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66 UEC Int’l Mini-Conference No.54

Effect of Biomass Species on Formability in
Forging of Biomass Powder Compact

Cho Zin Thant , Prof. Shohei KAJIKAWA
International student JUSST program, King Mongut’s Institute of technology
Department of Mechanical Engineering and Intelligence Systems
University of Electro-Communications Tokyo, Japan

1.Introduction Making wood powder compacts
Molding Temperature 120 °C
Driven by a growing interest in sustainable materials and the circular economy,
Pressurized with a punch to 40 MPa
this research explores the potential of biomass as a renewable resource for
manufacturing.
Specifically, we investigate the application of a metal forming technique,
forging, to shape biomass powder compacts.
Forging can apply a large amount of pressure to the entire material, so it can
be expected to achieve large deformation even in wood base biomass, whose
deformability is low.
Wood
Plastic
Composite
Variouss
Processing
method
Forging Experiment
The previous work focused only on Japanese cedar and temperature effects
Heat the mold until the temperature is reached to 180 °C.
This study investigates forging biomass powder from Japanese cedar,
Place two wood powder compacts into the mold.
bamboo, and hinoki with different particle size under the same conditions.
Intial Load 7.6 kN. Holding time 10 mins, Forming Load 57 kN
2.Objective
To evaluate the feasibility of forging biomass powder compacts into
complex, container-like shapes.
To understand the effect of varying particle size on the load-stroke
behavior during the forging process.
To characterize the visual integrity, analyze mechanical properties and
overall form of the successfully shaped biomass products.
3.Materials and Methodology

Materials 4. Results
Japanses Cedar
Particle size
Japanese Cedar Bamboo Hinoki less than 2.0mm 2.0 - 2.8 mm
Biomass Powder Preparation
Wood based biomass powder less than 2.0 mm and
between 2.0mm and 2.8mm
Binder Content 30%, Sucrose : Citric acid 3:1

Natural
Binder

Fig1 : Apperance of the molded Fig 2: Load variation during forging
Sucrose Citric Acid products process
Forging effectively creates structurally sound biomass products, with
References particle size critically influencing compaction and fluidity.
[1] S. Kajikawa, M. Horikoshi, T. Kuboki, S. Tanaka, K. Umemura, and K. Smaller particles require more force due to higher friction, while larger
Kanayama, “Fabrication of naturally derived wood products by thermal flow ones show greater fluidity and complex densification.
molding of wood powder with sucrose and citric acid,” BioRes, vol. 15, no. 1, pp.
1702–1715, Jan. 2020 5. Conclusion
[2] H. Uejima, T. Kuboki, S. Tanaka, and S. Kajikawa, “Deep Container
This research has so far demonstrated Japanese Cedar biomass
Fabrication by Forging with High- and Low-Density Wood,” JMMP, vol. 8, no. 1, p.
formability via forging, highlighting particle size influence.
30, Feb. 2024
[3]H. Suzuki, T. Kuboki, and S. Kajikawa, “Deep container fabrication by Future work will broaden material scope, optimize processes, and
forging wood powder compact,” 2025. conduct comprehensive characterization for sustainable manufacturing.