More about Brass

Brass

Brass is the generic term for a range of copper-zinc alloys with differing combinations of properties, including strength, machinability, ductility, wear-resistance, hardness, colour, antimicrobial, electrical and thermal conductivity, and corrosion-resistance.
Brasses set the standard by which the machinability of other materials is judged and are also available in a very wide variety of product forms and sizes to allow minimum machining to finished dimensions. Brass does not become brittle at low temperatures like mild steel. Brass also has excellent thermal conductivity making it a first choice for heat exchangers (radiators). Its electrical conductivity ranges from 23 to 44% that of pure copper.
Colours of Brass Brasses have a range of attractive colours ranging from red to yellow to gold to silver. With the addition of 1% manganese, brass will weather to a chocolate brown colour. Nickel silvers will polish to a brilliant silver colour. Brasses are easy to shape, and with all these colours available it is not surprising that architects and designers have used brasses to enhance the appearance of new and refurbished buildings, both inside and out.
Brass and Hygiene Copper and brass are playing a leading role in the fight against hospital-acquired infections such as MRSA and Clostridium difficile. It has been shown that these pathogens, which can be spread by touch, will die in a few hours on copper/brass surfaces. This does not happen on stainless steel or plastic.
Recycling Brass The brass industry throughout the world is well organised and equipped to recycle products at the end of their long lives and process scrap (swarf and offcuts). Making brass from new copper and zinc would be uneconomical and wasteful of raw materials so, since new brass articles are made from recycled scrap, brass is said to be sustainable. In the UK brass manufacturers use almost 100% brass scrap.
Nickel-silver The range of copper-nickel-zinc alloys containing 10-20% nickel are known as nickel silvers and can be regarded as special brasses. They have an attractive silvery appearance rather than the typical brassy colour. In most respects they show similar corrosion characteristics to the brasses but the higher nickel versions have superior tarnish resistance and resistance to stress corrosion cracking. They are available in all forms and are used for decorative applications, jewellery, model making, toothbrush anchor wire and pins, musical instruments e.g. ‘silver bands’, flutes etc, ball point refills, ferrules for woodwinds, bagpipes and fishing rods, test probes and Bourdon springs. For detailed information on brasses – their properties and applications, please see Pub 117.
Publications and Software web link open pdf order printed copy download software webcast To see all publications and software click here. Pub 117 The Brasses – Properties & Applications Compositions and properties of standard brasses in wrought and cast condition, together with details of BS and European Standards, forms available, fabrication methods and examples of typical applications. 2005. 64pp. Pub 44 Machining Brass, Copper and its Alloys Detailed advice on machining techniques. Guide to choice of speeds and feeds. Comprehensive list of British and European alloys with details of machinability. Advice on the selection of cutting fluids. 1992. 66pp. Pub 71 The Nickel Silvers Copper-nickels are silver/white coloured copper alloys with varying additions of zinc and nickel. This publication gives information on, amongst other topics, mechanical properties, typical applications, joining techniques, heat treatment, fabrication and surface finishing. Pub 89 Architectural Brass Highlights the durable and decorative qualities of brass when used for both internal and external architectural applications. Well illustrated with examples of modern usage. 1991. 8pp. Pub 103 Hot Stampings in Copper Alloys A description of the hot stamping process with advice on design and detailed data on the most commonly used alloys. 1994. 20pp. Pub 106 Corrosion Resistance of Copper and Copper Alloys This large table gives information on the suitability of copper and copper alloys with many different chemicals. Data is given for copper, brass, copper nickel, aluminium bronze and gunmetals at three temperatures: 20oC, 60oC and 100oC . The table shows when specific materials can and cannot be used with the chemicals giving an indication of corrosion resistance. 5pp. Pub 133 Design in Brass Describes briefly the many British Standard wrought and cast brasses available. Gives example case histories of applications and machinability comparisons. 1998. 8pp. Pub 177 Brass in Focus Brasses are versatile and cost-effective materials, ideal for designing complex and long lasting components. Article by Ken Kempson in May/June 2004 issue of Engineering Designer, 2004, 4pp. TN12 Copper Alloy Spring Materials The purpose of this technical note is to set out basic data on the copper alloys used in the form of strip and wire for springs, in order to assist the designer and user to prepare designs of optimum efficiency and economy. 22pp. 1973. Out of print. TN26 Brasses, Nickel Brass and Nickel Silver – Technical Data These data sheets, prepared by the International Copper Development Council (CIDEC), were originally published 1968 – 1972. They contain an invaluable summary of data relating to the physical and mechanical properties of the materials at low, ambient and elevated temperatures which is not available elsewhere. Tensile, hardness, impact, creep and fatigue data have been abstracted from the relevant original literature. IS 36 Dezincification Resistant Brass Copper and copper alloy tube and fittings are the preferred materials for use in water distribution systems in buildings because of the ease of installation they afford and the reliability of the installed system. In some areas of the UK, however, the presence of otherwise harmless impurities in the potable water makes it aggressive to duplex brass producing a form of attack known as dezincification. D7 Properties and Availability This disk lists all the brasses and nickel silvers commonly available in Europe together with their compositions and properties. Near equivalents are indicated and the differences are highlighted. Besides the properties normally specified, the disk includes data on long-term properties above and below ambient temperature and in fatigue conditions. 1994. D9 Component Costing Comparator This interactive program enables engineers and designers to quickly estimate the cost of machined components in brass and other materials and to calculate the savings to be made by machining in brass. CD3 Design in Brass This CD is an aid to designing cost-effective and recyclable brass components. It contains PowerPoint presentations for practising and undergraduate designers and engineers covering types of brass, production techniques and case studies.

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Jane Campus Fire

Fire

Jane Campus

Request a copy of this 
Emergency Procedures sticker   
 

How the fire alarm system works:

Jane Campus is equipped with a single stage fire alarm. When you hear the alarm, immediately evacuate the building by the nearest exit. Once outside, you will receive further instructions.

In case of fire: Activate the nearest fire alarm pull station and evacuate the building using the nearest exit.

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Page Not Found

Sorry, there is no inside.senecac.on.ca web page matching your request. It is possible you typed the address incorrectly, or that the page no longer exists.

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NFB Honors Blackboard with Accessibility Award

NFB Honors Blackboard with Accessibility Award

The National Federation of the Blind (NFB) recently awarded Blackboard Learn, Release 9.1 with an accessibility certification, stating that the new release was the most accessible learning system they had ever rated.

Improvements within the new release enable a blind person to more effectively interact with the Blackboard Learn system – furthering not just accessibility technology, but educational advancement as well.

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Amazing offer from Microsoft for Students

Someone was asking about this… Since school is over, not sure if you still qualify, but you can try.

…

Begin forwarded message:

Date: February 10, 2010 11:01:02 EST
Subject: Amazing Microsoft Office Deal

Subject: Microsoft Office

Microsoft Office Offer for Canadian Students: Get Office Ultimate for only $64.00 (over 90% off ERP)

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Tool and Die Makers

Tool and die makers are highly skilled workers in the manufacturing industry. Tool and die makers make jigs, fixtures, dies, molds, machine tools, cutting tools (such as milling cutters and form tools), gauges, and other tools used in manufacturing processes.^[1] Depending on which area of concentration a particular person works in, he or she may be called by variations on the name, including tool maker (toolmaker), die maker (diemaker), mold maker (moldmaker), tool fitter (toolfitter), etc.

Die makers are skilled craftspeople who typically learn their trade through a combination of academic course-work, hands-on instruction and a substantial apprentice period.

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Meeting of the minds

Seneca in the news: April 13, 2010

Meeting of the minds
Seneca’s Animation Arts Centre involvement with award-winning filmmaker profiled in Metro on April 13, 2010 (Seneca stands tall with Oscar-winning director)

Despite an Oscar on his shelf and countless other awards, renowned animated film director Chris Landreth found himself looking for whatever break he could find when it came time to begin production on The Spine, his latest computer-animated short film.

Luckily for Landreth, the animation department at Seneca College in Toronto were exploring ways recent graduates of their three-year animation course andeight-month post-grad program could get real-world experience with the skills they’d been taught. 

“We were actually trying to formalize some sort of way for students to finish films after they had finished our course,” recalls Sean Craig, coordinator of the 3-D animation program, “because typically we don’t allow students to make film while they’re trying to learn all the theory and the software while they’re in school with us.”

A call from Landreth inspired the creation of the school’s first Summer Institute in Animation, created expressly to allow 15 Seneca grads to work on The Spine. Now nominated for a Genie award, The Spine is very much a continuation of where Landreth was going with Ryan, the Oscar-winning short that was also completed with the help of Seneca Students in 2003. The story of a dysfunctional couple, it’s enhanced by wildly surreal visual metaphors, where characters sprawl bonelessly or inhabit bloated, oversized bodies, their bodies twisting and transforming according to their state of mind.

Communicating his unique visual perspective was a priority for Landreth. “By hanging out with them over the course of an afternoon for about a half hour every week we’d be able to get a gelled vibe on how to go forward with the art of the film.” At the end of the week the whole crew, with Craig as director of animation, would get together to watch the rushes, to see how everyone else was working on their individual tasks and how everything was being edited together.

“I know a lot of schools have internships with studios and job placements, but I don’t know that there has been anything like this done before,” he said. Landreth adds “my personal experience in both of the films I’ve worked on with Seneca was that it was a better experience to work with students than to work with seasoned professionals because they were artistically hungry people and wanted to prove their chops.

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ONTARIO INTERNATIONAL EDUCATION OPPORTUNITY SCHOLARSHIP (2/3)

ONTARIO INTERNATIONAL EDUCATION OPPORTUNITY SCHOLARSHIP

IMPORTANT, PLEASE READ CAREFULLY!!

Applicants to the Ontario International Education Opportunity Scholarship must demonstrate a financial need. Please be advised you may be required to provide proof of your resources and expenses before any payments of the scholarship are released. Do not send any supporting documentation at this time but please copy this Financial Need Assessment for your records and be prepared to provide your documentation should you be selected as one of the fourteen successful applicants. The inability to provide documentation to support your assessment will result in nonpayment of the bursary.

Your financial need assessment is based on your full 2009-2010 study period (academic year): Please check your applicable study period: Each study period is followed by the applicable weeks that you must consider and calculate as your financial needs assessment.

Study Periods: January 2010 – August 2010 … 33 weeks of study

May 2010 – August 2010  … 33 weeks of study

January 2010 – December 2010  … 50 weeks of study

FINANCIAL NEED ASSESSMENT: (Your assessment is to be based on the # weeks indicated above.)

INCOME AND RESOURCES (for study period noted above)

Savings – from Pre-study/Work-term $_______________

Total OSAP __________________________________________________ $_______________

Part time Work/Workstudy_______________________________________ $_______________

Government Benefits (Child Tax Benefit, etc.)________________________ $_______________

Other Income (ie child support payments, parental /spousal assistance)______ $_______________

TOTAL INCOME / RESOURCES A $_______________

EXPENSES (for study period noted above)

Tuition and Compulsory Fees_______________________________________$_______________

Books and Required Supplies_______________________________________$_______________

Rent / Board and Lodging__________________________________________$_______________

Utilities including Telephone/Cellphone/Gas/Water___________ _________ $_______________

Local Transportation______________________________________________$_______________

Child Care Costs_________________________________________________$_______________

Food _____________________ $_______________

Miscellaneous (medical, etc.)_______________________________________$_______________

TOTAL EXPENSES Minus B $_______________

FINANCIAL NEED ASSESSMENT:

A – Total Income and Resources Minus B – Total Expenses = Equals Need $_______________

https://my.senecacollege.ca/bbcswebdav/institution/CollegeNews/OIEOS.pdf

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G13 Example using I, K, Q

G13 Example 
using I, K, Q 

O0010 ;

T1 M06 ;

G90 G54 G00 X1.0 Y1.0 ;

S1500 M03 ;

G43 Z0.1 H1 M08;

G12 G91 Z-0.5 I0.3 K1.5 Q0.3 D01 F15. L3;

G90 ;

G00 Z0.1 M09 ;

G28 G91 Y0 Z0 ;

M30 ; 

This example requires more passes in both the radius and depth so K, Q and L (and a G91) are used in addition to I.  

We want to mill a 3.0” diameter 1.5” deep pocket using a 0.5” endmill.  

As seen in the picture, the first pass is the I value (0.3”). Additional passes of Q increments (also 0.3”) are made until the full radius (K1.5) is cut. Then the tool will move down in Z another 0.5” and repeat the process. The G13 cycle will repeat three times (L3) to produce a depth of 1.5”

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CNC 4th Axis at work

hankboschen — December 20, 2006 — CNC machine cutting an 8′ column to fit around a 4.5×4.5″ pole in my living room. If you want to cover up a similar pole in your house or basement,
call Hank @ 303-579-2084 or juiceguy@juiceguy.com

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