Application Of Durostone

What is durostone ?

(High Temperature Nanocomposite) is a composite material made of glass fibers and high mechanical strength resins, a type of fiberglass compound. It is also known as reinforced fiberglass plastic. It is mainly designed for the different needs of circuit boards during the mounting process.

Product Features

A: Synthetic stone (high-temperature nanocomposites) maintains excellent physical properties at increasing temperatures;

B: The dimensional stability and flatness of the substrate can be maintained after repeated substrate mounting processes:

C: The low thermal conductivity of Synthesized Stone (High Temperature Nanocomposites) ensures heat distribution on the substrate;

D: With the characteristics of the synthesized stone (high-temperature nanocomposites), the substrate mounting fixtures can be used for precision machining;

E: The Synthetic Resin component in Synthesized Stone (high temperature nanocomposite) can effectively block the active properties of flux and prevent the generation of tin tip.

Applications

Tin paste printing, SMT placement, reflow soldering, wave soldering, conformal coating, etc.

Product Role

The role of synthesized stone in PCB assembly process

(1) Avoid contamination due to human touch;

(2) Reduce scrap;

(3) Prevent PCB bowing;

(4) Standardization of production line width;

(5) Use of multi-functional fixtures to increase production capacity;

(6) Cover the bottom of the SMT components, so that through the standard reflow soldering equipment to do localized soldering;

The role of synthetic stone in wave soldering

In the temperature gradually rising environment, can continue to maintain its physical properties, so that the synthesized stone can be wave soldering process, to achieve a high standard of results and will not have deformation of the situation occurs. In harsh environments with short-term exposure to 360 degrees Celsius and continuous exposure to 280 degrees Celsius operating temperatures, there is no separation of the layers of composite stones (high temperature nanocomposites).

Synthesized stone can improve the quality of PCBA with wave soldering process due to the following functions:

(1) Avoid contamination of gold fingers or contact holes due to manual touching;

(2) Preventing tin spillage from contaminating the surface of the substrate;

(3) Prevent the substrate from bending;

(4) Standardize the width of the production line;

(5) Use multi-molded holes to increase productivity;

(6) Cover the bottom of the SMT components, so that through the standard reflow soldering equipment to do localized soldering.

The role of synthesized stone in SMT mounting

Composite stones are suitable for SMT mounting processes.

Composite stones can be machined to achieve the required precision for SMT processes and maintain their flatness during continuous reflow cycles.

The low thermal conductivity of the material prevents deformation of the substrate to ensure the quality of the PCBA reflow.

4.1 The specific use of synthetic stone in the SMT placement process:

Solder Paste Printing, SMT Placement, Solder Re-soldering.

4.2 SMT pallets made of synthetic stone have the following functions:

(1) Support thin substrates or flexible circuit boards;

(2) Can be used for irregularly shaped substrates;

(3) Can carry multiple connected boards to increase productivity;

(4) Preventing the substrate from bending when soldering back.