Calibration Layer for Ceramic Walling Block Dimensional Accuracy
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Solution Overview
Problem
Ceramic walling blocks face challenges in maintaining accurate dimensions due to material shrinkage during baking and drying, leading to dimensional deviations between batches, which complicates the construction process and increases costs, especially when trying to achieve precise calibration of facing surfaces.
Innovation Solution
A precision ceramic walling block design where the external dimensions of the facing surfaces are calibrated after drying and firing with a calibration layer, using materials like lime-cement or gypsum, allowing for a thickness variation of 0.1 mm to 25 mm to achieve calibrated dimensions, suitable for both facade and room sides, and applied in a way that prevents burrs and is cost-effective for production lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ceramic walling blocks are used without machining, then manufacturing costs are lower and production is simpler, but dimensional accuracy deteriorates due to shrinkage during baking and drying
Solution Approach 1:
The patent applies a calibration layer to the facing surfaces of ceramic walling blocks after drying and firing but before final assembly. This preliminary calibration compensates for dimensional deviations caused by shrinkage during baking, allowing accurate dimensions to be achieved without expensive machining operations. The calibration layer is applied in advance to correct dimensional inaccuracies before the blocks are put into service.
2Manufacturing precision
If machining is performed on facing surfaces to achieve dimensional accuracy, then manufacturing precision improves, but production costs and energy consumption increase
Solution Approach 1:
Instead of using expensive and time-consuming machining operations to achieve dimensional accuracy on facing surfaces, the patent employs a calibration layer made of relatively inexpensive materials such as lime-cement or gypsum. This calibration layer can be applied quickly and economically, providing the necessary dimensional correction without the high costs and reduced productivity associated with machining ceramic blocks.
3Manufacturing precision
If a calibration layer is applied to facing surfaces, then dimensional accuracy improves, but the block structure becomes more complex
Solution Approach 1:
The patent creates a composite structure by applying a calibration layer made of different materials (such as lime-cement or gypsum) onto the ceramic walling block. This composite approach allows the ceramic block to retain its structural integrity while the added calibration layer provides the necessary dimensional accuracy on facing surfaces. The combination of ceramic substrate and calibration layer coating achieves precise dimensions without complicating the fundamental block structure.
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 inexpensive and efficient dimensional calibration of ceramic walling blocks, enabling thin-layer plastering post-construction, reducing material costs and simplifying the construction process while maintaining dimensional accuracy across batches.
Implementation Method 1
the calibration of the external dimensions on the facing surfaces of the blocks is achieved supplementally after drying and firing by applying a calibration layer whose thickness on each point of the surface of the calibration layer corresponds to the value Δt i =L v -L ji
Data Source
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AI summary
The invention relates to the dimensional calibration of a precision walling block (1), preferably a ceramic block (1), that has two machined opposite loading surfaces (2, 2'), two opposite contact surfaces (3, 3'), and two opposite facing surfaces (4, 4'). For calibrating the dimensions of blocks (1) and for compensating manufacturing dimensional deviations, onto at least one facing surface (4, 4') there is applied a calibration layer (5) of semi-rigid material (9) on a silicate base, preferably a lime-cement or other plaster which cures after coating. The thickness (Δti) of the calibration layer (5) is adjustable and corresponds to the difference between the final desired calibrated distance (Lv) and the nominal distance (Lji) of the surface of each block (1). The calibration is preferably executed using the applicator means (8) on a number of blocks (1) moving on a conveyor (6). After the calibration layer (5) has cured, the blocks (1) are dimensionally unified on their facing surfaces (4, 4') and only a thin layer of plaster is needed during the finishing work on the façade or on the interior plasters. The method of calibration according to the invention is inexpensive and suitable for line production of ceramic, concrete, porous concrete, foam silicate, aerated concrete, heat-insulated, and other blocks (1).