Surface treatment process for coating-free carbon steel frying pan with non-staining performance, perforation resistance and high thermal conductivity

A high thermal conductivity, surface treatment technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve problems such as perforation, improve resistance to uniform and pitting corrosion, dense and uniform nitride film, The effect of uniform residual stress distribution

Active Publication Date: 2021-03-09
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a non-stick, perforation-resistant and high thermal conductivity non-coated carbon steel wok surface treatment process, in order to overcome the problems of non-coated carbon steel wok perforation, improve the non-coated carbon steel wok Pan nonstick and thermal conductivity

Method used

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  • Surface treatment process for coating-free carbon steel frying pan with non-staining performance, perforation resistance and high thermal conductivity
  • Surface treatment process for coating-free carbon steel frying pan with non-staining performance, perforation resistance and high thermal conductivity
  • Surface treatment process for coating-free carbon steel frying pan with non-staining performance, perforation resistance and high thermal conductivity

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Effect test

Embodiment 1

[0045] In this embodiment, the non-stick, perforation-resistant and high thermal conductivity non-coated carbon steel wok surface treatment process, its process steps are as follows:

[0046] Step S1: After the original carbon steel wok blank is stamped and formed, use a neutral cleaning agent to clean the oil stain on the surface of the carbon steel wok, dry the carbon steel wok after cleaning the oil, and perform surface derusting treatment on the dried carbon steel wok 6 minutes.

[0047] Step S2: Sand blast the surface of the carbon steel wok for 6 minutes, and remove the attachments on the surface of the carbon steel wok after sandblasting.

[0048] Step S3: Put the carbon steel frying pan in the nitriding furnace, NH 3 The gas is directly input into the nitriding furnace at 590°C, NH 3 The air pressure is 0.95MPa, and after keeping for 8 hours, the carbon steel frying pan is removed from the nitriding furnace and air-cooled to room temperature, and the surface of the n...

Embodiment 2

[0055] In this embodiment, the non-stick, perforation-resistant and high thermal conductivity non-coated carbon steel wok surface treatment process, its process steps are as follows:

[0056] Step S1: After the original carbon steel wok blank is stamped and formed, use a neutral cleaning agent to clean the oil stain on the surface of the carbon steel wok, dry the carbon steel wok after cleaning the oil, and perform surface derusting treatment on the dried carbon steel wok 3 minutes.

[0057] Step S2: Sand blast the surface of the carbon steel wok for 4 minutes, and remove the attachments on the surface of the carbon steel wok after sandblasting.

[0058] Step S3: Put the carbon steel frying pan in the nitriding furnace, NH 3 The gas is directly fed into the nitriding furnace at 550°C, NH 3 The air pressure is 1.1 MPa, and after maintaining for 6 hours, the carbon steel frying pan is removed from the nitriding furnace and air-cooled to room temperature, and the surface of the...

Embodiment 3

[0065] In this embodiment, the non-stick, perforation-resistant and high thermal conductivity non-coated carbon steel wok surface treatment process, its process steps are as follows:

[0066] Step S1: After the original carbon steel wok blank is stamped and formed, use a neutral cleaning agent to clean the oil stain on the surface of the carbon steel wok, dry the carbon steel wok after cleaning the oil, and perform surface derusting treatment on the dried carbon steel wok 9 minutes.

[0067] Step S2: Sand blast the surface of the carbon steel wok for 8 minutes, and remove the attachments on the surface of the carbon steel wok after sandblasting.

[0068] Step S3: Put the carbon steel frying pan in the nitriding furnace, NH 3 The gas is directly input into the nitriding furnace at 600℃, NH 3 The air pressure is 1.25MPa, and after keeping for 10 hours, the carbon steel wok is removed from the nitriding furnace and air-cooled to room temperature, and the surface of the nitrided...

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Abstract

The invention relates to the field of surface treatment of iron pans, in particular to a surface treatment process for a coating-free carbon steel frying pan with non-staining performance, perforationresistance and high thermal conductivity. The surface treatment process comprises the following steps: step S1, carrying out deoiling and cleaning on an original carbon steel frying pan blank and carrying out derusting on the surface of the original carbon steel frying pan blank; step S2, performing sand blasting on the surface of the carbon steel frying pan; step S3, nitriding the surface of thecarbon steel frying pan by gas to form a compact nitriding layer on the surface of the carbon steel frying pan; step S4, performing chemical treatment on the surface of the nitriding layer of the carbon steel frying pan by using a mixed aqueous solution; step S5, performing oxidation treatment on the surface of the carbon steel frying pan on the basis of the nitriding layer of the carbon steel frying pan; step S6, performing chemical treatment on the oxidized surface of the carbon steel frying pan by using the mixed aqueous solution; step S7, polishing the surface of an oxidation layer of thecarbon steel frying pan; and step S8, performing chemical treatment on the surface of the carbon steel frying pan by using the mixed aqueous solution after the surface of the oxidation layer is polished. According to the surface treatment process, the problems of perforation and the like of the coating-free carbon steel frying pan can be solved, and the non-staining performance and the thermal conductivity of the coating-free carbon steel frying pan are improved.

Description

technical field [0001] The invention relates to the field of surface treatment of iron pans, in particular to a surface treatment process of an uncoated carbon steel wok with non-stick properties, perforation resistance and high thermal conductivity. Background technique [0002] The carbon steel frying pan used for cooking food generally adopts surface nitriding and oxidation technology or surface coating Teflon (Teflon) coating technology at present. However, the uncoated iron pan processed by nitriding and oxidation technology can improve the uniform corrosion resistance, but it is still easy to perforate (pitting corrosion), and it is easy to stick to the pan during cooking food, which affects the nutrition of food and increases the difficulty of cleaning the iron pan . Although the Teflon-coated carbon steel frying pan has good non-stick performance, the Teflon coating is easy to fall off during cooking and cleaning the iron pan, which will reduce the non-stick perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/26C23C22/62C23C22/73C23C22/82C23G1/24
CPCC23C8/26C23C22/62C23C22/73C23C22/82C23G1/24
Inventor 王胜刚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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