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In the international market, the price of mold steel is so transparent now, there is no secret that how much of the steel, copper, aluminum, and various alloys which used by the mold manufacturers. Over the past few months, the price had gone through the roof, almost impossible for us try to pin down the target price, So choosing the right mould materials is significant to a successful mold build.

Most of the tools companies builds use hardened tool steels. The type of material being run has a large impact on the steel selection due to the abrasion resistance or the corrosive properties of the steel. If a customer is running PVC materials, for instance, we will always recommend 420 SS [stainless steel]. If it is running glass-filled materials, we would recommend H-13 or S-7. In cases where the molds are for medical parts, most of the time we will use 420 or 440 SS so there isn’t the concern of rust and corrosion. Another area in which steel selection can be critical to building a robust mold is in areas where mold components are moving or rubbing against each other. We never have the same materials in areas where the components are moving against one another. In these cases, we like to use unlike materials with a hardness difference of no less than 2 points, or even more if possible.

According the number of the cycles + parts + volume required, the type of plastic material which will be used, the price the customer will pay for the mold. All of them are considerations for us to choose the right mold materials.

Another consideration is the type of water being run through the moulds. Some of our customers have problems with their cooling water being corrosive. If this is the case, we suggest 420 or 440 SS so that the waterlines do not corrode. Most customers don’t understand how much heat transfer is lost because of rusted waterlines. This results in a loss of production that could be avoided if the toolmaker or the customer had paid attention to their steel selections.

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G150-POCKET MILLING 
(Example) 

In this example, we will mill the pocket shown using steps along the X-axis of 0.3”(I). We will take a maximum depth of cut of 0.2”(Q). (The first pass will only be 0.1”). We will leave 0.02”(K) for a finishing pass. The geometry is in program number O0200(P) 

O0010 ;

T1 M06 ;

G54 G90 G00 X3.0 Y3.5 ;

G43 Z0.1 H1 ;

S2500 M03 ;

N10 G81 Z-0.5 R0.1 F25. ;

T2 M06 ;

G43 Z0.1 H2 ;

S2000 M03 ;

G150 P200 G41 X3.0 Y3.5 Z-0.5 F30. R0.1 Q0.2 I0.3 K0.02 ;

G00 Z0.1 M09 ;

G28 G91 Y0 Z0 ;

M30 ; 

O0200 ;

G01 X2.0 ;

Y2.0 ;

X4.0 ;

Y4.0 ;

G03 X2.0 Y4.0 R1.0 ;

G01 Y3.5 ;

M99 ; 

(Sub-program for Pocket geometry) 

Notice that there is a drill cycle in line N10 for a clearing hole. 

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Software technologies

A CAD model of a mouse.

Originally software for Computer-Aided Design systems was developed with computer languages such as Fortran, but with the advancement of object-oriented programming methods this has radically changed. Typical modern parametric feature based modeler and freeform surface systems are built around a number of key C (programming language) modules with their own APIs. A CAD system can be seen as built up from the interaction of a graphical user interface (GUI) with NURBS geometry and/or boundary representation (B-rep) data via a geometric modeling kernel. A geometry constraint engine may also be employed to manage the associative relationships between geometry, such as wireframe geometry in a sketch or components in an assembly.

Unexpected capabilities of these associative relationships have led to a new form of prototyping called digital prototyping. In contrast to physical prototypes, which entail manufacturing time and in the design.

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As a new Seneca student you are required to make an appointment to write the Skills Assessment, even if you have already written a pre-admissions test.
The Skills Assessment determines English language and mathematics skill level.

Getting your first semester timetable depends on a completed assessment. Delaying your assessment will delay your timetable.

All assessment tests are written at the Newnham Campus Test Centre.

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• Pay your fees
• Complete your assessment test before classes start. Book your appointment by calling 416-491-5050 ext. 6868 or online at https://www.senecac.on.ca/testbooking/assessment/
• *Please note this is a different test than any admissions test you may have taken
• Attend Orientation events & take a tour of campus
• Activate your Learn email account – for step-by-step instructions visit https://www.senecac.on.ca/pws_help/acctact_studnew.html
• Learn how to use My.Seneca and SIRIS
• Get your OneCard at any campus OneCard Office before school starts
• Purchase a parking permit or transit pass
• Pick up a free handbook from Student Services
• Go to Class & meet your professors!
• Apply for bursaries & scholarships online through SIRIS
• Learn about your health & dental plan. Opt out before the deadline if you have other coverage
• Get a mentor (SMILE) or a coach (Success@Seneca)
• Purchase your books in person at the bookstore or online
• Rent a Locker – check with Student Services for details
• Visit the Learning Centre for help with learning strategies and free tutoring
• Visit the SSF and get involved! Join/start a Club!
• Stop by Athletics & Rec to try out for a varsity team, get involved in Rec Council or join a recreational team

For more information on all these items visit the First Year Student Experience website.
Office of First Year Student Experience
firstyear.experience@senecac.on.ca
www.senecac.on.ca/student/first-experience

First Year Student Checklist

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