon 0.04%, silicon 0.6%, manganese 1.11%, phosphorus 0.045% % or less, sulfur 0.030% or less, chromium 18.0%, nickel 8.01%, copper 0.5% and iron balance.

[0039] The austenitic stainless steel is produced by the following method: making steel from the raw materials of the austenitic stainless steel, and then performing hot rolling, hot rolling annealing pickling, cold rolling, and cold rolling annealing of the obtained raw material blanks in sequence pickling, leveling and finishing, to obtain the austenitic stainless steel suitable for producing beer kegs;

[0040] Among them, after steel making, the steel making head billet, tail billet and mixed billet are removed, and the middle part billet is used as the raw material billet for hot rolling;

[0041] Hot-rolling annealing is ...

Embodiment 2

[0051] This embodiment provides an austenitic stainless steel suitable for producing beer kegs. Based on the total weight of the austenitic stainless steel, its raw material composition includes: carbon 0.045%, silicon 0.65%, manganese 1.18%, phosphorus 0.045% % or less, sulfur 0.030% or less, chromium 18.5%, nickel 8.1%, copper 0.5% and iron balance.

[0052] The manufacturing method of this austenitic stainless steel is basically the same as that of Example 1, the difference lies in the step of cold rolling and annealing, what this embodiment prepares is a plate with a thickness of 1.5mm, and the cold rolling of a stainless steel plate with a thickness of 1.5mm for conventional RZ4 purposes The annealing temperature is 1180°C, which is reduced to 1160°C in this embodiment, and is divided into 10 intervals for continuous annealing:

[0053] The temperature in the first preheating zone is 950°C, the temperature in the second preheating zone is 990°C, the temperature in the thi...

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Abstract

The invention provides austenitic stainless steel applicable to production of beer barrels and a manufacturing method and application thereof. With the total weight as the standard, the austenitic stainless steel comprises, by weight, less than 0.08% of carbon, less than 1.0% of silicon, less than 2% of manganese, less than 0.045% of phosphorus, less than 0.030% of sulfur, 18-20% of chromium, 8.0-10.5% of nickel, 0.4-1.0% of copper, and the balance iron. According to the manufacturing method of the stainless steel, an intermediate blank with excellent surface quality and low inclusion content is used as a raw material blank, and the tensile property of a product can be enhanced. Thick packing paper of 45 g / m2 is adopted in the coiling process in a cold rolling step, and the surface effect of acid pickling and passivating can be improved. In addition, in the cold rolling and annealing process, the annealing temperature is decreased by 20 DEG C, color difference can be eliminated, and the acid pickling and passivating effect is improved. Accordingly, the manufactured austenitic stainless steel (a plate strip) is especially suitable for production of the beer barrels.

Description

technical field [0001] The invention relates to a 304 austenitic stainless steel, in particular to an austenitic stainless steel suitable for producing beer kegs and its manufacturing method and application, belonging to the technical field of stainless steel smelting. Background technique [0002] Austenitic stainless steel represented by SUS304 has excellent comprehensive properties such as corrosion resistance, heat resistance, and machinability. This product has a wide range of uses and occupies a high market share in stainless steel products. With the improvement of people's living standards, customers' demand for stainless steel is no longer limited to the 304 austenitic ordinary 2B surface used in construction, decoration, food hygiene, electronics and other industries (that is, stainless steel is cold-rolled and then heat-treated, pickled, and then processed. The surface of smooth rolling is silvery white with better gloss, and the surface state is oil surface), 2D s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C22C38/42C22C38/02C21D8/02
CPCC21D6/004C21D8/0226C21D8/0236C21D8/0242C21D8/0247C21D2211/001C22C38/02C22C38/42C22C38/58
Inventor 谢红伟
Owner ZHANGJIAGANG POHANG STAINLESS STEEL