Marshall

SLM Additive Manufacturing of Porous Biological Titanium Alloy Implant Materials: Optimized Combination of Mechanics, Physics and Topology _ Structure

Original Title SLM Additive Manufacturing of Porous Bio-Titanium Alloy Implant Materials An Optimized Combination of Mechanical Physical and Topological The technology of orthopedic implants is in the process of continuous improvement which is used to continuously improve the interaction with the surrounding bone tissue and its purpose is to ensure a better implant effect for patients A ti6al4v successful biological response between the implant and the surrounding bone is largely dependent on the combined results of mechanical property physical and topological properties Therefore the Ti6Al4V microporous structure is the most effective solution to solve and improve the traditional orthopedic implants This paper introduces a series of solutions to improve the design of microporous Ti6Al4V structures fabricated by SLM The elastic modulus of the prepared microporous structure was evaluated by three-point bending The results of the topography analysis are used to evaluate the difference between the CAD design dimensions and the actual manufacturing dimensions of the SLM Finite element analysis (adjusted CAD) uses experimentally derived dimensional data to accurately replicate the properties of SLM-fabricated structures A linear regression equation associated with the measured SLM dimensions as a function of the established CAD model of the design This regression equation is obtained by measuring the relationship between the actual porosity and the designed CAD dimensions The measured data can be further used as a reference for FE analysis and design thereby further helping engineering designers to fabricate near-net-shape SLM-fabricated microporous Ti6Al4V structures In addition the polished and sandblasted Ti6Al4V microporous structured surface can obtain suitable properties compared to the as-fabricated surface obtained both in terms of surface roughness and wettability Capillary tests show that all the analyzed Ti6Al4V microporous structures can transport liquid along their surface structures The cell viability test structure showed that the Ti6Al4V microporous structure fabricated by SLM did not release toxic substances This suggests that this structure may ensure a suitable environment for cell proliferation and attachment This research result also suggests a design strategy for the microporous structure of Ti6Al4V That is to say it not only has the appropriate mechanical property but also has the appropriate porosity roughness wettability capillary action and cell survival rate which are closely related to the performance of orthopaedic implants Finally a prototype hip implant with Ti6Al4V microporous structure was fabricated by SLM technology and the appropriate characteristics of the implant were also obtained during SLM fabrication Schematic drawing from CAD to finished product when manufacturing with SLM technology Research results The linear regression equation between the physical sample manufactured by SLM and the size of CAD structure is proposed The Ti6Al4V microporous structure with a porosity of about 65% has a suitable elastic modulus The cell titanium round bar viability test proves that the SLM structure does not release toxic substances The surface of the sample after polishing and sandblasting has super-hydrophilicity; The prototype of Ti6Al4V microporous hip implant was fabricated by SLM technology SLM technology is a high-performance metal additive manufacturing technology which selectively melts metal powder melts it one by one and accumulates it layer by layer according to the designed CAD model so as to obtain metal products SLM technology has the advantage of a high degree of design freedom Using SLM technology engineering designers can design products with complex shapes and personalized features such as porous structures This is impossible or difficult to achieve by traditional casting and forging processes Mechanical system for three-point bending tests on SLM-fabricated samples Expand the full text There is a broad market for SLM to manufacture porous metals because porous materials are particularly suitable for applications in the biological field especially as orthopaedic implants For example the microporous structure of Ti6Al4V has multifunctional characteristics and the modulation of mechanical property physical properties and biological properties can be realized on one component The accuracy of porous materials made by SLM is a big challenge ti6al4v eli which is caused by the difference between the CAD design size and the SLM printing size of the technology itself This difference in shape and size is detectable by the system

In this regard predictive software or on-line monitoring techniques are required to detect the difference between the two in order to achieve the desired porous structure ie both physical and mechanical property need to be met The finite element simulation technique in balance with experimental studies can be used as an engineering tool to predict and correct for inherent deviations in SLM manufacturing Meshing of FE Simulation titanium sheet grade 5 of SP1 Node The successful biological response of the implant and bone depends on the mechanical property the topologically optimized structure and the physical and chemical properties of the implant Ti6Al4V is widely used in orthopedic surgery because of its high specific strength good biocompatibility good corrosion resistance and low elastic modulus compared with stainless steel and Co-based alloys However the elastic modulus of Ti6Al4V (approximately 110 GPa) is still high compared to human cortical bone (10-30 GPa) This results in a stiffness mismatch between the implant material and the surrounding bone resulting in a stress distribution that is not sufficiently uniform at the interface Bone resorption around the implant is not detected until a certain critical point generally 10-20 years after the implant surgery when revision surgery is required Here the Ti6Al4V structural material does not match the elastic modulus of bone and its elastic modulus matching can reduce and avoid the problem of stiffness mismatch with bone SEM photos of microporous structure of SP1 SP3 and SP5 titanium alloy Topology optimization of implant materials directly affects the biological effects of bone Moderate surface roughness (Ra = 2-4 μm) has been shown in clinical practice to result in early healing promoting cell spreading and tissue fusion At the same time it has also been reported that it can promote the differentiation of bone cells reduce the cells that destroy bone growth and promote the growth and mineralization of bone The comparison titanium plate gr7 between the size designed by CAD and the size actually printed by SLM under the same scale The surface energy of the implant is another important surface characteristic which also plays an important role in the integration of the implant and bone This characteristic is usually indirectly measured by the solid-liquid contact angle (wetting angle) At the same time related studies have found that hydrophilic surface is more conducive to cell adhesion cell differentiation and cell mineralization Capillarity is the ability of a liquid to flow backward through a narrow space against an external force such as gravity Capillary capacity is also very important for cell adhesion and cell self-seeding of scaffolds SEM photos of SP3 and SP5 samples in three different States of SLM deposition polishing and sandblasting Here a Ti6Al4V microporous structure was designed and fabricated by SLM equipment with the aim of obtaining an implant with a suitable combination of elastic modulus porosity surface roughness wettability and capillarity Hydrophilic effect of SP4 samples in the as-deposited state Hydrophilic experiment results of sp5 sample in (a) polished state and (B) sandblasted state The time span of the capillary experiment and its corresponding height result Prototype of Ti6Al4V microporous hip implant fabricated in SLM Additive manufactured porous biomaterials targeting orthopedic implants A suitable combination of mechanical physical and topological properties，Materials Science and Engineering C，Volume 107 February 2020 110342， https//doiorg/101016/jmsec2019110342 Return to Sohu to see more Responsible Editor yunchtitanium.com

Grade: X14CrMoS17 martensitic stainless steel _ round bar

Original title Grade X14CrMoS17 martensitic stainless steel 14104 plate 14104 round bar 14104 flat steel 14104Shanghai square bar 1 4104 hexagonal bar 1 4104 coiled wire 14104 welded pipe 14104 seamless pipe 1 Finished parts can also be machined according to your drawings (tailor-made) and each size can be customized with forged products Grade X14CrMoS17 Number 14104 Classification Martensitic titanium tubing price Stainless Steel Density 77g/cm3 Standard EN 10088-32005 Stainless Steel Corrosion resisting steels for general purposes-Semi-finished products bars rods shapes and bright products-Technical delivery conditions EN 10088-12005 Stainless steel Stainless steel at a glance Chemical composition Carbon C 010-017 Silicon Si titanium round bar ≤ 100 Manganese Mn ≤ 150 Phosphorus P ≤ 0060 Sulfur S 015-035 Cr 1550 ~ 1750 Mo 020-060 Expand the full text Nickel Ni — Vanadium V — Mechanical Properties of X14CrMoS17 Steel (14104) Rm-Tensile strength (MPa) (+ QT650) 650-850 [R P02 02% Yield strength (MPa) + QT650 500 A-Small Elongation at break (%) (+ QT650) 10-12 Brinell hardness (HB) (+ A) 220 Metal feature classification Ti-6Al-4V Titanium Alloy Nitronic 60 Special Alloy Steel S20910 Heat Resistant Stainless Steel CPM9V Alloy Tool Steel GH4169 High Temperature Alloy X8CrNiS18-9 Germany

EN10088 Round Bar SuS316 Titanium welding pipe Ti Japan JISG4303 Stainless Steel S31803 ASTM A240 stainless steel Inconel 625 nickel base alloy 16mncr5 alloy tool steel s31668 China GB24511stainless steel CPM M4 high speed tool steel 05Cr17Ni4Cu4Nb China GB20878 3d titanium wire stainless steel 022Cr23Ni5Mo3N Stainless Steel GB1200 Round Bar Nitronic 50 Heat Resistant Stainless Steel 00Cr17Ni14Mo2 Stainless Steel gb3280 Round Bar American S30451 Standard ASTM A95 Round Bar S136 Plastic Mold Material 8418 Hot Work Mold Material SKD11 Cold Work Die Material C1720 Beryllium Copper Alloy C17200 Copper-Aluminum Alloy 7mn15 Non-Magnetic Alloy Steel 14104 Stainless steel ordering requirements 14104 Wire specification 33-43-53-63-73-83-93mm (2m long) 14104 Round titanium tubing price bar specification (10mm to 300mm round bar) complete length 2m to 6m; 14104 rolled plate specification (6mm thickness to 80mm rolled plate) complete width 205-710mm; 14104 Forged plate specification (12 to 250mm thick forged plate) complete 205-610mm wide; 14104 Pipe Specification Need to be customized with drawings and samples Return to Sohu to see more Responsible Editor yunchtitanium.com

Titanium's first MiniLED high-end monitor tailored for eSports players goes on sale _ Technology _ Support _ Picture

Original Title Titanium's titanium tubing price First MiniLED High-end Display Tailored for E-sports Players Is on Sale Titanium core selling point 27-inch 25601440 resolution Miniled screen 165Hz refresh rate 1ms (MPRT) fast response HDR1000 support covering 100% sRGB wide color gamut 95% Adobe 95% DCI-P3 cinematic color gamut 10 bit dazzling color depth 10000000 1 contrast ratio 1000 nits peak brightness Adaptive-Sync synchronization technology T V Rhine Certified Hardware Physical Low Blu-ray 65W high-power Type-C reverse charging interface competitive atmosphere lamp ergonomic lifting bracket supporting 90 ° rotation SKY the founder of "China's first e-sports player" has experienced many years of professional e-sports career He knows that the quality of e-sports equipment will greatly affect the performance of players so he has been hoping to make a set of high-end e-sports equipment that everyone can afford Now he has taken another step towards his dream Under the background that the mainstream MiniLED monitors on the market are often five or six thousand or even tens of thousands on July 15 Titanium and Longli Technology (300752) cooperated to launch the first 1000 yuan MiniLED competitive display which is expected to have a promotional price Titanium welding pipe of only 1999 yuan opening the era of MiniLED display "1" Titanium Miniled competitive display uses 27 inches 25601440 resolution and Miniled competitive screen which brings high-end configuration to players Support HDR1000 quantum dot wide color gamut covering 95% DCI-P3 movie-level color gamut 10 bit dazzling color depth T V Rhine certified hardware low blue light 165Hz rapid refresh 1ms (MPRT) rapid response Adaptive-Sync synchronization technology brings high-end e-sports experience Improve the player's operation space and enjoy every minute of the game The high brush is invincible with zero delay In terms of game experience Titanium MiniLED competitive display is designed based on SKY's long-term professional competitive experience It adopts 165 Hz high refresh rate professional competitive level configuration which supports players to show all kinds of extreme operations and control the situation in a natural and unrestrained way When shooting games and MOBA games need to switch the screen quickly the Adaptive-Sync technology can also synchronize the signal transmission between the graphics card and the display reduce the delay prevent the screen from stuttering and tearing even if the player sparks the keyboard and mouse the screen is still silky and clear Expand the full text High-end screen display technology extraordinary visual enjoyment If the game experience is well done the visual performance will naturally be of high quality Titanium MiniLED competitive display adopts the industry-leading MiniLED backlight technology Through micron-level fine light control it ensures that the bright area of the picture is not exposed and the dark area can be darkened bringing more delicate and realistic picture performance For players who pursue a more advanced viewing experience they can also turn on the HDR function in the video settings to further enhance the visual performance so that the bright places are brilliant and the dark places are subtle It is worth mentioning that the titanium MiniLED display also uses T V Rhine certified physical hardware low Blu-ray technology comfortable viewing while ensuring eye health

The original color presents all things mottled As a product with a wide range of application scenarios titanium MiniLED competitive display can also be used for image processing or graphic design which uses QD quantum dot film technology to cover 95% DCI-P3 movie-grade color gamut 95% Adobe RGB color gamut and supports HDR1000 It not only brings excellent color space and delicate level 3d titanium wire but also provides visual creators with the ability to use and create high-quality HDR content so that every animation and picture works can be fine thorough and lifelike High-end is also carefully carved in detail Strong performance industrial design can not be left behind Titanium MiniLED competitive display uses ergonomic multi-functional bracket which supports players to adjust the screen at will Whether it is horizontal and vertical screen viewing or split-screen dual-screen multi-screen operation it can be adjusted to the appropriate angle greatly improving the use experience As a slash youth in the new era whether the product has a rich expansion interface is also an important criterion for purchasing Titanium MiniLED competitive display provides HDMI Type-C (65W) USB IN and other interfaces Whether it is desktop/notebook XBOX/PS5/Switch or mobile phone/tablet it can ti6al4v eli be easily connected to enjoy the large-screen experience Its 65W high-power Type-C interface can also be used as a data transmission/fast charging interface to meet the needs of users and continue the battle Intimate after-sales service accompanies every player Strong products can not be without the support of strong after-sales service All users who buy Titanium MiniLED competitive display can enjoy "worry-free after-sales" service including 7-day no-reason titanium round bar refund 15-day quality problem replacement 3-year free warranty and 2-year free on-site service! So that every user can buy at ease use at ease enjoy the happiness and beauty brought by titanium display Excellent performance and high غير مجاز مي باشدt performance At present the basic price of displays with MiniLED technology on the market is about 3000 yuan some even as high as 7000 or 8000 yuan and the high price is prohibitive And either lack of low blue light eye protection or poor resolution frame rate etc The emergence of titanium MiniLED competitive display has changed this situation with the first promotional price of less than 2000 yuan physical low blue light HDR1000 165Hz high brush 65W Type-C reverse charging and other mainstream configurations A great choice for a 2000 price point MiniLED eSports ti6al4v monitor! At present Titanium MiniLED competitive display is being pre-sold in Jingdong The first promotion price is expected to be 1999 yuan and 50 yuan E card will be sent It's better to take action than to be moved Take it into your pocket immediately! Return to Sohu to see more Responsible Editor (function() { function getBrandHtml() { var brands = [] html = ''; for(var i = 0; i < brandslength; i++) { var brand = brands[i]; if(brandslength i+1) { html+= ''+brandname+''; } else { html+= ''+brandname+'、'; } } return html; }; if(documentgetElementById('linkBtn')){ documentgetElementById('linkBtn')onclick = function() { $('#brands')removeClass('brand');$ ( '# tipInfo')text ( 'Real name responded'); $ ('#linkBtn')remove();$ ('real-response content')css('line-height' '20px');$ ('real-response time')css('line-height' '20px'); }; documentgetElementById('brands')innerHTML = getBrandHtml(); }; })();。 yunchtitanium.com