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Préparation de Production en Productique Mécanique

En production de série, il est préférable d'adopter un temps d'usure d'arête de 10 à 20 % inférieur au temps déterminé par l'usure . Ceci permettra d'optimiser la production des …

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Member Login. To post a message in our FREE forum, you must create an identity with us first. Although premier members do get a higher priority in getting their questions answered by our staff, you don't have to be one to post a message. Remember my Username and Password. Forget Your Password?

eFunda: Convert Hardness: Rockwell B-Scale

Rockwell B-Scale Hardness. 1/16 inch diamond ball, 100 kgf load. The Rockwell Hardness Test presses a steel or diamond hemisphere-conical penetrator against a test specimen and measures the resulting indentation depth as a gage of the specimen hardness. The harder the material, the higher the HR reading. In the test, a minor load (10 kgf) is ...

eFunda: Theory of Thermocouples

The basis of thermocouples was established by Thomas Johann Seebeck in 1821 when he discovered that a conductor generates a voltage when subjected to a temperature gradient. To measure this voltage, one must use a second conductor material which generates a different voltage under the same temperature gradient.

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Usinage CNC des thermoplastiques : un guide complet

Usinage CNC de l'ABS. Les thermoplastiques peuvent être usinés avec des Outils d'usinage CNC en acier dur. L'avance et la vitesse de coupe sont deux variables importantes affectant la qualité de l'usinage. Cependant, un outil en carbure de qualité C-2 fin peut être nécessaire pour tourner les thermoplastiques.

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Properties of Common Solid Materials

Note: 1. All properties are under 1 atm (1.01325×10 5 Pa; 760 mmHg; 14.6959 psi) and at room temperature 25 ºC (77 ºF) unless specified otherwise.: 2. Further information on a specific material can be obtained by clicking the name of that particular material in the following table.: 3. Users who prefer Standard or other unit systems rather than the SI …

eFunda: Properties of Carbon Steel Carbon Steel AISI 1018

AISI 1018. Conditions. Tensile Properties. T (°C) Treatment. 25. carburized at 925°C, cooled, reheated to 775°C, water quenched, tempered at 175°C, core properties (round bar (19-32 mm)) Tensile Strength (MPa)

eFunda: Convert Hardness: Knoop

Symbol: HK : The Knoop Hardness Test, using an elongated pyramidal indenter, is a micro-indentation method suitable for thin plastic sheets, thin metal sheets, brittle materials, or materials where the applied load must never exceed 3.6 kgf.. In the Knoop Hardness Test, a load (typically in the range of 25 ~ 3600 gf) is applied to the surface of the test …

Numerical Integration: Gaussian Quadratures

0.707107. 0.886227. 1.46114. Find abscissas and weights for upto 32 point Gauss-Hermite integration. Users input the desired number of points and click go, the page will list the specified number of abscissas and weights.

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eFunda: The Ultimate Online Reference for Engineers

eFunda, the ultimate online reference for the mechanical engineering community. Calculators Forum Magazines Search Members Membership Login. FREE Publications. …

eFunda: Convert Hardness: Rockwell C-Scale

Rockwell C-Scale Hardness. Brale indenter, 150 kgf load. The Rockwell Hardness Test presses a steel or diamond hemisphere-conical penetrator against a test specimen and measures the resulting indentation depth as a gage of the specimen hardness. The harder the material, the higher the HR reading. In the test, a minor load (10 kgf) is first ...

eFunda: Common Metal Alloys

Information, coverage of important developments and expert commentary in manufacturing. A white paper to assist in the evaluation of 3D scanning hardware solutions. Discover how to choose the right 3D printer for your needs and the key performance attributes to consider. Guide for high quality and cost-effective plastic injection molding.

Periodic Table

Optimize your designs, reduce machining time, and lower your costs. Discover how to choose the right 3D printer for your needs and the key performance attributes to consider. Interactive periodic table with hyperlinks to pages with material properties of each element.

Euler-Bernoulli Beam Equation

Euler-Bernoulli Beam Equation. The out-of-plane displacement w of a beam is governed by the Euler-Bernoulli Beam Equation, where p is the distributed loading (force per unit length) acting in the same direction as y (and w ), E is the Young's modulus of the beam, and I is the area moment of inertia of the beam's cross section.

L3DMétal : Spécialiste Français de l'usinage des pièces tous …

Les activités de notre atelier d'usinage. Tournage, Fraisage, Sciage & Brunissage. Tournage & Fraissage. Grande précision. À l'aide notre centre de tournage 4 axes, nous sommes capables d'usiner, à la demande, toutes pièces alu, bronze, acier, inox et même plastique, pour un prototypage ou une production en petite, moyenne et grande ...

Unified Screw Threads

The minimum recommended length of thread is 1 / 3 of the nominal diameter + 5 threads (+ 0.185 inch). These are included in the Unified Standard Series. Special Combinations: Thread data are tabulated for certain special combinations of diameter and pitch, with pitch diameter tolerances based on a thread engagement length of 9 x Pitch.

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Advanced Loan Calculator

Mechanical Engineers Outlook. Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

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eFunda: About Us. eFunda stands for e ngineering Funda mentals. Its mission is to create an online destination for the engineering community, where working professionals can …

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    eFunda: Design Standards

    Includes qualifications, pay, and job duties. Design standards homepage. Links to all design guidelines or tables in the categories of springs, bearings, plastics, gears, O-rings, screws, gages, GD&T, and design innovation.

    efunda Cool Calculators

    Financial Calculators. This calculator takes any two of the three variables (Loan, Interest Rate, and Number of months) and gives the answer for the remaining one. The advanced version allows for different compounding and payment frequencies. Also, Canadian users will find this Canadian Mortgage Calculator rather handy as the interests default ...

    eFunda: O-Ring Materials Compatibile with Chemical …

    Or second, you can select a specific chemical to view all its compatible O-ring materials. Chemical compatibilities are rated and displayed according to the following scale: Key to O-Ring Material Compatibility Ratings. (4) Good, both for static and dynamic seals. (3) Fair, usually OK for static seals. (2)

    eFunda: Membership Information

    recurring till cancelled. Annual Membership. Student: $36. Professional: $60. Professional Plus: $96. • No banner or pop-up ads. • Content-only print mode. 1. Unlimited access to all eFunda content and calculators.

    GDT: Introduction

    It introduces tools which allow mechanical designers, fabricators, and inspectors to effectively communicate complex geometrical descriptions which are not otherwise able …

    eFunda: Introduction to Flowmeters

    The development of a flowmeter involves a wide variety of disciplines including the flow sensors, the sensor and fluid interactions through the use of computation techniques, the transducers and their associated signal …

    eFunda: Engineering Processes

    CNC Machining Design Guide. Optimize your designs, reduce machining time, and lower your costs.