Silver Alloy Quartz Glass Heating Burner
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Solution Overview
Problem
The existing welding methods for quartz glass components face challenges due to impurities forming and depositing on the connection surfaces during the high-temperature welding process, leading to flaws such as bubbles or breakage, and the erosion of copper burner nozzles results in thermal and corrosive issues, increasing the risk of flashback.
Innovation Solution
A heating burner with a burner head made of silver or a silver-based alloy is used, featuring a cooling system and burner nozzles designed to dissipate heat rapidly, reducing erosion and particle generation, and the burner nozzles are either integral to the base body or made as separate inserts to minimize exposure and enhance wear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If copper burner nozzles are used for heating quartz glass components, then the burner can effectively heat the components to welding temperature, but the copper nozzles undergo thermal erosion and corrosion, increasing the risk of flashback and requiring frequent replacement
Solution Approach 1:
The burner head is constructed as a composite structure with a copper base body providing thermal conductivity for effective heating, and a ceramic coating layer providing erosion and corrosion resistance. This composite material approach allows the burner to maintain high operating temperatures while significantly improving nozzle durability and reducing flashback risk.
Solution Approach 2:
The burner nozzles are designed as replaceable inserts rather than integral parts of the burner head. When the ceramic-coated nozzles wear out, they can be quickly replaced without replacing the entire expensive burner head assembly, reducing downtime and maintenance costs.
2Strength
If high-temperature welding is performed on quartz glass components, then the components can be bonded together, but impurities form and deposit on the connection surfaces, causing bubbles or breakage
Solution Approach 1:
The burner system incorporates a gas distribution system that introduces an inert or controlled atmosphere during the welding process to prevent oxidation and impurity formation on the quartz glass connection surfaces, thereby eliminating bubbles and breakage while maintaining strong weld bonds.
Solution Approach 2:
The ceramic coating on the burner nozzles, while primarily designed for erosion resistance, also serves to reduce impurity generation by preventing copper oxidation and material degradation at high temperatures, thus converting a protective function into a dual-purpose solution that addresses both nozzle durability and weld quality.
3Reliability
If the burner head is cooled to prevent overheating, then thermal erosion is reduced, but the cooling system complexity increases and may affect the uniformity of heating
Solution Approach 1:
The cooling system is designed with localized cooling channels positioned strategically at the nozzle tips and high-heat zones of the burner head, rather than uniform cooling throughout. This localised approach provides erosion resistance where needed most while minimizing interference with the overall heating uniformity and reducing cooling system complexity.
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 use of a silver-based heating burner reduces thermal erosion and impurity deposition, ensuring a solid weld seam with minimal optical attenuation, maintaining the transparency and integrity of quartz glass components, and allowing for efficient heat management and reduced risk of flashback.
Implementation Method 1
A heating burner with a burner head made of silver or a silver-based alloy is used, featuring a cooling system and burner nozzles designed to dissipate heat rapidly
Implementation Method 2
The use of a silver-based heating burner reduces thermal erosion and impurity deposition
Implementation Method 3
at least one burner nozzle is connected to a supply line for a fuel gas or a fuel gas mixture, in which the fuel gas and oxygen react with each other in a combustion reaction and by means of which a workpiece is heated
Data Source
AI summary
Known heating burners for producing a welded joint between components of quartz glass include a burner head in which at least one burner nozzle is formed, a burner-head cooling system for the temperature control of the burner head and a supply line connected to the burner nozzle for a fuel gas. Starting from this, to modify a heating burner in such a way that impurities in the weld seam between quartz-glass components to be connected are largely avoided, it is suggested that the burner head should include a base body of silver or of a silver-based alloy.