scholarly journals Fatigue Strength Improvement of Low Carbon Steel through Carburizing Process with Coconut Shell Charcoal

2020 ◽  
Vol 875 ◽  
pp. 012064
Author(s):  
M Syahid ◽  
A Hayat ◽  
S Arief ◽  
Rudi
Keyword(s):  
Fatigue Strength ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Coconut Shell ◽  
Low Carbon ◽  
Fatigue Strength Improvement ◽  
Carburizing Process ◽  
Strength Improvement

Kajian Pack Carburizing Menggunakan Media Tulang Sapid an Batok Kelapa Untuk Meningkatkan Kekerasan Baja Karbon Rendah

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Tumpal Ojahan Rajagukguk ◽  
Miswanto
Keyword(s):  
Carbon Steel ◽  
Waste Product ◽  
Low Carbon Steel ◽  
Coconut Shell ◽  
Low Carbon ◽  
Materials Used ◽  
Carburizing Process

Bahan utama yang digunakan dalam penelitian ini adalah produk limbah tulang sapi dan batok kelapa yang diperoleh dari sisasisa tidak ada atau limbah rumah tangga yang dapat diolah menjadi arang untuk memberikan karbon tambahan. Bahan yang digunakan dalam penelitian adalah baja karbon rendah. Yang dilakukan adalah proses karburisasi paket menggunakan arang tulang sapi dan arang kelapa, dengan variasi suhu 900 oC, 950 oC, 1000 oC dan waktu detensi selama 3 jam, kami melakukan proses pendinginan dengan pendinginan menggunakan air. Adapun tujuan dari penelitian ini untuk memahami sejauh mana pengaruh variasi suhu kadar karbon dengan proses karburisasi paket, dapat meningkatkan kekerasan pada material baja karbon rendah. Kesimpulan dari penelitian setelah selesainya proses pack carburizing menjadi peningkatan persentase karbon (% C) terhadap material satu dan tidak rendah baja karbon dimana karbon sebelum prosa pack carburizing sebanyak 0,106% C naik menjadi enam belas persen 0,776 dari kami juta hingga 1.200% C. Tulang arang di seluruh ternaknya dan arang kelapa dapat digunakan sebagai sumber karbon yang dapat meningkatkan kekerasan dalam material baja karbon rendah. Kekerasan kelapa arang pada suhu 900 oC = 63,61 kgf / mm2, 950 oC = 64,20 kgf / mm2 dan 1000 oC = 64,30 kgf / mm2 sedangkan kekerasan tulang sapi arang pada suhu 900 oC = 61,61 kgf / mm2, 950 oC = 62,22 kgf / mm2 dan 1000 oC = 64,03 kgf / mm2 di mana suhu dan karbon yang lebih tinggi terikat pada baja karbon meningkat.   The chief ingredient used in this research is a waste product bone cows and coconut shell obtained from the remains of no or household wastes that can be processed into charcoal to give an extra carbon. The materials used on research is steel low carbon.The one conducted is a process pack carburizing using charcoal bone cows and charcoal coconut, with variations 900 oC temperature, 950 oC, 1000 oC and time detention for 3 hours, we do the process of cooling with the quenching using water. As for the purpose of this research to understand the extent of influence variations of temperature of carbon levels by pack carburizing process, can escalating violence in the material steel low carbon. The conclusion of the study following the completion of the process of pack carburizing be an increase in the the percentage of carbon ( % C ) against material one and did not low carbon steel where carbon prior to the prose pack carburizing as much as 0,106 % C rose to sixteen per cent 0,776 than us million until its 1,200 % C. Charcoal bone across his cattle and charcoal coconut can be used as a source of carbon that can be escalating violence in the material low carbon steel. Violence charcoal coconut at the temperature 900 oC = 63,61 kgf/mm2, 950 oC = 64,20 kgf/mm2 and 1000 oC = 64,30 kgf/mm2 while violence charcoal bone cows at the temperature 900 oC = 61,61 kgf/mm2, 950 oC = 62,22 kgf/mm2 and 1000 oC = 64,03 kgf/mm2 where the higher temperatures and carbon bound to carbon steel increasing.

Effect of Soaking Time on Paste Carburizing of Carburized Low Carbon Steel

2017 ◽  
Vol 740 ◽  
pp. 93-99
Author(s):  
Muhammad Hafizuddin Jumadin ◽  
Bulan Abdullah ◽  
Muhammad Hussain Ismail ◽  
Siti Khadijah Alias ◽  
Samsiah Ahmad
Keyword(s):  
Carbon Steel ◽  
Carbon Content ◽  
Low Carbon Steel ◽  
Case Depth ◽  
Carbon Steels ◽  
Low Carbon ◽  
Soaking Time ◽  
Low Carbon Steels ◽  
Carburized Steel ◽  
Carburizing Process

Increase of soaking time contributed to the effectiveness of case depth formation, hardness properties and carbon content of carburized steel. This paper investigates the effect of different soaking time (7-9 hours) using powder and paste compound to the carburized steel. Low carbon steels were carburized using powder and paste compound for 7, 8 and 9 hours at temperature 1000°C. The transformation of microstructure and formation carbon rich layer was observed under microscope. The microhardness profiles were analyzed to investigate the length of case depth produced after the carburizing process. The increment of carbon content was considered to find the correlation between types of carburizing compound with time. Results shows that the longer carburized steel was soaked, the higher potential in formation of carbon rich layer, case depth and carbon content, which led to better hardness properties for carburized low carbon steel. Longer soaking time, 9 hours has a higher dispersion of carbon up to 41%-51% compare to 8 hours and 7 hours. By using paste carburizing, it has more potential of carbon atom to merge the microstructure to transform into cementite (1.53 wt% C) compare to powder (0.97 wt% C), which increases the hardness of carburized steel (13% higher).

Hardness Distribution and Effective Case Depth of Low Carbon Steel after Pack Carburizing Process under Different Carburizer

2015 ◽  
Vol 776 ◽  
pp. 201-207 ◽  
Author(s):  
Dewa Ngakan Ketut Putra Negara ◽  
I. Dewa Made Krisnha Muku ◽  
I. Ketut Gede Sugita ◽  
I. Made Astika ◽  
I. Wayan Mustika ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Case Depth ◽  
Bamboo Charcoal ◽  
Hardness Distribution ◽  
Low Carbon ◽  
Bone Charcoal ◽  
Carburizing Process ◽  
Effective Case Depth ◽  
Effective Case

This research is concerned with the effect of different carburizers on hardness distribution, effective case depth and microstructure of low carbon steel after pack carburizing process. Carburizers to be used were combination of energizer (BaCO3), goat bone charcoal and bamboo charcoal with five different compositions. The specimens were heated to temperature of 950°C, soaked at the temperature for 4 hours and quenched in the water. After the process, microstructures of specimen were observed, the hardness was measured using Vikers method and effective case depths were calculated. The results obtained showed that for all types of carburizer used, the hardness were scattered from surface to the core with lower hardness level. Carburizer composition of 20% BaCO3 + 80% goat bone charcoal produced the highest hardness ( 789.273 HV1) at 0.2 mm from the surface, however, it yielded the lowest effective case depth (0.52 mm). The highest effective case depth of 1 mm was obtained using carburizer composition of 20% BaCO3 + 60% goat bone charcoal + 20% bamboo charcoal. Meanwhile, the original structures of raw material which consist of ferrite and pearlite transformed to hard martensite constituent in the surface after pack carburizing.

scholarly journals Effect of Grain-size on Fatigue Strength of Low Carbon Steel at Elevated Temperatures

1978 ◽  
Vol 21 (152) ◽  
pp. 181-188 ◽  
Author(s):  
Norihiko HASEGAWA ◽  
Yozo KATO ◽  
Masaki NAKAJIMA
Keyword(s):  
Grain Size ◽  
Fatigue Strength ◽  
Carbon Steel ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Low Carbon
Sign in / Sign up

Export Citation Format

Share Document