Production technique for pans

Abstract

The invention relates to a production technique for pans. The production technique at least includes the following steps that: (1) a pan body is prepared, and a positioning pin is spot-welded on the bottom of the pan body; (2) the inner surface of the pan body going through step 1 receives special surface treatment; (3) an inner composite bottom plate with a positioning hole is prepared, and the position and size of the positioning hole correspond to the position and size of the positioning pin; (4) an outer composite bottom plate is prepared and assembled on the inner composite bottom plate prepared in step 3 to form an inner-outer composite bottom plate assembly; (5) a repeated hot forging method is adopted to combine the pan body going through step 2 and the inner-outer composite bottom plate assembly obtained in step 4 together. The invention meets the requirement of the production technique on positioning, and also prevents the inner special-treated layer of the pan body from being damaged. The invention has the advantages of simple process and low cost, and therefore is more suitable for production in batches, and the invention thoroughly solves the problem of high defectiveproduct rate in the prior art, and increases the product quality.

Description

technical field [0001] The production process relates to a production method of kitchen cookware, more specifically, it is a production process of a pot. Especially for cookware products with brazing or hot forging and pressing design process requirements, and special treatment process requirements on the surface of the workpiece (for example: frying pan with double bottom layer). Background technique [0002] At present, there are many pots with composite bottoms on the market, which can solve the problem of uneven heating of the pot body. Most of the existing composite bottom pans are processed by brazing or hot forging and re-hitting techniques, such as Chinese patent authorization announcement number CN100459911C, which discloses a composite pan bottom by brazing and integral pressure welding. However, in the actual manufacturing process, due to consideration of the requirements for the production process positioning of the composite bottom sheet, the pot body and the c...

AI Technical Summary

Problems solved by technology

However, in the actual manufacturing process, due to consideration of the requirements for the production process positioning of the composite bottom sheet, the pot body and the composite bottom sheet are used for process positioning by spot welding before brazing or hot forging, so as to prevent the The relative position between the composite materials in the center makes the positioning inaccurate

However, for products that require special surface treatment on the inner surface of the pot body before spot welding, and cannot be subjected to such surface treatment after brazing or hot forging, if this process is used, the spot welding process will Serious damage to the surface treatment layer (including anti-rust layer, non-stick pan layer, etc.) high

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