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 heat and friction, leading to contamination and inefficiencies in pattern formation methods like stamping and chemical etching, which are costly and environmentally harmful.
Innovation Solution
A method involving rolling a stainless-steel plate to form a concave and convex pattern, followed by sandblasting, coating, and polishing to create a non-stick pan with improved anti-stick effect and reduced environmental impact.
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 inner surface, but demoulding difficulty causes pattern size to be relatively large and production efficiency to be low
Solution Approach 1:
The patent replaces the traditional stamping mechanical process with a spray coating process. Instead of mechanically stamping the concave and convex pattern onto the pan body, the invention sprays anti-stick coating material onto the inner surface, allowing the coating to naturally form the desired pattern without demoulding constraints. This substitution eliminates the demoulding difficulty that limited pattern size and production efficiency in stamping processes.
Solution Approach 2:
The patent changes the fundamental parameter of pattern formation from mechanical deformation (stamping) to material deposition (spray coating). By controlling the spray parameters such as coating thickness, spray speed, and material viscosity, the desired concave and convex pattern is achieved without the geometric constraints of stamping molds, enabling both small pattern sizes and high production efficiency.
2Manufacturing precision
If chemical etching is used to process concave and convex pattern in pan body, then pattern can be formed, but process becomes complicated, production cost increases, and environmental pollution occurs
Solution Approach 1:
The patent replaces the chemical etching process with a physical spray coating process. Instead of using chemical reagents to etch the pattern into the pan body, the invention uses a spray device to deposit anti-stick coating material onto the inner surface. This physical process eliminates the need for harmful chemical materials, thereby preventing environmental pollution while still achieving the desired concave and convex pattern formation.
Solution Approach 2:
The patent converts the potential harm of chemical etching into a beneficial environmental solution by adopting spray coating technology. The spray process not only avoids environmental pollution but also simplifies the manufacturing process and reduces production costs, turning a harmful traditional method into a clean and efficient alternative.
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 affecting durability
Solution Approach 1:
The patent applies anti-stick coating selectively to specific regions of the pan body rather than uniformly coating the entire inner surface. By controlling the spray process, the coating is deposited primarily on the flat bottom surface where heat contact occurs, while leaving the sidewalls and rim areas partially or fully uncovered. This localized coating approach maintains excellent anti-stick performance where needed while reducing coating exposure to mechanical friction and thermal stress, thereby improving overall coating durability and preventing flaking.
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 rolling method enables high production efficiency, smaller pattern sizes, and enhanced anti-stick performance without environmental pollution, improving product competitiveness.
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
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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.