A kind of austenitic stainless steel for preparing sporks and its manufacturing method and application

An austenitic stainless steel and manufacturing method technology, applied in the field of stainless steel, can solve the problems of limited production efficiency in the polishing process, prone to center delamination, and increased production costs, so as to save annealing and pickling operations, low grinding and polishing costs, The effect of high grinding processing efficiency

Active Publication Date: 2021-04-27
ZHANGJIAGANG POHANG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The production process of stainless steel forks and spoons is mainly the process of stretching and stamping. The machining deformation in the production process can easily lead to martensitic phase transformation, so that the austenite structure of the original stainless steel is partially transformed into martensite structure, and cracked greater risk;
[0005] 2) Thicker austenitic plates (>5mm) are prone to central delamination during stamping and shearing;
[0006] 3) The polishing of stainless steel fork and spoon is a very important process in its manufacturing process. Polishing can improve the appearance of the product and directly determine the quality and added value of the finished product. However, the complicated and cumbersome polishing process of stainless steel fork and spoon not only limits the production efficiency, It increases the production cost and brings additional environmental protection pressure. Therefore, how to improve the grinding and polishing performance of austenitic stainless steel forks and spoons is the focus of the entire industry

Method used

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  • A kind of austenitic stainless steel for preparing sporks and its manufacturing method and application
  • A kind of austenitic stainless steel for preparing sporks and its manufacturing method and application

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Experimental program
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Embodiment 1

[0051] This embodiment provides a kind of manufacturing method for the austenitic stainless steel that is used to prepare spork and spoon, such as figure 1 As shown, the manufacturing method includes:

[0052] Furnace material: The raw material composition of the furnace used is: C: 0.05%, Si: 0.5%, Mn: 1.1%, P: 0.035%, S: 0.03%, Cr: 18.2%, Ni: 8.1%, Cu: 0.15%, N: 0.04%, and the balance of Fe; Md30: 7.32 ℃;

[0053]Refining: Feed the charge into the electric furnace for heating and then refining;

[0054] Continuous casting, the refined charge is continuously cast, wherein the molten steel flow rate is controlled to 2.5 tons / min through the stopper rod, the insertion depth of the nozzle is 120mm, and then the crystallizer liquid level fluctuation MLAC is controlled to 100%; the solidification end uses continuous casting light Reduction technology, the total reduction of continuous casting light pressure at the end of solidification is 3mm;

[0055] Continuous casting, heati...

Embodiment 2

[0062] This embodiment provides a method for manufacturing an austenitic stainless steel for preparing a spork, the manufacturing method comprising:

[0063] Furnace material: The raw material composition of the furnace used is: C: 0.06%, Si: 0.4%, Mn: 1.1%, P: 0.035%, S: 0.03%, Cr: 18.2%, Ni: 8.03%, Cu: 0.35%, N: 0.045%, and the rest of Fe; Md30: -4°C;

[0064] Refining: Feed the charge into the electric furnace for heating and then refining;

[0065] Continuous casting, heating, rough rolling, finishing rolling (including layer cooling and coiling), and annealing are performed sequentially on the refined charge;

[0066] Continuous casting, the refined charge is continuously cast, wherein the molten steel flow rate is controlled to 2.7 tons / min through the stopper rod, the insertion depth of the nozzle is 130mm, and the crystallizer liquid level fluctuation MLAC is controlled to 100%; the solidification end is controlled by continuous casting light Reduction technology, th...

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Abstract

The invention provides an austenitic stainless steel used for preparing sporks and spoons, a manufacturing method and application thereof. The manufacturing method includes: refining, the Md30 of the furnace material used is below 10°C; continuous casting, the flow rate of molten steel is 2.4 tons / minute-2.9 tons / minute, the insertion depth of the nozzle is 110mm-140mm, and the total amount of continuous casting light pressing at the solidification end Reduction ≤ 3.5mm; heating, rough rolling, finish rolling, annealing; shot blasting, among which light shot blasting mode is used; pickling, pickling adopts the mode of heavy brushing first and then nylon brushing; coils obtained after polishing , that is, the manufacture of austenitic stainless steel for the preparation of sporks and spoons is completed. The present invention also provides the austenitic stainless steel for preparing sporks and spoons prepared by the above manufacturing method and the sporks and sporks made of the austenitic stainless steel.

Description

technical field [0001] The invention relates to an austenitic stainless steel, in particular to an austenitic stainless steel used for preparing forks and spoons, and belongs to the technical field of stainless steel. Background technique [0002] Austenitic stainless steel not only has good mechanical properties and processing formability, but also has excellent acid, alkali and salt corrosion resistance. Tableware made of stainless steel has a long service life, is beautiful and tidy, and is easy to clean. Austenitic stainless steel has surpassed It is more and more used in the tableware manufacturing industry and is loved by consumers. [0003] At present, the main problems faced in the manufacturing process of austenitic stainless steel forks and spoons include: [0004] 1) The production process of stainless steel forks and spoons is mainly the process of stretching and stamping. The machining deformation in the production process can easily lead to martensitic phase t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/42C22C38/04C22C38/02C22C33/04B22D11/16C23G3/00A47G21/02
CPCA47G21/02B22D11/16C22C33/04C22C38/001C22C38/002C22C38/02C22C38/04C22C38/42C23G3/00
Inventor 林鸿亮季艳娇荣青亮
Owner ZHANGJIAGANG POHANG STAINLESS STEEL
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