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Manufacture method of no-coating abrasion-proof corrosion-protection iron base tool

A manufacturing method and non-coating technology, which can be applied to coatings, dining table utensils, kitchen utensils, etc., can solve the problems of losing the effect of iron supplementation, and achieve the effects of fine grains, good wear resistance, and stable compounds

Inactive Publication Date: 2009-05-06
庞力 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter loses its iron-replenishing effect due to the coating of the ceramic layer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: manufacture iron spoon.

[0015] First, the low-carbon steel plate is cold-stamped and formed by a hydraulic press, and the stretching oil on the surface of the workpiece is removed. Put the molded workpiece into the nitrocarburizing furnace, and then pass the mixed gas of ammonia gas and endothermic atmosphere into the nitrocarburizing furnace, the ratio of the two gases is 50:50. Soft nitriding temperature is selected at 570°C for 4 hours. After finishing, put the workpiece into the bath furnace of molten oxide salt again, the temperature is 370°C, and the time is 20 minutes. After oxidation, the workpiece was taken out and cooled to room temperature. Then soak in a cooking oil bath for 10 minutes. Finally, clean, decorate, organize and pack the workpiece after composite treatment.

Embodiment 2

[0016] Embodiment 2: manufacture iron knife.

[0017] First, after the medium carbon steel plate is cold stamped and formed by a hydraulic press, the stretching oil on the surface of the workpiece is removed. Put the molded workpiece into the nitrocarburizing furnace, and then drop the mixture of triethanolamine and ethanol into the nitrocarburizing furnace. The temperature for nitrocarburizing is selected at 580°C for 3 hours. After finishing, put the workpiece into the bath furnace of molten oxide salt again, the temperature is 370°C, and the time is 20 minutes. After oxidation, the workpiece was taken out and cooled to room temperature. Then soak in a cooking oil bath for 10 minutes. Finally, clean, decorate, organize and pack the workpiece after composite treatment.

Embodiment 3

[0018] Embodiment 3: manufacture shovel.

[0019] First, after the medium carbon steel plate is cold stamped and formed by a hydraulic press, the stretching oil on the surface of the workpiece is removed. Put the molded workpiece into the salt bath furnace of molten nitride salt. The temperature for nitrocarburizing is selected at 575°C for 2 hours. After finishing, put the workpiece into the bath furnace of molten oxide salt again, the temperature is 370°C, and the time is 20 minutes. After oxidation, the workpiece was taken out and cooled to room temperature. Then soak in a cooking oil bath for 10 minutes. Finally, clean, decorate, organize and pack the workpiece after composite treatment.

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PUM

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Abstract

The invention relates to a manufacturing method of an uncoated anti-corrosive iron base appliance. The manufacturing method comprises the following steps: 1. cold punch molding is carried out; 2. the punch molded workpieces are nitrogenized and oxidized: gas soft nitrogenization and oxidization or liquid soft nitrogenization and oxidization are adopted to carry out complex chemical heat treatment on the molded workpieces so as to form three stable metal phase tissues, i.e., the outmost layer is a compound layer tissue consisting of epsilon-Fe2-3(C, N) and Fe3O4, and the inner layer is a diffusion layer tissue consisting of pearlite and highly dispersive nitride, while the inmost layer is a pearlite tissue; 3. the soft nitrogenized and oxidized workpieces are oil immersed; and 4. the complex chemical heat treated workpieces are cleaned, finished and trimmed. The manufacturing method has the advantages that: 1. the anti-corrosive performance of the iron base appliance is enhanced; 2. the hardness of the iron based material can reach 450 to 750HV, thus ensuring the abrasion resistance of the iron based appliance; and 3. the manufacturing cost is low.

Description

Technical field: [0001] The invention relates to a method for manufacturing daily necessities, in particular to a method for manufacturing uncoated wear-resistant and anti-corrosion iron-based utensils, such iron-based utensils include iron-based utensils, spoons, forks, knives, shovels and the like. Background technique: [0002] Iron-based materials, which have the characteristics of high temperature resistance, low cost, and easy processing, especially the daily utensils made of iron-based materials, such as iron-based utensils, spoons, forks, knives, shovels, etc., have the effect of iron supplementation, which is beneficial to the human body Health benefits. But these products are easy to rust and not resistant to corrosion. At present, in order to prevent rust and corrosion, people generally adopt the method of coating the outer surface of stainless steel or iron-based materials with an enamel layer to manufacture utensils, spoons, forks, knives, shovels and other pro...

Claims

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Application Information

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IPC IPC(8): A47G21/00B21D53/60C23C8/00C23C8/80
Inventor 庞力黄珍庞博昕
Owner 庞力