Fabrication of Low-Cost, Cementless Femoral Stem 316L Stainless Steel Using Investment Casting Technique

2014 ◽  
Vol 38 (7) ◽  
pp. 603-608 ◽  
Author(s):  
Mohd Yusof Baharuddin ◽  
Sh-Hussain Salleh ◽  
Andril Arafat Suhasril ◽  
Ahmad Hafiz Zulkifly ◽  
Muhammad Hisyam Lee ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Investment Casting ◽  
316L Stainless Steel ◽  
Low Cost ◽  
Femoral Stem ◽  
Casting Technique ◽  
Cementless Femoral Stem

Design Process of Low Cost Uncemented Femoral Stem 316L Stainless Steel Using Investment Casting Technique

2016 ◽  
Vol 1133 ◽  
pp. 70-74
Author(s):  
Mohd Yusof Baharuddin ◽  
S. Hussain Salleh ◽  
Alias Mohd Nor ◽  
Muhammad Hisyam Lee ◽  
Ahmad Hafiz Zulkifly ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stainless Steel ◽  
Investment Casting ◽  
316L Stainless Steel ◽  
Femoral Stem ◽  
Von Mises Stress ◽  
Manufacturing Cost ◽  
Element Analysis ◽  
The Finite Element Analysis

Total hip replacement (THR) is a flourishing orthopaedic surgery which generating billion of dollars of revenue. The cost associated with the fabrication of implants has been increasing year by year and this phenomenon has burdened the patient with extra charges. Consequently, this study will focus on designing an accurate implant via implementing the reverse engineering of three dimensional morphological study based on a particular population. By using the finite element analysis, this study will assist to predict the outcome and could become a useful tool for pre-clinical testing of newly designed implant. A prototype is then fabricated using 316L stainless steel by applying investment casting techniques which reduce manufacturing cost without jeopardizing implant quality. The finite element analysis showed the maximum von Mises stress was 66.88 MPa proximally with a safety factor of 2.39 against endosteal fracture, and micromotion was 4.73 μm which promotes osseointegration. This method offers a fabrication process of cementless femoral stems with lower cost, subsequently helping patients, particularly those from non developed countries.

Manufacturing of 316L Stainless Steel Die Mold by Hot Embossing Process for Microfluidic Applications

2013 ◽  
Vol 1 (4) ◽  
Author(s):  
J. Zhang ◽  
J.-C. Gelin ◽  
M. Sahli ◽  
T. Barrière
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Low Cost ◽  
Hot Embossing ◽  
Solid Loading ◽  
Replication Process ◽  
Hard Materials ◽  
Small Complex ◽  
Replication Technique ◽  
Tolerance Control

Hot embossing process has emerged as a viable method for producing small, complex, precision parts in low volumes. It provides several advantages such as low-cost for molds, high replication accuracy for microfeatures and simple operation. The adaptation of this process for producing high fidelity hot embossed feedstock based metallic powders without the need for machining of the die mold is outlined. This was achieved through a combination of powder metallurgy and plastic hot embossing technologies to produce net-shape metal or hard materials components. In this paper, the manufacturing of molds that are suitable for the production of microfluidic systems using the replication technique is discussed. Variations of parameters in the replication process were investigated. An experimental rheological study was performed to evaluate the influence of the mixing parameters on the rheological behavior and thermal stability of 316L stainless steel feedstock. The effects of the solid loading on the feedstock rheological properties and tolerance control as well as mechanical properties and microstructures were investigated.

LIGHT WEIGHT FEMORAL STEM OPTIMIZATION BASED ON DESIGN AND MATERIALS

2011 ◽  
Vol 23 (01) ◽  
pp. 37-43
Author(s):  
Sudesh Sivarasu ◽  
Pearline Beulah ◽  
Lazar Mathew
Keyword(s):  
Stainless Steel ◽  
Cross Sections ◽  
316L Stainless Steel ◽  
Stress Shielding ◽  
Weight Ratio ◽  
Femoral Stem ◽  
Cement Mantle ◽  
The Body ◽  
Cobalt Chromium ◽  
Implant Fixation

One of the main constituents of total hip replacement (THR) is the design reconstruction of femoral stem component. The major causes of the debonding of the stem–bone interfaces include the aseptic loosening of the femoral stem, dislocation, wear, fatigue, micromotions, design factors, and certain biological responses generated due to the interaction of the implants with the body environment. The usage of cemented stems result in the generation of the high cement mantle stresses thereby results in the loosening of the implants. The porous stems developed by various manufactures are of solid stems with indentations, with collars, collarless, tapered stems; tear dropped polished stems without indentations offer greater rigidity, results in the transfer less load proximally, which results in greater stress shielding of the proximal femur. Stress shielding is found to be the major cause for the failure of the hip implants and revision surgeries. A stem of low stiffness alone would not suffice in achieving a reduced or optimal stress shielding. The biomaterials such as 316L stainless steel (SS), cobalt–chromium alloys (CoCrMo) , and titanium alloys (Ti–6Al–4V) used in THRs provide high strength to weight ratio and have an excellent biocompatibility. Skeletal femoral stems with varying cross sections were designed. The materials used for the design were 316L stainless steel and Ti–6Al–4V . The femoral stem with hexagonal cross section was optimized based on the design that has low weight and better load-bearing capacity. This novel design would ameliorate the implant fixation, aid in optimal rigidity, enhance the medullary revascularization, and offer better motility to the patient.

scholarly journals Design and Implementation of Ultrasonic Impact Peening-Based Device for Stainless Steel Surface Texture Fabrication

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 787
Author(s):  
Wangjie Hu ◽  
Qiang Zhang ◽  
Xiaohui Wang ◽  
Dongxu Zhao ◽  
Zhenjiang Hu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Surface Texture ◽  
Steel Surface ◽  
316L Stainless Steel ◽  
Surface Engineering ◽  
Low Cost ◽  
Surface Texturing ◽  
Stainless Steel Surface ◽  
Surface Microstructures

The manufacturing of precise surface microstructures with low cost is needed for surface texturing-based surface engineering. In this paper, a device for the fabrication of surface microgroove texture on stainless steel based on ultrasonic impact peening (UIP) is proposed and investigated. First, the principle of applying the UIP into the fabrication of surface texture is analytically described. Then, the design of the UIP device, particularly the design of functional systems and mechanical structures, is carried out. Next, a UIP experimental device is built, and is further applied to fabricate microgroove textures on 316L stainless steel. The subsequent experimental characterization of microgroove morphology demonstrates the feasibility of the designed UIP device for the fabrication of stainless steel surface texture.

scholarly journals Microstructure Analysis of Hydroxyapatite Coating on Stainless Steel 316L Using Investment Casting Technique for Implant Application

2018 ◽  
Vol 8 (5) ◽  
pp. 2168 ◽  
Author(s):  
Nuzul Ficky Nuswantoro ◽  
Gunawarman Gunawarman ◽  
Masagus Rifqie Saputra ◽  
Is Prima Nanda ◽  
Mohammad Hasbullah Idris ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Investment Casting ◽  
Microstructure Analysis ◽  
Hydroxyapatite Coating ◽  
Stainless Steel 316L ◽  
Casting Technique

Role of Debinding to Control Mechanical Properties of Powder Injection Molded 316L Stainless Steel

2013 ◽  
Vol 699 ◽  
pp. 875-882 ◽  
Author(s):  
Muhammad Rafi Raza ◽  
Faiz Ahmad ◽  
M.A. Omar ◽  
R.M. German ◽  
Ali S. Muhsan
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Injection Molding ◽  
316L Stainless Steel ◽  
Low Cost ◽  
Microstructural Analysis ◽  
Powder Injection ◽  
Laboratory Furnace ◽  
Injection Molded

316L stainless steel is widely used in various industries due to low cost, ease of availability and exceptional combination of mechanical properties along with corrosion resistance as compared to the other available metal alloys. In powder injection molding, debinding is very critical step and improper debinding can change the final properties dramatically. In the present study, affects of debinding on mechanical properties of powder injection molded 316L stainless steel were studied. The prepared feedstocks were molded according to MPIF 50 standard using vertical injection molding machine (KSA100). The plastic binder was removed at 450°C from the molded test samples using two different furnaces i.e. commercial and laboratory furnace followed by the sintering in vacuum, hydrogen, mixture of H2 and N2 (9:1) and nitrogen at 1325°C for 2hr with post sintering cooling rate 3°C/min . Test samples debound in commercially available furnace showed 97% densification and higher mechanical properties. The corrosion resistance was reduced due to presence of residual carbon during thermal debinding. The presence of carbon and formation of carbides and nitrides were confirmed by XRD and microstructural analysis. The results showed that the test samples debound in commercial furnace showed brittle behavior due to the presence of carbides and nitrides. Test samples sintered in N2 showed 96.3% density and tensile strength 751MPa. This value of strength is twice as compared to the sample debound in laboratory furnace followed by the sintering in vacuum. The achieved mechanical properties in vacuum sintered samples were comparable to the wrought 316L stainless steel (according to ASTM standard).

Sign in / Sign up

Export Citation Format

Share Document