Tapping

Last week in the workshop we covered tapping and removing a broken stud. We started by drilling a hole into a piece of steel, then we tapped and and screwed a bolt into it, we then cut the head of the bolt to simulate a broken stud. We began by drilling through the broken stud right the way through, then used an EZ out to remove the broken stud. After this was complete we covered repairing a thread. We drilled out the hole and re-tapped it, we then used a Heli-coil to repair the thread.


Tapping the hole that was drilled.


The bolt with its head chopped off


Drilling through the broken stud.


Using the EZ out to remove the broken stud.


Repairing the thread with the Heli-Coil.

Workshop Tools

Please answer the following questions on common work shop tools (in your E Portfolio). Copy and paste the questions in your E Portfolio and answer below. The CDX on-line text book is a good resource to use click on the link and have a look through, this e text book will have all the answers you need CDX E Text Book for the hand tools questions.

1. What is the name of the hammer most commonly used in Automotive engineering?
Ballpein Hammer

2. What would you typically use one for?
Flattening or Peining a Rivet

3. Why would you use a soft faced hammer?
To prevent damage or scratching to work surfaces

4. What type of hammer would you use to give a really strong blow to a chisel?
Lump Hammer

5. What would you use a mallet for in Automotive Engineering?
A job that requires you to use force to get a bolt/bung in without damaging the surface

6. When would you use a dead blow hammer?
In a small or enclosed environment

7. What can cause a hacksaw blade to clog?
Material is too thick to cut

8. What can happen if the blade is too coarse for the job it is intended for?
The blade will grab the material

9. What should you do before and after using a hacksaw?
Clean the blade, make sure its tight.

Welding Day 2

Continued learning my welds today, finished the last two I needed to do which were the lap weld and the T joint weld. Had a couple of goes at the lap weld before I got the hang of it but I got there eventually. The T joint weld was alot more difficult to get the hang of, trying to get the two surfaces molten and keep feeding the rod on this one was proving a bit of a challenge.


Close-up view of the T joint weld, its a bit messy cause I had trouble keeping both surfaces molten.


Another view of the T-joint.


The lap weld after a couple of tries.


Close up of the middle of the lap weld, took this photo to show what a proper weld looks like; A little row of coins.

Welding Day 1

Today we started learning about gas welding, steve took us into the workshop and we began to weld Steel so that we could learn and begin to understand the process of welding, we began by melting the two pieces of steel to join them together, then we used the welding rod which I found alot more difficult, but just have to continue practicing until i get the hang of it.


First attempt at welding two pieces of steel together, not enough heat on the metal to get the weld through to the other side properly


Second attempt, this weld is alot cleaner and has penetration the entire way through the weld


Corner joint, the hole is because the welding torch I was using had something stuck in the nozzle and was causing too much oxygen so the torch was acting more like a cutting torch than welding torch


Inside of the corner joint showing the penetration to the inside of the weld


First use of the welding rod, this is where I had the most difficulty trying to move the rod forward as I was putting the rod into the molten pool and dragging forward, It's a bit messy but as steve said its all about practice.

TTEC 3203 Engineering Technology

Micrometer Task

A task of micrometer measurements we received from Dave to fill out.

500hp Mazda Fe3 turbo