Technological InformationStronger
1. Integrated development from the materials stage
In collaboration with Nippon Steel Corporation, which supplies our wire materials (Wire Rod), we have built a manufacturing system that integrates high strength right from the Wire Rod stage.
*There are some restrictions on the target products.
2. Patenting (heat treatment) and wire drawing (cold drawing)
Patenting is the heat treatment performed to obtain the pearlite structure that is the basis of high carbon steel such as piano wire.
It is possible to maximize the desired characteristics of the material by processing under optimal conditions.
Wire drawing is the process of drawing out the patented material (wire or intermediate materials) by passing it through a hole in the carbide material of a tool called a die.
By processing the wires continuously, the pearlite structure becomes a fibrous structure aligned in the direction it's being drawn.
In addition, the tensile strength of the wire material being drawn can be adjusted by controlling the overall cross-section reduction rate.
The strength of the wire to be commercialized is optimized through a combination of "1" and "2".
Patenting (outline of heat treatment line)
Wire drawing (outline of drawing line and state of pearlite structure)
3. Quenching and tempering (oil tempering)
This is a method of imparting strength to wire by applying heat after drawing out the wire to a specified diameter.
The wire material is heated to the austenite stage and then quenched in oil or another medium. This deposits a hard structure called martensite. The tensile strength and toughness are adjusted through further heating (tempering).
The strength of oil tempered wire can be optimized in the same way through a combination of "1" and "3".
Quenching and tempering (outline of heat treatment line and structural condition at each stage)
