จำนวน Repository ( 8 )

การออกแบบและผลิตเสื้อสตรีโดยกระบวนการแปลงวัสดุเหลือใช้เป็นผลิตภัณฑ์ใหม่
การออกแบบและผลิตเสื้อสตรีโดยกระบวนการแปลงวัสดุเหลือใช้เป็นผลิตภัณฑ์ใหม่

Nowadays fashion industry affects the environment around the world and from that situation many fashion designers pay attention to the process of designing by upcycling. Researchers are interested to study the knowledge of fashion up cycling for creating my own up cycling project including 5 looks of women’s wear by using the upcycling method combining with quilting techniques. In addition then the 5 up cycling women- clothes are evaluated by 50 assessors about fashionable design and wearable design for forecasting the potential of making clothes by using up cycling methods for wearing in the real life. From the result of the knowledge’ s fashion up cycling and the evaluation there is possibility of making different designs from the old clothes into the new clothes and many people think the upcycling clothes can be wearable and fashionable.

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การพัฒนาเทคโนโลยีการผลิต ผลิตภัณฑ์โลหะผงทังสเตนคาร์ไบด์เพื่อการใช้งานในอุตสาหกรรมอย่างยั่งยืน
การพัฒนาเทคโนโลยีการผลิต ผลิตภัณฑ์โลหะผงทังสเตนคาร์ไบด์เพื่อการใช้งานในอุตสาหกรรมอย่างยั่งยืน

This study is meant to help develops better facilities for Tungsten Carbide powder production process. The 10 kg-capacity machine used was able to produce 85 -95.49 percent purity Tungsten carbide powder. When measured most of the particle sizes and distribution between 0.03-350.00 !lm. which are considered large sized. More than that those tungsten carbide particles are contaminated by other kinds of metal especially Cobalt binder. We have tried to improve the Tungsten Carbide manufacturing processes by combining more steps including ball milling drying and screening. After 24-hours ball milling process the result showed that we were able to produce smaller Tungsten Carbide paliicles sizing from 0.025 to 30.00 ~lm. The obtained particles are also rounder and with 99.50 percent purity. They are also easier to grade. The Tungsten Carbide manufacturing technology yet needs a further development to eventually produce the desired hard material.

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Recycling of tools Scrap
Recycling of tools Scrap

This research is to study the recycle process of hard materials high hardness type and cemented carbide produced by press forming and sintering process included cemented carbide mixed with tungsten carbide cobalt silicon titanium and others. The research aims to recovery tungsten to use it again. It starts in cleaning and ball milling materials for resizing from length 12-25 mm. width 10-15 mm and thickness 2.5-8.0 mm. then disintegrated with the electric-chemical process filtering metal powder cleaning and drying. The result of dissolved materials with electricchemical process in 85% condensed HCl 6-24 volts and 3-10 amperes. The solution heats up 180 degree Celsius is found that material will be 550 11m of W03 the same as usage of Phosphoric Solution. The result of the study in dissolved materials by using the conductor of electricity is found that usage of cobalt is the best to disintegrate tungsten carbide better than tungsten carbide and stainless steel 10-15%. The result of this research is found that the best practice of tungsten carbide recovery is dissolved materials with electric-chemical process in not over 7N condensed HCl 6.00 volts and 3.00 amperes. The metal powder will be almost 100% pure tungsten carbide and particle sized distribution is 34-360 11m. After ball milling for 24 hours particle sized distribution is less than 60 11m compared with the imported metal powder. It is concluded that the recycle of cemented carbide into tungsten carbide powder qualified for sintering work and produced to the durable hard materials. It ensures that this research is useful for the related industry and the approach for production of tungsten carbide which was instead of the imported metal powder.

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สมบัติทางวิศวกรรมของบล็อคปูพื้นคอนกรีตพรุนจากผิวทางแอสฟัลต์เก่านำมาใช้ใหม่โดยการแทนที่มวลรวมหยาบ
สมบัติทางวิศวกรรมของบล็อคปูพื้นคอนกรีตพรุนจากผิวทางแอสฟัลต์เก่านำมาใช้ใหม่โดยการแทนที่มวลรวมหยาบ

This research aimed to study the use of coarse aggregate obtained from removing old recycled asphalt pavement (RAP) in the production of the porous concrete paving block. Crushing and size separation of the coarse aggregate by using standard sieve size by selected the gradation size of the coarse aggregate that passed to sieve size 1/2” and retained on sieve size 3/8” and other that passed to sieve size 3/8” and retained on sieve size No.4 by mixing ratio 50 : 50 of the mass as replaced natural coarse aggregate. Portland cement quantity about 18% and 20% by weight of the aggregate. The water to cement ratio was 0.30 and 0.35 respectively. Compressive strength flexural strength and water permeability were investigated. The results showed that the cement content and water to cement ratio was influenced the strength properties and water permeability rate of the porous concrete paving block. The porous concrete paving block mixed with higher cement content (20%) had the compressive strength at the age of 28 days increased by 16-24% when compared with lower cement content (18%). On the other hand the water permeability rate decreased by 5.1-8.1%.

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การวิจัยและพัฒนาการใช้ประโยชน์จากของเหลือทิ้งในชุมชนตามรูปแบบชีวิตวิถีใหม่ : ขยะโฟม
การวิจัยและพัฒนาการใช้ประโยชน์จากของเหลือทิ้งในชุมชนตามรูปแบบชีวิตวิถีใหม่ : ขยะโฟม

During the epidemic of the coronavirus covid-19 single-use plastic containing products were in high demand across the community and may not be cost effective to recycle. However repurposing such materials can reduce their environmental impact for instance plastic foam waste can be made into pots for planting different types of plants and trees. By mixing the foam with a suitable cement in a ratio of 1:1 a large range of pot diameters from 4.5-10 inches can be produced suitable for both indoor and outdoor planting requirements. These pot products suitable for growing plants of all sizes are durable unbreakable water tight. Therefore it is a product that repurposes the leftovers from the community and may even add value. This strategy helps reduce the problem of waste and in particular encourages replenishment of green space to nature and the environment which also helps to combat global warming.

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