Implementation standard about the brass wire

Requirement of the accurate: Our company adopts Germany spectrum analyer to analyze the chemical element in 24-hour pre-furnace trace testing, as well as to adjust the Zinc and copper content and control the harmful elements in a whole.

Accuracy of Wire diameter tolerance :Our company uses the Japanese micrometer “ Mitutogo ” to test the external diameter in accuracy tolerance, we test the tolerance of the wire from semi-finished, and control the tolerance within 0.001mm.

According to customers' requirement, we use the micro-electronic-tension machine set to test the tensile strength and elongation.

100% test the wire in vertical and curl wave, vertical must achieve the requirement ≥ 98%,curl wave ≤ 1,We test it by ruler.

The conductivity of EDM cutting wire must reach the standard 20-25%.We use the DC resistance measurement instrument to rest it.

The degree of the finished is requested above △ 6,the wire could not loose, but smooth .The surface could not have oil stain, macula , motting , water-trace or rough. We use precise microscope to test it.

We use moistureproof plastic film to make the products in vacuum no oxygen package.