The requirements for the furnace fixture mainly include the following aspects to ensure that it can effectively fix and protect the printed circuit board (PCB) and its components in the electronic product manufacturing process, and ensure the smooth progress of the soldering process.
1. Material requirements
High temperature resistance: The fixture material must be able to withstand the high temperature environment of wave soldering and reflow soldering. Common materials include titanium alloy, synthetic stone, stainless steel, ceramics, and high-temperature synthetic materials.
Corrosion resistance: The material should be able to resist the corrosion of soldering flux and solder to extend its service life.
Low thermal expansion coefficient: The thermal expansion coefficient of the material should be low to avoid deformation at high temperatures.
2. Design requirements
Dimensional accuracy: The dimensions of the fixture should be perfectly matched with the PCB board to ensure secure fixation.
Ventilation design: The fixture should have a good ventilation design to ensure even flow of hot air and avoid local overheating.
Lightweight: While ensuring strength, fixtures should be as lightweight as possible for easy operation and handling.
3. Processing requirements
Precision machining: The machining accuracy of the fixture should be high to ensure a tight fit of each component and avoid looseness or displacement.
Surface treatment: The surface of the fixture should be treated with anti-oxidation and anti-corrosion measures to extend its service life and ensure product quality.
4. Functional requirements
Positioning function: The fixture should be able to accurately locate the PCB board and components, ensuring that there will be no displacement during the furnace process.
Preventing deformation: The fixture should be able to effectively prevent the PCB board from deforming in high temperature environments.
Stability: During the furnace passing process, the fixture should remain stable without shaking or tilting.
5. Service life requirements
Durability: The fixture should have a long service life and be able to withstand multiple furnace operations without damage.
Maintainability: Fixtures should be easy to repair and maintain, and damaged parts should be easily replaceable.
6. Safety requirements
No harmful substances: The fixture material should not contain harmful substances and will not release toxic gases at high temperatures.
Safe operation: Fixture design should consider the safety of operators and avoid burns or other accidents during use.
7. Cleaning requirements
Easy to clean: Fixtures should be easy to clean and capable of effectively removing residual solder, flux, and other substances.
Anti pollution: The surface of the fixture should have a certain degree of anti pollution ability to reduce the adhesion of pollutants.