Method of manufacturing a pan and non-stick pan
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Solution Overview
Problem
Existing non-stick pans face issues with coating durability due to demoulding limitations in stamping processes, leading to large pattern sizes and environmental pollution from chemical etching, which affect anti-stick performance and production efficiency.
Innovation Solution
A method involving rolling a stainless-steel plate to form a concave and convex pattern, followed by punching, sandblasting, and polishing to create a non-stick pan with smaller rib widths and improved anti-stick effect, while avoiding demoulding difficulties and environmental pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If stamping process is used to form concave and convex pattern on pan body, then pattern can be formed on the pan surface, but the pattern size becomes relatively large due to demoulding problems and production efficiency decreases
Solution Approach 1:
The patent replaces the traditional stamping mechanical process with a spray coating process. Instead of mechanically stamping the anti-stick coating directly onto the pan body, the coating is sprayed onto the surface, allowing for better control of pattern size and shape without demoulding constraints. This substitution enables smaller, more precise pattern dimensions while maintaining high production efficiency through continuous spraying operation.
Solution Approach 2:
The patent applies preliminary action by first forming the concave and convex pattern structure on the pan body through stamping or other forming methods, then subsequently applying the anti-stick coating through spraying. This sequential approach allows the pattern structure to be established first, providing a template that guides the coating application, ensuring precise pattern size control without the limitations of direct stamping of the coating itself.
2Manufacturing precision
If chemical etching is used to process concave and convex pattern in pan body, then pattern can be formed, but the process becomes complicated, production cost increases and environmental pollution occurs
Solution Approach 1:
The patent replaces chemical etching with a mechanical spraying process. Instead of using chemical solutions to etch the anti-stick coating onto the pan body, a spraying apparatus mechanically deposits the coating material onto the patterned surface. This substitution eliminates the need for complex chemical processes, reduces environmental pollution from chemical waste, and simplifies the overall manufacturing process while maintaining precise pattern formation capability.
3Reliability
If anti-stick coating is applied on pan body to prevent food sticking, then anti-stick effect is achieved, but coating falls off due to heat and friction during use
Solution Approach 1:
The patent applies local quality by concentrating the anti-stick coating specifically in the concave portions of the patterned pan surface, while leaving the convex portions coating-free. This localized coating application ensures that the coating is placed only where it is most needed for preventing food sticking, while the exposed convex portions provide structural support and heat dissipation, preventing coating degradation and fall-off during use.
Solution Approach 2:
The patent segments the pan surface into concave and convex regions with distinct functions. The concave regions are coated with anti-stick material for food contact, while the convex regions remain exposed metal for structural integrity and heat distribution. This segmentation allows each region to perform its optimal function, with the coating protected by the convex structures that prevent direct mechanical stress and thermal degradation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enhances production efficiency, allows for smaller pattern sizes, improves anti-stick performance, and reduces environmental impact, resulting in a more competitive non-stick pan product.
Implementation Method 1
feeding the stainless-steel plate to a roller with a convex grain for rolling to form a pattern with a concave and convex structure on a side of the stainless-steel plate
Implementation Method 2
sandblasting part or all of the inner surface of the pan body, so as to form a rough surface on the inner surface of the pan body
Implementation Method 3
spraying the sandblasted surface in the pan body, so as to form an anti-stick coating on the inner surface of the pan body
Data Source
AI summary
A method of manufacturing a pan is disclosed. The method includes: preparing a roll of stainless-steel; feeding the stainless-steel plate into a roller for rolling to form a pattern on the stainless-steel plate, where the stainless-steel plate enters into the roller in a entering direction with an angle formed between the entering direction and the horizontal line, and the stainless-steel plate exits from the roller in a exiting direction with an angle formed between the entering direction and the horizontal line; punching a rolled stainless-steel plate to form a pan body; compounding a uniform heating layer and a heating layer on a bottom of the pan body in sequence; sandblasting an inner surface of the pan; spraying the inner surface of the pan; and polishing the inner surface of the pan body to remove the coating on the top surface of each of the ribs.