Technologies

High-performance Frames Developed from our Expertise and Advanced Simulation Technology
H-one automobile frames support the safety, comfort, and environmental performance of automobiles
With advanced metal forming and welding technologies which fully apply our cutting-edge
research and development as well as our unique expertise, we are able to produce high-quality
automobile body frames with world-class performance.

from the inside.

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We are comprehensively involved in all stages from initialresearch and development to product design, manufacturing technology development, and mass production.
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Research and Development

In order to achieve reduced weight and greater safety for ourframes, we carry out independent simulations on collisions, strength,and rigidity for a whole automobile body.
Our research and development are not limited to frames, but covera wide range of material engineering fields.

2Frame Design

We participate in designing of new vehicle
models carried out by automakers from theearliest stages of planning. In addition tosimulations on collisions, strength, and rigidity,
we use forming and welding simulations topropose optimal frames for each vehicle typewhich combine excellent performance, highquality, and cost competitiveness.

4Mass production can realize inventive
ideas which are proposed in upstream
processes, with our various manufacturing
sites around the world effectively
utilizing large-scale press machines andvarious robots.
The combination of such equipmentwith our proprietary manufacturing
technologies and production management expertise allows us to efficiently
manufacture superior-quality products.

Manufacturing Equipment

By sharing and coordinating product design data between processes ranging
from die design to automated processing, and processes ranging from welding
line simulation to robot programming, we are able to shorten all lead times
required until completion. We also use the latest measuring instruments tomake comparisons of actual parts against product design data, ensuringhigh-precision quality.

Welding Line Simulation

Mass Production of Frames

Die Design

Stamping Process

Cutting Process

Welding Process

Finishing Process

Product Delivery

Frame Performance Simulation

Welding Line Installation

Collision Simulation

低解像度
110% 拡大

Rigidity Simulation

Strength Simulation

Unique Products Created throughResearch and Development
3DQ Body Frames

DiesMetal Separators for Fuel Cells

H-one is the world’s first company to successfully mass-produce body frames using 3DQ (Three-Dimensional
Hot Bending and Direct Quench) technology, in which quenching is performed on steel tubes to enhancetheir material strength. Body frames produced with this method have outstanding strength at the level of
1,500 MPa, which can both increase passenger safety and reduce part weights, and also have excellent
accuracy of form.
Since it enables high-efficiency manufacturing without the need for dies by using ultra-strength steel tubes
with complex shapes,
3DQ technology canbe applied to producea wide range of frame
types.

In addition to the manufacturingof dies, we are involved through ourGroup companies in the productionof blocks of cast metal which serve as
raw materials for those dies. Our die
production technology and expertisein high-strength material processing
cultivated over the course of morethan 30 years has allowed us to gain
a tremendous degree of trust fromboth domestic and overseas customers.

Metal Separators are a component of the fuel cell stacks which
serve as the source of power for fuel-cell vehicles. They are produced from extremely thin stainless steel materials, finely processed to circulate hydrogen, air, and coolant by applying ourprecision punching and precision die production technologies.

3(Model of power generation with a single cell)H₂(hydrogen)Hydrogenelectrode (-)

Oxygenelectrode (+)

O₂(oxygen)

H₂O

Cell
Cell
Cell
Stacked arrangement

Electrolyte membrane

ElectronElectrode layer

Diﬀusion layer

Separator

Separator(water)Separator(Joint development withNIPPON STEEL & SUMITOMOMETAL CORPORATION, andNIPPON STEEL & SUMIKINPIPE CO., LTD.)■Fuel Cell Stack Component DiagramSingle cells are stacked in amanner similar to dry batteriesconnected in series

Cellpower generation
Principle of fuel cell stack power generation

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