Method for producing a metal plate having an embedded temperature sensor and metal plate produced thereby
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Solution Overview
Problem
The existing methods for embedding temperature sensors in metal plates during rolling or deep-drawing processes face challenges such as damage from high temperatures, complex and expensive recess creation, and unsuitable insulation, leading to issues with wire flexibility and visual appearance in kitchen vessels.
Innovation Solution
A protective tube is rolled into the metal plate during production, allowing a temperature sensor to be inserted later, eliminating the need for pre-made recesses and ensuring the sensor's wires are flexible and insulated, thus enabling seamless integration and deformation without compromising the vessel's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a ceramic body temperature sensor with pronounced measuring head is embedded in the metal plate, then temperature measurement is achieved, but the rolling process becomes complicated and expensive due to the need for recesses
Solution Approach 1:
The invention extracts the temperature sensor from its traditional ceramic housing with pronounced measuring head and repositions it within the rolling direction of the metal plate. The sensor is oriented perpendicular to the plate surface with the measuring head facing upward, eliminating the need for recesses during rolling while maintaining measurement functionality.
Solution Approach 2:
The temperature sensor is reoriented from a horizontal configuration (requiring recesses) to a vertical configuration perpendicular to the plate surface. This dimensional change allows the sensor to be embedded without interfering with the rolling process, as the measuring head extends in the Z-direction rather than requiring lateral space.
2Reliability
If conventional plastic insulation is used on temperature sensor wires, then insulation is provided, but the wires cannot withstand the rolling and deep-drawing processes
Solution Approach 1:
The invention changes the insulation material parameter from conventional plastic to heat-resistant material that can withstand temperatures up to 380°C during rolling and the mechanical stresses during deep-drawing processes. This parameter change ensures the insulation remains intact throughout manufacturing.
Solution Approach 2:
The temperature sensor assembly uses composite construction with heat-resistant insulation material combining electrical insulation properties with high-temperature resistance. This composite approach allows the wires to withstand both thermal and mechanical conditions of the manufacturing processes.
3Stability of the object's composition
If the temperature sensor is firmly embedded in the metal plate, then stable positioning is achieved, but the connecting wires must undergo stretching during deep drawing which may cause breakage
Solution Approach 1:
The invention applies different embedding depths to different parts of the temperature sensor. The measuring head is embedded at a controlled depth while the connecting wires remain closer to the surface, allowing them to move more freely during deep-drawing processes. This localized quality differentiation protects wire strength while maintaining sensor stability.
4Ease of manufacture
If recesses are created in plate bodies for each ceramic body, then temperature sensors can be embedded, but the rolling process becomes expensive
Solution Approach 1:
The invention eliminates the recess creation step entirely by repositioning the temperature sensor to embed in the rolling direction. This extraction of the problematic recess requirement restores rolling process efficiency and productivity while maintaining ease of sensor embedding through the simplified orientation.
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
This method allows for the production of metal plates with embedded temperature sensors that can withstand rolling and deep-drawing processes, ensuring accurate temperature control without compromising the vessel's appearance or functionality.
Implementation Method 1
all plate bodies enter into a mutual diffusion connection in the region of their mutually contacting sides, so that all plate bodies are bonded to one another and to the protective tube over their entire surface
Data Source
Figure 1
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AI summary
The invention relates to a method for producing a metal plate having at least one embedded temperature sensor and to a metal plate produced by the method. The metal plate is produced from a plurality of layers or plate bodies, which are diffusion-connected to each other by thermal pre-treatment and subsequent rolling. A sheathed thermocouple (24) is rolled, as the temperature sensor, into the metal plate during the production of the metal plate, or a protective tube (21) made of metal is rolled into the metal plate, into which protective tube a sheathed thermocouple (24) can be inserted after the metal plate has been processed further to form a cooking vessel (22).