Characteristics of STS630 Based Metal Injection Molding Products on Powder Size, Sintering and Heat Treatment Conditions

2013 ◽  
Vol 372 ◽  
pp. 398-401
Author(s):  
Hee Jin Jeong ◽  
Hwan Kyun Yeo ◽  
Dae Yeol Bae ◽  
Je Hyun Kim ◽  
Dong Woo Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Injection Molding ◽  
Sintering Temperature ◽  
Processing Condition ◽  
Metal Injection Molding ◽  
Powder Size ◽  
Optimal Processing ◽  
Treatment Conditions ◽  
Debinding Process

This study proposes the research method to examine through experiment the mechanical properties of final products based on the size and sintering temperature of powder particle during STS630 powder based metal injection molding and heat treatment processing condition after the sintering. The feedstock for the injection was manufactured based on STS630 powder with the diameter of 7.0±1.0μm and 8.0±1.0μm and the sintering was carried at 2 temperature conditions of 1300°C and 1355°C after the injection and debinding process. Heat treatment conditions of sample after the sintering were divided into 2 types thus final samples of total 8 cases were manufactured. Then, the 5 types of mechanical properties test were conducted. Optimal processing conditions for MIM molding and heat treatment of STS630 powder could be established based on it.

Metal Injection Molding Process of Mo2FeB2 Boride Base Cermets

2007 ◽  
Vol 534-536 ◽  
pp. 377-380 ◽  
Author(s):  
Hirofumi Tashiro ◽  
Koro Hirata ◽  
Yuji Yamasaki ◽  
Kenichi Takagi
Keyword(s):  
Mechanical Properties ◽  
Liquid Phase ◽  
Injection Molding ◽  
Sintering Temperature ◽  
Casting Machine ◽  
Dimensional Accuracy ◽  
Metal Injection Molding ◽  
Processing Route ◽  
Injection Molding Process ◽  
Molding Process

Mo2FeB2 boride base cermets produced by a novel sintering technique, called reaction boronizing sintering through a liquid phase, have excellent mechanical properties and wear and corrosion-resistances. Hence, the cermets are applied to the injection molding die-casting machine parts and so on. Metal injection molding (MIM) is a suitable processing route for the mass production of complex shaped and high performance components. In general, it is difficult for the liquid phase sintered materials to be applied to the injection molding process because significant shrinkage and deformation occur during sintering. In this study, the MIM process was applied in the production of Mo2FeB2 boride base cermets parts. We investigated that the effect of deoxidization and sintering temperature on mechanical properties and deformation of the cermets. As a result, deoxidization temperature of 1323K and sintering temperature of 1518K were suitable. The MIM products of the cermets showed allowable dimensional accuracy and the same mechanical properties as the press-sintered.

Study on Na2O-B2O3-SiO2-CaO-P2O5-F System Glass-Ceramics

2013 ◽  
Vol 591 ◽  
pp. 40-43 ◽  
Author(s):  
Yan Na Xiao ◽  
Ming Shun Zhang ◽  
Wen Li Zhang ◽  
Jian Guo Jin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Biological Activity ◽  
Sintering Temperature ◽  
Glass Ceramics ◽  
Sem Analysis ◽  
Phase Region ◽  
Basic Point ◽  
Treatment Conditions ◽  
Composite Glass

This paper studied the Na2O-B2O3-SiO2-CaO-P2O5-F glass-ceramics and obtained the complex biological glass-ceramics with low sintering temperature, high mechanical properties and good biological activity. In this paper, the better basic point was selected in phase region of Na2O-B2O3-SiO2 glass system. It was studied that the effect of different percent of CaO, P2O5 and F addition on the mechanical properties and biological activity of the glass-ceramics. The glass powder was prepared by melting and quenching in water, and then by molding and sintering, composite glass-ceramics materials was obtained. With the help of DSC, XRD and SEM analysis methods and testing means, the phases and heat treatment systems of the material were determined, and the microstructure of materials in the different heat treatment conditions was observed. The biological activity was tested in SBF simulated body fluid . Research shows that: the introduction of F can effectively reduce the melting temperature of the material and is helpful to crystallization. The introduction amount of CaO, P2O5 and F can affect the biological activity of glass-ceramics. In the range of introducing CaO, P2O5 and F in this paper, the mechanical properties and biological activity of glass-ceramics increase with the amount of the introduction of CaO, P2O5 and F.

Metal Injection Molding of Super Elastic Ti Alloy Materials

2012 ◽  
Vol 706-709 ◽  
pp. 1961-1966 ◽  
Author(s):  
Hideshi Miura ◽  
Hyun Goo Kang ◽  
Kensaku Sagara
Keyword(s):  
Heat Treatment ◽  
Injection Molding ◽  
High Strength ◽  
Elastic Behavior ◽  
Metal Injection Molding ◽  
Ti Alloy ◽  
Specific Strength ◽  
Treatment Conditions ◽  
Powder Type ◽  
Powder Compacts

Ti-10V-2Fe-3Al is one of super elastic Ti alloys, which is the b type Ti alloy and shows the excellent properties such as high specific strength and corrosion resistance. By the combination of Cold working and heat treatment, high strength as same as the steels are obtained. Therefore, Ti-10V-2Fe-3Al is hoped to be a next generation’s spring material. In this study, Metal Injection Molding of super elastic Ti alloy materials are investigated by changing the process parameters such as powder type (mixed elemental or alloy), debinding and sintering conditions, and heat treatment conditions to obtain the excellent super elastic properties. Tensile strength of injection molded Ti-10V-2Fe-3Al compacts sintered at 1250 with mixed elemental powders showed approximately 85% of wrought materials. On the other hand, alloy powder compacts showed about 80% strength of wrought materials. Their super elastic behavior depended strongly on the heat treatment conditions.

Influence of Sintering Temperature on Mechanical Properties of Ti-6Al-4V Compacts by Metal Injection Molding

2005 ◽  
Vol 475-479 ◽  
pp. 2639-2642 ◽  
Author(s):  
Shi Bo Guo ◽  
Xuan Hui Qu ◽  
Xin Bo He
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Titanium Alloys ◽  
Sintering Temperature ◽  
High Vacuum ◽  
High Strength ◽  
Metal Injection Molding ◽  
Light Elements ◽  
Excellent Corrosion Resistance ◽  
Real Challenge

Titanium and titanium alloys have low density, high strength, excellent corrosion resistance in many media and are known to be biocompatible. This combination of properties makes titanium and its alloys an excellent choice for the applications, such as watch parts, medical devices, dental parts and sports goods. However, in the respect of fabricating complicated shaped parts, low machinability may be a barrier to practical uses. Therefore, it is considered to be very available that metal injection molding(MIM) process is applied to fabricate titanium alloy parts[1-2]. Nevertheless, injection molding of titanium and its alloys presents a real challenge to the processor due to its reactivity. Titanium not only has a strong affinity to oxygen, but also tends to react readily with carbon, nitrogen or hydrogen from the furnace atmosphere. Therefore, contamination by interstitial light elements such as oxygen and carbon is a serious problem because they have much influence on the mechanical properties of titanium alloys[3-5]. So it is necessary to control debinding and sintering conditions. In this paper, preparation of Ti-6Al-4V compacts was performed by MIM process. To reduce the contamination, the debound compacts were sintered at moderate temperature range from 1170°C to 1320°C and high vacuum (10-3Pa). On these conditions, the mechanical properties and relative density of sintered compacts were investigated.

scholarly journals Heat Treatment Evaluation for the Camshafts Production of ADI Low Alloyed with Vanadium

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1036
Author(s):  
Eduardo Colin García ◽  
Alejandro Cruz Ramírez ◽  
Guillermo Reyes Castellanos ◽  
José Federico Chávez Alcalá ◽  
Jaime Téllez Ramírez ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Ductile Iron ◽  
Volume Fraction ◽  
Energy Impact ◽  
Treatment Conditions ◽  
Mold Casting ◽  
Grade 3 ◽  
Good Agreement

Ductile iron camshafts low alloyed with 0.2 and 0.3 wt % vanadium were produced by one of the largest manufacturers of the ductile iron camshafts in México “ARBOMEX S.A de C.V” by a phenolic urethane no-bake sand mold casting method. During functioning, camshafts are subject to bending and torsional stresses, and the lobe surfaces are highly loaded. Thus, high toughness and wear resistance are essential for this component. In this work, two austempering ductile iron heat treatments were evaluated to increase the mechanical properties of tensile strength, hardness, and toughness of the ductile iron camshaft low alloyed with vanadium. The austempering process was held at 265 and 305 °C and austempering times of 30, 60, 90, and 120 min. The volume fraction of high-carbon austenite was determined for the heat treatment conditions by XRD measurements. The ausferritic matrix was determined in 90 min for both austempering temperatures, having a good agreement with the microstructural and hardness evolution as the austempering time increased. The mechanical properties of tensile strength, hardness, and toughness were evaluated from samples obtained from the camshaft and the standard Keel block. The highest mechanical properties were obtained for the austempering heat treatment of 265 °C for 90 min for the ADI containing 0.3 wt % V. The tensile and yield strength were 1200 and 1051 MPa, respectively, while the hardness and the energy impact values were of 47 HRC and 26 J; these values are in the range expected for an ADI grade 3.

Preparation and Mechanical Properties of Inconel718 Alloy by Metal Injection Molding

2010 ◽  
Vol 39 (5) ◽  
pp. 775-780 ◽  
Author(s):  
Hu Youhua ◽  
Li Yimin ◽  
He Hao ◽  
Lou Jia ◽  
Tang Xiao
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Metal Injection Molding
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