- Cold forging is a metal forming process that modifies material thickness by reducing or increasing it through controlled deformation. By applying cold forging technology, complex three-dimensional shapes can be produced, enabling the conversion of components traditionally manufactured through machining into press-formed products.
Processes such as local thickening beyond the original sheet thickness and material filling into narrow sections are particularly challenging. Successful production requires a thorough understanding of material flow and die design that minimizes stress and wear on the tooling.
Kyoshin leverages advanced sheet metal forging technology and extensive process know-how to achieve high-precision forming while improving productivity and reducing manufacturing costs.
- (Product Overview)
This component was previously manufactured by machining a brass round bar, drilling holes, and creating a semi-cylindrical (“kamaboko”) shape.
By redesigning the product and converting the process to stainless steel press forming, Kyoshin achieved a 20% cost reduction compared with the conventional manufacturing method.
The process maintains an inner diameter tolerance of ±0.03 mm while producing a clean round hole with no rollover. Tool life was improved through the optimization of die materials, forming lubricants, and process design.
Material: Stainless Steel (NSS304ES)
Thickness: t = 7.00 mm
- (Product Overview)
This product is manufactured using a combined process of sheet metal forging and deep drawing.
By converting the manufacturing method from conventional machining to press forming, substantial cost reductions were achieved.
Material: Stainless Steel (SUS304)
Thickness: t = 1.70 mm