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Manufacturing method of cast pot

A manufacturing method and technology for pots and pans, which are applied in the field of casting pots and pans, can solve the problems of high cost, easy falling off or decomposition of repairing agent, unsuitable repairing agent, etc.

Inactive Publication Date: 2018-12-11
JOYOUNG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two ways to deal with hole defects. One is to directly return to the furnace for recasting. This method leads to low production capacity and high cost of casting pots, and it cannot ensure that the recast pot blanks will not have hole defects; Another treatment method is to use a cement-like, room-temperature-curing polymer resin repair agent for repair, but the temperature resistance of this repair agent is about 170°C, and the temperature of the hot oil of the pot is about 200°C. The lower repair agent is easy to fall off or decompose, so the repair agent is not suitable for repairing holes in casting woks

Method used

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  • Manufacturing method of cast pot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 2 , which is a schematic diagram of the manufacturing process of the first embodiment of the method for manufacturing a cast pot according to the present invention. It includes the step of forming the pot billet, polishing and selecting the step, repairing the hole and welding the step, removing the flattening step of the welding spot, and the surface treatment step. Wherein, the pan blank forming step is to use metal casting to form the pan base, and the formed pan base already has the basic shape of the pot, such as a curved pot or a frying pan. The pot base has an inner surface and an outer surface, the inner surface is the side forming the cooking chamber for accommodating food, and the inner surface is opposite to the outer surface. The billet forming step mainly includes smelting and billet casting, and the billet forming process is an existing technology in the field, and will not be repeated here.

[0039] can also refer to Figure 5, the followin...

Embodiment 2

[0044] see image 3 , which is a schematic diagram of the manufacturing process of the second embodiment of the method for manufacturing a cast pot according to the present invention. It differs from Example 1 mainly in that the surface treatment step includes oxidation blackening treatment and oil film coating treatment. The oxidation blackening treatment specifically includes: keeping the pot substrate and water vapor at 510-600° C. for 60-90 minutes to form an oxide layer. A layer of dense ferric oxide oxide layer is formed on the surface of the pot base to isolate the air and achieve the purpose of rust prevention; by setting the oxide layer, it can also protect the pot base and solder joints, and increase the corrosion resistance and strength of the pot. At the same time, it can achieve non-stick effect. The thickness of the oxide layer is preferably 1-3um. If the thickness of the oxide layer is too thick, it will easily delaminate and fall off, if it is too thin, the ...

Embodiment 3

[0046] see Figure 4 , which is a schematic diagram of the manufacturing process of the third embodiment of the method for manufacturing a cast pot according to the present invention. It differs from Embodiment 1 mainly in that the surface treatment steps include soft nitriding treatment, oxidation blackening treatment and oil film coating treatment. Please also refer to Figure 8 , soft nitriding treatment to form a nitride layer 3, the thickness of the nitride layer 3 is 10-50um. The nitrocarburizing treatment is to heat to 450-650°C in a heat treatment furnace under the gas medium atmosphere formed by ammonia and carbon dioxide, and keep it warm for 2-4 hours. The nitride layer 3 includes a diffusion layer 31 and a whitening layer 32 sequentially formed from the inner surface and / or the outer surface of the casting pot. Active nitrogen atoms and carbon atoms produced by ammonia and carbon dioxide through thermal decomposition and other chemical reactions penetrate into t...

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Abstract

The invention provides a manufacturing method of a cast pot. The manufacturing method comprises the steps of pot blank forming, polishing and selecting, hole repair welding, welding spot flattening, surface treatment and the like, hole defects are eliminated, the performance of the pot is enhanced, and particularly, the anti-rust capability is greatly improved. Meanwhile, holes are repaired through repair welding, the production efficiency of the cast pot is improved, and the cost is reduced. The holes are subjected to repair welding and plugging, the problem that cast pots with the hole defects cannot be subjected to tufftriding and other subsequent treatment is solved. According to the technical scheme, the hole defect repair effect is good, and the pot is good in overall performance andlong in service life.

Description

technical field [0001] The invention relates to the technical field of kitchen appliances, in particular to a method for manufacturing a cast pan. Background technique [0002] Cast pots transfer heat evenly, and are especially suitable for cooking methods such as frying, frying, deep-frying, and stewing, and are commonly used cooking utensils in daily life. Casting pots are cast from metal liquid into molds. After cooling and shaping, they are demolded to form pans, and then the pans are processed to form finished pans. Casting pots are most prone to hole defects, which account for more than 60% of casting defects. The so-called hole defects mainly include pores, trachoma, ballast, shrinkage cavity, shrinkage porosity, and iron beans. The existence of hole defects will affect the anti-corrosion performance, mechanical properties and appearance of the product, so they need to be eliminated. [0003] At present, there are two ways to deal with hole defects. One is to direc...

Claims

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Application Information

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IPC IPC(8): A47J27/00C23C10/16
CPCA47J27/002C23C10/16
Inventor 朱泽春李红亮
Owner JOYOUNG CO LTD