Composite Brazing Crucible Assembly for Heat and Wetting Stability
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Solution Overview
Problem
Existing brazing crucibles suffer from high defect rates and limited service life due to inadequate heat transfer and surface wetting stability, affecting soldering quality and reliability.
Innovation Solution
A brazing crucible composed of two parts: a base body made of a material with high specific heat capacity and a soldering part with good surface wettability, assembled in a press-fit inlaid structure to enhance heat transfer and wetting stability, while ensuring liquid solder sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-material brazing crucible is used, then the structure is simple and manufacturing cost is low, but heat transfer and surface wettability cannot be optimized simultaneously
Solution Approach 1:
The brazing crucible is divided into two distinct parts: a base body part made of material with high specific heat capacity (such as copper or aluminum alloy) and a soldering part made of material with excellent surface wettability (such as stainless steel or nickel alloy). This segmentation allows each part to independently optimize its function - the base body for heat storage and transfer, and the soldering part for liquid solder interaction - thereby resolving the contradiction between soldering quality and structural simplicity.
Solution Approach 2:
The invention employs composite material construction by combining materials with different thermal and surface properties in a single crucible structure. The base body uses high thermal conductivity materials while the soldering part uses materials with superior wetting characteristics, creating a composite system that achieves both efficient heat transfer and stable surface wettability, thus improving soldering quality without requiring complex external systems.
2Reliability
If the base body part and soldering part are made of different materials, then heat transfer and wettability are improved, but the manufacturing complexity increases
Solution Approach 1:
By segmenting the crucible into manufacturable modules (base body part and soldering part), each component can be produced using optimized processes for its specific material requirements. The base body can be cast or formed from high-conductivity materials while the soldering part can be separately manufactured from wettability-optimized materials, then assembled through press-fit or brazing connections, simplifying the overall manufacturing complexity despite using multiple materials.
3Strength
If the base body part and soldering part are assembled in press-fit inlaid structure, then structural stability and heat transfer are improved, but manufacturing precision requirements increase
Solution Approach 1:
The segmentation into modular base body and soldering part enables the use of press-fit inlaid structures with designed tolerance compensations. By creating separate manufacturable components with standardized connection interfaces (such as protrusion-recess fittings or brazing surfaces), the design accommodates normal manufacturing tolerances while achieving strong structural bonds and efficient thermal contact, thus improving structural stability without requiring excessive manufacturing precision.
4Duration of action of stationary object
If different materials are used for base body and soldering part, then service life is extended, but the device complexity increases
Solution Approach 1:
The invention applies local quality by assigning different material properties to different regions of the crucible based on functional requirements. The base body uses high specific heat capacity materials for thermal stability and longevity, while the soldering part uses corrosion-resistant, wettability-stable materials for extended service life in contact with liquid solder. This localized optimization of material properties throughout the crucible structure extends overall service life while maintaining a relatively simple integrated design.
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
Reduces brazing defects by 50% and doubles the crucible's service life, reducing manual cleaning frequency and ensuring safety by improving heat transfer and surface wetting stability.
Implementation Method 1
the base body part and the soldering part are respectively made of a material of a relatively large specific heat capacity and a material of a relatively good surface wettability, such that on the one hand, sufficient heat transfer can be achieved during use
Implementation Method 2
The base body part and the soldering part are arranged in a press-fitted inlaid structure, allowing compensation for heat loss and increased structural stability while achieving liquid solder sealing
Data Source
Figure 1~2
AI summary
The present invention provides a brazing crucible, characterized in that the brazing crucible comprises a base body part made of a first material and a soldering part made of a second material different from the first material; an inner space for accommodating a liquid solder is defined by the base body part together with the soldering part; the soldering part comprises a peripheral portion defining the inner space; and the base body part and the peripheral portion of the soldering part are hermetically fitted to each other to form the inner space.