Processing Technology

Quality is Vital.

“Quality is Vitality” These words were left behind by our second Chairman, Yasuhiro Yashiro, and form a psychological basis linking our group enterprises as a whole. Inheriting this maxim in perpetuity we are aiming to be a top global group by working untiringly for R&D and customer satisfaction.

What is the BENDA method?

The Benda Method is a process for manufacturing metal rings using cold-bending processing, welding, and other technologies.
Round steel is cold-rolled into long steel material, bent into a predetermined shape, and then bent in layers to create a spiral. Then, each spiral is cut, welded, and formed into a perfectly circular ring. Refinements and improvements to this process over many years has led to the establishment of high-quality, high-yield metal ring manufacturing technology that produces an extremely small amount of material loss (scrap).

01

Wire material

The raw input is round iron (wire) material.
02

Cold-rolling

The material is processed by rollers into elongated steel material with a square cross-section.
03

Bending

The material is bended, and at the same time is wound into a coil form.
04

Cutting up

The material is cut into rings with overlap.
05

Welding

The cut portions of the rings are welded.
06

Trimming

The protruding burr is trimmed away.
07

Normalizing

The rings are heated to make their overall structure and strength uniform.
08

Shot-blasting

This removes scale that has adhered to the surfaces.
09

Correction

The rings are put through a press to correct errors and make them perfectly round.

Processing Technology

What is the BENDA method?

Benda Method Specifications

Technology Possessed by Benda Kogyo