Spot Welder

Make: Miller

Model: LMSW-52

Ace: Needed (Makerhub@georgefox.edu).

Location: Welding Shop

Resistance spot welding is a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current. The Miller LMSW-52 Air-Cooled Spot Welder is a lightweight unit that is portable, easy to operate and excellent for welding mild, galvanized or stainless materials.

Description

• LMSW-52 spot welder manual [1]

Here is an example of spot welding and some good basic information.

Documentation

• Owner's Manual

Terminology

• Tongs-

Training

Operation

Here are some general setup rules of thumb:

• The maximum weld capacity is 2 sheets of 16 gauge material.

Demonstration

For the demonstration you will need to perform a spot weld.

General Procedure

1. Ensure the material being welded should be clear of any oil or dust
2. Turn on the spot welder
3. Place the material being welded between the clamps.
4. Clamp down on the two pieces of material for no more than 5 seconds.
5. Grab workpiece with a set of pliers, and open the clamp.

Safety

1. Don't exceed gas pressure past specified value
2. Don't weld with gas off
3. Always use a welding helmet and proper PPE
4. Don't weld in wet gear or standing water
5. Don't unscrew regulator adjusting screw all the way out
6. Make sure ground clamp is connected to work

Certification

Foxtale Course

Maintenance

General maintenance

The welding torch and cables should be inspected on a regular basis. Look for any signs of cracking or cuts in the cables.

Specific Maintenance Tasks

Maintenance Procedure	Frequency	Done By
Check Argon Pressure	Before Use	Student/Tech
Check Coolant Flow	Before Use	Student/Tech
Inspect collet & Cup	Before Use	Student/Tech