Wang Huimian, a senior engineer at the Technical Center of Taiyuan Iron and Steel Group, believes that in order to make pen nibs with steel, many special trace elements must be used to adjust the steel to the best performance. The slight change in the ratio of trace elements will affect the quality of the steel. This ratio cannot be found. , China’s pen-making industry will always need to import nib steel.

In order to refine the materials, Wang Huimian, a senior engineer at the Technical Center of Taiyuan Iron and Steel Group, said that because there is no reference material for the development of this product, it is refining from tens of kilograms for a single ingredient. Up.

The production process of pen-based products is the core secret of foreign companies. Wang Huimian and the others must independently develop an unprecedented steelmaking process. Without any reference, we can only continuously accumulate data, adjust parameters, and design process methods.

The inspiration for the breakthrough came from the home-made “mixing noodles”. If you want noodles to live moderately soft and hard, new “materials” must be added, and industrial “additives” must be added to the corresponding molten steel. Ordinary additives are lumps. If the lumps can be made thinner and thinner, the molten steel and the additives will blend more uniformly, which can enhance the machinability.

After five years of countless failures, under the electron microscope, Taiyuan Iron and Steel Group finally saw the pen tip steel with evenly distributed "additives". The experiment was successful in September 2016. After more than ten large-scale steelmaking, the first batch of steel with good machinability was finally released. This batch of stainless steel wires with a diameter of 2.3 mm can be proudly written with the "Made in China" logo.