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It is costly to replace car frame if it get damaged or cracked. Not everyone has the ability to buy a new one if the frame of the old one gets cracked or damaged. In this case, welding can be a cost-efficient option you can try out. 

But can you Mig weld a car frame? Here, I’d like to share my views on it, including the basic steps to weld a frame thoroughly. 

mig welding car frame
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How Thick Is a Car Frame?

Based on a current survey of some American top-selling manufacturers, a car’s frame consists of 16 gauges and 22 gauges steel, which are zinc-coated. Talking about the 16-gauge, it comes in a thickness of about 1.4mm-1.6mm.

On the other side, 22-gauge steel includes a thickness of around .068mm-.081mm.

Can You Mig Weld on Your Cars Frame?

Of course, you can. In fact, Mig welding is considered one of the first go-to choices to work with car frames for being less complicated, quicker, and cost-efficient.

Furthermore, if your car frame gets comparatively thicker frames than usual, then MIG welding should be your best option to choose as it penetrates such materials in the best way possible.

Mig Welding Car Frame

You can smoothly Mig weld a car frame doesn’t mean a single welder can do it all. To get the task done, get your hands on the following things mentioned below:

a) Safety Gear

This is where you need to provide extra focus before you begin Mig welding. Chances are your hands may get hurt through excess or end up with toxic fumes if you avoid wearing gloves and a face mask.

Alongside these, a welding helmet, safety leather boots, welding jacket, and goggles are equally necessary to let you stay in a safe zone during Mig weld a car frame.

b) A High-quality Mig Welder

Typical welders can’t help you achieve that so easily for successful welding. For this, you must consider the given criteria:

b.1) Power of A Welder

Consider choosing a specific amount of amps and voltages for welding a car frame. In general, ¼-inch thick steel will require 115V and 140 amps. Or, if the material appears thinner, like ½-inch, get the one that features 220V and 200 amps. 

b.2) Mig Wire

Almost all car owners use steel or sheet metal on their car frames as they’re relatively thinner. So, when picking up the Mig wire, I suggest relying on 0.6 Mig wire because it performs precisely and effectively, which most wire diameters can’t do.

c) Shielding Gas

Ensure to get the mixture of 25% carbon dioxide (Co2) and 75% argon if you want to apply a gas Mig welding to weld your car frame.

How to Mig Weld Car Frame: Step by Step Guide

Let me cut to the chase by showing you the must-try steps on Mig welding a car frame:

  • Step-1: Clean Up the Car Frame

Don’t be a fool by straightly jumping into the welding procedure. Instead, you first pay attention to cleaning up the surface of your car frame. In this case, paper towels may come in handy to eliminate dust, oil, grease, or such things.

But if you notice any stubborn spots or marks, you may have to spend on a specific cleanser for the car frame. And this should be used by following the manufacturers’ instructions.

  • Step-2: Joint Observation

A basic technique to weld frame joints is to confirm that the top, each side, and bottom of your car frame are close to the angle of 45-degree. Thus, you’ll be capable of spreading the weld load on each joint throughout the surface area.

  • Step-3: Turn On Your Mig Welder

Have you cleaned up and observed the joints? If so, your next duty is to start the power tool by plugging it into the nearest place. Once you start it, check the current strength, making sure the heat level isn’t that high.

By overheating, you’ll do nothing but weaken the surroundings of metal joints. Plus, excess heat may result in cracking or such issues; keep in mind.

  • Step-4: Start Welding Car Frame

Here, it would help to be careful during a Mig weld car frame. Both increased and decreased heating through your Mig gun may let you end up with inappropriate welding. Considering this fact, you must go on following either a user guide or an expert’s suggestion.

Remember that inappropriate settings and cheaply-made fillers are the main culprits behind the presence of excess spatter. So while Mig welding, you can get rid of them with the correct settings and top-notch filler materials.

And yes, don’t rush during car frame welding, even if it’s time-consuming.

  • Step-5: Let the joints Cool

After successful welding, you must observe each joint of your car frame, ensuring everything has been performed thoroughly. If you notice any small holes, feel free to turn your welder once again to fill it appropriately.

Please don’t touch the joints immediately after completing the task, as you may find them hotter for a few minutes. Allow them to get to the average temperature.

Frequently Asked Questions (F.A.Q.’s):

1. Does welding a frame weaken it?

A solely-manufactured car frame is way more robust than the welded one. So, it makes sense that if you’re using poor techniques and cheap materials, you’re doing nothing but weaken it. Use the perfect welding technique to avoid your frame got weaken.

2. How much does it cost to MIG weld a car frame?

It depends on the condition of the frame. A professional car frame welding may cost nearly $10000 or so. Novice welders normally charge $87/hour where experts charge $210/hrs.
If some joints of the bottom/top get entirely ruined, you’ll have to replace them with new ones. In this case, the cost might be a little higher than usual.

How long does mig welding last on a car?

It depends on how you treat your car frame after a successful weld. Generally, it will last around 4-7 years if you haven’t left any issues during a Mig weld.

Last Words

So, can you Mig weld a car frame?

The answer is “YES.” But if you try doing it without following the proper rules and appropriate tools, your whole effort will go in vain. Considering the power of your welder and having adequate safety dresses are equally necessary to stay out of risks.

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Maidul Islam

Maidul Shakil has an extreme love for welding. Welding metals and joining them is his hobby and he has also got a vocational training on welding. He strives to learn and teach welding processes and different gears to beginners and newbies. Cutting metal, fusing them and polishing to a shiny surface seems interesting.