Stainless cooking utensil material, stainless cooking utensil and preparation method thereof

A technology for cooking utensils and stainless iron, which is applied to special materials for cooking utensils, metal material coating process, kitchen utensils, etc., can solve the problems of perforation of the pot body, formation of blisters, easy occurrence of blisters and perforations, etc., to reduce acid corrosion. and scratch wear, reduce the formation of trachoma and perforation, reduce the effect of trachoma and perforation

Pending Publication Date: 2019-01-04
武汉安在厨具有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the nitrogen-treated real stainless pans on the market have poor acid resistance, and are not resistant to acidic foods with a pH value less than 7, such as vinegar and sauerkraut, during cooking.
During use, the part of the inner surface of the pot that is in contact with food is prone to pitting corrosion to form sand holes, which eventually leads to perforation of the pot body
Moreover, at present, the surface structure of the base material before nitriding of iron pans cannot be uniform, and there will always be some defects, which makes the current true stainless pans more prone to blisters and perforations during use.

Method used

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  • Stainless cooking utensil material, stainless cooking utensil and preparation method thereof
  • Stainless cooking utensil material, stainless cooking utensil and preparation method thereof
  • Stainless cooking utensil material, stainless cooking utensil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Sand blast the inner surface of the pot base made of steel to increase the roughness of the inner surface of the pot, Ra is 10um; use thermal spraying method to coat a layer of 200um titanium and / or The titanium alloy layer is thermal sprayed by electric arc thermal spraying; the surface of the titanium or titanium alloy layer obtained by thermal spraying is polished to reduce the surface roughness of the pot body.

[0078] Carry out nitriding treatment on the pot body, the nitriding method is carried out according to the gas nitriding method, the method is as follows: use the well-type resistance furnace to process, place the product pot mouth downward on the special nitriding fixture, hoist it into the well-type nitriding furnace, Cover the furnace cover; vacuumize the nitriding furnace to a vacuum degree of 0.02MPa, then feed ammonia gas to make the pressure in the furnace reach a positive pressure of 0.001MPa, and keep feeding ammonia gas continuously, and the gas ex...

Embodiment 2

[0082] Sand blast the inner surface of the pot base made of steel to increase the roughness of the inner surface of the pot, and the Ra is 8um; use a thermal spraying method to coat a layer of 160um titanium and / or The titanium alloy layer is thermal sprayed by electric arc thermal spraying; the surface of the titanium or titanium alloy layer obtained by thermal spraying is polished to reduce the surface roughness of the pot body.

[0083] Carry out nitriding treatment on the pot body, the nitriding method is carried out according to the gas nitriding method, the method is as follows: use the well-type resistance furnace to process, place the product pot mouth downward on the special nitriding fixture, hoist it into the well-type nitriding furnace, Cover the furnace cover; vacuumize the nitriding furnace to a vacuum degree of 0.03MPa, then feed ammonia gas to make the pressure in the furnace reach a positive pressure of 0.001MPa, and keep feeding ammonia gas continuously, and t...

Embodiment 3

[0087] The inner surface of the pot base made of cast iron is sandblasted to increase the roughness of the inner surface of the pot, and the Ra is 6um; the inner surface of the pot is coated with a layer of 120um titanium and / or titanium alloy layer, flame thermal spraying is used for thermal spraying; the surface of the titanium or titanium alloy layer obtained by thermal spraying is polished to reduce the surface roughness of the pot body.

[0088] Carry out nitriding treatment on the pot body, the nitriding method is carried out according to the gas nitriding method, the method is as follows: use the well-type resistance furnace to process, place the product pot mouth downward on the special nitriding fixture, hoist it into the well-type nitriding furnace, Cover the furnace cover; vacuumize the nitriding furnace to a vacuum degree of 0.04MPa, then feed ammonia gas to make the pressure in the furnace reach a positive pressure of 0.002MPa, and keep feeding ammonia gas contin...

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Abstract

The invention belongs to the technical field of pot body preparation, in particular to a stainless cooking utensil material, comprising a substrate, wherein the first surface of the substrate is an iron substrate; the first surface of the substrate is provided with a dense protective layer and a protective layer of a titanium compound, and the dense protective layer is located between the substrate and the protective layer. The method for preparing a stainless cooking utensil comprises nitriding a substrate provided with a titanium layer and / or a titanium alloy layer on an inner surface of a pot to obtain a protective layer and a dense protective layer which are laminated in sequence on the inner surface of the pot. The prepared stainless cooking utensil material improves the acid resistance of the nitriding true stainless pot, reduces the problems of sand holes and perforations in the use of the nitriding pot, and reduces the influence of the surface microstructure defects of the substrate on the performance of the iron pot.

Description

technical field [0001] The invention relates to the technical field of pot body preparation, in particular to a stainless cookware material, a stainless cookware and a preparation method thereof. Background technique [0002] At present, there is a kind of real stainless pan with nitriding treatment on the market. This type of iron pan is formed by cold stamping of low carbon steel plate or cast iron. After the inner and outer surfaces are polished, nitriding and oxidation treatment are used to prevent corrosion rust. [0003] However, the nitrogen-treated true stainless pans on the market have poor acid resistance, and are not resistant to acidic foods with a pH value of less than 7, such as vinegar and sauerkraut, during cooking. During use, pitting corrosion is prone to occur on the part of the inner surface of the pot that is in contact with food, forming trachoma, which eventually leads to perforation of the pot body. Moreover, at present, the surface structure of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J36/02A47J27/00C23C4/02C23C4/08
CPCA47J36/02A47J27/00C23C4/02C23C4/08
Inventor 黄恩点
Owner 武汉安在厨具有限公司
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