Material, Machines and Methods for Sustainable Development

This edition presents papers from the 1st International Conference on Material, Machines and Methods for Sustainable Development (MMMS 2018, 1819 May 2018, Danang, Vietnam) that reflect the stateoftheart in the field of materials sciences and mechanical engineering. The contents of manuscripts from authors representing universities, research institutes, and industrial companies demonstrate ...

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Understanding the creation of reducing surface microroughness during ...

A typical optical fabrication process involves a series of basic process steps including: (1) shaping, (2) grinding, (3) polishing, and sometimes (4) subaperture tool finishing. With significant innovation and development over the years in both the front end (shaping using CNC machines) and the back end (supaperture tool polishing), these ...

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Grinding of glass : optimization of process parameters to improve ...

In the context of glass workpieces manufacturing, this study On figure 5 c and d, it can be observed that working at higher focused on the optimization of the rough grinding process. feed rate and wheel speed will reduce Sr2 values. It would The influence of the cutting conditions on the surface lead to reduce the amount of valleys.

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Grinding of glass : optimization of process parameters to improve ...

Grinding process involves numerous parameters that can be classified in three categories : tool parameters (wheel shape, dimensions, bond material, abrasive nature and size...), machining parameters (depth of cut feed rate, wheel speed, grinding direction...) and contact parameters (temperature, lubricant type and flow, ...).

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Jiabin Lu

Experiments were conducted to reveal the synergistic effect of electrorheological and magnethorheological effect, and the effects of process parameters, such as intensity of electric field, intensity of magnetic field, working time, machining gap between the workpiece and the needlelike tool, on material removal rate of glass surface.

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Material removal model of magnetorheological finishing based on dense ...

Jul 6, 2022Removal function and processing force test experiments were conducted under different working gaps. The normal pressure and effective friction equations over the polishing area were built based on the continuous medium and dense granular flow theories. Then, a novel MRF material removal model was established.

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A study on the effect of main process parameters of rotary ultrasonic ...

The experimental investigations take into account the effect of the key rotary ultrasonic machining input parameters including the ultrasonic power, spindle speed and feed rate on the output responses of cutting force, exit chipping, surface roughness, hole cylindricity and overcut errors, and surface integrity.

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A+W Production A+W Software for Glass and Windows

Therefore, scalable software systems and integrated solutions are the key to an optimized production environment. A+W Production is an extremely flexible PPS solution for complete rough and detailed scheduling for insulated glass, tempered glass, and laminated glass production. The system allows planning and control of even the most demanding ...

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International Journal of Engineering Trends and Technology (IJETT ...

grinding process are optimized by Signal to noise ratio and analyzed by Analysis of variance (ANOVA''s). Keywords: OHNS steel, Grinding parameters, MRR, S/N ratio, Optimization. of grinding process. IINTRODUCTION Grinding is the most widely used abrasive finishing process among all traditional processes used in production. In grinding

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J. Compos. Sci. | Free FullText | A Review on the Optimization of the ...

Corresponding process parameters of the SCBA production process and properties of SCBA are compared in order to identify relationships between the entities. Furthermore, methods, including sieving, postheating, and grinding, can be used to improve pozzolanic properties of SCBA, through which the ideal SCBA material parameters for concrete can ...

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Optical grinding machine SM series OptoTech CNC / 3axis / 5axis

Find out all of the information about the OptoTech product: optical grinding machine SM series. Contact a supplier or the parent company directly to get a quote or to find out a price or your closest point of sale. ... glass grinding machine CDM 400 CNC. CNC large highprecision. lens polishing machine ZPA 1500 CNC. for glass CNC 5axis ...

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First Demonstration of UltraThin Glass Panel Embedded (GPE) Package ...

The fabrication of ultrathin GPE package shown in this paper, uses 4 inch square and 60 μm thickness glass with through cavities of × mm 2 and Through Glass Vias (TGVs) around the cavities. Typical fabrication flow used is shown in Fig. 4. Fig. 4: View large Download slide Fabrication process of 3D GPE with SMC

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Ductile grinding of tungsten carbide applying standard CNC machines: a ...

Ductile mode grinding is a finishing process usually being applied to generate molds in brittle materials ( tungsten carbide) to be used for precision glass molding (PGM). To that aim, ultraprecision machineries (UPM) are applied controlling depth of cut not to exceed a critical value, hcu,crit ( 160 nm for tungsten carbide). Recent process analyses of the ductile mode grinding ...

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Study on the Optimization and Process Modeling of the Rotary ... NASA/ADS

Study on the Optimization and Process Modeling of the Rotary Ultrasonic Machining of Zerodur GlassCeramic NASA/ADS Rotary ultrasonic machining (RUM), a hybrid process combining ultrasonic machining and diamond grinding, was created to increase material removal rates for the fabrication of hard and brittle workpieces.

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Path optimization for uniform removal prepolishing of optical glass ...

Apr 20, 2022The optimization process realizes realtime verification of polishing results through simulation machining programming. The experimental results indicate that the variablespeed swing composite path can effectively reduce the complexity of prepolishing and that the versatility of equipment in different process stages can be maximized.

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How is Optical Glass Manufactured (Process Steps and Breakdown) Thomasnet

5 days agoThe process may vary somewhat based on the specific type of optical glass being manufactured and its intended application, but viewed from a general process perspective, the steps used to fabricate optical glass can be summarized into these main operations: Raw material batching. Melting. Refining/Degasification.

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Optimization of parameters in cylindrical and surface grinding for ...

The grinding wheel speed, grinding wheel grade, depth of cut, grinding wheel material and feed rate are the important parameters that affect the surface finish, which in turn affects the productivity and cost of the component. The grinding parameters used for both surface and cylindrical operations are tabulated in table 1.

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Process Optimization in Glass Polishing Based on a Material ... CORE

Here, the mould production is based on three stages: grinding, polishing and hardening, where, in the second step, different sets of process parameters play a key role in quality, time and cost. To optimize the polishing process of moulds a model for the correlation between the material removal and the process parameters is proposed.

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Surface hardness improvement in high efficiency deep grinding process ...

The grinding is one of the most important methods that directly affects tolerances in dimensions, quality and finished surface of products. One of the major problems in the material removal processes specially grinding is the heat generation during the process and the residual tensile stress in the surfaces of product. Therefore, optimization of High Efficiency Deep Grinding (HEDG) process is ...

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Grinding Science: Tips Calculations for Process Optimization DCM ...

Join Erik Lawson and Ashley Johnson as they answer some of the most frequently asked questions about the grinding process. In their experience helping customers optimize their process, it often comes down to three main factors: The importance of abrasives. Learn about abrasive types, calculating abrasive wear, and dressing conventional abrasives.

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Fracture Behavior and Intrinsic Strength of FPD Substrates

Glasses behave differently with respect to the scoring process. Critical parameters to control include geometry, size, and finish of the score wheel, scoring pressure and scoring technique. Typical conditions derived from historical experience with soda lime glass are inappropriate for high performance glasses used in AMLCDs.

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Wearadaptive optimization of inprocess conditioning parameters during ...

Polycrystalline cubic boron nitride is a very hard material. Machining of this material is performed by grinding with diamond tools. Due to its high hardness, grinding tools are subjected to severe microscopic and macroscopic tool wear. This wear leads to short tool life and results in high effort in conditioning the abrasive layer. Contrary to the usual conditioning of diamond grinding wheels ...

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Line contact ring magnetorheological finishing process for ... Optica

The volumetric material removal rate was .mm3/min with surface roughness of nm; however, it can be increased with optimization of machine parameters such as gap, tool rotation, current, etc. Using this RMRF process, a polishing experiment was done over an NBK7 glass workpiece of 40 mm aperture having 70 mm radius of curvature.

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Process Optimization in Glass Polishing Based on a Material ... CORE

Here, the mould production is based on three stages: grinding, polishing and hardening, where, in the second step, different sets of process parameters play a key role in quality, time and cost. To optimize the polishing process of moulds a model for the correlation between the material removal and the process parameters is proposed.

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