Friction Lining Bonding via Segmented Pressure and Temperature Control
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Solution Overview
Problem
Existing methods for bonding friction linings to carriers using adhesives are inefficient, as they often require high pressure and temperature conditions that are not optimally controlled, leading to inconsistent bonding and potential damage to the materials.
Innovation Solution
A method and tool that press the friction lining and carrier together with adhesive under controlled pressure and temperature conditions, allowing the adhesive to flow and distribute optimally before full bonding, with subsequent crosslinking at higher temperatures, ensuring strong and consistent attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high pressure and temperature are applied to develop full adhesive effect, then bonding strength is improved, but adhesive distribution and penetration before bonding deteriorates
Solution Approach 1:
The bonding process is divided into two distinct stages: a first bonding stage with lower pressure and temperature for optimal adhesive distribution and penetration, followed by a second bonding stage with higher pressure and temperature for developing full adhesive effect. This segmentation allows each stage to optimize for its specific function, resolving the contradiction between adhesive distribution and bonding strength.
Solution Approach 2:
The first bonding stage performs preliminary action by applying lower pressure and temperature to allow adhesive to flow and penetrate the friction lining before full bonding occurs. This preliminary adhesive distribution creates optimal conditions for the subsequent second bonding stage to achieve maximum bonding strength.
2Reliability
If high temperature is applied for prolonged exposure to develop full adhesive effect, then bonding durability is improved, but process time increases
Solution Approach 1:
The bonding process is segmented into two stages with different temperature and time parameters. The first stage uses lower temperature for a shorter duration to achieve adhesive distribution, while the second stage uses higher temperature for prolonged exposure to develop full adhesive effect. This segmentation optimizes both durability and process time by avoiding prolonged exposure at high temperature from the beginning.
Solution Approach 2:
The process utilizes parameter changes by varying temperature and pressure between two bonding stages. The first stage operates at lower temperature and pressure, then transitions to the second stage with higher temperature and pressure. This parameter change strategy achieves full adhesive effect and bonding durability while reducing total process time compared to single-stage high-temperature processing.
3Manufacturing precision
If adhesive is made to flow under pressure and temperature before full bonding, then adhesive penetration and distribution are improved, but bonding consistency deteriorates
Solution Approach 1:
The bonding process is segmented into two controlled stages: the first stage allows adhesive to flow and penetrate under controlled lower pressure and temperature, while the second stage ensures consistent full bonding under higher pressure and temperature. This segmentation maintains bonding consistency by providing controlled conditions for each stage rather than applying maximum conditions throughout.
Solution Approach 2:
Controlled parameter changes between stages ensure both adhesive penetration and bonding consistency. The first stage uses lower pressure and temperature to allow adhesive flow and penetration, then transitions to the second stage with higher pressure and temperature to achieve consistent full bonding. This controlled parameter progression prevents bonding inconsistencies that would result from uncontrolled variable conditions.
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 approach enhances the bonding process by ensuring the adhesive develops its full effect only after initial attachment, resulting in improved durability and resistance to thermal stress, particularly suitable for clutch friction linings and carrier plates.
Implementation Method 1
the adhesive is made to flow under the influence of pressure and/or temperature before the adhesive develops its full adhesive effect
Implementation Method 2
The flowing adhesive particularly advantageously penetrates partially into the preferably porous friction lining
Implementation Method 3
The crosslinking or curing of the adhesive only takes place after the bonding process at a significantly higher temperature over a longer period of time
Implementation Method 4
The crosslinking or curing of the adhesive only takes place after the bonding process at a significantly higher temperature over a longer period of time
Implementation Method 5
A heating platen is mounted in the tool plate that is in contact with the carrier to bring the necessary temperature into the tool to adhere the friction lining to the carrier
Data Source
Figure 1~2
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Figure 6~7
AI summary
The invention relates to a method for gluing a friction lining to a support by means of adhesive that develops its full adhesive effect under the effect of pressure and/or temperature. The invention is characterized in that the friction lining and the support are pressed together along with the adhesive before the adhesive develops its full adhesive effect in order to glue the friction lining to the support.