Quality Control Measures
Almost every metal corrodes under certain conditions. When the metal atoms are oxidized by the fluid, corrosion will occur, resulting in material loss on the metal surface. This reduces the thickness of components such as ferrules and makes them more prone to mechanical failure. Multiple types of corrosion can occur, and each type of corrosion poses a threat, so it is important to evaluate the best material for your application
Although the chemical composition of materials can affect the corrosion resistance, one of the most important factors to reduce the failure caused by material defects is the overall quality of the materials used. From the bar qualification to the final inspection of components, quality should be an integral part of every link.
Material Process Control and Inspection
The best way to prevent problems is to find them before they happen. One method is to ensure that the supplier takes strict quality control measures to prevent corrosion. That is starting from process control and inspection of bar stock. It can be inspected in many ways, from visually ensuring that the material is free from any surface defects to conducting special tests to detect the sensitivity of the material to corrosion.
Another way that suppliers can help you verify the suitability of a material is to check the content of specific elements in the composition of the material. For corrosion resistance, strength, weldability and ductility, the starting point is to optimize the chemical composition of the alloy. For example, the content of nickel (Ni) and chromium (CR) in 316 stainless steel is higher than the minimum requirements specified in ASTM International (ASTM) standard specification, which makes the material have better corrosion resistance.
In the Production Process
Ideally, the supplier should inspect the components at every step of the production process. The first step is to verify that the correct production instructions are followed. After manufacturing components, further experiments should confirm that the parts have been made correctly and there are no visual defects or other defects that may hinder the performance. Additional tests should ensure that the components operate as expected and are well sealed.
Post time: Feb-22-2022