Sharpening Stones
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Lapping Plate
Lapping Plate 05M20.20 Patent Pending Lapping is the process of rubbing two surfaces together with an abrasive and a lubricant to improve the quality of at least one of the surfaces. Although lapping can be used to create fl at surfaces, in the context of woodworking, lapping better serves to minimize the roughness of a surface – known as surface conditioning. By minimizing the roughness in the sole of a plane, there is reduced friction between the plane and the workpiece, which in turn reduces abrasion. For blades or chisels, the cutting edge can be made sharper if both intersecting surfaces are free of scratches, even if the back of the blade isn’t perfectly fl at. Straight cutting edge on a lapped blade. Jagged cutting edge on a ground blade. Figure 1: A ground blade versus a lapped blade. Lapping can remove only small amounts of material. If the sole of your plane or the back of your blade is twisted, wavy or bowed, it will be necessary to sand or grind off the high points prior to lapping. Lapping is always performed with an abrasive oil slurry, which not only allows the object to slide Small Abrasive about the lapping plate (called a lap), but also Particles provides a means to remove abraded particles and worn abrasive. Oil Object Abraded Metal Lap Groove in Lap Large Abrasive Particles Figure 2: Lapping mechanics. 2 Important Notes The lapping plate is made of soft iron and will wear over time. These instructions provide information on how to ensure the lap remains fl at for a lifetime. -
Grinding and Honing. Part 2 INFO 20M Information for Ship and Tool-Lovers
Foto: Henk Bos Grinding and honing. Part 2 INFO 20M Information for ship and tool-lovers Info 20M Number 66e Version 1.1 Mai - June 2012 INFO 20M Information paper great pleasure boats and toollovers The paper "great pleasure boats" is meant for owners, skippers and other interested parties of recreational vessels over 20 meters such as: - Former inland vessels - Former Marine vessels - Former fishing vessels - Former Navy ships - Former tugs and pushboats - Houseboats - Recreational vessels specifically built for that purpose. The magazine INFO-20M "great pleasure boats" provides this target group with information about nautical law and the (technical) equipment on board the ship. ISSN: 1872-7824 Initiative: Henk Bos Cover Photo: Henk Bos Design: Henk Bos Correctors: Ge Bos-Thoma, Henk Bos and Janneke Bos In this issue: Henk Bos (HB), Janneke Bos (JB), Rob, Piet, Oldengaerde and Neil Miller English translation: Ge Bos-Thoma. Production and Publishing: Henk en Janneke Bos (Expertisebureau Bos) (c) 2006-2012 Website: http://www.xs4all.nl/~bosq Hasebroekstraat 7, 1962 SV Heemskerk, Tel: 0251-230 050, e-mail: [email protected] Distribution: 20M info is distributed by email free of charge by the following organizations: - The National Association for the Preservation of the Historic Vessel (LVBHB) - Foundation for the preservation of Authentic Steam and Motor Vessels and Tugs (BASM) - Royal Dutch Motorboat Club (KNMC) - The Association Motor Tug (VDMS) and the Association of the Tugboat (VDS) - The Flemish Association for Water Sports (VVW) - Zeekadetkorps Netherlands (ZKK) - Scouting Netherlands (SN) Other organizations may contact the publisher. Info 20M can also be downloaded through the website. -
Hand-Forging and Wrought-Iron Ornamental Work
This is a digital copy of a book that was preserved for generations on library shelves before it was carefully scanned by Google as part of a project to make the world’s books discoverable online. It has survived long enough for the copyright to expire and the book to enter the public domain. A public domain book is one that was never subject to copyright or whose legal copyright term has expired. Whether a book is in the public domain may vary country to country. Public domain books are our gateways to the past, representing a wealth of history, culture and knowledge that’s often difficult to discover. Marks, notations and other marginalia present in the original volume will appear in this file - a reminder of this book’s long journey from the publisher to a library and finally to you. Usage guidelines Google is proud to partner with libraries to digitize public domain materials and make them widely accessible. Public domain books belong to the public and we are merely their custodians. Nevertheless, this work is expensive, so in order to keep providing this resource, we have taken steps to prevent abuse by commercial parties, including placing technical restrictions on automated querying. We also ask that you: + Make non-commercial use of the files We designed Google Book Search for use by individuals, and we request that you use these files for personal, non-commercial purposes. + Refrain from automated querying Do not send automated queries of any sort to Google’s system: If you are conducting research on machine translation, optical character recognition or other areas where access to a large amount of text is helpful, please contact us. -
MACHINISTGRINDER (Duration: Two Years)
GOVERNMENT OF INDIA MINISTRY OF SKILL DEVELOPMENT & ENTREPRENEURSHIP DIRECTORATE GENERAL OF TRAINING COMPETENCY BASED CURRICULUM MACHINISTGRINDER (Duration: Two years) CRAFTSMEN TRAINING SCHEME (CTS) NSQF LEVEL- 5 SECTOR –CAPITAL GOODS AND MANUFACTURING MACHINIST GRINDER (Engineering Trade) (Revised in 2019) Version: 1.2 CRAFTSMEN TRAINING SCHEME (CTS) NSQF LEVEL - 5 Developed By Ministry of Skill Development and Entrepreneurship Directorate General of Training CENTRAL STAFF TRAINING AND RESEARCH INSTITUTE EN-81, Sector-V, Salt Lake City, Kolkata – 700 091 www.cstaricalcutta.gov.in CONTENTS S No. Topics Page No. 1. Course Information 1 2. Training System 3 3. Job Role 7 4. General Information 10 5. Learning Outcome 13 6. Assessment Criteria 15 7. Trade Syllabus 23 Annexure I(List of Trade Tools & Equipment) 40 Annexure II (List of Trade experts) 46 Machinist Grinder 1. COURSE INFORMATION During the two-year duration, a candidate of Machinist Grindertrade is trained on subjects Professional Skill, Professional Knowledge, Engineering Drawing, Workshop Science & Calculation and Employability Skills related to job role. In addition to this, a candidate is entrusted to make/do project work and Extra Curricular Activities to build up confidence. The practical skills are imparted in simple to complex manner & simultaneously theory subject is taught in the same fashion to apply cognitive knowledge while executing task.The course covers the detail aspect of Machinist (Grinder). The broad components covered under Professional Skill subject are as below: FIRST YEAR: The practical part starts with basic fitting covering components like filing, sawing, drilling, tapping, chipping, grinding and different fits. The accuracy proposed is of ±0.2mm and angular accuracy of 1°. -
Lapping Kit Lappin
Lapping Kit 05M01.01Lapping Kit 05M01.01 Contents Contents Five 2-ounce containers of 90x, 180x, 280x, 400x and 600x silicon Five 2-ounce containers of 90x, 180x, 280x, 400x and 600x silicon carbide particles. carbide particles. Background Background Lapping is the process of rubbing two surfaces together with an abrasive Lapping is the process of rubbing two surfaces together with an abrasive and a lubricant to improve the quality of at least one of the surfaces. and a lubricant to improve the quality of at least one of the surfaces. Lapping can be used for fl attening (or truing) a surface, such as a worn Lapping can be used for fl attening (or truing) a surface, such as a worn sharpening stone. Lapping can also minimize the roughness of a surface sharpening stone. Lapping can also minimize the roughness of a surface (i.e., surface conditioning), such as a plane sole or blade. By minimizing (i.e., surface conditioning), such as a plane sole or blade. By minimizing the roughness in the sole of a plane, there is reduced friction between the the roughness in the sole of a plane, there is reduced friction between the plane and the workpiece, which in turn reduces abrasion. For blades or plane and the workpiece, which in turn reduces abrasion. For blades or chisels, the cutting edge can be made sharper if both intersecting surfaces chisels, the cutting edge can be made sharper if both intersecting surfaces are free of scratches. are free of scratches. Choosing an Abrasive Choosing an Abrasive Although any grit will provide adequate results for any application, each is Although any grit will provide adequate results for any application, each is best suited to a particular application. -
An Example from Copper and Bronze Age South-East Iberia
Lithic perspectives on metallurgy: an example from Copper and Bronze Age South-East Iberia Selina Delgado Raack and Roberto Risch Departament de Prehistòria, Universitat Autònoma de Barcelona, Spain To the memory of Volker Pingel Summary. One of the centres of early development of metallurgy is the South-East of the Iberian Peninsula, where it played a key role in the formation of the so called Los Millares and El Argar “cultures” during the 3rd and first half of the 2nd millennium BC. Yet, most arguments about the importance of metalworking are derived from the funerary evidence, i.e. from the finished objects used as grave goods, while direct evidence of the production processes is still scant. During the last years systematic analyses have been carried out in South-East Iberia concerning the (macro-) lithic artefacts coming from a series of Copper and Bronze Age settlements and necropolis. The observation of features and traces related to metalworking on some of these labour instruments has allowed to identify the final stages of metallurgical production, as well as to the maintenance of metal artefacts. The functional analysis of these tools and their spatial distribution at a regional as well as local scale reveals important aspects of the social organisation of the process of metal production. Finally, the different technical situations are evaluated in order to understand the changing relationship between metallurgy and the emergence of new forms of domination and exploitation. Résumé. Un des centres les plus anciens de développement de la métallurgie est le sudest de la péninsule ibérique, où cette technologie a joué un rôle crucial pour la formation des « cultures » de Los Millares et El Argar, pendant le III millénaire et la première moitié du II millénaire BC. -
Lesson 6 - GRINDING and OTHER ABRASIVE PROCESSES Abrasive Machining
Lesson 6 - GRINDING AND OTHER ABRASIVE PROCESSES Abrasive Machining Material removal by action of hard, abrasive particles usually in the form of a bonded wheel • Generally used as finishing operations after part geometry has been established by conventional machining • Grinding is most important abrasive process • Other abrasive processes: honing, lapping, superfinishing, polishing, and buffing 2002©John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e” Why Abrasive Processes are Important • Can be used on all types of materials • Some can produce extremely fine surface finishes, to 0.025µm (1 -in) • Some can hold dimensions to extremely close tolerances 휇 2002©John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e” Grinding Material removal process in which abrasive particles are contained in a bonded grinding wheel that operates at very high surface speeds Grinding wheel • Grinding wheel are usually disk-shaped and Rotation precisely balanced for high rotational speeds • Grinding process involves abrasives which remove small amounts of material from a surface Small chips through a cutting process that produces tiny chips Workpiece https://www.youtube.com/watch?v=nNDIm8eLrQ8 2002©John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e” Grinding • Grinding is a chip-removal process that uses an individual abrasive grain as the cutting tool Copyright © 2010 Pearson Education South Asia Pte Ltd Grinding • Grinding applications include: 1. Finishing of ceramics and glasses 2. Cutting off lengths of bars, structural shapes, masonry and concrete 3. Removing unwanted weld beads and spatter 4. Cleaning surfaces with jets of air or water containing abrasive particles. -
AGREEMENT Between
AGREEMENT between MILLWRIGHTS LOCAL UNION 1121 of the EASTERN MILLWRIGHT REGIONAL COUNCIL UNITED BROTHERHOOD OF CARPENTERS AND JOINERS OF AMERICA, and LABOR RELATIONS DIVISION OF THE ASSOCIATED GENERAL CONTRACTORS OF MASSACHUSETTS, INC. and BUILDING TRADES EMPLOYERS' ASSOCIATION OF BOSTON AND EASTERN MASSACHUSETTS, INC. and CONNECTICUT CONSTRUCTION INDUSTRIES ASSOCIATION, INC. and AGC/CCIA BUILDING CONTRACTORS LABOR DIVISION OF CONNECTICUT, INC. EFFECTIVE: OCTOBER 1, 2015 THROUGH SEPTEMBER 30,2019 Expires September 30, 2019 Eastern Millwright Regional Council UNITED BROTHERHOOD OF CARPENTERS AND JOINERS OF AMERICA, EASTERN MILLWRIGHT REGIONAL COUNCIL MILLWRIGHTS LOCAL UNION 1121 ROBERT LOUBIER, Executive Secretary Treasurer 1661 Worcester Road, Suite 302 Framingham, Massachusetts 01701-5402 Phone 617-254-1655 Fax 617-783-5554 LABOR RELATIONS DIVISION OF THE ASSOCIATED GENERAL CONTRACTORS OF MASSACHUSETTS, INC. BRIAN O'DONNELL, Director of Labor Relations 888 Worcester Street - #40 Wellesley, Massachusetts 02482-3793 Phone 781-235-2680 Fax 781-235-6020 BUILDING TRADES EMPLOYERS' ASSOCIATION OF BOSTON AND EASTERN MASSACHUSETTS, INC. THOMAS J GUNNING, Executive Director 150 Grossman Drive, Suite 313 Braintree, Massachusetts 02184 Phone 781-431-7440 Fax 781-235-6020 CONNECTICUT CONSTRUCTION INDUSTRIES ASSOCIATION, INC. DONALD SHUBERT, President 912 Silas Deane Highway Wethersfield, CT 06109 Phone 860-529-6855 Fax 860-563-0616 AGCICCIA BUILDING CONTRACTORS LABOR DIVISION OF CONNECTICUT, INC. DONALD SHUBERT, President 912 Silas Deane Highway -
Compoforging of Al-Si Metal Matrix Composites Reinforced with -Sic: an Alternative Technique
The Open Industrial & Manufacturing Engineering Journal, 2010, 3, 1-6 1 Open Access Compoforging of Al-Si Metal Matrix Composites Reinforced with -SiC: An Alternative Technique M. F. Valencia García1,*, H. V. Martínez2 and A. Morales Ortiz2 1Escuela de Ingeniería de Antioquia; Grupo Productividad hacia la Competitividad GPC – A.A. 7516 Medellín, Colombia 2Universidad Pontificia Bolivariana; Facultad de Ingeniería Mecánica. Grupo de Investigación sobre Nuevos Materiales GINUMA – A.A. 56006 Medellín, Colombia Abstract: This paper reports the -SiC particles surface modification by copper Electroless Plating (EP), as well as a morphological characterization of Al-Si reinforced composite obtained with such modified particles and consolidated by compoforging. The -SiC particles were obtained by thermal degradation of organic waste. The compoforging technique is a hybrid between the compocasting process and semi-solid forging. The properties of the obtained composite material derive from its globular structure, which is achieved by mixing the semi-solid alloy and the reinforcing particles. This method produced an almost perfect distribution of the reinforce particles. Furthermore, it is possible to achieve minimum defects (i.e. porosity) by applying pressures up to 60MPa. Keywords: Silicon carbide, electroless plating, superficial modification, mechanical mixing, compoforging. INTRODUCTION Table 1. Process Conditions for -SiC Synthesis About 35 years ago, semi-solid metallurgy, or semi-solid processing of alloys (SSM and SSP, respectively), was origi- Variable Value Unit nated. This technology combines the advantages of tradi- o tional forging and foundry processes. Nowadays such tech- Process temperature 1370 C nology and the development of Metal Matrix Composites Atmosphere process 1.5 L/min (MMC’s) have been strong, combining dispersion process to obtain Particulate reinforced Metal Matrix Composites Processing times 40 min (PRMCs). -
PRODUCTS Clever Products Backed by Smart Advice We Live for the Challenge
PRODUCTS Clever products backed by smart advice We live for the challenge SRG Global is an engineering-led specialist construction, maintenance and mining services group built to solve complex problems across the entire asset lifecycle. SRG Global was born out of Australia’s Few specialist services companies have greatest ever engineering and construction amassed the same knowledge, developed challenge, the Snowy Mountains Hydro- as many innovations or worked on as many electric Scheme, in 1961. Today, we are world-class projects as we have. As a result, an ASX listed company bringing a unique we have some of the best technical minds engineering mindset to every construction, and problem solvers, supported by a culture maintenance and mining project we touch. that encourages out of the box thinking and people working together to push boundaries Our specialist technical capabilities, on what’s considered possible. diversified services and global experience working on iconic skyscrapers, bridges, We are also relentless in the way we deliver. dams, structures, transport infrastructure, We know that people’s lives depend on us mining and oil and gas projects, means there executing with absolute precision, which is is no complex challenge we can’t resolve. why we never compromise on our systems, processes and safety standards. Working across the entire asset lifecycle, we provide bespoke engineer, construct We are SRG Global and we’re up for and sustain solutions, meaning you only ever the challenge. need one partner. We’re also self-performers because our team incorporates every discipline and skill required to meet the challenges our customers set. -
2015 17 Sharpening, Grinding
Sharpening, Grinding & Polishing Diamond Stones Axminster Premium Diamond Stones Axminster Handled Axminster Diamond Hones Rider Double • Set of three, medium, fine and extra fine Sided Diamond Axminster • Continuous diamond surface for precision sharpening Bench Stone • 19 x 50mm diamond sharpening area Keyring Diamond Stones • Double-sided premium quality stone • Overall length 160mm • Handy pocket-sized sets on chain • Blue = 180g, Yellow = 260g, Red = 360g • Ideal for plane irons, chisels and ceramic knives • Complete with rubber non-slip surround • 50 x 85mm Inc.vat Ex.vat Code • Fine 1,000 grit (15 micron) and coarse 400 grit (36 micron) • Coarse, medium and fine in each set Set of 3 £9.96 £8.30 200219 • Recommended use with water to prevent clogging • Use for router cutters, pen knives, secateurs etc • 200mm x 65mm x 8mm thick Inc.vat Ex.vat Code Inc.vat Ex.vat Code 50 x 85mm £14.95 £12.46 200218 Double Sided Diamond Bench Stone £24.96 £20.80 951777 Axminster Diamond Axminster Diamond Mini Stone Sets Planer Blade Hone • Available in small or large: 25 x 75mm, or 50 x 150mm Axminster Premium • Keep your planer knives honed to perfection • 180, 260 and 360 grits • No need to remove them from the machine • Colour coded for easy identification Diamond Bench Stones • Two diamond slips - 325 and 600 mesh, held in a wooden handle • For sharpening a variety of small tools • Excellent sharpening performance • Suitable for high speed steel or carbide tipped blades Inc.vat Ex.vat Code • 150mm x 62mm (6” x 2.7/16”) Inc.vat Ex.vat Code 25mm -
Simple, Faster and Safer Is the Urrea Way. Cutting and Grinding Tools
SIMPLE, FASTER AND SAFER IS THE URREA WAY. CUTTING AND GRINDING TOOLS. These accessories, mostly consumable, are used with machine tools, are stationary and portable equipment, and are used to work on different types of materials: • Drills for concrete with straight shanks, SDS plus and SDS max. • Drills for metals that are different materials as cobalt, premium and high speed steel, with measurements in inches, metric, and numerical and alphabetical gauges, and designs of straight, reduced and conical step. • Special bits such as center and step drill bits, router and flat drill bits, worm and punch bits. • Vertical cutters, woodruf type burrs, square and round burrs ideal for lathes and milling machines. • High-speed taps in sets and bimetal hole saws and mandrel guides, ideal for drilling large diameters in different types of materials • Discs for ceramic cuts, cutting of wood, and abrasives for cutting and roughing of metals and stones. • Stones for roughing, polishing or sharpening different shapes and materials such as silicon carbide; Gray and white aluminum oxide. • Mounted tips of various sizes and shapes, ideal for working with mototool in fine grinding and detailed work in dies, molds, etc. • Crimped and braided wire brushes, circular and cup type, to give finishes, remove rust, paint, residues, remove burrs and polish rough surfaces. • Files and rasps of standard shapes and sizes; flat, half round, round, triangle, bastard and smooth. urreaprofessionaltools.com 20 20 CUTTING AND GRINDING TOOLS SDS PLUS CHISELS SDS SDS SDS STEEK-DREH-STZT STEEK-DREH-STZT STEEK-DREH-STZT SPECIAL DIRECT SYSTEM SPECIAL DIRECT SYSTEM SPECIAL DIRECT SYSTEM • Ideal for gouging concrete channels in concrete with • Anti-lock cutting edges.